Ice-cold thermoelectric energy supply system, winter heating method, summer cooling method

Abstract

The present application discloses an ice-cold heat and power energy supply system, a winter heating method, and a summer cooling method, which solves the problem of low energy utilization efficiency of the heat-electricity-cooling combined supply system. The ice-cold heat and power energy supply system includes a first power generation device, an absorption ice-making and heating unit, a cross-seasonal heat and cold storage device, a heat exchanger, a water supply pipeline, and a return pipeline. A medium flows through the water supply pipeline and the return pipeline. The high-temperature flue gas generated by the first power generation device is input into the absorption ice-making and heating unit for heat exchange. The absorption ice-making and heating unit transfers heat energy / cold energy to the cross-seasonal heat and cold storage device. The cross-seasonal heat and cold storage device transfers heat energy / cold energy to the heat exchanger. The water supply pipeline and the return pipeline are both connected to the heat exchanger. The heat exchanger outputs heat energy / cold energy to the outside through the water supply pipeline. By setting up a cross-seasonal heat and cold storage device, the present application can realize the storage and cross-seasonal use of heat and cold energy, which has the characteristics of energy saving and emission reduction, reducing carbon emissions, and reducing operating costs.

Description

Technical Field

[0001] The present application relates to the field of urban energy technology, and in particular to an ice-cold thermoelectric energy supply system, a winter heating method, and a summer cooling method. Background Art

[0002] Combined heat, power, and cooling systems provide users with heat, electricity, and cooling, enabling heating in winter and cooling in summer. Under the dual carbon goals, reducing the energy consumption and carbon emissions of heating and cooling systems while maintaining economic viability has become a pressing challenge for the industry.

[0003] There are some problems with the traditional combined heat, power and cooling system:

[0004] Problem 1: The initial investment in the system is high, and the utilization hours are short. This small-scale combined heat and power cooling system requires a large investment in power generation equipment, resulting in poor overall economic efficiency.

[0005] The second problem is that the energy efficiency of conventional combined heat, power and cooling systems needs to be improved. The exhaust gas temperature after gas combustion in the system is still relatively high, about 100°C or above, and the waste heat in the flue gas has not been fully utilized. Some combined heat, power and cooling systems have adopted the method of utilizing waste heat from flue gas, but the problem is that these conventional systems can only utilize a portion of the waste heat from flue gas under winter heating conditions. In the non-heating season such as summer, the exhaust gas temperature of the system is still very high, and there is no good technology or method to recover the low-temperature waste heat from flue gas in summer.

[0006] Question 3: When conventional combined heat and power systems operate in summer combined cooling and power conditions, they use the waste heat from the high-temperature flue gas discharged by the generator to drive the lithium bromide absorption chiller for cooling. This results in a low cooling COP, but compared to conventional electric refrigeration, combined cooling and power conditions are not as energy-efficient as separate cooling and power generation.

[0007] Question 4: The system only produces three products: heat, electricity, and cold. When faced with more demands, it cannot meet them. For example, the system sometimes needs to produce ice for use in refrigeration and cold chains. Summary of the Invention

[0008] In order to solve the problems in the above-mentioned prior art, the purpose of this application is to provide an ice-cold thermoelectric energy supply system, a winter heating method, and a summer cooling method, which can realize the storage and cross-seasonal use of heat energy and cold energy, and has the characteristics of energy saving and emission reduction, reduced carbon emissions, and lower operating costs.

[0009] In order to achieve the above technical objectives, this application adopts the following technical solutions:

[0010] In a first aspect, the present application provides an ice-cooling and heat-electric energy supply system, comprising a first power generation device, an absorption ice-making and heat supply unit, a cross-seasonal cold and heat storage device, a heat exchanger, a water supply pipeline, and a return water pipeline, wherein a medium flows through the water supply pipeline and the return water pipeline;

[0011] The high-temperature flue gas generated by the first power generation device is input into the absorption ice-making and heating unit for heat exchange. The absorption ice-making and heating unit transfers heat energy / cold energy to the inter-seasonal cold and heat storage device. The inter-seasonal cold and heat storage device transfers heat energy / cold energy to the heat exchanger. The water supply pipeline and the return water pipeline are both connected to the heat exchanger. The heat exchanger outputs heat energy / cold energy to the outside through the water supply pipeline.

[0012] Optionally, the inter-seasonal cold and heat storage device includes a first inlet and a second inlet, the heat exchanger includes a first inlet, a first outlet, a second inlet, and a second outlet of the heat exchanger, and the absorption ice-making and heating unit also includes a second inlet and a second outlet of the absorption ice-making and heating unit.

[0013] The first inlet and outlet are respectively connected to the second inlet of the absorption ice-making and heating unit and the second outlet of the heat exchanger, and the second inlet and outlet are respectively connected to the second outlet of the absorption ice-making and heating unit and the second inlet of the heat exchanger;

[0014] The first inlet of the heat exchanger is connected to the return water pipeline, and the first outlet of the heat exchanger is connected to the water supply pipeline.

[0015] Optionally, the system further includes a first electric refrigerator, the first electric refrigerator includes a first inlet of the first electric refrigerator, a first outlet of the first electric refrigerator, a second inlet of the first electric refrigerator, and a second outlet of the first electric refrigerator; the first power generation device includes a fuel inlet and a flue gas outlet; the absorption ice-making and heating unit includes a first inlet of the absorption ice-making and heating unit, a first outlet of the absorption ice-making and heating unit, a third inlet of the absorption ice-making and heating unit, and a third outlet of the absorption ice-making and heating unit;

[0016] Fuel enters the first power generation device from the fuel inlet, and the generated high-temperature flue gas is discharged from the flue gas outlet, which is connected to the third inlet of the absorption ice-making and heating unit;

[0017] The first inlet of the first electric refrigerator is connected to the return water pipeline, the first outlet of the first electric refrigerator is connected to the water supply pipeline, the second inlet of the first electric refrigerator is connected to the first outlet of the absorption ice-making and heating unit, and the second outlet of the first electric refrigerator is connected to the first inlet of the absorption ice-making and heating unit.

[0018] Optionally, a high-temperature flue gas and water heat exchange device is further included, and the high-temperature flue gas and water heat exchange device includes a first inlet of the high-temperature flue gas and water heat exchange device, a first outlet of the high-temperature flue gas and water heat exchange device, a second inlet of the high-temperature flue gas and water heat exchange device, and a second outlet of the high-temperature flue gas and water heat exchange device. The first inlet of the high-temperature flue gas and water heat exchange device is connected to the return water pipeline, the first outlet of the high-temperature flue gas and water heat exchange device is connected to the water supply pipeline, and the second inlet of the high-temperature flue gas and water heat exchange device is connected to the third outlet of the absorption ice-making and heating unit.

[0019] Optionally, it further includes a low-temperature flue gas and water heat exchange device and an electric heat pump, wherein the low-temperature flue gas and water heat exchange device includes a first inlet of the low-temperature flue gas and water heat exchange device, a first outlet of the low-temperature flue gas and water heat exchange device, a second inlet of the low-temperature flue gas and water heat exchange device, and a second outlet of the low-temperature flue gas and water heat exchange device; and the electric heat pump includes a first inlet of the electric heat pump, a first outlet of the electric heat pump, a second inlet of the electric heat pump, and a second outlet of the electric heat pump;

[0020] The first inlet of the electric heat pump is connected to the return water pipeline, the first outlet of the electric heat pump is connected to the water supply pipeline, the second inlet of the electric heat pump is connected to the first outlet of the low-temperature flue gas and water heat exchange device, and the second outlet of the electric heat pump is connected to the first inlet of the low-temperature flue gas and water heat exchange device;

[0021] The second inlet of the low-temperature flue gas and water heat exchange device is connected to the second outlet of the high-temperature flue gas and water heat exchange device, and the second outlet of the low-temperature flue gas and water heat exchange device is connected to the atmosphere.

[0022] Optionally, a second electric refrigerator is further included, the second electric refrigerator including a first inlet of the second electric refrigerator, a first outlet of the second electric refrigerator, a second inlet of the second electric refrigerator, and a second outlet of the second electric refrigerator, the first inlet of the second electric refrigerator being connected to the return water pipeline, the first outlet of the second electric refrigerator being connected to the water supply pipeline, the second inlet of the second electric refrigerator being connected to the second outlet of the heat exchanger, and the second outlet of the second electric refrigerator being connected to the first inlet and outlet;

[0023] A straight pipeline is connected between the second inlet of the heat exchanger and the second outlet of the heat exchanger, and a straight pipeline is connected between the second inlet of the second electric refrigerator and the second outlet of the second electric refrigerator.

[0024] Optionally, a third electric refrigerator is further included, the third electric refrigerator including a first inlet of the third electric refrigerator, a first outlet of the third electric refrigerator, a second inlet of the third electric refrigerator, and a second outlet of the third electric refrigerator, the first inlet of the third electric refrigerator is connected to the second outlet of the absorption ice-making and heating unit, the first outlet of the third electric refrigerator is connected to the second inlet of the absorption ice-making and heating unit, the second inlet of the third electric refrigerator is connected to the return water pipeline, and the second outlet of the third electric refrigerator is connected to the water supply pipeline;

[0025] The first inlet and outlet are connected to the first inlet of the absorption ice-making and heating unit and the first inlet of the high-temperature flue gas and water heat exchange device respectively, and the second inlet and outlet are connected to the first outlet of the absorption ice-making and heating unit and the first outlet of the high-temperature flue gas and water heat exchange device respectively.

[0026] Optionally, the first inlet and outlet are provided with a seventh valve, and the second inlet of the heat exchanger is provided with a first valve;

[0027] A ninth valve is provided on the path connecting the first inlet and outlet to the second inlet of the absorption ice-making and heating unit, and a sixth valve is provided on the path connecting the first inlet and outlet to the second outlet of the heat exchanger;

[0028] An eighth valve is provided on the path where the second inlet and outlet are connected to the second outlet of the absorption ice-making and heating unit, and a fifth valve is provided on the path where the second inlet and outlet are connected to the second inlet of the heat exchanger;

[0029] A second valve is provided on the straight pipeline between the second inlet of the heat exchanger and the second outlet of the heat exchanger.

[0030] Optionally, a third valve is provided at the second inlet of the second electric refrigerator;

[0031] The sixth valve is also located on the path connecting the first inlet and outlet to the second outlet of the second electric refrigerator;

[0032] The fifth valve is also located on the path where the second inlet and outlet are connected to the second inlet of the second electric refrigerator;

[0033] A fourth valve is provided on the straight pipeline between the second inlet of the second electric refrigerator and the second outlet of the second electric refrigerator.

[0034] Optionally, the second inlet of the first electric refrigerator is provided with a fourteenth valve, and the second outlet of the first electric refrigerator is provided with a thirteenth valve;

[0035] A fifteenth valve is provided on the path where the first inlet and outlet are connected to the first inlet of the absorption ice-making and heating unit and the first inlet of the high-temperature flue gas and water heat exchange device; a tenth valve is provided on the path where the second inlet and outlet are connected to the first outlet of the absorption ice-making and heating unit and the first outlet of the high-temperature flue gas and water heat exchange device;

[0036] A twelfth valve is provided on the path connecting the first inlet of the high-temperature flue gas and water heat exchange device to the return pipe, and an eleventh valve is provided on the path connecting the first outlet of the high-temperature flue gas and water heat exchange device to the water supply pipe.

[0037] Optionally, the first power generation device further includes a cylinder liner hot water outlet, a cylinder liner hot water inlet, an intermediate cold water outlet, and an intermediate cold water inlet; the absorption ice-making and heating unit further includes an absorption ice-making and heating unit fourth inlet and an absorption ice-making and heating unit fourth outlet; the cylinder liner hot water outlet is connected to the fourth inlet of the absorption ice-making and heating unit; the cylinder liner hot water inlet is connected to the fourth outlet of the absorption ice-making and heating unit; the intermediate cold water outlet and the intermediate cold water inlet are connected to other heat exchangers.

[0038] Optionally, the first power generation device is a gas turbine, or a gas-steam combined cycle generator, or an internal combustion engine, or an external combustion engine, or a fuel cell;

[0039] The absorption ice-making and heating unit is a flue gas driven type, a flue gas and hot water mixed driven type, or a flue gas, hot water and electricity mixed driven type.

[0040] Optionally, it includes a plurality of said cross-seasonal cold and heat storage devices connected in series or in parallel;

[0041] Alternatively, the cross-seasonal cold and heat storage device includes N small chambers, N is a natural number ≥ 2, and the N small chambers are connected in parallel or in series.

[0042] Optionally, the low-temperature flue gas and water heat exchange device is a solid-wall heat exchanger, or a direct contact heat exchanger, or a spray tower.

[0043] A second aspect of the present application provides a winter heating method, which is implemented by the ice-cold thermal power supply system described in any one of the above items, wherein the initial state before winter heating is: the cross-seasonal hot and cold storage device contains high-temperature hot water at a temperature of 90°C-95°C, and all valves are in a closed state;

[0044] Heating starts in winter, including:

[0045] Working condition 1: heat exchanger heating mode;

[0046] The first valve, the fifth valve, the sixth valve, and the seventh valve are opened, and the high-temperature hot water flows from the second inlet through the fifth valve and the first valve into the second inlet of the heat exchanger, flows out from the second outlet of the heat exchanger, passes through the sixth valve and the seventh valve into the first inlet;

[0047] The return water from the return water pipeline enters the first inlet of the heat exchanger, is heated, and then flows out from the first outlet of the heat exchanger and is sent to the water supply pipeline to provide heat to the outside.

[0048] After the inter-seasonal hot and cold storage device has released all the heat, the first valve, the fifth valve, the sixth valve and the seventh valve are all closed.

[0049] Optionally, it also includes:

[0050] Working condition 2: Heat exchanger and second electric refrigerator provide heating at the same time;

[0051] The first valve, the third valve, the fifth valve, the sixth valve, and the seventh valve are opened, and the high-temperature hot water flows from the second inlet through the fifth valve and the first valve into the second inlet of the heat exchanger, flows out from the second outlet of the heat exchanger, passes through the third valve into the second inlet of the second electric refrigerator, flows out from the second outlet of the second electric refrigerator, passes through the sixth valve and the seventh valve into the first inlet;

[0052] The return water from the return water pipeline enters the first inlet of the heat exchanger, is heated, and then flows out from the first outlet of the heat exchanger and is sent to the water supply pipeline to provide heat to the outside.

[0053] The return water of the return water pipeline enters the first inlet of the second electric refrigerator, is heated, and then flows out from the first outlet of the second electric refrigerator and is sent into the water supply pipeline to supply heat to the outside.

[0054] After the inter-seasonal hot and cold storage device has released all the heat, the first valve, the third valve, the fifth valve, the sixth valve and the seventh valve are all closed.

[0055] Optionally, it also includes:

[0056] Operating Condition 3: The inter-seasonal cold and heat storage device stores cold while the system provides heating. The inter-seasonal cold and heat storage device begins to store cold, and the absorption ice-making heating unit begins to supplement the cold for the inter-seasonal cold and heat storage device. At the same time, the first electric refrigeration unit, the high-temperature flue gas and water heat exchange device, and the electric heat pump provide external heat.

[0057] The inter-seasonal cold and heat storage device contains low-temperature water with a temperature of 1°C-10°C. The seventh valve, the eighth valve, and the ninth valve are opened, and the low-temperature water flows from the first inlet through the seventh valve and the ninth valve into the second inlet of the absorption ice-making and heating unit. After being cooled, the low-temperature water flows out from the second outlet of the absorption ice-making and heating unit, passes through the eighth valve and enters the second inlet, and the cold water or ice slurry is stored in the inter-seasonal cold and heat storage device.

[0058] At the same time, the first power generation device, the first electric refrigerator, the high-temperature flue gas and water heat exchange device, the low-temperature flue gas and water heat exchange device, and the electric heat pump are all in operation. Return water from the return water pipeline enters the first electric refrigerator, the high-temperature flue gas and water heat exchange device, and the electric heat pump respectively, and after being heated, flows out and is sent to the water supply pipeline (200) to supply heat to the outside.

[0059] Optionally, it also includes:

[0060] Working condition 4: The cross-seasonal cold and heat storage device includes N small chambers, where N is a natural number ≥ 2. The N small chambers are connected in parallel. When any small chamber has finished releasing heat, it will store cold, while the other small chambers will supply heat.

[0061] A third aspect of the present application provides a summer cooling method, which is implemented by the ice-cooling thermoelectric energy supply system described in any one of the above items, wherein the initial state before summer cooling is: the cross-seasonal cold and heat storage device contains ice slurry or ice-water mixture at a temperature of 0°C, and all valves are in a closed state;

[0062] Cooling starts in summer, including:

[0063] Working condition 1: heat exchanger cooling mode;

[0064] The first valve, the fifth valve, the sixth valve, and the seventh valve are opened, and the ice slurry or cold water flows from the second inlet through the fifth valve and the first valve into the second inlet of the heat exchanger, flows out from the second outlet of the heat exchanger, passes through the sixth valve and the seventh valve into the first inlet;

[0065] The return water from the return water pipeline enters the first inlet of the heat exchanger, is cooled, and then flows out from the first outlet of the heat exchanger and is sent to the water supply pipeline to cool the outside.

[0066] After the inter-seasonal hot and cold storage device has finished cooling, the first valve, the fifth valve, the sixth valve and the seventh valve are all closed.

[0067] Optionally, it also includes:

[0068] Working condition 2: The heat exchanger and the second electric refrigerator provide cooling at the same time;

[0069] The first valve, the third valve, the fifth valve, the sixth valve, and the seventh valve are opened, and the ice slurry or cold water flows from the second inlet through the fifth valve and the first valve into the second inlet of the heat exchanger, flows out from the second outlet of the heat exchanger, passes through the third valve into the second inlet of the second electric refrigerator, flows out from the second outlet of the second electric refrigerator, passes through the sixth valve and the seventh valve into the first inlet;

[0070] The return water from the return water pipeline enters the first inlet of the heat exchanger, is cooled, and then flows out from the first outlet of the heat exchanger and is sent to the water supply pipeline to cool the outside.

[0071] The return water from the return water pipeline enters the first inlet of the second electric refrigerator, is cooled, and then flows out from the first outlet of the second electric refrigerator and is sent to the water supply pipeline for external cooling.

[0072] After the inter-seasonal hot and cold storage device has finished cooling, the first valve, the third valve, the fifth valve, the sixth valve and the seventh valve are all closed.

[0073] Optionally, it also includes:

[0074] Operating condition three: The inter-seasonal heat and cold storage device stores heat while the system provides cooling. The inter-seasonal heat and cold storage device begins to store heat, the absorption ice-making and heating unit begins to supplement heat to the inter-seasonal heat and cold storage device, and the third electric refrigeration unit provides cooling to the outside.

[0075] The seventh valve, the tenth valve, and the fifteenth valve are opened, and water flows from the first inlet through the seventh valve and the fifteenth valve into the first inlet of the absorption ice-making and heating unit. After being heated, water flows out from the first outlet of the absorption ice-making and heating unit and enters the first inlet through the tenth valve.

[0076] Water enters the first inlet of the high-temperature flue gas and water heat exchange device from the first inlet through the seventh valve and the fifteenth valve. After being heated, water flows out from the first outlet of the high-temperature flue gas and water heat exchange device and enters the first inlet through the tenth valve.

[0077] The cold water in the absorption ice-making and heating unit flows out from the second outlet of the absorption ice-making and heating unit, enters the first inlet of the third electric refrigerator, flows out from the first outlet of the third electric refrigerator, and enters the second inlet of the absorption ice-making and heating unit;

[0078] The return water from the return water pipeline enters the first inlet of the third electric refrigerator, is cooled, and then flows out from the first outlet of the third electric refrigerator and is sent to the water supply pipeline for external cooling;

[0079] After the inter-seasonal cold and heat storage device completes heat storage, the seventh valve, the tenth valve, and the fifteenth valve are all closed.

[0080] Optionally, it also includes:

[0081] Working condition 4: The inter-seasonal cold and heat storage device stores heat while the system is in cooling mode. The inter-seasonal cold and heat storage device begins to realize the heat storage function, the absorption ice-making and heating unit begins to supplement heat to the inter-seasonal cold and heat storage device, and at the same time the first electric refrigerator or the second electric refrigerator supplies cold air to the outside.

[0082] As can be seen from the above technical solutions, this application provides an ice-cold thermoelectric energy supply system, a winter heating method, and a summer cooling method, which have the following advantages:

[0083] This patent proposes an ice, cold, electricity and heat system that can produce four products.

[0084] The utilization hours of the system are greatly increased, overcoming the poor economic efficiency of conventional combined heat, power and cooling systems.

[0085] With the same power generation capacity as conventional combined heat, power and cooling systems, the system can not only increase heating capacity, but also cooling capacity, significantly improving heating and cooling capacity and overall energy efficiency throughout the year.

[0086] The high-temperature flue gas generated by the first power generation device can fully absorb the waste heat, achieve deep recovery of flue gas waste heat in summer, improve system energy efficiency, and be more energy-efficient under combined cooling and power conditions.

[0087] Heating and cooling can share the same transmission and distribution pipeline network, with both hot and cold water on the same network.

[0088] The system features a daily peak-shaving mode, enabling year-round electricity peak shaving. Because the system incorporates a cross-seasonal heat and cold storage device, it can store heat or cold in a small chamber throughout the day. During peak electricity demand periods, when the grid is short on power, the system uses its own heat and cold storage to provide cooling and heating, eliminating the need for peak electricity. During low electricity demand periods, when the grid encourages users to increase their electricity consumption, the system can generate heat and cold from the excess electricity and store it in a small chamber in the cross-season heat and cold storage device.

[0089] Through the configuration and operation of the system, the coordination of the four networks of cooling, heating, gas and electricity is achieved.

[0090] In spring and autumn, cold and heat can be stored at the same time, and the cold is released in summer and the heat is released in winter.

[0091] Some of the ice produced can also be sold directly and used in the cold chain. BRIEF DESCRIPTION OF THE DRAWINGS

[0092] Figure 1 This is a schematic structural diagram of an ice-cold thermoelectric energy supply system according to an embodiment of the present application;

[0093] Figure 2 This is a schematic structural diagram of the ice-cold thermoelectric energy supply system according to an embodiment of the present application;

[0094] Figure 3 This is a schematic structural diagram of the ice-cold thermoelectric energy supply system according to an embodiment of the present application;

[0095] Figure 4 This is a structural diagram of the ice-cold thermoelectric energy supply system of an embodiment of the present application.

[0096] Explanation of reference numerals: 1, first valve; 2, second valve; 3, third valve; 4, fourth valve; 5, fifth valve; 6, sixth valve; 7, seventh valve; 8, eighth valve; 9, ninth valve; 10, tenth valve; 11, eleventh valve; 12, twelfth valve; 13, thirteenth valve; 14, fourteenth valve;

[0097] 20. First power generation unit; 21. Fuel inlet; 22. Flue gas outlet; 23. Cylinder liner hot water outlet; 24. Cylinder liner hot water inlet; 25. Intermediate cooling water outlet; 26. Intermediate cooling water inlet;

[0098] 30. Absorption ice-making and heating unit; 31. First inlet of absorption ice-making and heating unit; 32. First outlet of absorption ice-making and heating unit; 33. Second inlet of absorption ice-making and heating unit; 34. Second outlet of absorption ice-making and heating unit; 35. Third inlet of absorption ice-making and heating unit; 36. Third outlet of absorption ice-making and heating unit; 37. Fourth inlet of absorption ice-making and heating unit; 38. Fourth outlet of absorption ice-making and heating unit;

[0099] 40. Inter-seasonal cold and heat storage device; 41. First inlet and outlet; 42. Second inlet and outlet;

[0100] 50. First electric refrigerator; 51. First inlet of first electric refrigerator; 52. First outlet of first electric refrigerator; 53. Second inlet of first electric refrigerator; 54. Second outlet of first electric refrigerator;

[0101] 60. Heat exchanger; 61. First inlet of heat exchanger; 62. First outlet of heat exchanger; 63. Second inlet of heat exchanger; 64. Second outlet of heat exchanger;

[0102] 70. High-temperature flue gas and water heat exchange device; 71. First inlet of high-temperature flue gas and water heat exchange device; 72. First outlet of high-temperature flue gas and water heat exchange device; 73. Second inlet of high-temperature flue gas and water heat exchange device; 74. Second outlet of high-temperature flue gas and water heat exchange device;

[0103] 80. Low-temperature flue gas and water heat exchange device; 81. First inlet of low-temperature flue gas and water heat exchange device; 82. First outlet of low-temperature flue gas and water heat exchange device; 83. Second inlet of low-temperature flue gas and water heat exchange device; 84. Second outlet of low-temperature flue gas and water heat exchange device;

[0104] 90. Electric heat pump; 91. First inlet of electric heat pump; 92. First outlet of electric heat pump; 93. Second inlet of electric heat pump; 94. Second outlet of electric heat pump;

[0105] 100, second electric refrigerator; 101, first inlet of second electric refrigerator; 102, first outlet of second electric refrigerator; 103, second inlet of second electric refrigerator; 104, second outlet of second electric refrigerator;

[0106] 110, third electric refrigerator; 111, first inlet of third electric refrigerator; 112, first outlet of third electric refrigerator; 113, second inlet of third electric refrigerator; 114, second outlet of third electric refrigerator;

[0107] 200. Water supply pipeline;

[0108] 300. Return pipe. DETAILED DESCRIPTION

[0109] The core ideas of this application are:

[0110] This application proposes a new system to address the problems of traditional combined heat, power and cooling systems, such as high initial system investment, short utilization hours, poor overall economic efficiency, the need to further improve the system's energy utilization efficiency, the lack of energy saving under combined cooling and power conditions compared to separate production of cooling and electricity, and a single system output product (only heat, electricity, and cooling).

[0111] While the system is generating electricity,

[0112] Winter: ① Utilize waste heat from flue gas, hot water, or electricity to drive the ice-making and heating units, deeply extracting phase change heat from the water. Both the driving energy and the phase change heat extracted from the water are used for heating, significantly increasing the heat supply while also generating free ice or cold water. This ice or cold water is stored in a cross-seasonal cold and heat storage device (this is called cold storage). The cold energy is stored until the summer cooling period, when it can be used for air conditioning. ② Utilize the heat in the cross-seasonal cold and heat storage device (waste heat stored in the summer and heat dissipated by the room air conditioner) for heating. After the heat is released, it is used to store the ice or cold water produced by the ice-making and heating units.

[0113] Summer: ① The cold stored in the inter-seasonal combined heat and cold storage device is released. When the stored cold is insufficient to meet the total cooling demand, conventional electric cooling is used to supplement the total cooling demand. ② After the combined heat and cold storage device releases the cold, heat from the room air conditioners is absorbed by flue gas, waste heat from hot water, or equipment in the electric drive system, and stored in the combined heat and cold storage device (this is called thermal storage). The stored heat is stored until the heating period and used for heating, while the cooling equipment in the system is used for cooling.

[0114] The flue gas, waste heat from hot water, or electrically driven ice-making and heating machines, electric refrigerators, and electric heat pumps in the system are used in both winter and summer, resulting in high equipment utilization. The cross-seasonal hot and cold storage device has a large temperature difference between heat and cold storage, and its energy storage efficiency is extremely high, making it usable in both winter and summer for a long period of time. The high-temperature flue gas produced by the first power generation device can fully absorb the waste heat, allowing for deep recovery of flue gas waste heat in the summer, improving system energy efficiency and achieving greater energy savings in combined cooling and power supply conditions. With the same installed power generation capacity as a conventional combined heat, power, and cooling system, the system can not only increase heating capacity but also cooling capacity, significantly improving both heating and cooling capacity and overall year-round energy efficiency. The system can also produce a fourth product - ice.

[0115] In addition to the above-mentioned system, the core idea of ​​this application also includes the concept of a peak-shaving mode, which includes a peak-shaving function aimed at reducing initial investment and a peak-shaving function aimed at reducing operating costs.

[0116] First, the peak-shaving function, which aims to reduce initial investment, specifically refers to:

[0117] In winter, part of the system's heat supply is generated by using waste heat to drive an absorption ice-making heating machine for deep heating. The other part is the heat stored in a cross-seasonal heat and cold storage device. When configuring the system, the cross-seasonal heat and cold storage device is used to meet the peak load of heating, reducing the installation and supporting costs of the heating source. If conventional heating is provided by gas boilers, this saves the cost of gas boiler investment and the supporting infrastructure costs of gas source, gas network, gas pressure regulating station, etc. (heat and gas synergy); if conventional heating is provided by cogeneration or electric heat pumps, this saves the cost of cogeneration and electric heat pump investment and the supporting infrastructure costs of power supply, grid, substation, etc. (heat and electricity synergy).

[0118] In summer, the system uses inter-seasonal cold and heat storage devices to store peak cooling loads, significantly reducing the cost of installed cooling units and supporting equipment (saving the cost of electric chillers, supporting power supply, grid, and substation infrastructure). (Cooling and power synergy).

[0119] At the same time, the system's heating and cooling can share a single transmission and distribution network, ultimately achieving synergy between the cooling, heating, gas, and electricity networks.

[0120] Secondly, the peak-shaving function, which aims to reduce operating costs, includes two concepts: seasonal peak-shaving function and daily peak-shaving function.

[0121] Seasonal peak-shaving function:

[0122] In winter, the system uses a portion of the total heating supply from excess summer heat stored in interseasonal heat and cold storage devices and heat dissipated by room air conditioners, effectively reducing the total winter heating supply. In terms of operating mode, this stored heat is used to cover peak heating loads (for heating during severe cold spells), effectively reducing peak heating demand. Heat demand is high during severe cold spells, and this heat is of high value. Compared to gas heating, this saves the most expensive natural gas during these cold spells, shaving the gas peak and achieving synergy between heat and gas. Looking ahead, the grid will experience winter power shortages. By reducing heating demand through interseasonal heat release, we enable the combined heat and power generation system to generate more electricity, contributing to seasonal peak load regulation for the grid and achieving synergy between heat and power. (This reduces the peak in heating demand, shaving the gas peak, and shaving the electricity peak.)

[0123] In summer, the grid's air conditioning power consumption creates seasonal peaks in electricity demand. A portion of the total cooling capacity provided by the system is free in winter, effectively reducing total summer cooling capacity and, consequently, total air conditioning power consumption. In terms of operating mode, this stored cooling capacity is used to offset peak cooling load (cooling during the hottest months), effectively reducing peak cooling demand. The hottest months of summer demand high cooling capacity, which is high-value cooling. This cooling replaces conventional electric cooling, saving cooling power during the hottest months. This reduces peak summer air conditioning power demand, helps seasonally regulate the grid's peak demand, and achieves cooling-power synergy. (By reducing the peak cooling demand, the system also contributes to electricity peak regulation.)

[0124] Daily peak-shaving function throughout the year: The system can perform daily peak-shaving for electricity.

[0125] Because the system has a cross-seasonal heat and cold storage device, it can store cold or heat throughout the day. When electricity demand is high and the grid is short of power, the system uses its own heat and cold storage to provide cooling and heating, eliminating the need for peak electricity. When electricity demand is low, the grid encourages users to use more electricity, and the system can use the extra electricity to generate cold and heat, which is stored in the cross-seasonal heat and cold storage device. (This is a daily peak load regulation throughout the year.)

[0126] The system can also store cold and heat at the same time in spring and autumn, releasing the cold in summer and the heat in winter.

[0127] In order to better understand the purpose, structure and function of the present application, the following is a further detailed description of an ice-cold thermoelectric energy supply system and method of the present application in conjunction with the accompanying drawings.

[0128] Example 1

[0129] like Figure 1 The present invention is shown in Example 1, which provides an ice-cooling and heat-electric energy supply system, including a first power generation device 20, an absorption ice-making and heat supply unit 30, an inter-seasonal cold and heat storage device 40, a heat exchanger 60, a water supply pipeline 200, and a return pipeline 300. A medium flows through the water supply pipeline 200 and the return pipeline 300.

[0130] When providing heat, the medium is water, and when providing cooling, the medium is ice slurry or water. The water supply pipe 200 and the return pipe 300 can be connected to the user's heating system and air conditioning system;

[0131] The high-temperature flue gas generated by the first power generation device 20 is input into the absorption ice-making and heating unit 30 for heat exchange. The absorption ice-making and heating unit 30 transfers the heat energy / cold energy to the inter-seasonal cold and heat storage device 40. The inter-seasonal cold and heat storage device 40 transfers the heat energy / cold energy to the heat exchanger 60. The water supply pipeline 200 and the return water pipeline 300 are both connected to the heat exchanger 60. The heat exchanger 60 outputs the heat energy / cold energy to the outside through the water supply pipeline 200.

[0132] In one embodiment, the inter-seasonal cold and heat storage device 40 includes a first inlet and outlet 41 and a second inlet and outlet 42, the heat exchanger 60 includes a first inlet and outlet 61, a first outlet and outlet 62, a second inlet and outlet 63, and a second outlet 64 of the heat exchanger, and the absorption ice-making and heating unit 30 also includes a second inlet and outlet 33 and a second outlet 34 of the absorption ice-making and heating unit.

[0133] The first inlet and outlet 41 are connected to the second inlet 33 of the absorption ice-making and heating unit and the second outlet 64 of the heat exchanger, respectively. The second inlet and outlet 42 are connected to the second outlet 34 of the absorption ice-making and heating unit and the second inlet 63 of the heat exchanger, respectively.

[0134] The first inlet 61 of the heat exchanger is connected to the return water pipeline 300 , and the first outlet 62 of the heat exchanger is connected to the water supply pipeline 200 .

[0135] In one embodiment, the ice-cold thermoelectric energy supply system further includes a first electric refrigerator 50, the first electric refrigerator 50 includes a first electric refrigerator first inlet 51, a first electric refrigerator first outlet 52, a first electric refrigerator second inlet 53, and a first electric refrigerator second outlet 54; the first power generation device 20 includes a fuel inlet 21 and a flue gas outlet 22; the absorption ice-making and heating unit 30 includes an absorption ice-making and heating unit first inlet 31, an absorption ice-making and heating unit first outlet 32, an absorption ice-making and heating unit third inlet 35, and an absorption ice-making and heating unit third outlet 36;

[0136] The fuel enters the first power generation device 20 from the fuel inlet 21, and the generated high-temperature flue gas is discharged from the flue gas outlet 22, which is connected to the third inlet 35 of the absorption ice-making and heating unit;

[0137] The first inlet 51 of the first electric refrigerator is connected to the return pipe 300, the first outlet 52 of the first electric refrigerator is connected to the water supply pipe 200, the second inlet 53 of the first electric refrigerator is connected to the first outlet 32 ​​of the absorption ice-making and heating unit, and the second outlet 54 of the first electric refrigerator is connected to the first inlet 31 of the absorption ice-making and heating unit.

[0138] In one embodiment, the ice-cold thermoelectric energy supply system also includes a high-temperature flue gas and water heat exchange device 70, which includes a first inlet 71 of the high-temperature flue gas and water heat exchange device, a first outlet 72 of the high-temperature flue gas and water heat exchange device, a second inlet 73 of the high-temperature flue gas and water heat exchange device, and a second outlet 74 of the high-temperature flue gas and water heat exchange device. The first inlet 71 of the high-temperature flue gas and water heat exchange device is connected to the return water pipeline 300, the first outlet 72 of the high-temperature flue gas and water heat exchange device is connected to the water supply pipeline 200, and the second inlet 73 of the high-temperature flue gas and water heat exchange device is connected to the third outlet 36 of the absorption ice-making and heating unit.

[0139] In one embodiment, the ice-cold thermoelectric energy supply system further includes a low-temperature flue gas and water heat exchange device 80 and an electric heat pump 90. The low-temperature flue gas and water heat exchange device 80 includes a first inlet 81 of the low-temperature flue gas and water heat exchange device, a first outlet 82 of the low-temperature flue gas and water heat exchange device, a second inlet 83 of the low-temperature flue gas and water heat exchange device, and a second outlet 84 of the low-temperature flue gas and water heat exchange device. The electric heat pump 90 includes a first inlet 91 of the electric heat pump, a first outlet 92 of the electric heat pump, a second inlet 93 of the electric heat pump, and a second outlet 94 of the electric heat pump.

[0140] The first inlet 91 of the electric heat pump is connected to the return water pipeline 300, the first outlet 92 of the electric heat pump is connected to the water supply pipeline 200, the second inlet 93 of the electric heat pump is connected to the first outlet 82 of the low-temperature flue gas and water heat exchange device, and the second outlet 94 of the electric heat pump is connected to the first inlet 81 of the low-temperature flue gas and water heat exchange device;

[0141] The second inlet 83 of the low-temperature flue gas and water heat exchange device is connected to the second outlet 74 of the high-temperature flue gas and water heat exchange device, and the second outlet 84 of the low-temperature flue gas and water heat exchange device is connected to the atmosphere.

[0142] In one embodiment, Figure 2 As shown, the ice-cold thermoelectric energy supply system also includes a second electric refrigerator 100, which includes a first inlet 101 of the second electric refrigerator, a first outlet 102 of the second electric refrigerator, a second inlet 103 of the second electric refrigerator, and a second outlet 104 of the second electric refrigerator. The first inlet 101 of the second electric refrigerator is connected to the return water pipeline 300, the first outlet 102 of the second electric refrigerator is connected to the water supply pipeline 200, the second inlet 103 of the second electric refrigerator is connected to the second outlet 64 of the heat exchanger, and the second outlet 104 of the second electric refrigerator is connected to the first inlet and outlet 41.

[0143] In one embodiment, a straight-through pipe is connected between the heat exchanger's second inlet 63 and the heat exchanger's second outlet 64, and a straight-through pipe is connected between the second electric refrigerator's second inlet 103 and the second electric refrigerator's second outlet 104. This arrangement allows the heat exchanger 60 and the second electric refrigerator 100 to operate selectively, allowing the high-temperature hot water, ice slurry, or cold water output from the second inlet 42 to flow only into the second electric refrigerator 100 without entering the heat exchanger 60, or to flow only into the heat exchanger 60 without entering the second electric refrigerator 100.

[0144] The second electric refrigerator 100 has the following functions: in winter, the hot water temperature is lowered in stages, and the heat is removed for heating by cooling the water by the electric refrigerator. The water cooled by the second electric refrigerator 100 is then used for cooling or returned to the inter-seasonal hot and cold storage device 40; in summer, the second electric refrigerator 100 switches between the chilled water and cooling water sides, recovering the heat dissipated in the room, raising the return water temperature of the heat network, and sending it to the heat source end.

[0145] In one embodiment, Figure 3 As shown, the ice-cold thermoelectric energy supply system also includes a third electric refrigerator 110, which includes a first inlet 111 of the third electric refrigerator, a first outlet 112 of the third electric refrigerator, a second inlet 113 of the third electric refrigerator, and a second outlet 114 of the third electric refrigerator. The first inlet 111 of the third electric refrigerator is connected to the second outlet 34 of the absorption ice-making and heating unit, the first outlet 112 of the third electric refrigerator is connected to the second inlet 33 of the absorption ice-making and heating unit, the second inlet 113 of the third electric refrigerator is connected to the return water pipeline 300, and the second outlet 114 of the third electric refrigerator is connected to the water supply pipeline 200;

[0146] The first inlet 41 is connected to the first inlet 31 of the absorption ice-making and heating unit and the first inlet 71 of the high-temperature flue gas and water heat exchange device respectively, and the second inlet 42 is connected to the first outlet 32 ​​of the absorption ice-making and heating unit and the first outlet 72 of the high-temperature flue gas and water heat exchange device respectively.

[0147] In one embodiment, the first inlet and outlet 41 is provided with a seventh valve 7, and the second inlet 63 of the heat exchanger is provided with a first valve 1;

[0148] A ninth valve 9 is provided on the path connecting the first inlet 41 to the second inlet 33 of the absorption ice-making and heating unit, and a sixth valve 6 is provided on the path connecting the first inlet 41 to the second outlet 64 of the heat exchanger;

[0149] An eighth valve 8 is provided on the path connecting the second inlet 42 to the second outlet 34 of the absorption ice-making and heating unit, and a fifth valve 5 is provided on the path connecting the second inlet 63 of the heat exchanger to the second inlet 42;

[0150] A second valve 2 is provided on the direct pipeline between the heat exchanger's second inlet 63 and the heat exchanger's second outlet 64. When the second valve 2 is open, the high-temperature hot water, ice slurry, or cold water output from the second inlet 42 does not enter the heat exchanger 60. When the second valve 2 is closed, the high-temperature hot water, ice slurry, or cold water output from the second inlet 42 can enter the heat exchanger 60.

[0151] In one embodiment, the second inlet 103 of the second electric refrigerator is provided with a third valve 3;

[0152] The sixth valve 6 is also located on the path where the first inlet and outlet 41 connects to the second outlet 104 of the second electric refrigerator;

[0153] The fifth valve 5 is also located on the path where the second inlet 42 is connected to the second inlet 103 of the second electric refrigerator;

[0154] A fourth valve 4 is provided on the direct pipeline between the second inlet 103 and the second outlet 104 of the second electric refrigerator. When the fourth valve 4 is open, the high-temperature hot water, ice slurry, or cold water output from the second inlet 42 does not enter the second electric refrigerator 100. When the fourth valve 4 is closed, the high-temperature hot water, ice slurry, or cold water output from the second inlet 42 can enter the second electric refrigerator 100.

[0155] In one embodiment, the second inlet 53 of the first electric refrigerator is provided with a fourteenth valve 14 , and the second outlet 54 of the first electric refrigerator is provided with a thirteenth valve 13 ;

[0156] A fifteenth valve (15) is provided on the path where the first inlet 41 is connected to the first inlet 31 of the absorption ice-making and heating unit and the first inlet 71 of the high-temperature flue gas and water heat exchange device, and a tenth valve 10 is provided on the path where the second inlet 42 is connected to the first outlet 32 ​​of the absorption ice-making and heating unit and the first outlet 72 of the high-temperature flue gas and water heat exchange device;

[0157] A twelfth valve 12 is provided on the path connecting the first inlet 71 of the high-temperature flue gas and water heat exchange device to the return water pipeline 300 , and an eleventh valve 11 is provided on the path connecting the first outlet 72 of the high-temperature flue gas and water heat exchange device to the water supply pipeline 200 .

[0158] Each of the above valves can adopt solenoid valves for easy automatic control.

[0159] In one embodiment, Figure 4As shown, the first power generation device 20 further includes a cylinder jacket hot water outlet 23, a cylinder jacket hot water inlet 24, an intermediate cold water outlet 25, and an intermediate cold water inlet 26. The absorption ice-making and heating unit 30 further includes an absorption ice-making and heating unit fourth inlet 37 and an absorption ice-making and heating unit fourth outlet 38. The cylinder jacket hot water outlet 23 is connected to the absorption ice-making and heating unit fourth inlet 37, the cylinder jacket hot water inlet 24 is connected to the absorption ice-making and heating unit fourth outlet 38, and the intermediate cold water outlet 25 and the intermediate cold water inlet 26 are connected to other heat exchangers.

[0160] The heat of the hot water in the cylinder jacket can also be used to drive ice making. The intercooled water is used to cool the lubricating oil in the first power generation device 20. The intercooled water discharged from the intercooled water outlet 25 has a higher temperature and can be input into other heat exchangers for external heat supply.

[0161] In one embodiment, the first power generation device 20 is a gas turbine, a gas-steam combined cycle generator, an internal combustion engine, an external combustion engine, or a fuel cell.

[0162] In one embodiment, the absorption ice-making and heating unit 30 is driven by flue gas, a combination of flue gas and hot water, or a combination of flue gas, hot water, and electricity. The absorption ice-making and heating unit 30 may not make ice but only produce cold water.

[0163] In one embodiment, the heat exchanger 60 is a common heat exchanger, a large temperature difference heat exchanger, or a type II heat pump heat exchanger.

[0164] In one embodiment, the low-temperature flue gas and water heat exchange device 80 is a solid-wall heat exchanger, a direct contact heat exchanger, or a spray tower.

[0165] In one embodiment: comprising a plurality of cross-seasonal cold and heat storage devices 40 connected in series or in parallel;

[0166] Alternatively, the inter-seasonal cold and heat storage device 40 includes N small chambers, where N is a natural number ≥ 2. The N small chambers are connected in parallel, and when any one small chamber has finished releasing heat, it stores cold, while the other small chambers supply heat.

[0167] The cross-seasonal hot and cold storage device 40 is not limited to the two inlets and outlets shown in the accompanying drawings. The number of inlets and outlets can be adjusted. As long as the function achieved is the same as that of this application, it falls within the scope of protection of this patent. For example, there can be more than two inlets and outlets.

[0168] The inter-seasonal cold and heat storage device 40 can solve the problem of ice slurry stratification, forming an ice-rich layer after inter-season ice storage in large ice storage tanks, making it impossible to transport the ice slurry. It can achieve uniform and continuous transportation of ice slurry within large ice storage tanks. The following structural arrangement can be adopted: the ice storage tank includes an ice slurry area and a static area, the ice slurry area and the static area are interconnected at the bottom, and the ice delivery pipe and the return pipe are connected to the ice slurry area and the static area respectively; the ice storage tank also includes: an agitator and an ice extractor, the agitator is located in the ice slurry area, and the ice extractor is located above the static area; the agitator mixes solid ice and water into ice slurry and adjusts the ice slurry concentration; the ice extractor is used to transport solid ice from the static area to the ice slurry area.

[0169] The internal structures of the various components described above, such as the first power generation device 20, the absorption ice-making and heating unit 30, the first electric refrigerator 50, the heat exchanger 60, the high-temperature flue gas and water heat exchange device 70, the low-temperature flue gas and water heat exchange device 80, the electric heat pump 90, the first electric refrigerator 100, and the third electric refrigerator 110, can be referenced from the prior art and will not be described in detail here. The various interfaces on these devices communicate with one or more functional components within the device to perform various functions, such as heating, cooling, and transporting the medium. Those skilled in the art will fully understand their operating principles after understanding the specific structures of these devices.

[0170] Example 2

[0171] This embodiment provides a winter heating method implemented using the ice-cooling thermal power supply system described in Example 1. This winter mode achieves the following functions: ① Utilizing the heat in the inter-seasonal heat and cold storage device 40 for heating, the heat is then used to store the cold produced by the absorption ice-making and heating unit 30. ② Utilizing the absorption ice-making and heating unit 30, phase-change heat is extracted from the water, utilizing both the flue gas waste heat or electricity used for driving the unit and the phase-change heat extracted from the water for heating. Free ice slurry or cold water is also generated, which is then stored in the inter-seasonal heat and cold storage device 40 (this is cold storage). This cold energy is stored until summer cooling, when it can be used for air conditioning.

[0172] like Figure 1 As shown, the initial state before winter heating is: the inter-seasonal hot and cold storage device 40 contains high-temperature hot water at a temperature of 90°C-95°C, and all valves are in a closed state;

[0173] Heating starts in winter, including:

[0174] Working condition 1: heat exchanger 60 heating mode;

[0175] The first valve 1, the fifth valve 5, the sixth valve 6, and the seventh valve 7 are opened, and the high-temperature hot water flows from the second inlet 42 through the fifth valve 5 and the first valve 1 into the second inlet 63 of the heat exchanger 60, flows out from the second outlet 64 of the heat exchanger, passes through the sixth valve 6 and the seventh valve 7, and enters the first inlet 41;

[0176] The return water from the return water pipeline 300 enters the first inlet 61 of the heat exchanger 60, is heated, and then flows out from the first outlet 62 of the heat exchanger and is sent to the water supply pipeline 200 to provide heat to the outside.

[0177] After the inter-seasonal cold and heat storage device 40 has released all the heat, the first valve 1 , the fifth valve 5 , the sixth valve 6 , and the seventh valve 7 are all closed.

[0178] In one embodiment, Figure 2 As shown, it also includes:

[0179] Working condition 2: the heat exchanger 60 and the second electric refrigerator 100 are in heating mode at the same time;

[0180] The first valve 1, the third valve 3, the fifth valve 5, the sixth valve 6, and the seventh valve 7 are opened. The high-temperature hot water flows from the second inlet 42 through the fifth valve 5 and the first valve 1 into the second inlet 63 of the heat exchanger 60, flows out from the second outlet 64 of the heat exchanger, passes through the third valve 3 into the second inlet 103 of the second electric refrigerator, flows out from the second outlet 104 of the second electric refrigerator, passes through the sixth valve 6 and the seventh valve 7 into the first inlet 41;

[0181] The return water from the return water pipeline 300 enters the first inlet 61 of the heat exchanger 60, is heated, and then flows out from the first outlet 62 of the heat exchanger and is sent to the water supply pipeline 200 to provide heat to the outside.

[0182] The return water from the return water pipe 300 enters the first inlet 101 of the second electric refrigerator 100, is heated, and then flows out from the first outlet 102 of the second electric refrigerator and is sent to the water supply pipe 200 to provide heat to the outside.

[0183] After the inter-seasonal cold and heat storage device 40 has released all the heat, the first valve 1 , the third valve 3 , the fifth valve 5 , the sixth valve 6 , and the seventh valve 7 are all closed.

[0184] The second valve 2 and the fourth valve 4 can control the series or parallel connection between the heat exchanger 60 and the second electric refrigerator 100. When the second valve 2 and the fourth valve 4 are both closed, the heat exchanger 60 and the second electric refrigerator 100 are in a series connection. When the second valve 2 and the fourth valve 4 are both open, the heat exchanger 60 and the second electric refrigerator 100 are in a parallel connection.

[0185] In one embodiment, it further includes:

[0186] Operating condition three: The inter-seasonal cold and heat storage device 40 stores cold while the system provides heat. The inter-seasonal cold and heat storage device 40 begins to store cold, and the absorption ice-making and heating unit 30 begins to supplement cold to the inter-seasonal cold and heat storage device 40. At the same time, the first electric refrigerator 50, the high-temperature flue gas and water heat exchange device 70, and the electric heat pump 90 provide heat to the outside.

[0187] The inter-seasonal cold and heat storage device 40 contains low-temperature water with a temperature of 1°C-10°C. The seventh valve 7, the eighth valve 8, and the ninth valve 9 are opened. The low-temperature water flows from the first inlet 41 through the seventh valve 7 and the ninth valve 9 into the second inlet 33 of the absorption ice-making and heating unit 30. After being cooled, the water flows out from the second outlet 34 of the absorption ice-making and heating unit, passes through the eighth valve 8 and enters the second inlet 42. The cold water or ice slurry is stored in the inter-seasonal cold and heat storage device 40. The second outlet 34 of the absorption ice-making and heating unit can also be directly connected to the outside world, and the produced ice can be directly taken away for use in other occasions, such as for cold chain sales.

[0188] At the same time, the first power generation device 20, the first electric refrigerator 50, the high-temperature flue gas and water heat exchange device 70, the low-temperature flue gas and water heat exchange device 80, and the electric heat pump 90 are all in operation. The return water of the return water pipeline 300 enters the first electric refrigerator 50, the high-temperature flue gas and water heat exchange device 70, and the electric heat pump 90 respectively. After being heated, it flows out and is sent to the water supply pipeline 200 to supply heat to the outside.

[0189] In one embodiment, it further includes:

[0190] Working condition 4: The inter-seasonal cold and heat storage device 40 includes N small chambers, where N is a natural number ≥ 2. The N small chambers are connected in parallel. When any small chamber has finished releasing heat, it will store cold, while the other small chambers will supply heat.

[0191] Reducing initial investment is reflected in:

[0192] The system's heat supply is divided into two parts: one is deep heating provided by the absorption ice-making heating unit 30; the other is heat stored in the inter-seasonal heat and cold storage device 40. During system configuration, the inter-seasonal heat and cold storage device 40 is used to offset peak heating loads, reducing the installation and supporting costs of the heat source. If conventional heating is provided by gas boilers, this saves the investment in gas boilers and the supporting infrastructure costs of the gas source, gas network, and gas pressure regulating station (heat and gas synergy). If conventional heating is provided by combined heat and power (CHP) or electric heat pumps, this saves the investment in CHP and electric heat pumps and the supporting infrastructure costs of the power supply, grid, and substation (heat and power synergy).

[0193] The seasonal peak-shaving function is reflected in:

[0194] In winter, a portion of the total heating supply in the system comes from heat dissipated by room air conditioners stored in the summer by the inter-seasonal heat and cold storage device 40, effectively reducing the total winter heating supply. In terms of operating mode, this stored heat is used to cover peak heating loads (for heating during severe cold weather), effectively reducing peak heating demand. Heat demand is high during severe cold weather, and heat at this time is of high value. Compared to gas heating, this saves the most expensive natural gas during the cold weather, shaving the gas peak and achieving synergy between heat and gas. Looking ahead, the grid will experience winter power shortages. By reducing heat supply through inter-seasonal heat release, we enable the combined heat and power generation to generate more electricity, contributing to seasonal peak load regulation for the grid and achieving heat-power synergy. (This reduces the peak in heating demand, shaving the gas peak, and shaving the electricity peak.)

[0195] Example 3

[0196] This embodiment provides a summer cooling method implemented through the ice-cold thermal power supply system described in Example 1. The heat network water supply realizes the function of delivering cold water, and the heat network return water realizes the function of returning return water from the user to the system. ① The cold energy stored in the inter-seasonal cold and heat storage device 40 is released. This cold energy is obtained free in winter and used for air conditioning and cooling. Firstly, it can significantly reduce the total energy consumption for cooling. Secondly, it also reduces the investment in power generation, transmission and distribution, and electric refrigeration equipment required for this cooling supply. When the stored cold energy is insufficient to meet the total cooling demand, conventional electric refrigeration can be supplemented to meet the total demand. ② After the cold energy in the inter-seasonal cold and heat storage device 40 is released, the absorption ice-making and heating unit 30 absorbs the heat dissipated by the room air conditioner and stores it in the inter-seasonal cold and heat storage device 40 (this is heat storage). The stored heat is stored until it is used for heating during the heating period.

[0197] like Figure 1 As shown, the initial state before summer cooling is: the inter-seasonal cold and heat storage device 40 contains ice slurry or ice-water mixture, the temperature is 0°C, and all valves are in the closed state;

[0198] Cooling starts in summer, including:

[0199] Working condition 1: heat exchanger 60 cooling mode;

[0200] The first valve 1, the fifth valve 5, the sixth valve 6, and the seventh valve 7 are opened, and the ice slurry or cold water flows from the second inlet 42 through the fifth valve 5 and the first valve 1 into the second inlet 63 of the heat exchanger 60, flows out from the second outlet 64 of the heat exchanger, passes through the sixth valve 6 and the seventh valve 7, and enters the first inlet 41;

[0201] The return water from the return water pipeline 300 enters the first inlet 61 of the heat exchanger 60, is cooled, and then flows out from the first outlet 62 of the heat exchanger and is sent to the water supply pipeline 200 to provide external cooling.

[0202] After the inter-seasonal cold and heat storage device 40 has finished discharging cold, the first valve 1 , the fifth valve 5 , the sixth valve 6 , and the seventh valve 7 are all closed.

[0203] In one embodiment, Figure 2 As shown, it also includes:

[0204] Working condition 2: the heat exchanger 60 and the second electric refrigerator 100 are in cooling mode at the same time;

[0205] The first valve 1, the third valve 3, the fifth valve 5, the sixth valve 6, and the seventh valve 7 are open, and the ice slurry or cold water flows from the second inlet 42 through the fifth valve 5 and the first valve 1 into the second inlet 63 of the heat exchanger 60, flows out from the second outlet 64 of the heat exchanger, passes through the third valve 3 into the second inlet 103 of the second electric refrigerator, flows out from the second outlet 104 of the second electric refrigerator, passes through the sixth valve 6 and the seventh valve 7 into the first inlet 41;

[0206] The return water from the return water pipeline 300 enters the first inlet 61 of the heat exchanger 60, is cooled, and then flows out from the first outlet 62 of the heat exchanger and is sent to the water supply pipeline 200 to provide external cooling.

[0207] The return water from the return water pipe 300 enters the first inlet 101 of the second electric refrigerator 100, is cooled, and then flows out from the first outlet 102 of the second electric refrigerator and is sent to the water supply pipe 200 to provide external cooling.

[0208] After the inter-seasonal cold and heat storage device 40 has finished discharging cold, the first valve 1 , the third valve 3 , the fifth valve 5 , the sixth valve 6 , and the seventh valve 7 are all closed.

[0209] In one embodiment, Figure 3 As shown, it also includes:

[0210] Operating condition three: The inter-seasonal cold and heat storage device 40 stores heat while the system provides cooling. The inter-seasonal cold and heat storage device 40 begins to store heat, the absorption ice-making and heating unit 30 begins to supplement heat to the inter-seasonal cold and heat storage device 40, and the third electric refrigerator 110 provides cooling to the outside.

[0211] The seventh valve 7, the tenth valve 10, and the fifteenth valve 15 are opened. Water flows from the first inlet 41 through the seventh valve 7 and the fifteenth valve 15 into the first inlet 31 of the absorption ice-making and heating unit 30. After being heated, water flows out from the first outlet 32 ​​of the absorption ice-making and heating unit and enters the first inlet 42 through the tenth valve 10.

[0212] Water flows from the first inlet 41 through the seventh valve 7 and the fifteenth valve 15 into the first inlet 71 of the high-temperature flue gas and water heat exchange device 70. After being heated, water flows out from the first outlet 72 of the high-temperature flue gas and water heat exchange device and flows through the tenth valve 10 into the first inlet 42.

[0213] The cold water in the absorption ice-making and heating unit 30 flows out from the second outlet 34 of the absorption ice-making and heating unit, enters the third electric refrigerator first inlet 111 of the third electric refrigerator 110, flows out from the first outlet 112 of the third electric refrigerator, and enters the second inlet 33 of the absorption ice-making and heating unit;

[0214] The return water from the return water pipeline 300 enters the first inlet 113 of the third electric refrigerator 110, is cooled, and then flows out from the first outlet 114 of the third electric refrigerator and is sent to the water supply pipeline 200 to provide external cooling.

[0215] After the inter-seasonal cold and heat storage device 40 has completed heat storage, the seventh valve 7, the tenth valve 10, and the fifteenth valve 15 are all closed.

[0216] When the system provides cooling to the outside, the low-temperature flue gas and water heat exchange device 80 and the electric heat pump 90 are both in a shutdown state, so the second outlet 74 of the high-temperature flue gas and water heat exchange device 70 can be directly connected to the atmosphere, and the flue gas is directly discharged from the second outlet 74 of the high-temperature flue gas and water heat exchange device without passing through the low-temperature flue gas and water heat exchange device 80.

[0217] In one embodiment, it further includes:

[0218] Working condition 4: The inter-seasonal cold and heat storage device 40 stores heat while the system is in cooling mode. The inter-seasonal cold and heat storage device 40 begins to realize the heat storage function, the absorption ice-making and heating unit 30 begins to supplement heat to the inter-seasonal cold and heat storage device 40, and at the same time the first electric refrigerator 50 or the second electric refrigerator 100 provides cooling to the outside.

[0219] At this time, the third electric refrigerator 110 may not be set up, and a separate cold energy transfer path needs to be set up between the first electric refrigerator 50, the second electric refrigerator 100 and the absorption ice-making and heating unit 30. The cold energy transfer path between the third electric refrigerator 110 and the absorption ice-making and heating unit 30 can be referred to.

[0220] Reducing initial investment is reflected in:

[0221] At this time, the system's cooling capacity consists of two parts. One part is provided by the absorption ice-making and heating unit 30; the other part is provided by the inter-seasonal cold and heat storage device 40. The system uses the peak cooling load stored in the inter-seasonal cold and heat storage device 40, which greatly reduces the installation and supporting costs of the cold source (saving the cost of the infrastructure such as electric refrigerators, supporting power supply-grid-substation, etc.).

[0222] The seasonal peak-shaving function is reflected in:

[0223] In summer, the grid's air conditioning power consumption creates seasonal peaks in electricity demand. A portion of the total cooling capacity provided by the system is free in winter, effectively reducing total summer cooling capacity and, consequently, total air conditioning power consumption. In terms of operating mode, this stored cooling capacity is used to offset peak cooling load (cooling during the hottest months), effectively reducing peak cooling demand. The hottest months of summer demand high cooling capacity, which is high-value cooling. This cooling replaces conventional electric cooling, saving cooling power during the hottest months. This reduces peak summer air conditioning power demand, helps seasonally regulate the grid's peak demand, and achieves cooling-power synergy. (By reducing the peak cooling demand, the system also contributes to electricity peak regulation.)

[0224] It should be noted that, unless otherwise specified, the technical or scientific terms used in this application should have the common meanings understood by those skilled in the art to which this application belongs.

[0225] In addition, the terms "first," "second," etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. In the description of this application, "plurality" means more than two, unless otherwise specifically defined.

[0226] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. An ice-cooled thermoelectric energy supply system, characterized in that: It comprises a first power generation device (20), an absorption ice-making and heating unit (30), a cross-seasonal cold and heat storage device (40), a heat exchanger (60), a water supply pipeline (200), and a return water pipeline (300), wherein a medium flows through the water supply pipeline (200) and the return water pipeline (300); The high-temperature flue gas generated by the first power generation device (20) is input into the absorption ice-making and heating unit (30) for heat exchange, the absorption ice-making and heating unit (30) transfers heat energy / cold energy to the inter-seasonal cold and heat storage device (40), and the inter-seasonal cold and heat storage device (40) transfers heat energy / cold energy to the heat exchanger (60). The water supply pipeline (200) and the return water pipeline (300) are both connected to the heat exchanger (60), and the heat exchanger (60) outputs heat energy / cold energy to the outside through the water supply pipeline (200); The cross-seasonal cold and heat storage device (40) includes a first inlet and outlet (41) and a second inlet and outlet (42); the heat exchanger (60) includes a first inlet and outlet (61) of the heat exchanger, a first outlet and outlet (62) of the heat exchanger, a second inlet and outlet (63) of the heat exchanger, and a second outlet and outlet (64) of the heat exchanger; and the absorption ice-making and heating unit (30) also includes a second inlet and outlet (33) of the absorption ice-making and heating unit and a second outlet (34) of the absorption ice-making and heating unit. The first inlet and outlet (41) are respectively connected to the second inlet (33) of the absorption ice-making and heating unit and the second outlet (64) of the heat exchanger; the second inlet and outlet (42) are respectively connected to the second outlet (34) of the absorption ice-making and heating unit and the second inlet (63) of the heat exchanger; The first inlet (61) of the heat exchanger is connected to the return water pipeline (300), and the first outlet (62) of the heat exchanger is connected to the water supply pipeline (200); The first electric refrigerator (50) further comprises a first electric refrigerator (50), wherein the first electric refrigerator (50) comprises a first inlet (51) of the first electric refrigerator, a first outlet (52) of the first electric refrigerator, a second inlet (53) of the first electric refrigerator, and a second outlet (54) of the first electric refrigerator; the first power generation device (20) comprises a fuel inlet (21) and a flue gas outlet (22); and the absorption ice-making and heating unit (30) comprises a first inlet (31) of the absorption ice-making and heating unit, a first outlet (32) of the absorption ice-making and heating unit, a third inlet (35) of the absorption ice-making and heating unit, and a third outlet (36) of the absorption ice-making and heating unit; Fuel enters the first power generation device (20) from the fuel inlet (21), and the generated high-temperature flue gas is discharged from the flue gas outlet (22), and the flue gas outlet (22) is connected to the third inlet (35) of the absorption ice-making and heating unit; The first inlet (51) of the first electric refrigerator is connected to the return water pipeline (300), the first outlet (52) of the first electric refrigerator is connected to the water supply pipeline (200), the second inlet (53) of the first electric refrigerator is connected to the first outlet (32) of the absorption ice-making and heating unit, and the second outlet (54) of the first electric refrigerator is connected to the first inlet (31) of the absorption ice-making and heating unit; The high-temperature flue gas and water heat exchange device (70) further comprises a high-temperature flue gas and water heat exchange device (70), the high-temperature flue gas and water heat exchange device (70) comprising a first inlet (71) of the high-temperature flue gas and water heat exchange device, a first outlet (72) of the high-temperature flue gas and water heat exchange device, a second inlet (73) of the high-temperature flue gas and water heat exchange device, and a second outlet (74) of the high-temperature flue gas and water heat exchange device, the first inlet (71) of the high-temperature flue gas and water heat exchange device being connected to the return water pipeline (300), the first outlet (72) of the high-temperature flue gas and water heat exchange device being connected to the water supply pipeline (200), and the second inlet (73) of the high-temperature flue gas and water heat exchange device being connected to the third outlet (36) of the absorption ice-making and heating unit; It also includes a low-temperature flue gas and water heat exchange device (80) and an electric heat pump (90), wherein the low-temperature flue gas and water heat exchange device (80) includes a first inlet (81) of the low-temperature flue gas and water heat exchange device, a first outlet (82) of the low-temperature flue gas and water heat exchange device, a second inlet (83) of the low-temperature flue gas and water heat exchange device, and a second outlet (84) of the low-temperature flue gas and water heat exchange device, and the electric heat pump (90) includes a first inlet (91) of the electric heat pump, a first outlet (92) of the electric heat pump, a second inlet (93) of the electric heat pump, and a second outlet (94) of the electric heat pump; The first inlet (91) of the electric heat pump is connected to the return water pipeline (300), the first outlet (92) of the electric heat pump is connected to the water supply pipeline (200), the second inlet (93) of the electric heat pump is connected to the first outlet (82) of the low-temperature flue gas and water heat exchange device, and the second outlet (94) of the electric heat pump is connected to the first inlet (81) of the low-temperature flue gas and water heat exchange device; The second inlet (83) of the low-temperature flue gas and water heat exchange device is connected to the second outlet (74) of the high-temperature flue gas and water heat exchange device, and the second outlet (84) of the low-temperature flue gas and water heat exchange device is connected to the atmosphere; The second electric refrigerator (100) further comprises a second electric refrigerator (100), wherein the second electric refrigerator (100) comprises a first inlet (101) of the second electric refrigerator, a first outlet (102) of the second electric refrigerator, a second inlet (103) of the second electric refrigerator, and a second outlet (104) of the second electric refrigerator, wherein the first inlet (101) of the second electric refrigerator is connected to the return water pipeline (300), the first outlet (102) of the second electric refrigerator is connected to the water supply pipeline (200), the second inlet (103) of the second electric refrigerator is connected to the second outlet (64) of the heat exchanger, and the second outlet (104) of the second electric refrigerator is connected to the first inlet and outlet (41); A straight pipeline is connected between the second inlet (63) of the heat exchanger and the second outlet (64) of the heat exchanger, and a straight pipeline is connected between the second inlet (103) of the second electric refrigerator and the second outlet (104) of the second electric refrigerator; The third electric refrigerator (110) further comprises a third electric refrigerator (110), the third electric refrigerator (110) comprising a first inlet (111) of the third electric refrigerator, a first outlet (112) of the third electric refrigerator, a second inlet (113) of the third electric refrigerator, and a second outlet (114) of the third electric refrigerator, wherein the first inlet (111) of the third electric refrigerator is connected to the second outlet (34) of the absorption ice-making and heating unit, the first outlet (112) of the third electric refrigerator is connected to the second inlet (33) of the absorption ice-making and heating unit, the second inlet (113) of the third electric refrigerator is connected to the return water pipeline (300), and the second outlet (114) of the third electric refrigerator is connected to the water supply pipeline (200); The first inlet and outlet (41) are respectively connected to the first inlet (31) of the absorption ice-making and heating unit and the first inlet (71) of the high-temperature flue gas and water heat exchange device, and the second inlet and outlet (42) are respectively connected to the first outlet (32) of the absorption ice-making and heating unit and the first outlet (72) of the high-temperature flue gas and water heat exchange device.

2. The ice-cold thermoelectric energy supply system according to claim 1, characterized in that: The first inlet and outlet (41) is provided with a seventh valve (7), and the second inlet (63) of the heat exchanger is provided with a first valve (1); A ninth valve (9) is provided on the path connecting the first inlet (41) to the second inlet (33) of the absorption ice-making and heating unit, and a sixth valve (6) is provided on the path connecting the first inlet (41) to the second outlet (64) of the heat exchanger. An eighth valve (8) is provided on the path connecting the second inlet (42) to the second outlet (34) of the absorption ice-making and heating unit, and a fifth valve (5) is provided on the path connecting the second inlet (63) of the heat exchanger. A second valve (2) is provided on the straight pipeline between the second inlet (63) of the heat exchanger and the second outlet (64) of the heat exchanger.

3. The ice-cold thermoelectric energy supply system according to claim 2, characterized in that: The second inlet (103) of the second electric refrigerator is provided with a third valve (3); The sixth valve (6) is also located on a path connecting the first inlet and outlet (41) to the second outlet (104) of the second electric refrigerator; The fifth valve (5) is also located on the path where the second inlet (42) is connected to the second inlet (103) of the second electric refrigerator; A fourth valve (4) is provided on the straight-through pipeline between the second inlet (103) of the second electric refrigerator and the second outlet (104) of the second electric refrigerator.

4. The ice-cold thermoelectric energy supply system according to claim 3, characterized in that: The second inlet (53) of the first electric refrigerator is provided with a fourteenth valve (14), and the second outlet (54) of the first electric refrigerator is provided with a thirteenth valve (13); A fifteenth valve (15) is provided on a path where the first inlet (41) is connected to the first inlet (31) of the absorption ice-making and heating unit and the first inlet (71) of the high-temperature flue gas and water heat exchange device, and a tenth valve (10) is provided on a path where the second inlet (42) is connected to the first outlet (32) of the absorption ice-making and heating unit and the first outlet (72) of the high-temperature flue gas and water heat exchange device; A twelfth valve (12) is provided on the path where the first inlet (71) of the high-temperature flue gas and water heat exchange device is connected to the return water pipeline (300), and an eleventh valve (11) is provided on the path where the first outlet (72) of the high-temperature flue gas and water heat exchange device is connected to the water supply pipeline (200).

5. The ice-cold thermoelectric energy supply system according to claim 1, characterized in that: The first power generation device (20) further includes a cylinder liner hot water outlet (23), a cylinder liner hot water inlet (24), an intermediate cold water outlet (25), and an intermediate cold water inlet (26); the absorption ice-making and heating unit (30) further includes an absorption ice-making and heating unit fourth inlet (37) and an absorption ice-making and heating unit fourth outlet (38); the cylinder liner hot water outlet (23) is connected to the absorption ice-making and heating unit fourth inlet (37), the cylinder liner hot water inlet (24) is connected to the absorption ice-making and heating unit fourth outlet (38), and the intermediate cold water outlet (25) and the intermediate cold water inlet (26) are connected to other heat exchangers.

6. The ice-cold thermoelectric energy supply system according to claim 1, characterized in that: The first power generation device (20) is a gas turbine, or a gas-steam combined cycle generator, or an internal combustion engine, or an external combustion engine, or a fuel cell; The absorption ice-making and heating unit (30) is a flue gas driven type, a flue gas and hot water mixed driven type, or a flue gas, hot water and electricity mixed driven type.

7. The ice-cold thermoelectric energy supply system according to claim 1, characterized in that: It includes a plurality of the above-mentioned cross-seasonal cold and heat storage devices (40) connected in series or in parallel; Alternatively, the cross-seasonal cold and heat storage device (40) includes N small chambers, N is a natural number ≥ 2, and the N small chambers are connected in parallel or in series.

8. The ice-cold thermoelectric energy supply system according to claim 1, characterized in that: The low-temperature flue gas and water heat exchange device (80) is a solid wall heat exchanger, or a direct contact heat exchanger, or a spray tower.

9. A winter heating method, characterized in that: By implementing the ice-cold heat and power energy supply system according to claim 4, the initial state before winter heating is: the cross-seasonal cold and heat storage device (40) contains high-temperature hot water at a temperature of 90°C-95°C, and all valves are in a closed state; Heating starts in winter, including: Working condition 1: heat exchanger (60) heating mode; The first valve (1), the fifth valve (5), the sixth valve (6), and the seventh valve (7) are opened, and the high-temperature hot water flows from the second inlet (42) through the fifth valve (5) and the first valve (1) into the second inlet (63) of the heat exchanger (60), flows out from the second outlet (64) of the heat exchanger, passes through the sixth valve (6) and the seventh valve (7), and enters the first inlet (41); Return water from the return water pipeline (300) enters the first inlet (61) of the heat exchanger (60), is heated, and then flows out from the first outlet (62) of the heat exchanger and is sent to the water supply pipeline (200) to supply heat to the outside. After the inter-seasonal cold and heat storage device (40) has released all the heat, the first valve (1), the fifth valve (5), the sixth valve (6), and the seventh valve (7) are all closed.

10. The winter heating method according to claim 9, characterized in that: Also includes: Working condition 2: the heat exchanger (60) and the second electric refrigerator (100) are in heating mode at the same time; The first valve (1), the third valve (3), the fifth valve (5), the sixth valve (6), and the seventh valve (7) are opened, and the high-temperature hot water flows from the second inlet (42) through the fifth valve (5) and the first valve (1) into the second inlet (63) of the heat exchanger (60), flows out from the second outlet (64) of the heat exchanger, passes through the third valve (3), enters the second inlet (103) of the second electric refrigerator, flows out from the second outlet (104) of the second electric refrigerator, passes through the sixth valve (6) and the seventh valve (7), and enters the first inlet (41); Return water from the return water pipeline (300) enters the first inlet (61) of the heat exchanger (60), is heated, and then flows out from the first outlet (62) of the heat exchanger and is sent to the water supply pipeline (200) to supply heat to the outside. Return water from the return water pipeline (300) enters the first inlet (101) of the second electric refrigerator (100), is heated, and then flows out from the first outlet (102) of the second electric refrigerator and is sent to the water supply pipeline (200) to supply heat to the outside. After the inter-seasonal cold and heat storage device (40) has released all the heat, the first valve (1), the third valve (3), the fifth valve (5), the sixth valve (6), and the seventh valve (7) are all closed.

11. The winter heating method according to claim 10, characterized in that: Also includes: Working condition three: the inter-seasonal cold and heat storage device (40) stores cold and the system supplies heat at the same time. The inter-seasonal cold and heat storage device (40) starts to realize the cold storage function, and the absorption ice-making heating unit (30) starts to supplement the cold to the inter-seasonal cold and heat storage device (40). At the same time, the first electric refrigerator (50), the high-temperature flue gas and water heat exchange device (70), and the electric heat pump (90) supply heat to the outside. The inter-seasonal cold and heat storage device (40) contains low-temperature water with a temperature of 1°C-10°C. The seventh valve (7), the eighth valve (8), and the ninth valve (9) are opened. The low-temperature water flows from the first inlet (41) through the seventh valve (7) and the ninth valve (9) into the second inlet (33) of the absorption ice-making and heating unit (30). After being cooled, the water flows out from the second outlet (34) of the absorption ice-making and heating unit and enters the second inlet (42) through the eighth valve (8). The cold water or ice slurry is stored in the inter-seasonal cold and heat storage device (40). At the same time, the first power generation device (20), the first electric refrigerator (50), the high-temperature flue gas and water heat exchange device (70), the low-temperature flue gas and water heat exchange device (80), and the electric heat pump (90) are all in operation, and the return water of the return water pipeline (300) enters the first electric refrigerator (50), the high-temperature flue gas and water heat exchange device (70), and the electric heat pump (90) respectively, and after being heated, flows out and is sent to the water supply pipeline (200) to supply heat to the outside.

12. The winter heating method according to claim 11, characterized in that: Also includes: Working condition 4: The cross-seasonal cold and heat storage device (40) includes N small chambers, where N is a natural number ≥ 2. The N small chambers are connected in parallel. When any one small chamber has finished releasing heat, it will store cold, while the other small chambers will supply heat.

13. A summer cooling method, characterized in that: By implementing the ice-cooling heat and power energy supply system according to claim 4, the initial state before summer cooling is: the cross-seasonal cold and heat storage device (40) contains ice slurry or ice-water mixture, the temperature is 0°C, and all valves are in a closed state; Cooling starts in summer, including: Working condition 1: heat exchanger (60) cooling mode; The first valve (1), the fifth valve (5), the sixth valve (6), and the seventh valve (7) are opened, and the ice slurry or cold water flows from the second inlet (42) through the fifth valve (5) and the first valve (1) into the second inlet (63) of the heat exchanger (60), flows out from the second outlet (64) of the heat exchanger, and flows through the sixth valve (6) and the seventh valve (7) into the first inlet (41); The return water from the return water pipeline (300) enters the first inlet (61) of the heat exchanger (60), is cooled, and then flows out from the first outlet (62) of the heat exchanger and is sent to the water supply pipeline (200) to provide external cooling. After the inter-seasonal cold and heat storage device (40) has finished discharging cold, the first valve (1), the fifth valve (5), the sixth valve (6), and the seventh valve (7) are all closed.

14. The summer cooling method according to claim 13, characterized in that: Also includes: Working condition 2: the heat exchanger (60) and the second electric refrigerator (100) provide cooling at the same time; The first valve (1), the third valve (3), the fifth valve (5), the sixth valve (6), and the seventh valve (7) are opened, and the ice slurry or cold water flows from the second inlet (42) through the fifth valve (5) and the first valve (1) into the second inlet (63) of the heat exchanger (60), flows out from the second outlet (64) of the heat exchanger, passes through the third valve (3), enters the second inlet (103) of the second electric refrigerator, flows out from the second outlet (104) of the second electric refrigerator, passes through the sixth valve (6) and the seventh valve (7), and enters the first inlet (41); The return water from the return water pipeline (300) enters the first inlet (61) of the heat exchanger (60), is cooled, and then flows out from the first outlet (62) of the heat exchanger and is sent to the water supply pipeline (200) to provide external cooling. Return water from the return water pipeline (300) enters the first inlet (101) of the second electric refrigerator (100), is cooled, and then flows out from the first outlet (102) of the second electric refrigerator and is sent to the water supply pipeline (200) for external cooling. After the inter-seasonal cold and heat storage device (40) has finished discharging cold, the first valve (1), the third valve (3), the fifth valve (5), the sixth valve (6), and the seventh valve (7) are all closed.

15. The summer cooling method according to claim 14, characterized in that: Also includes: Working condition three: the inter-seasonal cold and heat storage device (40) stores heat while the system provides cooling. The inter-seasonal cold and heat storage device (40) starts to realize the heat storage function, the absorption ice-making and heating unit (30) starts to supplement heat to the inter-seasonal cold and heat storage device (40), and the third electric refrigerator (110) provides cooling to the outside. The seventh valve (7), the tenth valve (10), and the fifteenth valve (15) are opened, and water flows from the first inlet (41) through the seventh valve (7) and the fifteenth valve (15) into the first inlet (31) of the absorption ice-making and heating unit (30), is heated, and then flows out from the first outlet (32) of the absorption ice-making and heating unit, and flows through the tenth valve (10) into the first inlet (42); Water enters the first inlet (71) of the high-temperature flue gas and water heat exchange device (70) through the seventh valve (7) and the fifteenth valve (15) from the first inlet (41), is heated, and then flows out from the first outlet (72) of the high-temperature flue gas and water heat exchange device, passes through the tenth valve (10), and enters the first inlet (42); The cold water in the absorption ice-making and heating unit (30) flows out from the second outlet (34) of the absorption ice-making and heating unit, enters the first inlet (111) of the third electric refrigerator (110), flows out from the first outlet (112) of the third electric refrigerator, and enters the second inlet (33) of the absorption ice-making and heating unit; Return water from the return water pipeline (300) enters the first inlet (113) of the third electric refrigerator (110), is cooled, and then flows out from the first outlet (114) of the third electric refrigerator and is sent to the water supply pipeline (200) for external cooling. After the inter-seasonal cold and heat storage device (40) has completed heat storage, the seventh valve (7), the tenth valve (10), and the fifteenth valve (15) are all closed.

16. The summer cooling method according to claim 14, characterized in that: Also includes: Working condition 4: The inter-seasonal cold and heat storage device (40) stores heat while the system provides cooling. The inter-seasonal cold and heat storage device (40) starts to realize the heat storage function, and the absorption ice-making and heating unit (30) starts to supplement heat to the inter-seasonal cold and heat storage device (40). At the same time, the first electric refrigerator (50) or the second electric refrigerator (100) provides cooling to the outside.

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