CN114484936B - Energy storage operation control system based on ultra-high temperature heat pump - Google Patents
Energy storage operation control system based on ultra-high temperature heat pump Download PDFInfo
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- CN114484936B CN114484936B CN202210002374.1A CN202210002374A CN114484936B CN 114484936 B CN114484936 B CN 114484936B CN 202210002374 A CN202210002374 A CN 202210002374A CN 114484936 B CN114484936 B CN 114484936B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B30/00—Heat pumps
- F25B30/02—Heat pumps of the compression type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/40—Fluid line arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/24—Storage receiver heat
Abstract
The invention relates to the technical field of thermal energy power, and particularly provides an energy storage operation control system based on an ultra-high temperature heat pump, which comprises an ultra-high temperature compressor, a molten salt heater, an expander, a motor, a heat regenerator, a heat absorber, a low temperature molten salt tank, a high temperature molten salt tank, a hot water storage tank, a cold water storage tank, a volume controller, a volume control tank, a discharge valve, a pressure reducing valve I, a stop valve I, a pressure reducing valve II, a stop valve II, a storage cooler, a circulating pump and an electric heater. Based on the energy storage operation requirement of the high-temperature heat pump, an overall system structure, overall control logic and a functional control sequence are provided. The invention is beneficial to realizing the high-efficiency automatic operation control of the ultra-temperature heat pump energy storage system, improving the energy storage conversion rate and further improving the market competitiveness of the energy storage scheme.
Description
Technical Field
The invention relates to the technical field of thermal energy power, in particular to an energy storage operation control system based on an ultra-high temperature heat pump.
Background
The term "energy storage" means that off-peak electric power is utilized as much as possible according to the energy storage (cold/hot) characteristics of water, ice and other substances, and the refrigeration/heat equipment is operated under full load conditions, whereby the energy required for peak regulation is stored in the form of sensible heat or latent heat, partially or entirely in the water, ice or other substances. Peak power peak load is generated, and the cold (heat) quantity stored by the energy storage substances is taken out through a heat exchanger, a heat transfer working medium, a power pump and other equipment so as to meet the peak load regulation requirement.
The energy storage comprises cold storage and heat storage, and the existing energy storage system can be divided into an ice energy storage system, a water energy storage system and a eutectic salt energy storage system according to energy storage media. Compared with other cold accumulation systems, the water energy accumulation system with the same energy accumulation amount has the advantages of relatively low system cost and high night energy accumulation efficiency. Taking a water energy storage system as an example, most water energy storage systems adopt energy storage equipment for energy storage, and the whole energy storage and energy release processes are completed in the energy storage equipment.
The proportion of clean energy such as solar energy, wind power and the like is gradually increased. On one hand, the energy source has intermittent power generation characteristics, is influenced by meteorological environment, and causes the power generation capacity of a supply end to have certain randomness; on the other hand, the power demand end depends on the activities of people in production and living. Therefore, the improvement of the power generation proportion of the new energy source can lead to the further increase of the matching difficulty of the power supply and the demand end, and brings greater challenges to the operation safety and stability of the power grid. The ultra-temperature heat pump energy storage power generation system is a mode of converting redundant electric energy into heat energy for storage by using an ultra-temperature heat pump mode, and has the advantages of high conversion efficiency, good economy, large-scale popularization and utilization and the like. In order to realize the application of the ultra-temperature heat pump energy storage power generation system, a comprehensive control system matched with the intermittent power supply needs to be developed.
Disclosure of Invention
In order to achieve the aim, the invention provides an ultra-high temperature heat pump-based energy storage operation control system, which comprises an ultra-high temperature compressor, a molten salt heater, an expander, a motor, a heat regenerator, a heat absorber, a low temperature molten salt tank, a high temperature molten salt tank, a hot water storage tank, a cold water storage tank, a volume controller, a volume control tank, a discharge valve, a pressure reducing valve I, a stop valve I, a pressure reducing valve II, a stop valve II, a storage cooler, a circulating pump and an electric heater.
According to the ultra-high temperature heat pump-based energy storage operation control system, overall control of the system comprises a power control unit, an instruction processing unit and an actual control subunit, wherein the actual control subunit comprises a compressor inlet pressure control unit, an expander inlet pressure control unit and a volume tank temperature control unit.
According to the ultra-high temperature heat pump-based energy storage operation control system, the design pressure of the volume control tank is the same as the outlet pressure of the ultra-high temperature compressor, and the operation pressure is between the outlet pressure and the inlet pressure of the ultra-high temperature compressor, so that the automatic injection and discharge of working media are realized by utilizing the loop pressure difference; the design temperature of the device is the inlet temperature of the ultra-high temperature compressor, and the operation temperature is between the inlet temperature of the ultra-high temperature compressor and the inlet temperature of the turbine, so that the change of the storage capacity of the working medium is realized by utilizing the temperature change.
According to the ultrahigh-temperature heat pump-based energy storage operation control system, the electric heater is arranged on the recharging pipeline, and the working medium entering the inlet of the compressor is heated, so that the working medium energy is increased, and the system boosting rate can be conveniently and rapidly improved in a short time.
According to the ultrahigh temperature heat pump-based energy storage operation control system, a storage cooler is arranged on a working medium discharging pipeline, a cooling water side is connected with a cooling water pipeline, the upstream of the cooling water pipeline is connected to a cold water storage tank, the downstream of the cooling water pipeline is connected to a hot water storage tank, and a circulating pump is arranged on the cooling water pipeline and pumps cooling water of the cold water storage tank to the storage cooler.
According to the ultrahigh-temperature heat pump energy storage operation control system, the valves of the pressure reducing valve II and the stop valve II are opened, so that the valves of the pressure reducing valve I and the stop valve I are kept normally closed, working media of the volume control tank flow into a compressor inlet after passing through the heater, the inlet pressure of the compressor and the inlet pressure of the turbine are increased, and the energy storage power of the high-temperature heat pump is increased.
According to the ultrahigh-temperature heat pump energy storage operation control system, the valves of the pressure reducing valve I and the stop valve I are opened, the valves of the pressure reducing valve II and the stop valve II are kept normally closed, the valves on the injection pipeline are kept normally closed, working media in the system enter the volume control tank after passing through the cooler, the inlet pressure of the compressor and the inlet pressure of the turbine are reduced, and the reduction of the energy storage power of the high-temperature heat pump is realized.
The beneficial technical effects of the invention are as follows:
the invention aims to provide an ultra-temperature heat pump-based energy storage operation control system, which improves the heat storage control capacity of the system, saves energy and realizes the intellectualization of the system by matching an ultra-temperature heat source energy storage power generation system with an intermittent power supply system. The intermittent power supply is suitable for the power grid capacity and level, and the controlled stability output of the electric energy is realized.
Drawings
Fig. 1 is an overall layout diagram of an ultra-high temperature heat pump based energy storage operation control system of the present invention.
Fig. 2 is a general control logic diagram of the ultra-high temperature heat pump energy storage operation control system of the present invention.
Fig. 3 is a functional control sequence diagram of the ultra-high temperature heat pump energy storage operation control system-heat energy input increasing control logic.
Fig. 4 is a functional control sequence diagram of the ultra-high temperature heat pump energy storage operation control system-thermal energy input reduction control logic.
In the figure, a superhigh temperature compressor 1, a fused salt heater 2, an expansion machine 3, a motor 4, a heat regenerator 5, a heat absorber 6, a low-temperature fused salt tank 7, a high-temperature fused salt tank 8, a hot water storage tank 9, a cold water storage tank 10, a volume controller 11, a volume control tank 12, a discharge valve 13, a discharge valve 14, a pressure reducing valve I, a stop valve I15, a stop valve 16, a pressure reducing valve II, a stop valve II 17, a storage cooler 18, a circulating pump 19 and an electric heater 20.
Detailed Description
For the purpose of making apparent the objects, technical solutions and advantages of the present invention, the present invention will be further described in detail with reference to the accompanying drawings and examples, it being understood that the specific examples described herein are for illustration only and are not intended to limit the present invention.
As shown in fig. 1, the ultra-high temperature heat pump-based energy storage operation control system mainly comprises an ultra-high temperature compressor 1, a molten salt heater 2, an expander 3, a motor 4, a regenerator 5, a heat absorber 6, a low temperature molten salt tank 7, a high temperature molten salt tank 8, a hot water storage tank 9, a cold water storage tank 10, a volume controller 11, a volume control tank 12, a discharge valve 13, a pressure reducing valve I14, a stop valve I15, a pressure reducing valve II 16, a stop valve II 17, a storage cooler 18, a circulating pump 19 and an electric heater 20.
The ultra-high temperature heat pump energy storage power generation main system comprises an ultra-high temperature compressor 1, a molten salt heater 2, an expander 3, a motor 4, a heat regenerator 5, a heat absorber 6, a low temperature molten salt tank 7, a high temperature molten salt tank 8, a hot water storage tank 9 and a cold water storage tank 10. The volume controller 11, the volume control tank 12, the dump valve 13, the pressure reducing valve I14, the stop valve I15, the pressure reducing valve II 16, the stop valve II 17, the storage cooler 18, the circulating pump 19 and the electric heater 20 are high-efficiency operation control systems.
The volume controller 11 is a logic control unit for realizing the function of the control system, and is used for receiving an operator instruction, detecting the current signal of the high-temperature heat pump system, and sending out an instruction to make the executor execute a specific action. The volume control tank 12 is a pressure container with a certain volume, and the working medium in the control tank and the working medium in the system are the same working medium; the design pressure is the same as the outlet pressure of the ultra-high temperature compressor 1, and the operating pressure is between the outlet pressure and the inlet pressure of the ultra-high temperature compressor 1, so that the loop pressure difference is utilized to realize the automatic injection and discharge of working media. The design temperature of the device is the inlet temperature of the ultra-high temperature compressor 1, and the operation temperature is between the inlet temperature of the ultra-high temperature compressor and the inlet temperature of the turbine, so that the change of the storage capacity of the working medium is realized by utilizing the temperature change.
The discharge valve 13 is a working medium discharge valve of the volume control tank 12, and when the pressure of the volume control tank 12 exceeds the safety value, the discharge valve 13 is automatically opened to maintain the pressure of the volume control tank 12 at the safety level. The pressure reducing valve I14 and the stop valve I15 are positioned in a working medium discharging pipeline together, and the upstream of the working medium discharging pipeline is connected to the inlet of the expander 3, and the downstream of the working medium discharging pipeline is connected to the volume control tank 12. The pressure reducing valve I14 and the stop valve I15 are in a normally closed state in normal operation, and when an opening instruction is received, the two valves are opened, so that working medium in the system is discharged to the volume control tank 12 under the drive of pressure difference. The pressure reducing valve II 16 and the stop valve II 17 are positioned in a recharging line which is connected to the volume control tank 12 at the upstream and connected to the inlet of the ultra-high temperature compressor 1 at the downstream.
The storage cooler 18 is located on the discharge line and is used for cooling the working medium flowing into the volume control tank 12 from the main system, reducing the temperature of the working medium and improving the density of the working medium, so that the working medium which can be stored in a certain volume in the volume control tank 12 is increased, and the storage capacity of the working medium of the storage tank is further increased. The cooling water side of the storage cooler 18 is connected to a cooling water line which is connected upstream to the cold water tank 10 and downstream to the hot water tank 9. The cooling water line is provided with a circulation pump 19 for pumping the cooling water from the cold water tank 10 to a storage cooler 18. An electric heater 20 is provided in the recharge line for heating the working fluid entering the main system from the volume control tank 12 to raise its temperature to a level consistent with the main system. By heating the working medium entering the inlet of the compressor, the energy of the working medium is increased, and the system boosting rate is conveniently and rapidly improved in a short time.
Preferably, the heat pump system may generate high temperatures of 290-900 ℃, more preferably 500-900 ℃.
Preferably, the motor is a 10-500MW high-power motor.
The invention provides an energy storage operation control system based on an ultra-high temperature heat pump, which improves the heat storage control capacity of the system, saves energy and realizes the intellectualization of the system by matching an ultra-high temperature heat source energy storage power generation system with an intermittent power supply system. The intermittent power supply is suitable for the power grid capacity and level, and the controlled stability output of the electric energy is realized.
The comprehensive energy system is also provided with a gas storage tank A and a gas storage tank B;
the gas storage tank A and the gas storage tank B are arranged on a gas pipeline between the compressor 1 and the heat regenerator 5, wherein the gas storage tank A and the gas storage tank B are respectively loaded with a gas component A and a gas component B;
the gas component A is any one of neon, argon and xenon;
the gas component B is any one of air, carbon dioxide, nitrogen and helium;
the gas component A has the characteristics of easy temperature rise and compression and weaker heat transfer, and the gas component B has the characteristics of difficult temperature rise and compression and stronger heat transfer. Taking the inlet temperature of the ultra-high temperature compressor at 300 ℃ and the inlet pressure at 2MPa as an example, and the target outlet temperature of the ultra-high temperature compressor at 600 ℃, wherein argon is selected as the gas component A, the isentropic compression specific enthalpy of the ultra-high temperature compressor is increased to 157.6kJ/kg, the constant pressure specific heat is 0.52kJ/kg/K, and carbon dioxide is selected as the gas component B, the isentropic compression specific enthalpy of the ultra-high temperature compressor is increased to 329.3kJ/kg, and the constant pressure specific heat is 1.16kJ/kg/K.
According to the outlet temperature requirements of different ultra-high temperature compressors, the easily-compressed and easily-warmed performance of the gas component A and the high heat transfer performance of the gas component B are cooperatively utilized, so that the gas warming performance and the heat transfer capability of the ultra-high temperature heat pump system are comprehensively improved, and the compression power consumption of the compressor and the volume of a heat exchanger are reduced. In the high temperature mode, namely, the outlet temperature T of the ultra-high temperature compressor is in the range of 500-800 ℃, more gas component A is injected into the gas side circulation system through the gas storage tank A, so that the relation between the volume percentage X of the gas component A in the gas circulation and the outlet temperature T of the ultra-high temperature compressor satisfies X= (T-320)/6. In the medium temperature mode, namely, the outlet temperature T of the ultra-high temperature compressor is 300-500 ℃, more gas component B is injected into the gas side circulation system through the gas storage tank B, so that the relation between the volume percentage X of the gas component A in the gas circulation and the outlet temperature T of the ultra-high temperature compressor satisfies X=T/10-20.
Preferably, when the temperature is below 300 degrees celsius, all is gas B.
Preferably, when the temperature is higher than 800 degrees celsius, all is gas a.
Through the arrangement, the gas temperature rising performance and the heat transfer capability of the ultra-high temperature heat pump system are comprehensively improved, the compression power consumption of the compressor and the volume of the heat exchanger are reduced, medium temperature steam and cold water are generated while the energy storage of high temperature molten salt is realized, and the full utilization of energy storage peak shaving and low quality energy is realized.
Referring to fig. 2, the overall control logic of the present invention includes a power control unit, an instruction processing unit, and an action execution. The power control unit reads the energy storage demand value, the current heat source input value and the energy storage current value. And judging whether to increase the energy storage power or decrease the energy storage power according to the difference value between the energy storage demand value and the current energy storage value and the current heat source input value.
The power control unit transmits the generated control scheme to the instruction processing unit, and the instruction processing unit further performs specific operation of generating and sends the specific operation to the control unit of the next level, wherein the control unit comprises a compressor inlet pressure control unit, an expander inlet pressure control unit and a volume tank temperature control unit. The compressor inlet pressure control unit realizes pressure control based on the volume control tank, when the compressor inlet pressure needs to be increased, the valves of the pressure reducing valve II 16 and the stop valve II 17 are opened, the valves of the pressure reducing valve I14 and the stop valve I15 are kept normally closed, working medium of the volume control tank 12 flows into the compressor inlet after passing through the heater, the compressor inlet pressure is increased, and the system reaches a stable value, and the action sequence is shown in fig. 3.
When the inlet pressure of the compressor needs to be reduced, the valves of the pressure reducing valve I14 and the stop valve I15 are opened, the valves of the pressure reducing valve II 16 and the stop valve II 17 are kept normally closed, and working medium in the system flows into the volume control tank 12 after passing through the cooler, so that the inlet pressure of the compressor is reduced. The turbine inlet pressure control unit implements pressure control based on a volume control tank, the control logic of which is similar to the compressor inlet pressure control, the control sequence of which is shown in fig. 4.
The volume tank temperature control unit is used for adjusting the temperature of the working medium in the volume control tank 12 so as to maintain the temperature in a reasonable interval. When the temperature of the working medium in the capacity control tank 12 needs to be reduced, namely the power of the circulating pump 19 is increased, the flow rate of cooling water entering the storage cooler 18 from the cold water storage tank 10 is increased, and the working medium is further cooled; conversely, the power of the circulation pump 19 is reduced.
Of course, the present invention is capable of other various embodiments and its several details are capable of modification and variation in light of the present invention, as will be apparent to those skilled in the art, without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (7)
1. The system is characterized by comprising an ultra-high temperature compressor (1), a molten salt heater (2), an expander (3), a motor (4), a heat regenerator (5), a heat absorber (6), a low-temperature molten salt tank (7), a high-temperature molten salt tank (8), a hot water storage tank (9), a cold water storage tank (10), a volume controller (11), a volume control tank (12), a discharge valve (13), a pressure reducing valve I (14), a stop valve I (15), a pressure reducing valve II (16), a stop valve II (17), a storage cooler (18), a circulating pump (19) and an electric heater (20);
the outlet of the ultra-high temperature compressor (1) is connected to the inlet of the molten salt heater (2), the outlet of the molten salt heater (2) is connected to the inlet of one side of the heat regenerator (5), the outlet of one side of the heat regenerator (5) is connected to the inlet of the expander (3), the outlet of the expander (3) is connected to the inlet of the heat absorber (6), the outlet of the heat absorber (6) is connected to the inlet of the other side of the heat regenerator (5), and the outlet of the other side of the heat regenerator (5) is connected to the inlet of the ultra-high temperature compressor (1); an outlet of the low-temperature molten salt tank (7) is connected with a molten salt heater (2), and an outlet of the molten salt heater (2) is connected with a high-temperature molten salt tank (8); the water side of the storage cooler (18), the hot water storage tank (9), the water side of the heat absorber (6), the cold water storage tank (10) and the circulating pump (19) are sequentially and circularly connected through pipelines; the working medium side of the storage cooler (18) is connected with the inlet of the volume control tank (12) through a first pipeline, and a pressure reducing valve I (14) and a stop valve I (15) are sequentially arranged from the storage cooler (18) to the volume control tank (12); the outlet of the volume control tank (12) is connected to a pipeline between the heat regenerator and the ultra-high temperature compressor (1) through a pressure reducing valve II (16) and a stop valve II (17) and through an electric heater (20); the discharge valve (13) is arranged on a pipeline connected with the bottom of the volume control tank (12); the volume controller (11) takes a rotating speed signal of the ultra-high temperature compressor (1) as an input and outputs control signals for the pressure reducing valve I (14) and the pressure reducing valve II (16);
the system is also provided with a gas storage tank A and a gas storage tank B;
the gas storage tank A and the gas storage tank B are arranged on a gas pipeline between the compressor and the heat regenerator, wherein the gas storage tank A and the gas storage tank B are respectively loaded with a gas component A and a gas component B;
the gas component A is any one of neon, argon and xenon;
the gas component B is any one of air, carbon dioxide, nitrogen and helium;
in a high temperature mode, namely, the outlet temperature T of the ultra-high temperature compressor is in the range of 500-800 ℃, more gas component A is injected into the gas side circulation system through the gas storage tank A, so that the relation between the volume percentage X of the gas component A in the gas circulation and the outlet temperature T of the ultra-high temperature compressor meets X= (T-320)/6; in the medium temperature mode, namely the outlet temperature T of the ultra-high temperature compressor is 300-500 ℃, more gas component B is injected into the gas side circulation system through the gas storage tank B, so that the relation between the volume percentage X of the gas component A in the gas circulation and the outlet temperature T of the ultra-high temperature compressor meets X=T/10-20;
when the temperature is lower than 300 ℃, all the gases are gas B;
when the temperature is higher than 800 degrees celsius, all are gas a.
2. The ultra-high temperature heat pump energy storage operation control system according to claim 1, wherein the system comprises a power control unit, an instruction processing unit and an actual control subunit, wherein the actual control subunit comprises a compressor inlet pressure control unit, an expander inlet pressure control unit and a volume tank temperature control unit.
3. The ultra-high temperature heat pump-based energy storage operation control system according to claim 1, wherein the design pressure of the volume control tank (12) is the same as the outlet pressure of the ultra-high temperature compressor (1), and the operation pressure is between the outlet pressure and the inlet pressure of the ultra-high temperature compressor (1) so as to realize automatic injection and discharge of working media by using a loop pressure difference; the design temperature of the device is the inlet temperature of the ultra-high temperature compressor (1), and the operation temperature is between the inlet temperature of the ultra-high temperature compressor (1) and the turbine inlet temperature, so that the change of the storage capacity of the working medium is realized by utilizing the temperature change.
4. The ultra-high temperature heat pump-based energy storage operation control system according to claim 3, wherein the electric heater (20) is arranged on the recharging pipeline, and the working medium energy is increased by heating the working medium entering the inlet of the compressor, so that the system boosting rate can be conveniently and rapidly increased in a short time.
5. The ultra-high temperature heat pump-based energy storage operation control system according to claim 4, wherein the storage cooler (18) is located on a working medium discharging pipeline, a cooling water pipeline is connected to the cooling water side, the cooling water pipeline is connected to the cold water storage tank (10) at the upstream side and connected to the hot water storage tank (9) at the downstream side, and a circulating pump (19) is arranged on the cooling water pipeline to pump cooling water of the cold water storage tank (10) to the storage cooler (18).
6. The ultra-high temperature heat pump energy storage operation control system according to claim 5, wherein the pressure reducing valve II (16) and the stop valve II (17) are opened, the valves of the pressure reducing valve I (14) and the stop valve I (15) are kept normally closed, the working medium of the volume control tank (12) flows into the inlet of the compressor after passing through the heater, the inlet pressure of the compressor and the inlet pressure of the turbine are increased, and the energy storage power of the high temperature heat pump is increased.
7. The ultra-high temperature heat pump energy storage operation control system according to claim 6, wherein the valves of the pressure reducing valve I (14) and the stop valve I (15) are opened, the valves of the pressure reducing valve II (16) and the stop valve II (17) are kept normally closed, working media in the system enter the volume control tank (12) after passing through the cooler, the inlet pressure of the compressor and the inlet pressure of the turbine are reduced, and the energy storage power reduction of the high temperature heat pump is realized.
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| CN202210002374.1A CN114484936B (en) | 2022-01-05 | 2022-01-05 | Energy storage operation control system based on ultra-high temperature heat pump |
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| CN202210002374.1A CN114484936B (en) | 2022-01-05 | 2022-01-05 | Energy storage operation control system based on ultra-high temperature heat pump |
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| CN103058298A (en) * | 2013-01-21 | 2013-04-24 | 中国科学院广州能源研究所 | Seawater desalinization and heating-cooling combined supply system driven by low-level heat source |
| CN104807231A (en) * | 2015-05-12 | 2015-07-29 | 上海海洋大学 | Switchable two-stage cascade energy-saving ultralow-temperature refrigeration system for ship |
| CN105180489B (en) * | 2015-07-31 | 2017-10-20 | 华南理工大学 | A kind of mixture throttling refrigerating machine and its refrigerating method for adapting to variable parameter operation |
| CN113738466A (en) * | 2021-08-18 | 2021-12-03 | 西安热工研究院有限公司 | Supercritical carbon dioxide circulating photo-thermal power generation system and method for auxiliary heating of water supply |
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