Carbon dioxide cooling and heating dual-supply park control system

Abstract

The utility model discloses a carbon dioxide cooling and heating dual-supply park control system which comprises a park machine room cooling system, a park heating system, a heat energy power generation system, a carbon dioxide cold storage cavity, a carbon dioxide heat storage cavity, a compressor and a recooler. The carbon dioxide cold storage cavity comprises a first-stage cold storage cavity and a second-stage cold storage cavity, and the carbon dioxide heat storage cavity comprises a first-stage heat storage cavity, a second-stage heat storage cavity and a third-stage heat storage cavity. Heat carried by low-temperature carbon dioxide is recycled after the low-temperature carbon dioxide is used for refrigeration through the park machine room cooling system, the low-temperature carbon dioxide can be used for park water heating or power generation through the park heating system and the heat energy power generation system, the carbon dioxide used for heating can be cooled, and the cooled carbon dioxide is used for refrigeration through the park machine room cooling system; carbon dioxide does not need to be supplemented and released in the whole process, zero emission is achieved, and environmental protection and energy conservation are

Description

Technical Field

[0001] The utility model belongs to the technical field of energy storage, and in particular relates to a carbon dioxide cooling and heating dual-supply park control system. Background Art

[0002] With the development of science and technology and population growth, the demand for energy will also increase, which means more fossil fuels will be consumed and more greenhouse gases will be released. Traditional cooling methods in industrial parks are usually one-way cooling, using water or air cooling to reduce the temperature. The heat removed by the medium is discarded and not reused, resulting in a waste of resources. Traditional cooling methods usually use Freon refrigerants as the working medium. During operation, these refrigerants produce hydrofluorocarbons such as Freon, which seriously damage the ozone layer.

[0003] Therefore, it is necessary to propose an energy-saving and environmentally friendly carbon dioxide cooling and heating dual supply park control system to solve the above problems. Utility Model Content

[0004] The technical problem to be solved by the present invention is to address the deficiencies in the above-mentioned prior art and provide a carbon dioxide dual-supply cooling and heating park control system. The system sets a carbon dioxide cold storage cavity and a carbon dioxide hot storage cavity, and respectively uses a compressor and a recooler to pressurize and cool the carbon dioxide, so that the low-temperature carbon dioxide can be used for cooling by the park computer room cooling system and the heat carried by it can be reused. The heat carried by the low-temperature carbon dioxide can be used for park water heating or power generation through the park heating system and the thermal power generation system. The carbon dioxide used for heating will be cooled, and after cooling treatment, it will be used for cooling by the park computer room cooling system. The whole process does not require the replenishment and release of carbon dioxide, achieving zero emissions, environmental protection and energy saving.

[0005] To solve the above technical problems, the present invention adopts a technical solution: a carbon dioxide cooling and heating dual-supply park control system, characterized by comprising a park computer room cooling system, a park heating system, a thermal power generation system, and a carbon dioxide cooling and heating dual-supply system, wherein the carbon dioxide cooling and heating dual-supply system comprises a carbon dioxide cold storage cavity, a carbon dioxide heat storage cavity, a compressor, and a recooler, wherein both the carbon dioxide cold storage cavity and the carbon dioxide heat storage cavity are underground cavities;

[0006] The carbon dioxide cold storage chamber comprises a first-stage cold storage chamber and a second-stage cold storage chamber for storing low-temperature carbon dioxide at different temperatures, and the subcooler is connected between the first-stage cold storage chamber and the second-stage cold storage chamber;

[0007] The carbon dioxide heat storage chamber includes a first-stage heat storage chamber, a second-stage heat storage chamber, and a third-stage heat storage chamber for storing high-temperature carbon dioxide at different temperatures, and a compressor is connected between the first-stage heat storage chamber and the second-stage heat storage chamber, and between the second-stage heat storage chamber and the third-stage heat storage chamber;

[0008] The working fluid outlet of the thermal energy power generation system and the working fluid outlet of the park heating system are both connected to the inlet of the first-stage cold storage cavity through a pressure pipe. A power device is connected between the working fluid inlet of the park heating system and the outlet of the second-stage heat storage cavity, between the working fluid inlet of the thermal energy power generation system and the outlet of the third-stage heat storage cavity, and between the working fluid inlet of the park computer room cooling system and the outlet of the second-stage cold storage cavity through a pressure pipe. The inlet of the first-stage heat storage cavity is connected to the working fluid outlet of the park computer room cooling system through a pressure pipe.

[0009] The above-mentioned carbon dioxide dual-supply cooling and heating park control system is characterized in that the power device is an air pump.

[0010] The above-mentioned carbon dioxide dual-supply cooling and heating park control system is characterized in that the temperature and air pressure of the carbon dioxide stored in the first-stage heat storage cavity are both lower than the temperature and air pressure of the carbon dioxide stored in the second-stage heat storage cavity, and the temperature and air pressure of the carbon dioxide stored in the second-stage heat storage cavity are both lower than the temperature and air pressure of the carbon dioxide stored in the third-stage heat storage cavity.

[0011] The above-mentioned carbon dioxide cooling and heating dual-supply park control system is characterized in that: the temperature of the carbon dioxide stored in the first-stage heat storage cavity is 30°C to 80°C, and the pressure of the carbon dioxide stored in the first-stage heat storage cavity is 800kPa to 1000kPa;

[0012] The temperature of the carbon dioxide stored in the second-stage heat storage cavity is 70°C to 100°C, and the pressure of the carbon dioxide stored in the second-stage heat storage cavity is 1000kPa to 2000kPa;

[0013] The temperature of the carbon dioxide stored in the third-stage heat storage cavity is 200° C. to 400° C., and the pressure of the carbon dioxide stored in the third-stage heat storage cavity is 2000 kPa to 10000 kPa.

[0014] The above-mentioned carbon dioxide cooling and heating dual supply park control system is characterized in that the temperature of the carbon dioxide stored in the first-stage cold storage cavity is higher than the temperature of the carbon dioxide stored in the second-stage cold storage cavity.

[0015] The above-mentioned carbon dioxide cooling and heating dual-supply park control system is characterized in that: the temperature of the carbon dioxide stored in the first-stage cold storage cavity is 10°C to 50°C, and the pressure of the carbon dioxide stored in the first-stage cold storage cavity is 200kPa to 800kPa;

[0016] The temperature of the carbon dioxide stored in the second-stage cold storage chamber is -50°C to -30°C.

[0017] The above-mentioned carbon dioxide dual-supply cooling and heating park control system is characterized in that a safety solenoid valve for controlling the carbon dioxide flow is provided on the pressure pipeline.

[0018] The above-mentioned carbon dioxide cooling and heating dual-supply park control system is characterized in that the first-level cold storage cavity, the second-level cold storage cavity, the first-level hot storage cavity, the second-level hot storage cavity and the third-level hot storage cavity are all ellipsoidal cavity structures and are all located 5m to 10m underground.

[0019] Compared with the prior art, the present invention has the following advantages:

[0020] The utility model sets a carbon dioxide cold storage cavity and a carbon dioxide hot storage cavity, and respectively uses a compressor and a recooler to pressurize and cool the carbon dioxide, so that the low-temperature carbon dioxide can be used for refrigeration through the park computer room cooling system and the heat carried by it can be reused. It can be used for park water heating or power generation through the park heating system and thermal power generation system. The carbon dioxide used for heating will be cooled, and after cooling treatment, it will be used for refrigeration through the park computer room cooling system. The whole process does not require the replenishment and release of carbon dioxide, achieving zero emissions, environmental protection and energy saving.

[0021] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural diagram of the present utility model.

[0023] Description of the accompanying drawings:

[0024] 1- Park computer room cooling system; 2- Park heating system; 3- Thermal power generation system; 4- Carbon dioxide hot and cold dual supply system; 5- Power unit; 6- Pressure pipeline; 7- First-stage cold storage cavity; 8- Second-stage cold storage cavity; 9- Subcooler; 10- First-stage hot storage cavity; 11- Compressor; 12- Second-stage hot storage cavity; 13- Third-stage hot storage cavity; 14- Safety solenoid valve. DETAILED DESCRIPTION

[0025] like Figure 1As shown, the utility model includes a park computer room cooling system 1, a park heating system 2, a thermal power generation system 3 and a carbon dioxide cooling and heating dual supply system 4. The carbon dioxide cooling and heating dual supply system 4 includes a carbon dioxide cold storage cavity, a carbon dioxide heat storage cavity, a compressor 11 and a recooler 9. The carbon dioxide cold storage cavity and the carbon dioxide heat storage cavity are both underground cavities.

[0026] The carbon dioxide cold storage chamber includes a first-stage cold storage chamber 7 and a second-stage cold storage chamber 8 for storing low-temperature carbon dioxide at different temperatures, and the subcooler 9 is connected between the first-stage cold storage chamber 7 and the second-stage cold storage chamber 8;

[0027] The carbon dioxide heat storage chamber includes a first-stage heat storage chamber 10, a second-stage heat storage chamber 12, and a third-stage heat storage chamber 13 for storing high-temperature carbon dioxide at different temperatures. A compressor 11 is connected between the first-stage heat storage chamber 10 and the second-stage heat storage chamber 12, as well as between the second-stage heat storage chamber 12 and the third-stage heat storage chamber 13.

[0028] The working fluid outlet of the thermal energy power generation system 3 and the working fluid outlet of the park heating system 2 are both connected to the inlet of the first-stage cold storage cavity 7 through a pressure pipe 6. The working fluid inlet of the park heating system 2 and the outlet of the second-stage heat storage cavity 12, the working fluid inlet of the thermal energy power generation system 3 and the outlet of the third-stage heat storage cavity 13, and the working fluid inlet of the park computer room cooling system 1 and the outlet of the second-stage cold storage cavity 8 are all connected to a power device 5 through a pressure pipe 6. The inlet of the first-stage heat storage cavity 10 is connected to the working fluid outlet of the park computer room cooling system 1 through a pressure pipe 6.

[0029] In actual use, a carbon dioxide cold storage cavity and a carbon dioxide hot storage cavity are set up, and the compressor 11 and the subcooler 9 are used to pressurize and cool the carbon dioxide respectively, so that the low-temperature carbon dioxide can be used for cooling through the park computer room cooling system 1 and the heat carried can be reused. It can be used for park water heating or power generation through the park heating system 2 and the thermal power generation system 3. The carbon dioxide after heating will be cooled, and after cooling treatment, it will be used for cooling through the park computer room cooling system 1; the whole process does not require the replenishment and release of carbon dioxide, achieving zero emissions, environmental protection and energy saving.

[0030] It should be noted that by making both the carbon dioxide cold storage cavity and the carbon dioxide hot storage cavity underground cavities, the energy exchange with the outside world can be effectively reduced.

[0031] In a specific implementation, the compressor 11 is used to pressurize and heat the carbon dioxide, and the subcooler 9 is used to cool the carbon dioxide.

[0032] In this embodiment, the power device 5 is an air pump.

[0033] In actual use, assuming that the system starts operating from the output of the second-level cold storage cavity 8, due to the presence of the air pump, the low-temperature carbon dioxide gas will continuously output cold air to the campus computer room cooling system 1, and the flow can be controlled by the safety solenoid valve 14, which can indirectly control the temperature of the computer room.

[0034] It should be noted that low-temperature carbon dioxide is directly led into the machine room, which is a completely enclosed space immersed in high-purity carbon dioxide, allowing for efficient heat exchange. Temperature sensors are installed at multiple locations in the machine room, and a controller is added. The controller is directly connected to the safety solenoid valve 14 and the temperature sensor to control the indoor temperature in real time.

[0035] In addition, after being used to cool the machine room, the low-temperature carbon dioxide will take away heat, increasing its own energy, and then be transmitted to the first-stage heat storage cavity 10 through the pressure pipeline, and the flow rate can also be controlled by the safety solenoid valve 14.

[0036] In this embodiment, the temperature and gas pressure of the carbon dioxide stored in the first-stage heat storage cavity 10 are lower than the temperature and gas pressure of the carbon dioxide stored in the second-stage heat storage cavity 12, and the temperature and gas pressure of the carbon dioxide stored in the second-stage heat storage cavity 12 are lower than the temperature and gas pressure of the carbon dioxide stored in the third-stage heat storage cavity 13.

[0037] In actual use, the temperature and pressure of carbon dioxide in the first-stage heat storage cavity 10 , the second-stage heat storage cavity 12 , and the third-stage heat storage cavity 13 show a step-like upward trend.

[0038] In this embodiment, the temperature of the carbon dioxide stored in the first-stage heat storage cavity 10 is 30°C to 80°C, and the pressure of the carbon dioxide stored in the first-stage heat storage cavity 10 is 800kPa to 1000kPa;

[0039] The temperature of the carbon dioxide stored in the second-stage heat storage cavity 12 is 70°C to 100°C, and the pressure of the carbon dioxide stored in the second-stage heat storage cavity 12 is 1000kPa to 2000kPa;

[0040] The temperature of the carbon dioxide stored in the third-stage heat storage cavity 13 is 200° C. to 400° C., and the pressure of the carbon dioxide stored in the third-stage heat storage cavity 13 is 2000 kPa to 10000 kPa.

[0041] In actual use, for the sake of heating performance, it is necessary to re-pressurize the gas pressure in the first-stage heat storage chamber 10 to achieve better heating efficiency; the carbon dioxide in the first-stage heat storage chamber 10 is pressurized by the compressor 11 and then transferred to the second-stage heat storage chamber 12;

[0042] Furthermore, the carbon dioxide in the second-stage heat storage chamber 12 can be used to heat domestic water in the park, or it can be re-pressurized to obtain higher temperature and high pressure carbon dioxide, which is transmitted to the third-stage heat storage chamber 13 and used for various thermal energy power generation.

[0043] In specific implementation, the compressor 11 adopts a Siemens MK165 air compressor, which can efficiently control the pressure in the next stage cavity.

[0044] It should be noted that if the carbon dioxide in the second-stage heat storage cavity 12 is used to heat domestic water, the gas is directly passed to the park heating system 2, so that the high-temperature carbon dioxide gas can indirectly contact and transfer heat with the domestic water in the park heating system 2, and the gas flow rate is controlled at a lower level to allow the high-temperature carbon dioxide to fully release heat. The carbon dioxide gas that has completed heat release is now at a lower temperature and is directly transmitted to the first-stage cold storage cavity 7.

[0045] In specific implementation, the thermal energy power generation system 3 is a steam power generation system, and the carbon dioxide in the third-stage heat storage cavity 13 is used for steam power generation. The high-temperature and high-pressure carbon dioxide gas in the third-stage heat storage cavity 13 is output to the input end of the steam power generation system. After passing through the steam power generation system, the carbon dioxide releases heat and cools, and is then transported to the first-stage cold storage cavity 7.

[0046] It should be noted that the temperature and pressure of the carbon dioxide output from the thermal power generation system 3 are higher than the temperature and pressure of the carbon dioxide output from the park heating system 2. Therefore, it is necessary to combine the rational use of the air pump and the safety solenoid valve 14 to prevent the carbon dioxide in the first-stage cold storage cavity 7 from flowing back to the medium outlet of the park heating system 2.

[0047] In this embodiment, the temperature of the carbon dioxide stored in the first-stage cold storage cavity 7 is higher than the temperature of the carbon dioxide stored in the second-stage cold storage cavity 8 .

[0048] In actual use, the temperature of the carbon dioxide in the first-stage cold storage cavity 7 is not high enough to be directly used for cooling the campus computer room cooling system 1. The carbon dioxide temperature needs to be lowered by the subcooler 9 before it can be used for cooling. The carbon dioxide passing through the subcooler 9 is stored in the second-stage cold storage cavity 8.

[0049] In this embodiment, the temperature of the carbon dioxide stored in the first-stage cold storage cavity 7 is 10° C. to 50° C., and the pressure of the carbon dioxide stored in the first-stage cold storage cavity 7 is 200 kPa to 800 kPa;

[0050] The temperature of the carbon dioxide stored in the second-stage cold storage cavity 8 is -50°C to -30°C.

[0051] In this embodiment, a safety solenoid valve 14 for controlling the flow of carbon dioxide is provided on the pressure pipe 6 .

[0052] In this embodiment, the first-stage cold storage cavity 7, the second-stage cold storage cavity 8, the first-stage hot storage cavity 10, the second-stage hot storage cavity 12 and the third-stage hot storage cavity 13 are all ellipsoidal cavity structures and are all located 5m to 10m underground.

[0053] In actual use, the carbon dioxide content in the entire system is usually constant. When the demand for cooling and heating in the park increases, the carbon dioxide medium will be appropriately filled. The entire process is zero carbon dioxide emission.

[0054] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any way. Any simple modification, change and equivalent structural change made to the above embodiment based on the technical essence of the present invention shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A carbon dioxide cooling and heating dual supply park control system, characterized by: The system comprises a park computer room cooling system (1), a park heating system (2), a thermal power generation system (3) and a carbon dioxide cold and hot dual supply system (4), wherein the carbon dioxide cold and hot dual supply system (4) comprises a carbon dioxide cold storage cavity, a carbon dioxide hot storage cavity, a compressor (11) and a recooler (9), and the carbon dioxide cold storage cavity and the carbon dioxide hot storage cavity are both underground cavities; The carbon dioxide cold storage chamber comprises a first-stage cold storage chamber (7) and a second-stage cold storage chamber (8) for storing low-temperature carbon dioxide at different temperatures, and the subcooler (9) is connected between the first-stage cold storage chamber (7) and the second-stage cold storage chamber (8); The carbon dioxide heat storage chamber comprises a first-stage heat storage chamber (10), a second-stage heat storage chamber (12), and a third-stage heat storage chamber (13) for storing high-temperature carbon dioxide at different temperatures, wherein a compressor (11) is connected between the first-stage heat storage chamber (10) and the second-stage heat storage chamber (12), and between the second-stage heat storage chamber (12) and the third-stage heat storage chamber (13); The working fluid outlet of the thermal power generation system (3) and the working fluid outlet of the park heating system (2) are both connected to the inlet of the first-stage cold storage cavity (7) via a pressure pipe (6); the working fluid inlet of the park heating system (2) and the outlet of the second-stage heat storage cavity (12), the working fluid inlet of the thermal power generation system (3) and the outlet of the third-stage heat storage cavity (13), and the working fluid inlet of the park machine room cooling system (1) and the outlet of the second-stage cold storage cavity (8) are all connected to a power device (5) via a pressure pipe (6); and the inlet of the first-stage heat storage cavity (10) is connected to the working fluid outlet of the park machine room cooling system (1) via a pressure pipe (6).

2. A carbon dioxide cooling and heating dual supply park control system according to claim 1, characterized in that: The power device (5) is an air pump.

3. A carbon dioxide cooling and heating dual supply park control system according to claim 1, characterized in that: The temperature and gas pressure of the carbon dioxide stored in the first-stage heat storage cavity (10) are both lower than the temperature and gas pressure of the carbon dioxide stored in the second-stage heat storage cavity (12), and the temperature and gas pressure of the carbon dioxide stored in the second-stage heat storage cavity (12) are both lower than the temperature and gas pressure of the carbon dioxide stored in the third-stage heat storage cavity (13).

4. A carbon dioxide cooling and heating dual supply park control system according to claim 3, characterized in that: The temperature of the carbon dioxide stored in the first-stage heat storage cavity (10) is 30°C to 80°C, and the gas pressure of the carbon dioxide stored in the first-stage heat storage cavity (10) is 800kPa to 1000kPa; The temperature of the carbon dioxide stored in the second-stage heat storage cavity (12) is 70° C. to 100° C., and the gas pressure of the carbon dioxide stored in the second-stage heat storage cavity (12) is 1000 kPa to 2000 kPa; The temperature of the carbon dioxide stored in the third-stage heat storage cavity (13) is 200° C. to 400° C., and the gas pressure of the carbon dioxide stored in the third-stage heat storage cavity (13) is 2000 kPa to 10000 kPa.

5. A carbon dioxide cooling and heating dual supply park control system according to claim 1, characterized in that: The temperature of the carbon dioxide stored in the first-stage cold storage cavity (7) is higher than the temperature of the carbon dioxide stored in the second-stage cold storage cavity (8).

6. A carbon dioxide cooling and heating dual supply park control system according to claim 5, characterized in that: The temperature of the carbon dioxide stored in the first-stage cold storage cavity (7) is 10° C. to 50° C., and the pressure of the carbon dioxide stored in the first-stage cold storage cavity (7) is 200 kPa to 800 kPa; The temperature of the carbon dioxide stored in the second-stage cold storage cavity (8) is -50°C to -30°C.

7. A carbon dioxide cooling and heating dual supply park control system according to claim 1, characterized in that: The pressure pipe (6) is provided with a safety electromagnetic valve (14) for controlling the flow of carbon dioxide.

8. The carbon dioxide cooling and heating dual supply park control system according to claim 1, characterized in that: The first-stage cold storage cavity (7), the second-stage cold storage cavity (8), the first-stage hot storage cavity (10), the second-stage hot storage cavity (12) and the third-stage hot storage cavity (13) are all ellipsoidal cavity structures and are all located 5m to 10m underground.

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