CN111288533A - Multi-energy multi-source complementary heating system and operation method thereof - Google Patents
Multi-energy multi-source complementary heating system and operation method thereof Download PDFInfo
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- CN111288533A CN111288533A CN202010171477.1A CN202010171477A CN111288533A CN 111288533 A CN111288533 A CN 111288533A CN 202010171477 A CN202010171477 A CN 202010171477A CN 111288533 A CN111288533 A CN 111288533A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D11/00—Central heating systems using heat accumulated in storage masses
- F24D11/02—Central heating systems using heat accumulated in storage masses using heat pumps
- F24D11/0214—Central heating systems using heat accumulated in storage masses using heat pumps water heating system
- F24D11/0221—Central heating systems using heat accumulated in storage masses using heat pumps water heating system combined with solar energy
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
- F24D19/10—Arrangement or mounting of control or safety devices
- F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
- F24D19/1009—Arrangement or mounting of control or safety devices for water heating systems for central heating
- F24D19/1045—Arrangement or mounting of control or safety devices for water heating systems for central heating the system uses a heat pump and solar energy
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S10/00—Solar heat collectors using working fluids
- F24S10/30—Solar heat collectors using working fluids with means for exchanging heat between two or more working fluids
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S10/00—Solar heat collectors using working fluids
- F24S10/50—Solar heat collectors using working fluids the working fluids being conveyed between plates
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S20/00—Solar heat collectors specially adapted for particular uses or environments
- F24S20/40—Solar heat collectors combined with other heat sources, e.g. using electrical heating or heat from ambient air
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S60/00—Arrangements for storing heat collected by solar heat collectors
- F24S60/10—Arrangements for storing heat collected by solar heat collectors using latent heat
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D2200/00—Heat sources or energy sources
- F24D2200/32—Heat sources or energy sources involving multiple heat sources in combination or as alternative heat sources
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/20—Solar thermal
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/70—Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
- Y02E10/44—Heat exchange systems
Abstract
The invention relates to a multi-energy multi-source complementary heating system and an operation method thereof, wherein the system comprises five cycles: the first cycle is an air source heat pump cycle heating and heat storage system and consists of a first evaporator and a first condenser; the second cycle is an intermediate heat exchange and heat storage system which consists of a first condenser, a heat storage and heat exchange water tank and a second evaporator; the third circulation is a water source heat pump heat exchange system which consists of a second evaporator and a second condenser; the fourth cycle is a user side heat utilization system and consists of a second condenser and a heat dissipation tail end; the fifth cycle is a solar heat exchange and storage system, which consists of a solar heat collection plate and a heat storage and exchange water tank. The heating system can exert the complementary advantages of all subsystems to the maximum extent, fully utilizes clean energy such as solar energy, air energy and the like, and solves the problems of low solar energy utilization rate, poor reliability, low heat supply stability of an air source heat pump, low energy efficiency and the like.
Description
Technical Field
The invention relates to the technical field of heating, in particular to a multi-energy multi-source complementary heating system and an operation method thereof.
Background
In recent years, due to the aggravation of environmental problems, biomass energy sources such as coal, petroleum and the like are increasingly limited during heating in winter, and the policy of coal banning and clean energy is issued in each place, so that the problem of a heating source becomes a problem of wide attention in some heating areas without municipal pipe networks and natural gas pipe networks.
The traditional electric boiler heating has the characteristics of high energy consumption, low energy efficiency ratio and the like, the traditional air source heat pump heating has the characteristics of poor weather adaptability, low water outlet temperature, poor stability, poor weather influence on heating, poor system reliability and the like, along with the reduction of outdoor temperature, the efficiency of improving the water supply temperature is obviously reduced, the energy consumption is high and the like, the traditional solar heating has the characteristics of easy weather influence, poor heating time matching, and the like, and the traditional water source heat pump also has the characteristics of many geological conditions, high well drilling cost, difficult well water recharging, easy groundwater pollution and the like.
Disclosure of Invention
The invention aims to provide a multi-energy and multi-source complementary heating system and an operation method thereof, wherein the system can fully exert the technical advantages of multiple energy sources such as an air source heat pump, solar heating, water source heat pump heating and the like, achieves the advantage complementation among the energy sources, can realize the matching of heat production and heat consumption, has stable heat production, and is used for solving the problem of a heating source in cold and cold heating areas.
The technical scheme adopted by the invention is as follows:
the multi-energy multi-source complementary heating system is characterized in that:
the system includes five cycles:
the first cycle is an air source heat pump cycle heating and heat storage system and consists of a first evaporator and a first condenser;
the second cycle is an intermediate heat exchange and heat storage system which consists of a first condenser, a heat storage and heat exchange water tank and a second evaporator;
the third circulation is a water source heat pump heat exchange system which consists of a second evaporator and a second condenser;
the fourth cycle is a user side heat utilization system and consists of a second condenser and a heat dissipation tail end;
the fifth cycle is a solar heat exchange and storage system, which consists of a solar heat collection plate and a heat storage and exchange water tank.
In the first circulating air source heat pump circulating heating and heat storage system, a first throttle expansion valve is arranged on a path of a first condenser flowing to a first evaporator, and a first compressor is arranged on a path of the first evaporator flowing to the first condenser.
In the second-cycle intermediate heat exchange and heat storage system, the first condenser is provided with a bypass pipe.
In the heat transfer heat accumulation system in the middle of the second circulation, the medium of circulation is water, stores low temperature heat accumulation phase change material in the heat-retaining heat exchange water tank, is provided with heat transfer circulating water pump on the route of heat-retaining heat exchange water tank flow direction first condenser, is provided with electronic three-way valve on the route of heat transfer circulating water pump flow direction first condenser, and the bypass pipe inserts electronic three-way valve simultaneously.
In the third circulating water source heat pump heat exchange system, a second compressor is arranged on a path of a second evaporator flowing to a second condenser, and a second throttle expansion valve is arranged on a path of the second condenser flowing to the second evaporator.
In the fourth circulating user side heat utilization system, the circulating medium is water, and a user side hot water circulating water pump is arranged on a path of the second condenser flowing to the heat dissipation tail end.
In the fifth circulation solar heat exchange and heat storage system, the circulating medium is water, and a solar circulating pump is arranged on the path of the heat storage and heat exchange water tank flowing to the solar heat collection plate.
The operation method of the multi-energy multi-source complementary heating system is characterized in that:
the method is realized by the following steps:
the solar heat exchange and storage system is started preferentially according to outdoor meteorological conditions, at the moment, the solar heat exchange and storage system heats water and phase-change materials in the heat storage and storage water tank through the solar heat collecting plate, meanwhile, the intermediate heat exchange and storage system is started, the electric three-way valve is closed, hot water flows to the second evaporator through the bypass pipe to transfer heat to a refrigerant in the water source heat pump heat exchange system, the temperature of the hot water is further increased through the water source heat pump heat exchange system, and then the indoor temperature is increased through the user side heat utilization system;
when outdoor solar energy is insufficient or no solar energy exists at night, the solar heat exchange and heat storage system is closed, the air source heat pump circulating heating and heat storage system is started to extract heat in air, the electric three-way valve is opened at the moment, part of the heat passes through the intermediate heat exchange and heat storage system, part of the heat heats a refrigerant of the second evaporator, and part of the residual heat is stored in the heat storage and heat exchange water tank; and simultaneously, the water source heat pump heat exchange system and the user side heat utilization system are started.
And setting the lowest temperature of the heat storage and heat exchange water tank to be 25 ℃, and when the temperature difference between inlet water and outlet water of the solar heat exchange and heat storage system is higher than 2 ℃, operating the solar heat exchange and heat storage system, or closing the solar heat exchange and heat storage system.
When the radiation heating of the floor is carried out at the tail end of the heat dissipation, the temperature of the supplied and returned water is set to be 50 ℃ and 40 ℃; when the radiator at the tail end of the heat dissipation is used, the temperature of the supplied and returned water is set to be 65 ℃ and 45 ℃.
The invention has the following advantages:
1. the low-grade energy of the solar energy is fully utilized, and the utilization rate of the solar energy is improved. Traditional solar heating needs to heat water to 50 ℃, even more than 65 ℃, and the solar energy utilization rate is low, and the system only needs to heat water to more than 25 ℃, thereby greatly improving the solar energy utilization time and the solar energy utilization efficiency.
2. The environmental adaptability of the air source heat pump is greatly improved, the energy efficiency ratio (COP) of the air source heat pump is improved, and the configuration capacity of the air source heat pump is reduced. In the traditional air source heat pump heating, the hot water temperature needs to be more than 50 ℃, the outlet water temperature is improved along with the reduction of the outdoor temperature, the energy efficiency ratio (COP) is reduced, the heating capacity is reduced, and in order to meet the heating requirement, the capacity configuration needs to be increased, while the lowest outlet water temperature of the air source heat pump of the system is only 25 ℃, the COP of the air source heat pump is greatly improved, and the capacity configuration of the air source heat pump is reduced.
3. The method can fully utilize the electricity price of the local peak valley and well solve the contradiction problem of energy supply and demand time and space matching. The system adopts phase change heat storage, can fully utilize the electricity price at the local peak valley, reduce the operation cost of the system, can transfer redundant energy in the daytime to the night, and well solves the contradiction of energy supply and demand on time and space.
4. The system is stable and reliable, and the energy-saving effect is obvious. The last stage of the system adopts a water source heat pump, and as the temperature of the heat storage water tank is stable and higher, the heat supply stability of the water source heat pump is greatly improved, the energy efficiency ratio (COP) is also greatly improved, and the functional effect is obvious.
In conclusion, the system can fully exert the technical advantages of multiple energy sources such as an air source heat pump, solar heating, water source heat pump heating and the like, achieve the advantage complementation among the energy sources, well solve the problem of the contradiction between the supply and demand time and space matching of energy, improve the stability of the heating effect and greatly save energy consumption.
Drawings
FIG. 1 is a block diagram of the system of the present invention.
In the figure, 1-1, a first evaporator, 1-2, a first compressor, 1-3, a first condenser, 1-4, a first throttle expansion valve, 2-1, a heat exchange circulating water pump, 2-2, a heat storage and exchange water tank, 2-3, a phase change heat storage material, 2-4, an electric three-way valve, 3-1, a solar circulating pump, 3-2, a solar heat collection plate, 4-1, a second evaporator, 4-2, a second compressor, 4-3, a second condenser, 4-4, a second throttle expansion valve, 5-1, a user side hot water circulating water pump, 5-2 and a heat dissipation tail end are included.
Detailed Description
The present invention will be described in detail with reference to specific embodiments.
The invention relates to a multi-energy multi-source complementary heating system, which comprises five cycles, namely:
the first cycle is an air source heat pump cycle heating and heat storage system and consists of a first evaporator 1-1 and a first condenser 1-3;
the second cycle is an intermediate heat exchange and heat storage system which consists of a first condenser 1-3, a heat storage and heat exchange water tank 2-2 and a second evaporator 4-1;
the third circulation is a water source heat pump heat exchange system which consists of a second evaporator 4-1 and a second condenser 4-3;
the fourth cycle is a user side heat utilization system and consists of a second condenser 4-3 and a heat dissipation tail end 5-2;
the fifth cycle is a solar heat exchange and storage system which is composed of a solar heat collection plate 3-2 and a heat storage and exchange water tank 2-2.
In the first circulating air source heat pump circulating heating and heat storage system, a first throttle expansion valve 1-4 is arranged on a path of a first condenser 1-3 flowing to a first evaporator 1-1, and a first compressor 1-2 is arranged on a path of the first evaporator 1-1 flowing to the first condenser 1-3. The first cycle forms an air source heat pump circulation heating and heat storage system according to the reverse Carnot cycle principle, and a first condenser 1-3 of a condenser of the air source heat pump system is connected with an intermediate heat exchange and heat storage system for heat exchange. When the outdoor design temperature is higher than-12 ℃, the air source heat pump refrigerant can be R134a, and when the outdoor design temperature is lower than-12 ℃, the air source heat pump refrigerant is R744.
In the second cycle intermediate heat exchange and heat storage system, the first condenser 1-3 is provided with a bypass pipe for switching different working conditions. In the second circulation intermediate heat exchange and heat storage system, a circulating medium is water, a low-temperature heat storage phase change material is stored in the heat storage and heat exchange water tank 2-2, a heat exchange circulating water pump 2-1 is arranged on a path of the heat storage and heat exchange water tank 2-2 flowing to the first condenser 1-3, an electric three-way valve 2-4 is arranged on a path of the heat exchange circulating water pump 2-1 flowing to the first condenser 1-3, and the bypass pipe is connected to the electric three-way valve 2-4 at the same time. When the air source heat pump circulating heating and heat storage system works, the electric three-way valve 2-4 is opened, and water passes through the first condenser 1-3; when the air source heat pump circulating heating and heat storage system does not work, the electric three-way valve 2-4 is closed, and water circulates through the bypass pipe.
And the third cycle forms a water source heat pump heat exchange system according to the reverse Carnot cycle principle, in the heat exchange system, a second compressor 4-2 is arranged on a path of the second evaporator 4-1 flowing to the second condenser 4-3, and a second throttle expansion valve 4-4 is arranged on a path of the second condenser 4-3 flowing to the second evaporator 4-1. The second evaporator 4-1 of the water source heat pump heat exchange system is connected with the intermediate heat exchange and storage system for heat exchange, and the second condenser 4-3 is used for heat exchange with the user side heat utilization system. When the user terminal adopts floor radiation for heating, the water source heat pump refrigerant filling working medium can be R134a, and when the user terminal adopts a radiator for heating, the water source heat pump refrigerant filling working medium is R744.
In the fourth circulating user side heat utilization system, a circulating medium is water, and a user side hot water circulating water pump 5-1 is arranged on a path of the second condenser 4-3 flowing to the heat dissipation tail end 5-2.
In the fifth circulating solar heat exchange and heat storage system, a circulating medium is water, and a solar circulating pump 3-1 is arranged on a path of the heat storage and heat exchange water tank 2-2 flowing to the solar heat collection plate 3-2.
The equipment comprises two evaporators, two compressors, two condensers, two throttling expansion valves, three water pumps, a heat storage and exchange water tank, a heat storage phase-change material, a solar heat collection plate and a heat dissipation tail end, and all the equipment commonly used in the field can be adopted.
The heating system can exert the complementary advantages of all subsystems to the maximum extent, fully utilizes clean energy such as solar energy, air energy and the like, solves the problems of low solar energy utilization rate, poor reliability, low heat supply stability of the air source heat pump, low energy efficiency and the like, can well solve the contradiction problem of energy matching between supply and demand time and space, improves the stability of heating effect, and greatly saves energy consumption.
The operation method of the multi-energy multi-source complementary heating system is realized by the following steps:
the solar heat exchange and storage system is started preferentially according to outdoor meteorological conditions, at the moment, the solar heat exchange and storage system heats water and phase-change materials in the heat storage and storage water tank 2-2 through the solar heat collection plate 3-2, meanwhile, the middle heat exchange and storage system is started, the electric three-way valve 2-4 is closed, hot water flows to the second evaporator 4-1 through the bypass pipe to transfer heat to a refrigerant in the water source heat pump heat exchange system, the temperature of the hot water is further increased through the water source heat pump heat exchange system, and then the indoor temperature is increased through the user side heat utilization system;
when outdoor solar energy is insufficient or no solar energy exists at night, the solar heat exchange and heat storage system is closed, the air source heat pump circulating heating and heat storage system is started to extract heat in air, the electric three-way valve 2-4 is opened at the moment, part of the heat passes through the intermediate heat exchange and heat storage system, part of the heat heats a refrigerant of the second evaporator 4-1, and part of the residual heat is stored in the heat storage and heat exchange water tank 2-2; and simultaneously, the water source heat pump heat exchange system and the user side heat utilization system are started.
And setting the lowest temperature of the heat storage and heat exchange water tank 2-2 to be 25 ℃, and when the temperature difference between inlet water and outlet water of the solar heat exchange and heat storage system is higher than 2 ℃, operating the solar heat exchange and heat storage system, or closing the solar heat exchange and heat storage system.
According to the different types of the heat dissipation tail end 5-2, setting the water supply and return temperatures of different user side heat utilization systems: when the radiation heating of the heat dissipation tail end 5-2 is performed on the floor, the temperature of the supplied and returned water is set to be 50 ℃ and 40 ℃; when the heat radiation tail end is 5-2 radiators, the water supply and return temperature is set to 65 ℃ and 45 ℃.
The solar heat exchange and storage system 3 obtains heat through the solar heat collector 3-2 and stores the heat in the heat storage and exchange water tank.
The air source heat pump circulating heating and heat storage system is connected with the intermediate heat exchange and heat storage system through the first condenser 1-3, heat in the absorbed air is transferred to the water source heat pump heat exchange system through the intermediate heat exchange and heat storage system and is used as an evaporator of the water source heat pump heat exchange system to produce higher hot water, and the rest heat is stored in the heat storage and heat exchange water tank 2-2.
The medium circulated by the user side heat utilization system is water; the second condenser 4-3 absorbs heat required to be produced by the water source heat pump heat exchange system, and hot water is sent to the heat exchange end through the user end hot water circulating water pump 5-1 so as to improve the indoor temperature.
The invention is not limited to the examples, and any equivalent changes to the technical solution of the invention by a person skilled in the art after reading the description of the invention are covered by the claims of the invention.
Claims (10)
1. The multi-energy multi-source complementary heating system is characterized in that:
the system includes five cycles:
the first cycle is an air source heat pump cycle heating and heat storage system and consists of a first evaporator (1-1) and a first condenser (1-3);
the second cycle is an intermediate heat exchange and heat storage system which consists of a first condenser (1-3), a heat storage and heat exchange water tank (2-2) and a second evaporator (4-1);
the third circulation is a water source heat pump heat exchange system which consists of a second evaporator (4-1) and a second condenser (4-3);
the fourth cycle is a user side heat utilization system and consists of a second condenser (4-3) and a heat dissipation tail end (5-2);
the fifth cycle is a solar heat exchange and storage system which is composed of a solar heat collection plate (3-2) and a heat storage and exchange water tank (2-2).
2. The multi-energy multi-source complementary heating system according to claim 1, wherein:
in the first circulating air source heat pump circulating heating and heat storage system, a first throttle expansion valve (1-4) is arranged on a path of a first condenser (1-3) flowing to a first evaporator (1-1), and a first compressor (1-2) is arranged on a path of the first evaporator (1-1) flowing to the first condenser (1-3).
3. The multi-energy multi-source complementary heating system according to claim 2, wherein:
in the second-cycle intermediate heat exchange and heat storage system, a bypass pipe is arranged on the first condenser (1-3).
4. The multi-energy multi-source complementary heating system according to claim 3, wherein:
in the second-cycle intermediate heat exchange and heat storage system, a circulating medium is water, a low-temperature heat storage phase change material is stored in the heat storage and heat exchange water tank (2-2), a heat exchange circulating water pump (2-1) is arranged on a path of the heat storage and heat exchange water tank (2-2) flowing to the first condenser (1-3), an electric three-way valve (2-4) is arranged on a path of the heat exchange circulating water pump (2-1) flowing to the first condenser (1-3), and the bypass pipe is connected to the electric three-way valve (2-4) simultaneously.
5. The multi-energy multi-source complementary heating system according to claim 4, wherein:
in the third circulating water source heat pump heat exchange system, a second compressor (4-2) is arranged on a path of a second evaporator (4-1) flowing to a second condenser (4-3), and a second throttle expansion valve (4-4) is arranged on a path of the second condenser (4-3) flowing to the second evaporator (4-1).
6. The multi-energy multi-source complementary heating system according to claim 5, wherein:
in the fourth circulating user side heat utilization system, a circulating medium is water, and a user side hot water circulating water pump (5-1) is arranged on a path of the second condenser (4-3) flowing to the heat dissipation tail end (5-2).
7. The multi-energy multi-source complementary heating system according to claim 6, wherein:
in the fifth circulating solar heat exchange and heat storage system, a circulating medium is water, and a solar circulating pump (3-1) is arranged on a path of the heat storage and heat exchange water tank (2-2) flowing to the solar heat collection plate (3-2).
8. The operation method of the multi-energy multi-source complementary heating system is characterized in that:
the method is realized by the following steps:
the solar heat exchange and heat storage system is started preferentially according to outdoor meteorological conditions, at the moment, the solar heat exchange and heat storage system heats water and phase-change materials in the heat storage and heat exchange water tank (2-2) through the solar heat collecting plate (3-2), meanwhile, the intermediate heat exchange and heat storage system is started, the electric three-way valve (2-4) is closed, hot water flows to the second evaporator (4-1) through the bypass pipe to transfer heat to a refrigerant in the water source heat pump heat exchange system, the temperature of the hot water is further increased through the water source heat pump heat exchange system, and then the indoor temperature is increased through the heat system for the user side;
when outdoor solar energy is insufficient or no solar energy exists at night, the solar heat exchange and heat storage system is closed, the air source heat pump circulating heating and heat storage system is started to extract heat in the air, the electric three-way valve (2-4) is opened at the moment, part of the heat passes through the intermediate heat exchange and heat storage system, the refrigerant of the second evaporator (4-1) is heated, and the rest of the heat is stored in the heat storage and heat exchange water tank (2-2); and simultaneously, the water source heat pump heat exchange system and the user side heat utilization system are started.
9. The method of operating a multi-energy multi-source complementary heating system according to claim 8, wherein:
and setting the lowest temperature of the heat storage and heat exchange water tank (2-2) to be 25 ℃, and when the temperature difference between inlet water and outlet water of the solar heat exchange and heat storage system is higher than 2 ℃, operating the solar heat exchange and heat storage system, or closing the solar heat exchange and heat storage system.
10. The method of operating a multi-energy multi-source complementary heating system according to claim 9, wherein:
when the radiation heating of the heat dissipation tail end (5-2) is performed on the floor, the temperature of the supplied backwater is set to be 50 ℃ and 40 ℃; when the heat radiator is arranged at the tail end (5-2) of the heat radiation, the temperature of the supplied and returned water is set to be 65 ℃ and 45 ℃.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114087640A (en) * | 2021-11-24 | 2022-02-25 | 河北建筑工程学院 | Heating system and heating control method |
| CN117553342A (en) * | 2024-01-12 | 2024-02-13 | 四川大学 | Heating system with efficient unit operation and heating method thereof |
| CN117553342B (en) * | 2024-01-12 | 2024-05-03 | 四川大学 | Heating system with efficient unit operation and heating method thereof |
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2020
- 2020-03-12 CN CN202010171477.1A patent/CN111288533A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114087640A (en) * | 2021-11-24 | 2022-02-25 | 河北建筑工程学院 | Heating system and heating control method |
| CN114087640B (en) * | 2021-11-24 | 2022-12-09 | 河北建筑工程学院 | Heating system and heating control method |
| CN117553342A (en) * | 2024-01-12 | 2024-02-13 | 四川大学 | Heating system with efficient unit operation and heating method thereof |
| CN117553342B (en) * | 2024-01-12 | 2024-05-03 | 四川大学 | Heating system with efficient unit operation and heating method thereof |
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