A carbon neutral system and method for comprehensive energy supply of greenhouse cold storage cold chain

Abstract

The application discloses a carbon neutralization system and method for comprehensive energy supply of greenhouse refrigeration cold chain, and solves the technical problem of how to provide low-carbon and efficient energy supply for comprehensive agricultural park. The carbon neutralization system for comprehensive energy supply of greenhouse refrigeration cold chain comprises a first power generation device, an absorption type ice-making heat supply unit, a greenhouse and a refrigeration cold storage. High-temperature flue gas generated by the first power generation device is input into the absorption type ice-making heat supply unit for heat exchange. The absorption type ice-making heat supply unit transfers the prepared ice to the refrigeration cold storage or other external environment for use. After the flue gas is cooled, the flue gas is input into the greenhouse for use as gas fertilizer for plant growth. The application can flexibly generate electricity, supply heat, supply cold, make ice, produce gas fertilizer and be used for plant yield increase, can be operated throughout the year, has high energy utilization efficiency, and realizes five combined production of electricity, cold, heat, ice and plants.

Description

Technical Field

[0001] This application relates to the field of urban energy technology, specifically to a carbon neutrality system and method for providing integrated energy supply for the cold chain of greenhouse cold storage. Background Technology

[0002] Under the dual carbon targets, how to reduce the energy consumption and carbon emissions of heating and cooling systems while remaining economically feasible has become an urgent problem that the industry needs to solve.

[0003] Agriculture plays a crucial role in the journey to achieving carbon peaking and carbon neutrality, and carbon neutrality in the agricultural sector is a hot topic of research in the industry. For a comprehensive agricultural park with multiple functions such as greenhouses, cold storage, vegetable processing, aquaponics, and vegetable distribution, providing low-carbon and efficient energy supply is critical. Summary of the Invention

[0004] To address the problems in the prior art, the purpose of this application is to provide a carbon-neutral system and method for integrated energy supply in the cold chain of greenhouse cold storage. This system can flexibly generate electricity, provide heat, provide cooling, make ice, and produce gas fertilizer for increasing plant yield. It can operate year-round, has high energy efficiency, and achieves five-in-one production of electricity, cooling, heat, ice, and plants.

[0005] To achieve the above technical objectives, this application adopts the following technical solution:

[0006] The first aspect of this application provides a carbon-neutral system for integrated energy supply in the cold chain of greenhouses and cold storage facilities, including a first power generation unit, an absorption ice-making and heating unit, a greenhouse, and a cold storage facility;

[0007] 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 the produced ice to the cold storage or other external environment for use. After the flue gas is cooled, it is input into the greenhouse for use as gas fertilizer for plant growth.

[0008] Optionally, the first power generation device (20) includes a fuel inlet (21) and a flue gas outlet (22), and the absorption ice-making and heating unit (30) includes a first inlet (31), a first outlet (32), a second inlet (33), a second outlet (34), a third inlet (35), and a third outlet (36);

[0009] 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);

[0010] The cold storage (300) includes a first inlet / outlet (301) and a second inlet / outlet (302), wherein the first inlet / outlet (301) is connected to the second outlet (34) and the second inlet / outlet (302) is connected to the second inlet (33);

[0011] The greenhouse (90) includes a heating and cooling water inlet (91), a heating and cooling water return outlet (92), and a gas and fertilizer distribution outlet (93). After the flue gas is cooled, it is input into the greenhouse (90) through the gas and fertilizer distribution outlet (93).

[0012] Optionally, it also includes a heat storage device (100), which includes a first inlet and outlet (101) and a second inlet and outlet (102). The first inlet and outlet (101) is connected to the heating and cooling water inlet (91), and the second inlet and outlet (102) is connected to the heating and cooling water return outlet (92).

[0013] Optionally, it also includes a cross-seasonal combined cooling and heating storage device (200), which includes a first inlet / outlet (201), a second inlet / outlet (202), a third inlet / outlet (203), and a fourth inlet / outlet (204);

[0014] The second inlet and outlet (202) are respectively connected to the second inlet (33) and the heating and cooling return water inlet (92), and the first inlet and outlet (201) are respectively connected to the second outlet (34) and the heating and cooling inlet (91);

[0015] The third inlet / outlet (203) is connected to the heating / cooling water inlet (91), and the fourth inlet / outlet (204) is connected to the heating / cooling water return outlet (92).

[0016] Optionally, it also includes a first electric heat pump (40), which includes a first inlet (41), a first outlet (42), a second inlet (43), and a second outlet (44). The first inlet (41) is connected to the heating and cooling return water inlet (92), the first outlet (42) is connected to the heating and cooling inlet (91), the second inlet (43) is connected to the first outlet (32), and the second outlet (44) is connected to the first inlet (31).

[0017] Optionally, it also includes a first flue gas water heat exchanger (50), which includes a first inlet (51), a first outlet (52), a second inlet (53), and a second outlet (54). The first inlet (51) is connected to the heating and cooling return water inlet (92), the first inlet (52) is connected to the heating and cooling inlet (91), and the second inlet (53) is connected to the third outlet (36).

[0018] Optionally, it also includes a second flue gas water heat exchanger (70) and a second electric heat pump (60). The second flue gas water heat exchanger (70) includes a first inlet (71), a first outlet (72), a second inlet (73), and a second outlet (74). The second electric heat pump (60) includes a first inlet (61), a first outlet (62), a second inlet (63), and a second outlet (64).

[0019] The first inlet (61) is connected to the heating and cooling return water inlet (92), the first outlet (62) is connected to the heating and cooling inlet (91), the second inlet (63) is connected to the first outlet (72), and the second outlet (64) is connected to the first inlet (71).

[0020] The second inlet (73) is connected to the second outlet (54).

[0021] Optionally, it also includes a flue gas purification device (80), which includes a flue gas inlet (81) and a flue gas outlet (82). The flue gas inlet (81) is connected to the second outlet (74), and the flue gas outlet (82) is connected to the gas fertilizer distribution port (93).

[0022] The flue gas purification device (80) is equipped with a gas storage tank, which is used to store flue gas and adjust the amount of gas fertilizer entering the greenhouse (90) according to the time period when the greenhouse (90) needs gas fertilizer.

[0023] Optionally, the first inlet / outlet (101) is provided with a first valve (1), and the second inlet / outlet (102) is provided with a second valve (2);

[0024] The first inlet / outlet (201) is equipped with a third valve (3), the second inlet / outlet (202) is equipped with a fourth valve (4), the third inlet / outlet (203) is equipped with a fifth valve (5), and the fourth inlet / outlet (204) is equipped with a sixth valve (6);

[0025] The first inlet / outlet (301) is equipped with a seventh valve (7), and the second inlet / outlet (302) is equipped with an eighth valve (8);

[0026] A ninth valve (9) is provided on the path connecting the first inlet / outlet (201) to the second outlet (34), a thirteenth valve (13) is provided on the path connecting the heating / cooling water inlet (91), a tenth valve (10) is provided on the path connecting the second inlet / outlet (202) to the second inlet (33), and a fourteenth valve (14) is provided on the path connecting the heating / cooling water return outlet (92).

[0027] An eleventh valve (11) is installed on the path of the heating and cooling water inlet (91) connecting the first inlet / outlet (101), the third inlet / outlet (203), the first outlet (42), the first outlet (52), and the first outlet (62). A twelfth valve (12) is installed on the path of the heating and cooling water return outlet (92) connecting the second inlet / outlet (102), the fourth inlet / outlet (204), the first inlet (41), the first inlet (51), and the first inlet (61).

[0028] Optionally, a straight pipe is connected between the second inlet (73) and the second outlet (74), and a straight pipe is connected between the first inlet (61) and the first outlet (62), so that the flue gas is directly transported to the flue gas purification device (80) without passing through the second flue gas water heat exchanger (70).

[0029] A straight pipeline connects the flue gas inlet (81) and the flue gas outlet (82), allowing the flue gas to be directly transported to the greenhouse (90) without passing through the flue gas purification device (80).

[0030] Optionally, the first power generation device (20) further includes a cylinder liner hot water outlet (23), a cylinder liner hot water inlet (24), a medium-cooled water outlet (25), and a medium-cooled water inlet (26). The absorption ice-making and heating unit (30) further includes a fourth inlet (37) and a fourth outlet (38). The cylinder liner hot water outlet (23) is connected to the fourth inlet (37), the cylinder liner hot water inlet (24) is connected to the fourth outlet (38), and the medium-cooled water outlet (25) and the medium-cooled water inlet (26) are connected to other heat exchangers.

[0031] Optionally, it also includes a first heat exchange device (400), which includes a first inlet (401), a first outlet (402), a second inlet (403), and a second outlet (404). The greenhouse (90) also includes a drain outlet (94).

[0032] The first inlet (401) is connected to the second outlet (34), and a sixteenth valve (16) is provided on the connection path. The first outlet (402) is connected to the second inlet (33), and a fifteenth valve (15) is provided on the connection path. The second inlet (403) is connected to the sewage outlet (94), and the second outlet (404) is connected to the sewage treatment device or the waste gas treatment device.

[0033] Optionally, a second heat exchange device (500) is also included. The second heat exchange device (500) is disposed on the connection path between the greenhouse (90) and the interseasonal combined cooling and heating storage device (200). The second heat exchange device (500) includes a first inlet (501), a first outlet (502), a second inlet (503), and a second outlet (504). The first inlet (501) is connected to the heating and cooling return water inlet (92), the first outlet (502) is connected to the heating and cooling inlet (91), the second inlet (503) is connected to the first inlet and outlet (201), and the second outlet (504) is connected to the second inlet and outlet (202).

[0034] Optionally, a third heat exchange device (600) is also included, which is disposed on the connection path between the greenhouse (90), the heat storage device (100), and the interseasonal combined cooling and heating storage device (200). The third heat exchange device (600) includes a first inlet (601), a first outlet (602), a second inlet (603), and a second outlet (604).

[0035] The first inlet (601) is connected to the heating and cooling return water inlet (92), the first outlet (602) is connected to the heating and cooling inlet (91), the second inlet (603) is connected to the first inlet / outlet (101) and the third inlet / outlet (203) respectively, and the second outlet (604) is connected to the second inlet / outlet (102) and the second inlet / outlet (202) respectively.

[0036] Optionally, it includes multiple greenhouses (90) connected in series or in parallel, multiple thermal storage devices (100) connected in series or in parallel, and multiple inter-seasonal combined cooling and heating storage devices (200) connected in series or in parallel.

[0037] Alternatively, the greenhouse (90), the heat storage device (100), and the interseasonal combined cooling and heating storage device (200) each include N small chambers, where N is a natural number ≥ 2, and the N small chambers are connected in parallel or in series.

[0038] Optionally, the absorption ice-making and heating unit (30) is a flue gas driven type, or a flue gas and hot water mixed driven type, or a flue gas, hot water and electricity mixed driven type;

[0039] 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;

[0040] The second flue gas water heat exchanger (70) is a partitioned heat exchanger, or a direct contact heat exchanger, or a spray tower.

[0041] The second aspect of this application provides a winter heating method implemented through the carbon neutrality system described above. The initial state before winter heating is: the interseasonal combined cooling and heating storage device and the thermal storage device contain high-temperature hot water at a temperature of 90℃-95℃, and all valves are in the closed state.

[0042] Heating begins in winter, including:

[0043] Operating Condition 1: Valve 1, Valve 2, Valve 3, Valve 4, Valve 5, Valve 6, Valve 7, Valve 8, Valve 11, and Valve 12 are open;

[0044] The cold water output from the greenhouse enters the first inlet of the first electric heat pump, the first inlet of the first flue gas water heat exchanger, and the first inlet of the second electric heat pump in parallel through the twelfth valve. The heated hot water flows out from the first outlet of the first electric heat pump, the first outlet of the first flue gas water heat exchanger, and the first outlet of the second electric heat pump, and enters the greenhouse through the eleventh valve.

[0045] Cold water output from the greenhouse enters the thermal storage device and the interseasonal combined cooling and heating storage device in parallel through the twelfth valve, the second valve, and the sixth valve. Hot water flows out from the first inlet and outlet of the thermal storage device and the third inlet and outlet of the interseasonal combined cooling and heating storage device, respectively, and enters the greenhouse through the first valve, the fifth valve, and the eleventh valve.

[0046] The high-temperature flue gas generated by the first power generation unit passes sequentially through the absorption ice-making and heating unit, the first flue gas-water heat exchanger, the second flue gas-water heat exchanger, and the flue gas purification device. After the heat is released in stages, it finally enters the greenhouse for use as gas fertilizer. The second outlet of the absorption ice-making and heating unit produces ice, part of which enters the cold storage through the seventh valve and part of which is used for cold chain sales.

[0047] Optionally, it also includes:

[0048] Operating Condition 2: After the cross-seasonal combined cooling and heating storage device (200) has finished releasing heat, the ninth valve (9) and the tenth valve (10) are opened, and the cross-seasonal combined cooling and heating storage device (200) is used to store ice. The stored ice is used for cooling in the summer.

[0049] The third aspect of this application provides a spring energy storage method, implemented through the carbon neutrality system described above. The initial state before spring energy storage is: the system stops heating, the heat storage device contains low-temperature water, and all valves are closed.

[0050] Energy storage begins in spring, including:

[0051] The first valve, the second valve, the third valve, the fourth valve, the seventh valve, the eighth valve, the ninth valve, and the tenth valve are open;

[0052] Low-temperature water in the heat storage device flows out from the second inlet and outlet, and enters the first inlet of the first electric heat pump, the first inlet of the first flue gas water heat exchanger, and the first inlet of the second electric heat pump in parallel through the second valve. The heated hot water flows out from the first outlet of the first electric heat pump, the first outlet of the first flue gas water heat exchanger, and the first outlet of the second electric heat pump, and enters the first inlet and outlet of the heat storage device through the first valve to store the heat.

[0053] The high-temperature flue gas generated by the first power generation unit passes sequentially through the absorption ice-making and heating unit, the first flue gas-water heat exchanger, the second flue gas-water heat exchanger, and the flue gas purification device. After the heat is released in stages, it finally enters the greenhouse for use as gas fertilizer. The ice produced at the second outlet of the absorption ice-making and heating unit is partially used in the cold storage through the seventh valve, partially sold through the cold chain, and partially input from the first inlet and outlet of the cross-seasonal combined cooling and heating unit through the ninth and third valves to continue storing ice. The stored ice is used for cooling in the summer.

[0054] The fourth aspect of this application provides a summer cooling method, implemented through the carbon neutralization system described above. The initial state before summer cooling is: the cross-seasonal combined cooling and heating storage device contains ice slurry or ice-water mixture at a temperature of 0°C, the heat storage device contains low-temperature water, and all valves are in the closed state.

[0055] Summer begins with cooling measures, including:

[0056] The first valve, the second valve, the third valve, the fourth valve, the seventh valve, the eighth valve, the ninth valve, the tenth valve, the thirteenth valve, and the fourteenth valve are open;

[0057] The return water from the greenhouse enters the second inlet and outlet of the interseasonal combined cooling and heating system through the fourteenth valve and the fourth valve. The ice slurry or cold water is output from the first inlet and outlet of the interseasonal combined cooling and heating system through the third valve and the thirteenth valve to the greenhouse for summer cooling.

[0058] Low-temperature water in the heat storage device flows out from the second inlet and outlet, and enters the first inlet of the first electric heat pump, the first inlet of the first flue gas water heat exchanger, and the first inlet of the second electric heat pump in parallel through the second valve. The heated hot water flows out from the first outlet of the first electric heat pump, the first outlet of the first flue gas water heat exchanger, and the first outlet of the second electric heat pump, and enters the first inlet and outlet of the heat storage device through the first valve to store the heat.

[0059] The high-temperature flue gas generated by the first power generation unit passes sequentially through the absorption ice-making and heating unit, the first flue gas-water heat exchanger, the second flue gas-water heat exchanger, and the flue gas purification device. After the heat is released in stages, it finally enters the greenhouse for use as gas fertilizer. The ice produced at the second outlet of the absorption ice-making and heating unit is partially used in the cold storage through the seventh valve, partially used for cold chain sales, and partially input from the first inlet and outlet of the cross-seasonal combined cooling and heating storage unit through the ninth and third valves to continue storing ice.

[0060] When summer cooling ends, all the ice in the interseasonal combined cooling and heating system is released and turns into low-temperature water.

[0061] The fifth aspect of this application provides an autumn energy storage method, implemented through the carbon neutrality system described above. The initial state before autumn energy storage is: the system stops cooling, the thermal storage device and the inter-seasonal combined cooling and heating storage device are filled with low-temperature water, and all valves are closed.

[0062] Energy storage begins in autumn, including:

[0063] The first valve, the second valve, the third valve, the fourth valve, the fifth valve, the sixth valve, the seventh valve, and the eighth valve are opened;

[0064] Low-temperature water in the thermal storage device flows out from the second inlet and outlet, and low-temperature water in the inter-seasonal combined cooling and heating storage device flows out from the fourth inlet and outlet. It enters the first inlet of the first electric heat pump, the first inlet of the first flue gas-water heat exchanger, and the first inlet of the second electric heat pump through the second valve and the sixth valve in parallel. The heated hot water flows out from the first outlet of the first electric heat pump, the first outlet of the first flue gas-water heat exchanger, and the first outlet of the second electric heat pump, respectively. It enters the first inlet and outlet of the thermal storage device through the first valve, and the third inlet and outlet of the inter-seasonal combined cooling and heating storage device through the fifth valve, so as to store the heat.

[0065] The high-temperature flue gas generated by the first power generation unit passes through the absorption ice-making and heating unit, the first flue gas-water heat exchanger, the second flue gas-water heat exchanger, and the flue gas purification device in sequence. After the heat is released in stages, it finally enters the greenhouse for use as gas fertilizer. The second outlet of the absorption ice-making and heating unit produces ice, part of which enters the cold storage through the seventh valve and part of which is used for cold chain sales.

[0066] When the autumn energy storage ends, the thermal storage devices and cross-seasonal combined cooling and heating storage devices will all become high-temperature hot water.

[0067] As can be seen from the above technical solutions, this application provides a carbon neutrality system for integrated cold chain energy supply in greenhouse cold storage, a winter heating method, a spring energy storage method, a summer cooling method, and an autumn energy storage method, which have the following advantages:

[0068] This patent proposes an ice, cold, electric, hot, and plant system that can produce five products.

[0069] The system's utilization hours have been greatly increased, overcoming the problem of poor economic efficiency in conventional combined heat and power systems.

[0070] With the same power generation capacity as conventional combined heat and power (CHP) systems, the system can not only increase heating capacity but also cooling capacity, resulting in significant improvements in both heating and cooling capacity and overall energy efficiency throughout the year.

[0071] The high-temperature flue gas generated by the first power generation unit can fully absorb waste heat, enabling deep recovery of waste heat from the flue gas in summer, improving system energy efficiency, and making it more energy-efficient under combined cooling and power (CCHP) conditions.

[0072] Heating and cooling can share a single distribution network, with heating and cooling systems operating on the same network.

[0073] It features a daily peak-shaving mode, enabling daily peak-shaving of electricity throughout the year. Because the system incorporates a cross-seasonal combined cooling and heating storage device, it can store cold or heat within a small compartment within a day. During peak electricity demand periods, when the grid is short of power, the system uses its own cold and heat storage to provide cooling and heating, without using peak electricity. During off-peak periods, when the grid encourages users to use more electricity, the system can generate additional cold and heat by using more electricity and storing it in a small compartment of the cross-seasonal combined cooling and heating storage device.

[0074] Spring and autumn can also store both cold and heat, releasing the cold in summer and the heat in winter.

[0075] Some of the ice produced can also be sold directly for use in the cold chain. Attached Figure Description

[0076] Figure 1 This is a schematic diagram of the carbon neutralization system according to an embodiment of this application;

[0077] Figure 2 This is a schematic diagram of the carbon neutralization system according to an embodiment of this application;

[0078] Figure 3 This is a schematic diagram of the carbon neutralization system according to an embodiment of this application;

[0079] Figure 4 This is a schematic diagram of the carbon neutralization system according to an embodiment of this application;

[0080] Figure 5 This is a schematic diagram of the carbon neutralization system according to an embodiment of this application;

[0081] Figure 6 This is a schematic diagram of the carbon neutralization system according to an embodiment of this application.

[0082] Explanation of reference numerals in the attached diagram: 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; 15. Fifteenth valve; 16. Sixteenth valve;

[0083] 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. Intercooling water outlet; 26. Intercooling water inlet;

[0084] 30. Absorption type ice-making and heating unit; 31. First inlet; 32. First outlet; 33. Second inlet; 34. Second outlet; 35. Third inlet; 36. Third outlet; 37. Fourth inlet; 38. Fourth outlet;

[0085] 40. First electric heat pump; 41. First inlet; 42. First outlet; 43. Second inlet; 44. Second outlet;

[0086] 50. First flue gas-water heat exchanger; 51. First inlet; 52. First outlet; 53. Second inlet; 54. Second outlet;

[0087] 60. Second electric heat pump; 61. First inlet; 62. First outlet; 63. Second inlet; 64. Second outlet;

[0088] 70. Second flue gas-water heat exchanger; 71. First inlet; 72. First outlet; 73. Second inlet; 74. Second outlet;

[0089] 80. Flue gas purification device; 81. Flue gas inlet; 82. Flue gas outlet;

[0090] 90. Greenhouse; 91. Heating and cooling water inlet; 92. Heating and cooling water return outlet; 93. Gas and fertilizer distribution outlet; 94. Sewage outlet;

[0091] 100. Thermal storage device; 101. First inlet / outlet; 102. Second inlet / outlet;

[0092] 200. Interseasonal combined cooling and heating storage unit; 201. First inlet / outlet; 202. Second inlet / outlet; 203. Third inlet / outlet; 204. Fourth inlet / outlet;

[0093] 300. Cold storage; 301. First entrance / exit; 302. Second entrance / exit;

[0094] 400. First heat exchanger; 401. First inlet; 402. First outlet; 403. Second inlet; 404. Second outlet;

[0095] 500, Second heat exchanger; 501, First inlet; 502, First outlet; 503, Second inlet; 504, Second outlet;

[0096] 600, Third heat exchanger; 601, First inlet; 602, First outlet; 603, Second inlet; 604, Second outlet. Detailed Implementation

[0097] The core idea of ​​this application is:

[0098] The high-temperature flue gas produced by burning natural gas is used to make ice while simultaneously generating heat. The low-temperature waste heat of the flue gas is then fully utilized. Finally, the flue gas (containing carbon dioxide) is introduced into greenhouses for plants to absorb and utilize, achieving complete energy and resource utilization and increasing plant yield. Carbon dioxide is an essential raw material for plant photosynthesis. However, plants cultivated in greenhouses grow under specific environmental conditions, and the greenhouses are mostly closed. Therefore, the carbon dioxide required for plant growth can only come from the air, the respiration of plants and soil microorganisms, and the decomposition by soil microorganisms. However, respiration and decomposition release a small amount of carbon dioxide into the atmosphere at a relatively slow rate. Typically, the carbon dioxide concentration inside the greenhouse reaches its maximum in the morning before sunlight exposure. Afterward, as photosynthesis proceeds, the indoor carbon dioxide concentration gradually decreases, reaching its lowest value before ventilation. This decrease in carbon dioxide concentration slows down the photosynthetic rate of plants in the greenhouse, affecting normal plant growth and development, and causing crop yield reduction. Therefore, supplementing the greenhouse with an appropriate amount of carbon dioxide is of great significance for enhancing plant disease resistance and immunity, developing pollution-free production, and increasing yield.

[0099] The system can operate year-round, promoting plant production and providing energy throughout the year, making it economically efficient. The system can recover waste heat from flue gas with an efficiency of over 95% throughout the year. While obtaining heat, the system can also produce ice free of charge, which is used for cooling and cold chain logistics.

[0100] The system can perform peak shaving for the entire power grid. It can flexibly adjust power generation based on grid dispatch conditions, ensuring that its power generation complements that of the main grid's renewable energy generation, thus contributing to peak shaving for the power system. The system contains power generation equipment that is subject to grid dispatch. When renewable energy generation on the main grid is high, the grid will dispatch the system to stop generating power. When renewable energy (wind and solar) is depleted on the main grid, the system can generate power to support the grid, thus achieving peak shaving for the power system.

[0101] The entire system has storage devices in each link of cooling, heating, ice, and plant production enhancement. When power generation stops, the system can provide heating and cooling because of the heat and cold storage devices, thus ensuring uninterrupted heating and cooling.

[0102] To better understand the purpose, structure, and function of this application, the following detailed description, in conjunction with the accompanying drawings, provides a carbon neutrality system and method for integrated energy supply in the cold chain of greenhouse cold storage.

[0103] Example 1

[0104] like Figure 1 The image shown is Embodiment 1 of this application. This embodiment provides a carbon-neutral system for integrated energy supply for the cold chain of greenhouses and cold storage, including a first power generation unit 20, an absorption ice-making and heating unit 30, a greenhouse 90, and a cold storage 300.

[0105] The high-temperature flue gas generated by the first power generation unit 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 produced ice to the cold storage 300 or other external environments for use. After the flue gas is cooled, it is input into the greenhouse 90 for use as gas fertilizer for plant growth.

[0106] Greenhouse 90 can be an agricultural greenhouse, glass greenhouse, or similar structure used to grow various plants, with carbon dioxide in the flue gas used to increase plant yield. Cold storage 300 is used to store items that require refrigeration or freezing, necessitating the use of ice. Other external environments refer to places that also require the use of ice, such as cold chain markets, food processing plants, etc.

[0107] In one embodiment, the first power generation unit 20 includes a fuel inlet 21 and a flue gas outlet 22, and the absorption ice-making and heating unit 30 includes a first inlet 31, a first outlet 32, a second inlet 33, a second outlet 34, a third inlet 35, and a third outlet 36.

[0108] Fuel enters the first power generation unit 20 from fuel inlet 21, and the generated high-temperature flue gas is discharged from flue gas outlet 22, which is connected to the third inlet 35.

[0109] The cold storage 300 includes a first inlet / outlet 301 and a second inlet / outlet 302. The first inlet / outlet 301 is connected to the second outlet 34, and the second inlet / outlet 302 is connected to the second inlet 33.

[0110] Greenhouse 90 includes a heating and cooling water inlet 91, a heating and cooling water return outlet 92, and a gas and fertilizer distribution outlet 93. After the flue gas is cooled, it is fed into greenhouse 90 through the gas and fertilizer distribution outlet 93.

[0111] In one embodiment, the device further includes a heat storage device 100, which includes a first inlet / outlet 101 and a second inlet / outlet 102. The first inlet / outlet 101 is connected to a heating / cooling water inlet 91, and the second inlet / outlet 102 is connected to a heating / cooling water return outlet 92.

[0112] In one embodiment, it also includes a cross-seasonal combined cooling and heating storage device 200, which includes a first inlet / outlet 201, a second inlet / outlet 202, a third inlet / outlet 203, and a fourth inlet / outlet 204.

[0113] The second inlet and outlet 202 are respectively connected to the second inlet 33 and the heating and cooling return water inlet 92, and the first inlet and outlet 201 are respectively connected to the second outlet 34 and the heating and cooling inlet 91;

[0114] The third inlet / outlet 203 connects to the heating / cooling water inlet 91, and the fourth inlet / outlet 204 connects to the heating / cooling water return outlet 92.

[0115] In one embodiment, the system further includes a first electric heat pump 40, which includes a first inlet 41, a first outlet 42, a second inlet 43, and a second outlet 44. The first inlet 41 is connected to a heating / cooling return water inlet 92, the first outlet 42 is connected to a heating / cooling inlet 91, the second inlet 43 is connected to the first outlet 32, and the second outlet 44 is connected to the first inlet 31.

[0116] In one embodiment, the system further includes a first flue gas-water heat exchanger 50, which includes a first inlet 51, a first outlet 52, a second inlet 53, and a second outlet 54. The first inlet 51 is connected to a heating / cooling return water inlet 92, the first inlet 52 is connected to a heating / cooling inlet 91, and the second inlet 53 is connected to a third outlet 36.

[0117] In one embodiment, the system further includes a second flue gas water heat exchanger 70 and a second electric heat pump 60. The second flue gas water heat exchanger 70 includes a first inlet 71, a first outlet 72, a second inlet 73, and a second outlet 74. The second electric heat pump 60 includes a first inlet 61, a first outlet 62, a second inlet 63, and a second outlet 64.

[0118] The first inlet 61 is connected to the heating and cooling return water inlet 92, the first outlet 62 is connected to the heating and cooling inlet 91, the second inlet 63 is connected to the first outlet 72, and the second outlet 64 is connected to the first inlet 71.

[0119] The second entrance 73 connects to the second exit 54.

[0120] In one embodiment, the system further includes a flue gas purification device 80, which includes a flue gas inlet 81 and a flue gas outlet 82. The flue gas inlet 81 is connected to a second outlet 74, and the flue gas outlet 82 is connected to a gas fertilizer delivery port 93.

[0121] In one embodiment, the flue gas purification device 80 is equipped with a gas storage tank for storing flue gas and adjusting the amount of gas fertilizer entering the greenhouse 90 according to the time period when the greenhouse 90 needs gas fertilizer.

[0122] In one embodiment, the first inlet / outlet 101 is provided with a first valve 1, and the second inlet / outlet 102 is provided with a second valve 2;

[0123] The first inlet / outlet 201 is equipped with a third valve 3, the second inlet / outlet 202 is equipped with a fourth valve 4, the third inlet / outlet 203 is equipped with a fifth valve 5, and the fourth inlet / outlet 204 is equipped with a sixth valve 6;

[0124] The first inlet / outlet 301 is equipped with a seventh valve 7, and the second inlet / outlet 302 is equipped with an eighth valve 8;

[0125] A ninth valve 9 is installed on the path connecting the first inlet / outlet 201 to the second outlet 34, a thirteenth valve 13 is installed on the path connecting the heating / cooling water inlet 91, a tenth valve 10 is installed on the path connecting the second inlet / outlet 202 to the second inlet 33, and a fourteenth valve 14 is installed on the path connecting the heating / cooling water return outlet 92.

[0126] An eleventh valve 11 is installed on the path of the heating and cooling water inlet 91 connecting the first inlet / outlet 101, the third inlet / outlet 203, the first outlet 42, the first outlet 52, and the first outlet 62. A twelfth valve 12 is installed on the path of the heating and cooling water return outlet 92 connecting the second inlet / outlet 102, the fourth inlet / outlet 204, the first inlet 41, the first inlet 51, and the first inlet 61.

[0127] The valves mentioned above can be solenoid valves for easy automatic control.

[0128] In one embodiment, such as Figure 2 As shown, a straight pipe connects the second inlet 73 and the second outlet 74, and a straight pipe connects the first inlet 61 and the first outlet 62. The flue gas is directly transported to the flue gas purification device 80 without passing through the second flue gas water heat exchanger 70.

[0129] Valves need to be installed on the straight-through pipeline. By adopting this structure, the second flue gas water heat exchanger 70 and the second electric heat pump 60 can be shut down when it is not necessary to further reduce the flue gas exhaust temperature.

[0130] In one embodiment, a straight pipeline connects the flue gas inlet 81 and the flue gas outlet 82, allowing the flue gas to be directly transported to the greenhouse 90 without passing through the flue gas purification device 80.

[0131] Valves need to be installed on the straight-through pipeline. When the flue gas conditions are good and purification is not required, it can be directly introduced into greenhouse 90.

[0132] In one embodiment, such as Figure 3As shown, the first power generation unit 20 also includes a cylinder liner hot water outlet 23, a cylinder liner hot water inlet 24, a medium-cooled water outlet 25, and a medium-cooled water inlet 26. The absorption ice-making and heating unit 30 also includes a fourth inlet 37 and a fourth outlet 38. The cylinder liner hot water outlet 23 is connected to the fourth inlet 37, the cylinder liner hot water inlet 24 is connected to the fourth outlet 38, and the medium-cooled water outlet 25 and the medium-cooled water inlet 26 are connected to other heat exchangers.

[0133] The heat from the cylinder liner hot water can also be used to drive ice making. Intercooled water is used to cool the lubricating oil in the first power generation unit 20. The intercooled water discharged from the intercooled water outlet 25 has a higher temperature and can be fed into other heat exchangers for external heating.

[0134] In one embodiment, such as Figure 4 As shown, it also includes a first heat exchange device 400, which includes a first inlet 401, a first outlet 402, a second inlet 403, and a second outlet 404. The greenhouse 90 also includes a drain outlet 94.

[0135] The first inlet 401 is connected to the second outlet 34, and a sixteenth valve 16 is installed in the connection path. The first outlet 402 is connected to the second inlet 33, and a fifteenth valve 15 is installed in the connection path. The second inlet 403 is connected to the sewage outlet 94, and the second outlet 404 is connected to the sewage treatment device or the waste gas treatment device.

[0136] The system pauses ice making during periods when it needs to store hot water at higher temperatures.

[0137] Wastewater discharged from greenhouse 90 releases heat to the system as low-grade heat through the first heat exchange device 400 and is sent to the absorption ice-making and heating unit 30. Hot water at a higher temperature can be obtained on the absorber and condenser side of the absorption ice-making and heating unit 30.

[0138] The drain outlet 94 of the greenhouse 90 can discharge sewage or other forms of heat, such as hot air from the greenhouse. In this case, the first heat exchange device 400 can be a water-to-water heat exchange device or a wind-to-water heat exchange device, etc. The form is not limited, as long as its function is to extract waste heat from the greenhouse 90, it is considered the same as this patent.

[0139] The first heat exchange device 400 can also extract heat from the environment instead of the greenhouse 90. Any system can be connected to the system for use with available air sources, water sources, ground sources, and various waste heat sources in the surrounding area.

[0140] In one embodiment, such as Figure 5As shown, it also includes a second heat exchange device 500, which is installed on the connection path between the greenhouse 90 and the inter-seasonal combined cooling and heating storage device 200. The second heat exchange device 500 includes a first inlet 501, a first outlet 502, a second inlet 503, and a second outlet 504. The first inlet 501 is connected to the heating and cooling return water inlet 92, the first outlet 502 is connected to the heating and cooling inlet 91, the second inlet 503 is connected to the first inlet / outlet 201, and the second outlet 504 is connected to the second inlet / outlet 202.

[0141] By adopting this structure, the system can indirectly release cooling through the second heat exchange device 500 when cooling. The heat transfer medium in the greenhouse 90 can be of a different type than the heat transfer medium in the interseasonal combined cooling and heating storage device 200. For example, the heat transfer medium in the greenhouse 90 can be wind, while the heat transfer medium in the interseasonal combined cooling and heating storage device 200 can be water.

[0142] In one embodiment, such as Figure 6 As shown, it also includes a third heat exchange device 600, which is installed on the connection path between the greenhouse 90 and the heat storage device 100 and the inter-seasonal combined cooling and heating storage device 200. The third heat exchange device 600 includes a first inlet 601, a first outlet 602, a second inlet 603, and a second outlet 604. The first inlet 601 is connected to the heating and cooling return water inlet 92, the first outlet 602 is connected to the heating and cooling inlet 91, the second inlet 603 is connected to the first inlet / outlet 101 and the third inlet / outlet 203 respectively, and the second outlet 604 is connected to the second inlet / outlet 102 and the second inlet / outlet 202 respectively.

[0143] By adopting this structure, the system indirectly exchanges heat through the third heat exchange device 600 during heat exchange. The heat transfer medium in the greenhouse 90 can be of a different type than the heat transfer medium in the heat storage device 100 and the inter-seasonal combined cooling and heating device 200. For example, the heat transfer medium in the greenhouse 90 can be wind, while the heat transfer medium in the heat storage device 100 and the inter-seasonal combined cooling and heating device 200 can be water.

[0144] In one embodiment, it includes multiple greenhouses 90 connected in series or in parallel, multiple thermal storage devices 100 connected in series or in parallel, and multiple inter-seasonal combined cooling and heating storage devices 200 connected in series or in parallel.

[0145] Alternatively, greenhouse 90, thermal storage device 100, and interseasonal combined cooling and heating storage device 200 each include N small chambers, where N is a natural number ≥ 2, and the N small chambers are connected in parallel or in series.

[0146] In one embodiment, the absorption ice-making and heating unit 30 is a flue gas driven type, or a flue gas and hot water mixed driven type, or a flue gas, hot water and electric mixed driven type. The ice maker 30 may not make ice, but only output cold water.

[0147] In one embodiment, 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.

[0148] In one embodiment, the second flue gas water heat exchanger 70 is an indirect heat exchanger, or a direct contact heat exchanger, or a spray tower.

[0149] The cross-seasonal combined cooling and heating storage device 200 in the system is not limited to the four interfaces mentioned in the text, and the thermal storage device 100 is not limited to two interfaces. The number of interfaces can be adjusted. As long as the function is the same as that of this patent, they are all within the scope of protection of this patent. For example, there can be more than two interfaces.

[0150] The interseasonal combined cooling and heating storage device 200 can solve the problem of ice slurry stratification and the formation of a rich ice layer after interseasonal ice storage in large ice storage tanks, making it impossible to transport ice slurry. It can achieve uniform and continuous transportation of ice slurry in large ice storage tanks. The structure can be set up as follows: including an ice storage tank, ice conveying pipes, and return water pipes. The ice storage tank includes an ice slurry zone and a settling zone, and the bottoms of the ice slurry zone and the settling zone are interconnected. The ice conveying pipes and return water pipes are connected to the ice slurry zone and the settling zone, respectively. It also includes: a stirrer and an ice extractor. The stirrer is located in the ice slurry zone, and the ice extractor is located in the upper part of the settling zone. The stirrer mixes solid ice and water to form ice slurry and adjusts the ice slurry concentration. The ice extractor is used to transport solid ice from the settling zone to the ice slurry zone.

[0151] The various components described above, such as the first power generation unit 20, the absorption ice-making and heating unit 30, the first electric heat pump 40, the first flue gas-water heat exchanger 50, the second electric heat pump 60, the second flue gas-water heat exchanger 70, the flue gas purification device 80, the heat storage device 100, the first heat exchange device 400, the second heat exchange device 500, and the third heat exchange device 600, have internal structures that can be referenced from existing technologies and will not be described in detail here. The various interfaces on these devices are connected to one or more functional components inside the devices to achieve different functions such as heating, cooling, and transporting the medium. Those skilled in the art, after understanding the specific structure of the devices, can fully understand their working principles.

[0152] Example 2

[0153] This embodiment provides a winter heating method, implemented using the carbon-neutral system for integrated energy supply to greenhouses and cold storage cold chains as described in Embodiment 1, with reference to... Figure 1-6As shown. The functions of this winter mode are: ① Utilizing the heat in the interseasonal combined cooling and heating system 200 for simultaneous heating, and then storing the cold produced by the absorption ice-making heating unit 30 after the heat is supplied. ② Utilizing the absorption ice-making heating unit 30, deeply extracting phase change heat from water, using both the waste heat from the flue gas or electricity used for driving and the phase change heat extracted from the water for heating, while obtaining free ice slurry or cold water, storing the obtained ice slurry or cold water in the interseasonal combined cooling and heating system 200, storing the cold energy until the summer cooling season when it is used for the cooling of the greenhouse 90.

[0154] The initial state before winter heating is: the interseasonal combined cooling and heating storage device 200 and the heat storage device 100 contain high-temperature hot water with a temperature of 90℃-95℃, and all valves are closed.

[0155] Heating begins in winter, including:

[0156] Operating Condition 1: Valve 1, Valve 2, Valve 3, Valve 4, Valve 5, Valve 6, Valve 7, Valve 8, Valve 11, and Valve 12 are open;

[0157] The cold water output from greenhouse 90 enters in parallel through the twelfth valve 12 into the first inlet 41 of the interseasonal combined cooling and heating storage device 40, the first inlet 51 of the first flue gas water heat exchanger 50, and the first inlet 61 of the second electric heat pump 60. The heated hot water flows out from the first outlet 42 of the interseasonal combined cooling and heating storage device 40, the first outlet 52 of the first flue gas water heat exchanger 50, and the first outlet 62 of the second electric heat pump 60, and enters greenhouse 90 through the eleventh valve 11.

[0158] Cold water output from greenhouse 90 enters the thermal storage device 100 and the interseasonal combined cooling and heating storage device 200 in parallel through the twelfth valve 12, the second valve 2, and the sixth valve 6. Hot water flows out from the first inlet and outlet 101 of the thermal storage device 100 and the third inlet and outlet 203 of the interseasonal combined cooling and heating storage device 200, respectively, and enters greenhouse 90 through the first valve 1, the fifth valve 5, and the eleventh valve 11.

[0159] The high-temperature flue gas generated by the first power generation unit 20 passes sequentially through the absorption ice-making and heating unit 30, the first flue gas-water heat exchanger 50, the second flue gas-water heat exchanger 70, and the flue gas purification device 80. After the heat is released in stages, it finally enters the greenhouse 90 for use as gas fertilizer. The second outlet 34 of the absorption ice-making and heating unit 30 produces ice, part of which enters the cold storage 300 through the seventh valve 7 for use, and part of which is used for cold chain sales.

[0160] In one embodiment, there is also a second operating condition: after the cross-seasonal combined cooling and heating storage device 200 has finished releasing heat, the ninth valve 9 and the tenth valve 10 are opened, and the cross-seasonal combined cooling and heating storage device 200 is used to store ice, which is then used for cooling during the summer.

[0161] The reduction in initial investment is reflected in:

[0162] At this point, the system's heat supply consists of two parts: one part is supplied by the 30-degree deep heating unit of the absorption ice-making heating unit; the other part is supplied by the heat stored in the 200-unit inter-seasonal combined cooling and heating storage device. During system configuration, the 200-unit inter-seasonal combined cooling and heating storage device is used to handle peak heating loads, reducing the installation and associated costs of the heat source. If conventional heating uses a gas-fired boiler, it saves on the investment in the gas-fired boiler and the associated infrastructure costs such as the gas source, gas network, and gas pressure regulating station (heat and gas synergy). If conventional heating uses combined heat and power (CHP) or electric heat pumps, it saves on the investment in CHP and electric heat pumps and the associated infrastructure costs such as the power supply, power grid, and substation (heat and electricity synergy).

[0163] The seasonal peak-shaving function is reflected in:

[0164] In winter, a portion of the total heating supply comes from heat stored in greenhouses during the summer by the inter-seasonal combined cooling and heating (CCHP) unit 200, effectively reducing the total winter heating supply. In terms of operation, the stored heat is used to offset peak heating loads (for heating during severe cold periods), further reducing peak heating demand. During severe cold periods, the demand for heat is high, and this heat is of high value. Compared to gas-fired heating, this effectively saves on the most expensive natural gas during severe cold periods, enabling peak shaving for gas-fired power generation and achieving synergy between heat and gas. Looking to the future, the power grid will experience power shortages in winter. By reducing the heating supply through inter-seasonal heat release, the combined heat and power (CHP) system can generate more electricity, contributing to seasonal peak shaving for the power grid and achieving CHP synergy. (It reduces peak heating demand, contributes to peak shaving for both gas and electricity.)

[0165] Example 3

[0166] This embodiment provides a spring energy storage method, implemented using the carbon-neutral system for integrated cold chain energy supply in greenhouses and cold storage as described in Embodiment 1, with reference to... Figure 1-6 As shown in the diagram. In spring, this model achieves the following function: the system promotes increased plant production while simultaneously making, storing, and selling ice, and also stores heat.

[0167] The initial state before spring energy storage is: the system stops heating, the heat storage device 100 contains low-temperature water with a reference temperature of 1℃-10℃, and all valves are closed;

[0168] Energy storage begins in spring, including:

[0169] First valve 1, second valve 2, third valve 3, fourth valve 4, seventh valve 7, eighth valve 8, ninth valve 9, and tenth valve 10 are open;

[0170] Low-temperature water in the thermal storage device 100 flows out from the second inlet and outlet 102 and enters the first inlet 41 of the interseasonal combined cooling and heating storage device 40, the first inlet 51 of the first flue gas water heat exchanger 50, and the first inlet 61 of the second electric heat pump 60 through the second valve 2. The heated hot water flows out from the first outlet 42 of the interseasonal combined cooling and heating storage device 40, the first outlet 52 of the first flue gas water heat exchanger 50, and the first outlet 62 of the second electric heat pump 60, and enters the first inlet and outlet 101 of the thermal storage device 100 through the first valve 1 to store the heat.

[0171] The high-temperature flue gas generated by the first power generation unit 20 passes sequentially through the absorption ice-making and heating unit 30, the first flue gas-water heat exchanger 50, the second flue gas-water heat exchanger 70, and the flue gas purification device 80. After the heat is released in stages, it finally enters the greenhouse 90 for use as gas fertilizer. The second outlet 34 of the absorption ice-making and heating unit 30 produces ice. Part of it enters the cold storage 300 through the seventh valve 7 for use, part of it is used for cold chain sales, and part of it is input from the first inlet and outlet 201 of the cross-seasonal cold and heat storage device 200 through the ninth valve 9 and the third valve 3 to continue storing ice. The stored ice is used for cooling in the summer.

[0172] Example 4

[0173] This embodiment provides a summer cooling method, implemented using the carbon-neutral system for integrated energy supply to a greenhouse cold storage cold chain as described in Embodiment 1, with reference to... Figure 1-6 As shown. The function of this summer mode is to release the cold energy stored in the interseasonal combined cooling and heating storage device 200. This cold energy, obtained free of charge during winter, is used for cooling greenhouse 90. This significantly reduces the total energy consumption for cooling and also reduces the investment in power generation capacity, transmission and distribution, and electric refrigeration equipment that would otherwise be required for this cooling. When the stored cold energy is insufficient to meet the total cooling demand, conventional electric refrigeration can be used to supplement it.

[0174] The initial state before summer cooling is as follows: the cross-seasonal combined cooling and heating storage device 200 contains ice slurry or ice-water mixture at a temperature of 0℃, the heat storage device 100 contains low-temperature water with a reference water temperature of 1℃-10℃, and all valves are in the closed state.

[0175] Summer begins with cooling measures, including:

[0176] First valve 1, second valve 2, third valve 3, fourth valve 4, seventh valve 7, eighth valve 8, ninth valve 9, tenth valve 10, thirteenth valve 13, and fourteenth valve 14 are open;

[0177] The return water from greenhouse 90 enters the second inlet and outlet 202 of the interseasonal combined cooling and heating storage device 200 through the fourteenth valve 14 and the fourth valve 4. Ice slurry or cold water is output from the first inlet and outlet 201 of the interseasonal combined cooling and heating storage device 200 through the third valve 3 and the thirteenth valve 13 to greenhouse 90 for summer cooling of greenhouse 90.

[0178] Low-temperature water in the thermal storage device 100 flows out from the second inlet and outlet 102 and enters the first inlet 41 of the interseasonal combined cooling and heating storage device 40, the first inlet 51 of the first flue gas water heat exchanger 50, and the first inlet 61 of the second electric heat pump 60 through the second valve 2. The heated hot water flows out from the first outlet 42 of the interseasonal combined cooling and heating storage device 40, the first outlet 52 of the first flue gas water heat exchanger 50, and the first outlet 62 of the second electric heat pump 60, and enters the first inlet and outlet 101 of the thermal storage device 100 through the first valve 1 to store the heat.

[0179] The high-temperature flue gas generated by the first power generation unit 20 passes sequentially through the absorption ice-making and heating unit 30, the first flue gas-water heat exchanger 50, the second flue gas-water heat exchanger 70, and the flue gas purification device 80. After the heat is released in stages, it finally enters the greenhouse 90 for use as gas fertilizer. The second outlet 34 of the absorption ice-making and heating unit 30 produces ice. Part of it enters the cold storage 300 through the seventh valve 7 for use, part of it is used for cold chain sales, and part of it is input from the first inlet and outlet 201 of the cross-seasonal cold and heat storage device 200 through the ninth valve 9 and the third valve 3 to continue storing ice.

[0180] When summer cooling ends, all the ice in the interseasonal combined cooling and heating storage unit 200 is released and turns into low-temperature water.

[0181] The reduction in initial investment is reflected in:

[0182] At this time, the cooling capacity of the system consists of two parts: one part is the cooling provided by the absorption ice-making heating unit 30; the other part is the cooling provided by the inter-seasonal combined cooling and heating unit 200. The system uses the peak cooling load stored in the inter-seasonal combined cooling and heating unit 200, which greatly reduces the installation and supporting costs of the cold source (saving the cost of the electric chiller, supporting power supply, power grid, substation and other infrastructure).

[0183] The seasonal peak-shaving function is reflected in:

[0184] In summer, the power grid's air conditioning electricity consumption creates seasonal peaks in electricity demand. Regarding the total cooling supply, a portion of the cooling is obtained free of charge during winter, effectively reducing the total summer cooling demand and thus reducing the total electricity consumption of air conditioning. In terms of operation, the stored cooling capacity is used to offset peak cooling loads (cooling during the hottest month), effectively reducing peak cooling demand. The hottest months of summer have high cooling demand, and the cooling provided during this time is of high value. This cooling replaces conventional electric cooling, saving electricity consumption during the hottest months, thus reducing peak summer air conditioning electricity demand. This contributes to seasonal peak shaving for the power grid, achieving synergy between cooling and electricity. (It itself reduces the peak cooling demand, contributing to power peak shaving.)

[0185] Example 5

[0186] This embodiment provides an autumn energy storage method, implemented using the carbon-neutral system for integrated cold chain energy supply in greenhouses and cold storage as described in Embodiment 1, with reference to... Figure 1-6 As shown in the diagram. The function of this autumn mode is to promote increased plant production while simultaneously making, storing, and selling ice, and also to store heat.

[0187] The initial state before autumn energy storage is: the system stops cooling, the thermal storage device 100 and the inter-seasonal combined cooling and heating storage device 200 are both filled with low-temperature water, with a reference water temperature of 1℃-10℃, and all valves are closed.

[0188] Energy storage begins in autumn, including:

[0189] First valve 1, second valve 2, third valve 3, fourth valve 4, fifth valve 5, sixth valve 6, seventh valve 7, and eighth valve 8 are open;

[0190] Low-temperature water in the thermal storage device 100 flows out from the second inlet / outlet 102, and low-temperature water in the interseasonal combined cooling and heating storage device 200 flows out from the fourth inlet / outlet 204. It enters the first inlet 41 of the interseasonal combined cooling and heating storage device 40, the first inlet 51 of the first flue gas water heat exchanger 50, and the first inlet 61 of the second electric heat pump 60 through the second valve 2 and the sixth valve 6 in parallel. The heated hot water flows out from the first outlet 42 of the interseasonal combined cooling and heating storage device 40, the first outlet 52 of the first flue gas water heat exchanger 50, and the first outlet 62 of the second electric heat pump 60, respectively. It enters the first inlet / outlet 101 of the thermal storage device 100 through the first valve 1, and the third inlet / outlet 203 of the interseasonal combined cooling and heating storage device 200 through the fifth valve 5, so as to store the heat.

[0191] The high-temperature flue gas generated by the first power generation unit 20 passes through the absorption ice-making and heating unit 30, the first flue gas-water heat exchanger 50, the second flue gas-water heat exchanger 70, and the flue gas purification device 80 in sequence. After the heat is released in stages, it finally enters the greenhouse 90 for use as gas fertilizer. The second outlet 34 of the absorption ice-making and heating unit 30 produces ice, part of which enters the cold storage 300 through the seventh valve 7 for use, and part of which is used for cold chain sales.

[0192] When the autumn energy storage ends, both the thermal storage device 100 and the interseasonal combined cooling and heating storage device 200 will become high-temperature hot water.

[0193] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application shall have the ordinary meaning as understood by one of ordinary skill in the art to which this application pertains.

[0194] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly defined.

[0195] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A carbon neutral system for comprehensive energy supply of a greenhouse cold storage cold chain, characterized in that, It comprises a first power generation device (20), an absorption ice-making heat supply unit (30), a greenhouse (90), and a cold storage (300); The high-temperature flue gas generated by the first power generation device (20) is input into the absorption ice-making heat supply unit (30) for heat exchange, the absorption ice-making heat supply unit (30) transfers the ice produced to the cold storage (300) or other external environment for use, and the flue gas after being cooled is input into the greenhouse (90) for use as gas fertilizer for plant growth; The first power generation device (20) comprises a fuel inlet (21) and a flue gas outlet (22), and the absorption ice-making heat supply unit (30) comprises a first inlet (31), a first outlet (32), a second inlet (33), a second outlet (34), a third inlet (35), and a third outlet (36); Fuel is input into the first power generation device (20) from the fuel inlet (21), and the high-temperature flue gas generated is discharged from the flue gas outlet (22), which is connected to the third inlet (35) of the absorption ice-making heat supply unit (30); The cold storage (300) comprises a first inlet and outlet (301) and a second inlet and outlet (302), the first inlet and outlet (301) is connected to the second outlet (34) of the absorption ice-making heat supply unit (30), and the second inlet and outlet (302) is connected to the second inlet (33) of the absorption ice-making heat supply unit (30); The greenhouse (90) comprises a heat supply and cooling water inlet (91), a heat supply and cooling water outlet (92), and a gas fertilizer distribution port (93), and the flue gas after being cooled is input into the greenhouse (90) through the gas fertilizer distribution port (93); It further comprises a heat storage device (100), which comprises a first inlet and outlet (101) and a second inlet and outlet (102), the first inlet and outlet (101) is connected to the heat supply and cooling water inlet (91), and the second inlet and outlet (102) is connected to the heat supply and cooling water outlet (92); It further comprises a cross-seasonal cold and heat storage device (200), which comprises a first inlet and outlet (201), a second inlet and outlet (202), a third inlet and outlet (203), and a fourth inlet and outlet (204); The second inlet and outlet (202) of the cross-seasonal cold and heat storage device (200) is respectively connected to the second inlet (33) of the absorption ice-making heat supply unit (30) and the heat supply and cooling water outlet (92), and the first inlet and outlet (201) of the cross-seasonal cold and heat storage device (200) is respectively connected to the second outlet (34) of the absorption ice-making heat supply unit (30) and the heat supply and cooling water inlet (91); The third inlet and outlet (203) of the cross-seasonal cold and heat storage device (200) is connected to the heat supply and cooling water inlet (91), and the fourth inlet and outlet (204) of the cross-seasonal cold and heat storage device (200) is connected to the heat supply and cooling water outlet (92); The first electric heat pump (40) further comprises a first inlet (41), a first outlet (42), a second inlet (43), and a second outlet (44), wherein the first inlet (41) is connected to the heating and cooling water outlet (92), the first outlet (42) is connected to the heating and cooling water inlet (91), the second inlet (43) is connected to the first outlet (32) of the absorption ice-making heating unit (30), and the second outlet (44) is connected to the first inlet (31) of the absorption ice-making heating unit (30); The first flue gas water heat exchanger (50) further comprises a first inlet (51), a first outlet (52), a second inlet (53), and a second outlet (54), wherein the first inlet (51) is connected to the heating and cooling water outlet (92), the first outlet (52) is connected to the heating and cooling water inlet (91), and the second inlet (53) is connected to the third outlet (36) of the absorption ice-making heating unit (30); The second flue gas water heat exchanger (70) further comprises a first inlet (71), a first outlet (72), a second inlet (73), and a second outlet (74), and the second electric heat pump (60) further comprises a first inlet (61), a first outlet (62), a second inlet (63), and a second outlet (64); The first inlet (61) of the second electric heat pump (60) is connected to the heating and cooling water outlet (92), the first outlet (62) of the second electric heat pump (60) is connected to the heating and cooling water inlet (91), the second inlet (63) of the second electric heat pump (60) is connected to the first outlet (72) of the second flue gas water heat exchanger (70), and the second outlet (64) of the second electric heat pump (60) is connected to the first inlet (71) of the second flue gas water heat exchanger (70); The second inlet (73) of the second flue gas water heat exchanger (70) is connected to the second outlet (54) of the first flue gas water heat exchanger (50).

2. The carbon neutral system for comprehensive energy supply of greenhouse cold storage cold chain according to claim 1, characterized in that, The flue gas purification device (80) further comprises a flue gas inlet (81) and a flue gas outlet (82), wherein the flue gas inlet (81) is connected to the second outlet (74) of the second flue gas water heat exchanger (70), and the flue gas outlet (82) is connected to the gas fertilizer distribution port (93); The flue gas purification device (80) is provided with a gas storage tank for storing flue gas, and the amount of gas fertilizer entering the greenhouse (90) is adjusted according to the required time period of the greenhouse (90).

3. The carbon neutral system for comprehensive energy supply of greenhouse cold storage cold chain according to claim 2, characterized in that, The first inlet and outlet (101) of the heat storage device (100) is provided with a first valve (1), and the second inlet and outlet (102) of the heat storage device (100) is provided with a second valve (2); The first inlet and outlet (201) of the cross-season cold and heat storage device (200) is provided with a third valve (3), the second inlet and outlet (202) of the cross-season cold and heat storage device (200) is provided with a fourth valve (4), the third inlet and outlet (203) of the cross-season cold and heat storage device (200) is provided with a fifth valve (5), and the fourth inlet and outlet (204) of the cross-season cold and heat storage device (200) is provided with a sixth valve (6); The first inlet and outlet (301) of the cold storage (300) is provided with a seventh valve (7), and the second inlet and outlet (302) of the cold storage (300) is provided with an eighth valve (8); The first inlet and outlet (201) of the cross-season cold and heat storage device (200) is provided with a ninth valve (9) on the path connecting the second outlet (34) of the absorption ice-making heat supply unit (30), and a thirteenth valve (13) on the path connecting the heat supply and cooling water inlet (91), the second inlet and outlet (202) of the cross-season cold and heat storage device (200) is provided with a tenth valve (10) on the path connecting the second inlet (33) of the absorption ice-making heat supply unit (30), and a fourteenth valve (14) on the path connecting the heat supply and cooling water outlet (92); The heat supply and cooling water inlet (91) is provided with an eleventh valve (11) on the path connecting the first inlet and outlet (101) of the heat storage device (100), the third inlet and outlet (203) of the cross-season cold and heat storage device (200), the first outlet (42) of the first electric heat pump (40), the first outlet (52) of the first flue gas water heat exchanger (50), and the first outlet (62) of the second electric heat pump (60), and the heat supply and cooling water outlet (92) is provided with a twelfth valve (12) on the path connecting the second inlet and outlet (102) of the heat storage device (100), the fourth inlet and outlet (204) of the cross-season cold and heat storage device (200), the first inlet (41) of the first electric heat pump (40), the first inlet (51) of the first flue gas water heat exchanger (50), and the first inlet (61) of the second electric heat pump (60).

4. The carbon neutral system for comprehensive energy supply of greenhouse cold storage cold chain according to claim 2, characterized in that, The second inlet (73) of the second flue gas water heat exchanger (70) is connected with the second outlet (74) of the second flue gas water heat exchanger (70) through a straight-through pipeline, and the first inlet (61) of the second electric heat pump (60) is connected with the first outlet (62) of the second electric heat pump (60) through a straight-through pipeline, so that the flue gas is directly conveyed to the flue gas purification device (80) without passing through the second flue gas water heat exchanger (70); The flue gas inlet (81) of the flue gas purification device (80) is connected with the flue gas outlet (82) of the flue gas purification device (80) through a straight-through pipeline, so that the flue gas is directly conveyed to the greenhouse (90) without passing through the flue gas purification device (80).

5. The carbon neutral system for comprehensive energy supply of greenhouse cold storage cold chain according to claim 2, characterized in that, The first power generation device (20) further comprises a cylinder jacket hot water outlet (23), a cylinder jacket hot water inlet (24), a medium cooling water outlet (25), and a medium cooling water inlet (26), the absorption ice-making heat supply unit (30) further comprises a fourth inlet (37) and a fourth outlet (38), the cylinder jacket hot water outlet (23) is connected to the fourth inlet (37), the cylinder jacket hot water inlet (24) is connected to the fourth outlet (38), and the medium cooling water outlet (25) and the medium cooling water inlet (26) are connected to other heat exchangers.

6. The carbon neutral system for comprehensive energy supply of greenhouse cold storage cold chain according to claim 2, characterized in that, The greenhouse (90) further comprises a first heat exchange device (400) comprising a first inlet (401), a first outlet (402), a second inlet (403), and a second outlet (404). The first inlet (401) of the first heat exchange device (400) is connected to the second outlet (34) of the absorption ice-making heat supply unit (30), and a sixteenth valve (16) is arranged on the connection path, the first outlet (402) of the first heat exchange device (400) is connected to the second inlet (33) of the absorption ice-making heat supply unit (30), and a fifteenth valve (15) is arranged on the connection path, the second inlet (403) of the first heat exchange device (400) is connected to the sewage outlet (94), and the second outlet (404) of the first heat exchange device (400) is connected to a sewage treatment device or a waste gas treatment device.

7. The carbon neutral system for comprehensive energy supply of greenhouse cold store cold chain according to claim 2, characterized in that, The greenhouse (90) further comprises a second heat exchange device (500) arranged on a connection path between the greenhouse (90) and the cross-seasonal cold and heat storage device (200), the second heat exchange device (500) comprising a first inlet (501), a first outlet (502), a second inlet (503), and a second outlet (504), the first inlet (501) of the second heat exchange device (500) is connected to the heat supply and cooling return water outlet (92), the first outlet (502) of the second heat exchange device (500) is connected to the heat supply and cooling water inlet (91), the second inlet (503) of the second heat exchange device (500) is connected to the first inlet and outlet (201) of the cross-seasonal cold and heat storage device (200), and the second outlet (504) of the second heat exchange device (500) is connected to the second inlet and outlet (202) of the cross-seasonal cold and heat storage device (200).

8. The carbon neutral system for comprehensive energy supply of greenhouse cold store cold chain according to claim 2, characterized in that, The greenhouse (90) further comprises a third heat exchange device (600) arranged on a connection path between the greenhouse (90) and the heat storage device (100) and the cross-seasonal cold and heat storage device (200), the third heat exchange device (600) comprising a first inlet (601), a first outlet (602), a second inlet (603), and a second outlet (604), The first inlet (601) of the third heat exchange device (600) is connected with the heating and cooling return water outlet (92), the first outlet (602) of the third heat exchange device (600) is connected with the heating and cooling inlet (91), the second inlet (603) of the third heat exchange device (600) is connected with the first inlet and outlet (101) of the heat storage device (100) and the third inlet and outlet (203) of the cross-season cold and heat storage device (200) respectively, and the second outlet (604) of the third heat exchange device (600) is connected with the second inlet and outlet (102) of the heat storage device (100) and the fourth inlet and outlet (204) of the cross-season cold and heat storage device (200) respectively.

9. The carbon neutral system for comprehensive energy supply of greenhouse cold store cold chain according to claim 2, characterized in that, The greenhouse (90), the heat storage device (100) and the cross-season cold and heat storage device (200) each comprise N small chambers, and N is a natural number greater than or equal to 2. 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.

10. The carbon neutral system for comprehensive energy supply of greenhouse cold store cold chain according to claim 2, characterized in that, The second flue gas water heat exchanger (70) is a partition heat exchanger, a direct contact heat exchanger or a spray tower. The initial state before winter heating is that the cross-season cold and heat storage device (200) and the heat storage device (100) contain high-temperature hot water with a temperature of 90-95 DEG C, and all valves are closed. The winter heating includes:

11. A method of winter heating, characterized by Working condition one: the first valve (1), the second valve (2), the third valve (3), the fourth valve (4), the fifth valve (5), the sixth valve (6), the seventh valve (7), the eighth valve (8), the eleventh valve (11) and the twelfth valve (12) are opened. The cold water output from the greenhouse (90) is input into the first inlet (41) of the first electric heat pump (40), the first inlet (51) of the first flue gas water heat exchanger (50) and the first inlet (61) of the second electric heat pump (60) through the twelfth valve (12) in parallel, the heated hot water flows out from the first outlet (42) of the first electric heat pump (40), the first outlet (52) of the first flue gas water heat exchanger (50) and the first outlet (62) of the second electric heat pump (60) respectively, and is input into the greenhouse (90) through the eleventh valve (11). ​ ​ The cold water output from the greenhouse (90) passes through the twelfth valve (12), the second valve (2), and the sixth valve (6) in parallel into the heat storage device (100) and the cross-season cold-heat storage device (200), and the hot water flows out from the first inlet and outlet (101) of the heat storage device (100) and the third inlet and outlet (203) of the cross-season cold-heat storage device (200) respectively, and is input into the greenhouse (90) through the first valve (1), the fifth valve (5), and the eleventh valve (11); The high-temperature flue gas generated by the first power generation device (20) passes through the absorption ice-making heat supply unit (30), the first flue gas water heat exchanger (50), the second flue gas water heat exchanger (70), and the flue gas purification device (80) in sequence, and finally enters the greenhouse (90) for gas fertilizer use after gradient heat release, the second outlet (34) of the absorption ice-making heat supply unit (30) produces ice, a part of which enters the cold storage (300) through the seventh valve (7) for use, and a part is used for cold chain sales.

12. The method of heating in winter according to claim 11, characterized in that, Further comprising: Working condition two: when the cross-season cold-heat storage device (200) is finished discharging heat, the ninth valve (9) and the tenth valve (10) are opened, and the cross-season cold-heat storage device (200) is used for storing ice, and the stored ice is used for cooling in summer.

13. A spring energy storage method, characterized by The carbon neutral system for comprehensive energy supply of greenhouse cold storage cold chain according to claim 3 is implemented, and the initial state before energy storage in spring is that the system stops heating, the heat storage device (100) contains low-temperature water, and all valves are in the closed state; Spring starts energy storage, including: The first valve (1), the second valve (2), the third valve (3), the fourth valve (4), the seventh valve (7), the eighth valve (8), the ninth valve (9), and the tenth valve (10) are opened; The low-temperature water in the heat storage device (100) flows out from the second inlet and outlet (102), is input into the first inlet (41) of the first electric heat pump (40), the first inlet (51) of the first flue gas water heat exchanger (50), and the first inlet (61) of the second electric heat pump (60) through the second valve (2) in parallel, the hot water heated is discharged from the first outlet (42) of the first electric heat pump (40), the first outlet (52) of the first flue gas water heat exchanger (50), and the first outlet (62) of the second electric heat pump (60) respectively, and is input into the first inlet and outlet (101) of the heat storage device (100) through the first valve (1) to store heat; The high-temperature flue gas generated by the first power generation device (20) passes through the absorption ice-making heat supply unit (30), the first flue gas water heat exchanger (50), the second flue gas water heat exchanger (70), and the flue gas purification device (80) in sequence, and finally enters the greenhouse (90) for gas fertilizer use after gradient heat release, the second outlet (34) of the absorption ice-making heat supply unit (30) produces ice, a part of which enters the cold storage (300) through the seventh valve (7) for use, and a part is used for cold chain sales, a part is input from the first inlet and outlet (201) of the cross-season cold-heat storage device (200) through the ninth valve (9) and the third valve (3) to continue storing ice, and the stored ice is used for cooling in summer.

14. A method of summer air cooling characterized by, The initial state before summer refrigeration of the carbon neutral system for comprehensive energy supply of greenhouse cold storage cold chain according to claim 3 is that the ice slurry or ice water mixture is in the cross-season cold and heat storage device (200) with a temperature of 0 DEG C, the low-temperature water is in the heat storage device (100), and all valves are in a closed state; Summer refrigeration includes: The first valve (1), the second valve (2), the third valve (3), the fourth valve (4), the seventh valve (7), the eighth valve (8), the ninth valve (9), the tenth valve (10), the thirteenth valve (13), and the fourteenth valve (14) are opened; The return water output from the greenhouse (90) enters the second inlet and outlet (202) of the cross-season cold and heat storage device (200) through the fourteenth valve (14) and the fourth valve (4), and the ice slurry or cold water is output from the first inlet and outlet (201) of the cross-season cold and heat storage device (200) to the greenhouse (90) through the third valve (3) and the thirteenth valve (13) for summer cooling of the greenhouse (90); The low-temperature water in the heat storage device (100) flows out from the second inlet and outlet (102), enters the first inlet (41) of the first electric heat pump (40), the first inlet (51) of the first flue gas water heat exchanger (50), and the first inlet (61) of the second electric heat pump (60) in parallel through the second valve (2), and the heated hot water flows out from the first outlet (42) of the first electric heat pump (40), the first outlet (52) of the first flue gas water heat exchanger (50), and the first outlet (62) of the second electric heat pump (60) respectively, and is input into the first inlet and outlet (101) of the heat storage device (100) through the first valve (1) to store heat; The high-temperature flue gas generated by the first power generation device (20) passes through the absorption ice-making heat supply unit (30), the first flue gas water heat exchanger (50), the second flue gas water heat exchanger (70), and the flue gas purification device (80) in sequence, is finally used in the greenhouse (90) for gas fertilizer, and the second outlet (34) of the absorption ice-making heat supply unit (30) produces ice, part of which enters the cold storage (300) through the seventh valve (7) for use, part of which is used for cold chain sales, and part of which is input from the first inlet and outlet (201) of the cross-season cold and heat storage device (200) through the ninth valve (9) and the third valve (3) to continue ice storage. When summer refrigeration ends, the ice in the cross-season cold and heat storage device (200) is all discharged and becomes low-temperature water.

15. A method of autumn energy storage, c h a r a c t e r i s e d in that The initial state before autumn energy storage of the carbon neutral system for comprehensive energy supply of greenhouse cold storage cold chain according to claim 3 is that the system stops refrigeration, the heat storage device (100) and the cross-season cold and heat storage device (200) are all low-temperature water, and all valves are in a closed state; Autumn energy storage includes: The first valve (1), the second valve (2), the third valve (3), the fourth valve (4), the fifth valve (5), the sixth valve (6), the seventh valve (7), and the eighth valve (8) are opened; The low-temperature water in the heat storage device (100) flows out from the second inlet and outlet (102), the low-temperature water in the cross-season cold-heat storage device (200) flows out from the fourth inlet and outlet (204), passes through the second valve (2) and the sixth valve (6) and enters the first inlet (41) of the first electric heat pump (40), the first inlet (51) of the first flue gas water heat exchanger (50) and the first inlet (61) of the second electric heat pump (60) in parallel, the heated hot water flows out from the first outlet (42) of the first electric heat pump (40), the first outlet (52) of the first flue gas water heat exchanger (50) and the first outlet (62) of the second electric heat pump (60) respectively, is input into the first inlet and outlet (101) of the heat storage device (100) through the first valve (1) and is input into the third inlet and outlet (203) of the cross-season cold-heat storage device (200) through the fifth valve (5), so as to store heat; The high-temperature flue gas generated by the first power generation device (20) passes through the absorption ice-making heat supply unit (30), the first flue gas water heat exchanger (50), the second flue gas water heat exchanger (70) and the flue gas purification device (80) in turn, releases heat in stages, and finally enters the greenhouse (90) for gas fertilizer use, the second outlet (34) of the absorption ice-making heat supply unit (30) produces ice, a part of which enters the cold storage (300) for use through the seventh valve (7), and a part of which is used for cold chain sales; When the energy storage in autumn ends, the heat storage device (100) and the cross-season cold-heat storage device (200) all become high-temperature hot water.

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