CN107036155B - Double-heat source heat pump-solar energy combined heating system and method - Google Patents
Double-heat source heat pump-solar energy combined heating system and method Download PDFInfo
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- CN107036155B CN107036155B CN201710469795.4A CN201710469795A CN107036155B CN 107036155 B CN107036155 B CN 107036155B CN 201710469795 A CN201710469795 A CN 201710469795A CN 107036155 B CN107036155 B CN 107036155B
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 87
- 238000000034 method Methods 0.000 title claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 136
- 238000005338 heat storage Methods 0.000 claims description 72
- 230000008020 evaporation Effects 0.000 claims description 38
- 238000001704 evaporation Methods 0.000 claims description 38
- 239000003570 air Substances 0.000 claims description 28
- 239000012080 ambient air Substances 0.000 claims description 3
- 239000003245 coal Substances 0.000 abstract description 6
- 230000005611 electricity Effects 0.000 abstract description 6
- 238000009833 condensation Methods 0.000 abstract description 3
- 230000005494 condensation Effects 0.000 abstract description 3
- 230000009977 dual effect Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
Classifications
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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
- F24D15/00—Other domestic- or space-heating systems
- F24D15/04—Other domestic- or space-heating systems using heat pumps
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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
- F24D2200/12—Heat pump
- F24D2200/123—Compression type heat pumps
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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
- F24D2200/14—Solar energy
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- Engineering & Computer Science (AREA)
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The invention relates to a double-heat-source heat pump-solar energy combined heating system and a method, wherein the system comprises a double-heat-source heat pump unit, a solar energy system and a user side device; the solar energy system is connected with the user side device and is used for converting solar energy into heat energy, heating a water source and providing the heat energy for the user side device; the double-heat-source heat pump unit is connected with the user side device and is provided with a double-heat-source heat pump for assisting the solar energy system to provide heat energy for the user side device. The invention solves the problems of easy condensation and low heat exchange efficiency of the air source heat pump in the heating engineering by adopting the mode of combining the double heat source heat pump and solar energy for heating, so that the strategy of changing coal into electricity can be smoothly carried out.
Description
Technical Field
The invention belongs to the field of household heating, and particularly relates to a double-heat-source heat pump-solar energy combined heating system and method.
Background
In recent years, heating in northern cities has been developed better, but heating in rural areas in northern areas is still not in existence, or heating is performed by adopting a more traditional common coal stove, so that sanitary conditions are poor, and life quality cannot be improved. Therefore, the key point of the rural heating problem is to seek an energy-saving and environment-friendly heating mode suitable for rural areas.
The heating fossil energy combustion in winter is one of the main reasons for causing haze, so that the traditional heating mode in northern rural areas is changed, and the 'coal electricity changing' is a necessary path for improving the air quality. However, if the direct electricity is used for heating, the direct conversion of high-grade electricity into low-grade heat wastes resources. Therefore, considering that the soil-coal furnace is partially adopted for heating in the rural houses, the development of heat pump heating is the best mode for solving the northern rural heating problem. In north, a series of problems such as frosting and operation efficiency reduction occur in a heat pump system with a single heat source due to low temperature in deep winter, so that technical improvement on the heat pump system with the single heat source is needed.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention provides a double-heat-source heat pump-solar energy combined heating system which has the advantages of low energy consumption, high heating efficiency, energy conservation and environmental protection.
The invention adopts the following technical scheme:
a double-heat source heat pump-solar energy combined heating system comprises a double-heat source heat pump unit, a solar energy system and a user side device; the solar energy system is connected with the user side device and is used for converting solar energy into heat energy, heating a water source and providing the heat energy for the user side device; the double-heat-source heat pump unit is connected with the user side device and is provided with a double-heat-source heat pump for assisting the solar energy system to provide heat energy for the user side device.
Further, the double-heat-source heat pump unit comprises a heat pump condenser, a heat pump compressor connected to one end of the heat pump condenser, and a heat pump expansion valve connected to the other end of the heat pump condenser; the heat pump compressor is respectively connected with the heat pump air source evaporation system and the heat pump water source evaporation system through the first ball valve, and the heat pump expansion valve is also respectively connected with the heat pump air source evaporation system and the heat pump water source evaporation system through the second ball valve.
Further, the first ball valve comprises a ball valve V3 connected with the heat pump air source evaporation system and a ball valve V4 connected with the heat pump water source evaporation system.
Further, the second ball valve comprises a ball valve V5 connected with the heat pump air source evaporation system and a ball valve V6 connected with the heat pump water source evaporation system.
Further, the heat pump air source evaporation system adopts a heat pump air source evaporator, and the heat pump water source evaporation system adopts a heat pump water source evaporator.
Furthermore, the solar energy system comprises a solar heat collector, a heat storage water tank and a heat storage water tank side coil pipe, wherein the solar heat collector converts solar energy into heat energy, and the heat storage water tank side coil pipe stores heat energy of water in the heat storage water tank and stores the heat energy in the heat storage water tank so as to provide heat energy for a user side device.
Furthermore, the heat storage water tank is also provided with a heat storage water tank tail end side coil pipe.
Further, a control end of the heat pump condenser is connected with a first temperature control valve V1 and a ball valve V2, and the first temperature control valve V1 is connected with one end of a coil pipe at the tail end of the heat storage water tank through a second temperature control valve V7; the ball valve V2 is connected with the other end of the side coil pipe at the tail end of the heat storage water tank through a ball valve V8; the control end of the heat pump water source evaporation system is connected with the heat storage water tank through a ball valve V9 and a ball valve V10.
Further, the user side device comprises a water pipe, a fan coil system or a floor heating system.
The invention also provides a technical scheme, a double-heat-source heat pump-solar energy combined heating method, which adopts a double-heat-source heat pump-solar energy combined heating system, wherein the double-heat-source heat pump-solar energy combined heating system comprises a double-heat-source heat pump unit, a solar energy system and a user side device; the solar energy system is connected with the user side device and is used for converting solar energy into heat energy, heating a water source and providing the heat energy for the user side device; the double-heat-source heat pump unit is connected with the user side device and is provided with a double-heat-source heat pump for assisting the solar energy system to provide heat energy for the user side device;
when the outdoor temperature is higher than a set value, a solar energy system is adopted to provide heat energy for the user side device;
when the outdoor temperature is lower than the set value, the double-heat source heat pump unit is adopted to alternately provide heat energy for the user side device.
The working flow of the invention is as follows:
the invention has five working states: a hot water heating state in sunny days, a hot water supplying state in cloudy days, an initial winter heating state, a middle winter heating state and a deep winter heating state.
The sun light is sufficient in sunny days, the solar heat collector 6 converts the energy extracted from the sun into heat energy, the heat storage water tank 7 is stored by the heat storage water tank side coil pipe 8 and stored in the water tank, and domestic hot water is supplied to users by the domestic hot water supply pipe 11.
When the continuous overcast and rainy weather appears, the heat storage water tank 7 is heated only by the solar energy, and the domestic hot water of the user cannot be met, the water source heat pump is used as an auxiliary heat source for heating the heat storage water tank to supply the domestic hot water of the user. At the moment, the first temperature control valve V1, the ball valves V2, V4, V6, V9 and V10 are opened; ball valves 14-V3, V5 are closed.
Heating state in winter: when the indoor temperature is lower than 18 ℃ and the temperature in the heat storage water tank is higher than 50 ℃, the outdoor temperature is not particularly low, the indoor required heat load is not high, the heat storage water tank 7 can directly heat the indoor through the heat storage water tank tail end coil pipe 7, and the indoor load can be completely borne by the heat storage water tank. At the moment, the second temperature control valve V7 and the ball valve V8 are opened; the first temperature control valve V1, the ball valves V2, V3, V4, V5, V6, V9 and V10 are closed.
Heating state in winter: when the indoor temperature is lower than 18 ℃ and the temperature in the heat storage water tank is lower than 50 ℃ and the outdoor temperature is higher than-5 ℃, the air source heat pump is automatically started, and the compressor is driven to operate to heat by absorbing low-level heat energy in ambient air and utilizing a small amount of electric energy, so that the heating requirement of farmhouses in winter is met. At the moment, the first temperature control valve V1, the ball valves V2, V3 and V5 are opened; the first temperature control valve V7, the ball valves V4, V6, V8, V9 and V10 are closed.
Deep winter heating state: when the outdoor winter temperature is lower than-5 ℃, a series of problems such as frosting, operation efficiency reduction and the like of the air source heat pump can occur under the low-temperature environment, and the heating effect is poor. Then the first temperature control valve V1, the ball valves V2, V4, V6, V9 and V10 of the valve are opened; the second temperature control valve V7, the ball valve V3, the ball valve V5 and the ball valve V8 are closed, so that the heat source of the heat pump is converted into hot water in the heat storage water tank 10, the heat pump unit can operate at a higher temperature, the refrigerant absorbs heat and evaporates in a relatively higher temperature, the heating effect is improved, and the indoor temperature is ensured.
The invention has the beneficial effects that: the invention adopts clean energy, simultaneously ensures heating requirements, improves the heating performance coefficient of the unit, improves heat exchange efficiency, and ensures the hot water supply of users all the year round. The problems that the air source heat pump is easy to form condensation and the heat exchange efficiency is low in the heating engineering are solved by adopting the mode of combining the double heat source heat pump and solar energy for heating, so that a coal electricity changing strategy can be smoothly carried out.
Drawings
Fig. 1 is a schematic structural view of a dual heat source heat pump-solar combined heating system of the present invention.
Fig. 2 is a schematic diagram a of the operation state of the dual heat source heat pump-solar combined heating system of the present invention.
Fig. 3 is a schematic diagram b of the operation state of the dual heat source heat pump-solar combined heating system of the present invention.
Fig. 4 is a schematic diagram c of the operation state of the dual heat source heat pump-solar combined heating system of the present invention.
Fig. 5 is a schematic diagram d of the operation state of the dual heat source heat pump-solar combined heating system of the present invention.
Fig. 6 is a schematic view e of the operation state of the dual heat source heat pump-solar combined heating system of the present invention.
The specific embodiment is as follows:
the invention is further illustrated by the following examples in conjunction with the accompanying drawings:
it should be noted that the following detailed description is illustrative and is intended to provide further explanation of the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
An exemplary embodiment of the invention is a dual-heat-source heat pump-solar energy combined heating system, which comprises a dual-heat-source heat pump unit, a solar energy system and a user side device; the solar energy system is connected with the user side device and is used for converting solar energy into heat energy, heating a water source and providing the heat energy for the user side device; the double-heat source heat pump unit is connected with the user side device and is provided with a double-heat source heat pump for assisting the solar energy system to provide heat energy for the user side device.
The double-heat-source heat pump unit comprises a heat pump condenser, a heat pump compressor connected to one end of the heat pump condenser, and a heat pump expansion valve connected to the other end of the heat pump condenser; the heat pump compressor is respectively connected with the heat pump air source evaporation system and the heat pump water source evaporation system through the first ball valve, and the heat pump expansion valve is also respectively connected with the heat pump air source evaporation system and the heat pump water source evaporation system through the second ball valve. The heat pump air source evaporation system adopts a heat pump air source evaporator, and the heat pump water source evaporation system adopts a heat pump water source evaporator.
The first ball valve comprises a ball valve V3 connected with the heat pump air source evaporation system and a ball valve V4 connected with the heat pump water source evaporation system.
The second ball valve comprises a ball valve V5 connected with the heat pump air source evaporation system and a ball valve V6 connected with the heat pump water source evaporation system.
The solar energy system comprises a solar heat collector, a heat storage water tank and a heat storage water tank side coil pipe, wherein the solar heat collector converts solar energy into heat energy, the heat storage water tank side coil pipe stores heat energy of water in the heat storage water tank and stores the heat energy in the heat storage water tank, the heat storage water tank provides heat energy for a user side device, and the heat storage water tank is further provided with a heat storage water tank tail end side coil pipe.
The control end of the heat pump condenser is connected with a first temperature control valve V1 and a ball valve V2, and the first temperature control valve V1 is connected with one end of a coil pipe at the tail end of the heat storage water tank through a second temperature control valve V7; the ball valve V2 is connected with the other end of the side coil pipe at the tail end of the heat storage water tank through a ball valve V8; the control end of the heat pump water source evaporation system is connected with the heat storage water tank through a ball valve V9 and a ball valve V10.
The user side device can be a water pipe, a fan coil system or a floor heating system.
The invention further provides a heating method adopting the double-heat-source heat pump-solar energy combined heating system, in particular to a double-heat-source heat pump-solar energy combined heating system, wherein the double-heat-source heat pump-solar energy combined heating system comprises a double-heat-source heat pump unit, a solar energy system and a user side device; the solar energy system is connected with the user side device and is used for converting solar energy into heat energy, heating a water source and providing the heat energy for the user side device; the double-heat-source heat pump unit comprises a heat pump condenser, a heat pump compressor connected to one end of the heat pump condenser, and a heat pump expansion valve connected to the other end of the heat pump condenser; the heat pump compressor is respectively connected with the heat pump air source evaporation system and the heat pump water source evaporation system through a ball valve V3 and a ball valve V4, and the heat pump expansion valve is also respectively connected with the heat pump air source evaporation system and the heat pump water source evaporation system through a ball valve V5 and a ball valve V6;
the solar energy system is provided with a heat storage water tank, wherein the heat storage water tank comprises a heat storage water tank side coil pipe and a heat storage water tank tail end side coil pipe;
the control end of the heat pump condenser is connected with a first temperature control valve V1 and a ball valve V2, and the first temperature control valve V1 is connected with one end of a coil pipe at the tail end of the heat storage water tank through a second temperature control valve V7; the ball valve V2 is connected with the other end of the side coil pipe at the tail end of the heat storage water tank through a ball valve V8; the control end of the heat pump water source evaporation system is connected with the heat storage water tank through a ball valve V9 and a ball valve V10;
as shown in fig. 2-6:
when the outdoor temperature is higher than the first set temperature, the solar system is adopted to heat the water source corresponding to the hot water heating state on a sunny day, and heat energy is provided for the user side device. The solar heat collector 6 converts the energy extracted from the sun into heat energy, stores the heat of the heat storage water tank 7 through the solar energy-heat storage water tank side coil pipe 8 and stores the heat in the water tank, and supplies domestic hot water to a user through the domestic hot water supply pipe 11.
When the outdoor temperature is lower than the first set temperature and is higher than the second set temperature, corresponding continuous overcast and rainy weather occurs; when the solar energy is used for heating the heat storage water tank 7, and the domestic hot water requirement of a user cannot be met, the water source heat pump is used as an auxiliary heat source for heating the heat storage water tank to supply the domestic hot water to the user, and the first temperature control valve V1, the ball valve V2, the ball valve V4, the ball valve V6, the ball valve V9 and the ball valve V10 are opened; the ball valves V3, V5 are closed.
When the outdoor temperature is lower than the second set temperature and higher than the third set temperature, the indoor temperature is lower than 18 ℃ and the temperature in the heat storage tank is higher than 50 ℃ corresponding to the initial winter heating state, the outdoor temperature is not particularly low at this time, the indoor required heat load is not high, the heat storage tank 7 can directly heat the indoor through the heat storage tank-tail end coil pipe 7, and the indoor load can be completely borne only by the heat storage tank. The heat storage water tank provides heat energy for the user side device through the heat storage water tank-tail end measuring coil pipe, and the second temperature control valve V7 and the ball valve 1V8 are opened; the first temperature control valve V1, the ball valves 1V2, V3, V4, V5, V6, V9 and V10 are closed.
When the outdoor temperature is lower than the third set temperature and higher than the fourth set temperature, corresponding to a winter heating state, the indoor temperature is lower than 18 ℃ and the temperature in the heat storage water tank is lower than 50 ℃, when the outdoor temperature is higher than-5 ℃, the air source heat pump is automatically started, the compressor is driven to operate to heat by absorbing low-level heat energy in ambient air and utilizing a small amount of electric energy, so that the winter heating requirement of a farm house is met, and the first temperature control valve V1, the ball valve V2, the ball valve V3 and the ball valve V5 are opened; the second temperature control valve V7, the ball valves 1V4, V6, V8, V9 and V10 are closed.
When the outdoor temperature is lower than the fourth set temperature and higher than the fifth set temperature, the outdoor temperature corresponds to a deep winter heating state, and when the outdoor winter temperature is lower than-5 ℃, a series of problems such as frosting, operation efficiency reduction and the like possibly occur in the air source heat pump under a low-temperature environment, the heating effect is poor, and the first-type temperature control valves V1, the ball valves V2, V4, V6, V9 and V10 are opened; the first type of temperature control valve V7, the ball valve V3, the ball valve V5 and the ball valve V8 are closed, so that the heat source of the double heat source heat pump unit is converted into hot water in the heat storage water tank, the double heat source heat pump unit can operate at a higher temperature, the refrigerant is enabled to absorb heat and evaporate in a relatively higher temperature, the heating effect is improved, and the indoor temperature is guaranteed.
The invention has the advantages of ensuring the heating requirement, improving the heating performance coefficient of the unit, improving the heat exchange efficiency and ensuring the hot water supply of users all the year round while adopting clean energy. The problems that the air source heat pump is easy to form condensation and the heat exchange efficiency is low in the heating engineering are solved by adopting the mode of combining the double heat source heat pump and solar energy for heating, so that a coal electricity changing strategy can be smoothly carried out.
The foregoing description is only of the preferred embodiments of the present application and is not intended to limit the same, but rather, various modifications and variations may be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.
Claims (5)
1. A double heat source heat pump-solar energy joint heating system is characterized in that: the system comprises a double-heat-source heat pump unit, a solar energy system and a user side device; the solar energy system is connected with the user side device and is used for converting solar energy into heat energy, heating a water source and providing the heat energy for the user side device; the double-heat-source heat pump unit is connected with the user side device and is provided with a double-heat-source heat pump for assisting the solar energy system to provide heat energy for the user side device;
the double-heat-source heat pump unit comprises a heat pump condenser, a heat pump compressor connected to one end of the heat pump condenser, and a heat pump expansion valve connected to the other end of the heat pump condenser; the heat pump compressor is respectively connected with the heat pump air source evaporation system and the heat pump water source evaporation system through a first ball valve, and the heat pump expansion valve is also respectively connected with the heat pump air source evaporation system and the heat pump water source evaporation system through a second ball valve;
the first ball valve comprises a ball valve V3 connected with the heat pump air source evaporation system and a ball valve V4 connected with the heat pump water source evaporation system;
the second ball valve comprises a ball valve V5 connected with the heat pump air source evaporation system and a ball valve V6 connected with the heat pump water source evaporation system;
the solar energy system comprises a solar heat collector, a heat storage water tank and a heat storage water tank side coil pipe, wherein the heat storage water tank is also provided with a heat storage water tank tail end side coil pipe;
the control end of the heat pump condenser is connected with a first temperature control valve V1 and a ball valve V2, and the first temperature control valve V1 is connected with one end of a coil pipe at the tail end of the heat storage water tank through a second temperature control valve V7; the ball valve V2 is connected with the other end of the side coil pipe at the tail end of the heat storage water tank through a ball valve V8; the control end of the heat pump water source evaporation system is connected with the heat storage water tank through a ball valve V9 and a ball valve V10;
the double-heat source heat pump unit alternately provides heat energy for the user side device;
the system comprises five working states: a hot water heating state in sunny days, a hot water heating state in cloudy days, an initial winter heating state, a middle winter heating state and a deep winter heating state;
when the outdoor temperature is higher than the first set temperature, the solar energy system is adopted to heat the water source corresponding to the hot water heating state on a sunny day, heat energy is provided for the user side device, the solar energy collector converts the energy extracted from the sun into heat energy, the heat storage water tank is stored with heat through the solar energy-heat storage water tank side coil pipe and stored in the water tank, and domestic hot water is supplied to the user through the domestic hot water supply pipe;
when the outdoor temperature is lower than the first set temperature and is higher than the second set temperature, corresponding continuous overcast and rainy weather occurs, when the solar energy is only used for heating the heat storage water tank and the requirement of domestic hot water of a user cannot be met, the water source heat pump is used as an auxiliary heat source for heating the heat storage water tank to supply domestic hot water of the user, the first temperature control valve V1, the ball valves V2, V4, V6, V9 and V10 are opened, and the ball valves V3 and V5 are closed;
when the outdoor temperature is lower than the second set temperature and higher than the third set temperature, corresponding to the initial winter heating state, when the internal temperature is lower than 18 ℃ and the temperature in the heat storage water tank is higher than 50 ℃, the heat storage water tank heats the room through the heat storage water tank-tail end coil pipe, the heat storage water tank bears the indoor load, the heat storage water tank provides heat energy for a user side device through the heat storage water tank-tail end coil pipe, and the second temperature control valve V7 and the ball valve V8 are opened; the first temperature control valve V1, the ball valves V2, V3, V4, V5, V6, V9 and V10 are closed;
when the outdoor temperature is lower than the third set temperature and higher than the fourth set temperature, corresponding to a medium winter heating state, the indoor temperature is lower than 18 ℃ and the temperature in the heat storage water tank is lower than 50 ℃, when the outdoor temperature is higher than-5 ℃, the air source heat pump is automatically started, the compressor is driven to operate to heat by absorbing low-level heat energy in ambient air and a small amount of electric energy, and the first temperature control valve V1, the ball valve V2, the ball valve V3 and the ball valve V5 are started; the second temperature control valve V7, the ball valves V4, V6, V8, V9 and V10 are closed;
when the outdoor temperature is lower than the fourth set temperature and higher than the fifth set temperature, the outdoor temperature corresponds to a deep winter heating state, when the outdoor winter temperature is lower than-5 ℃, the first type of temperature control valves V1, the ball valves V2, V4, V6, V9 and V10 are opened, the first type of temperature control valves V7, the ball valves V3, V5 and V8 are closed, the heat source of the double heat source heat pump unit is converted into hot water in the heat storage water tank, and the double heat source heat pump unit operates at a higher temperature.
2. The system according to claim 1, wherein: the heat pump air source evaporation system adopts a heat pump air source evaporator, and the heat pump water source evaporation system adopts a heat pump water source evaporator.
3. The system according to claim 1, wherein: the solar heat collector converts solar energy into heat energy, and the heat energy is stored in water in the heat storage water tank through the heat storage water tank side coil pipe and stored in the heat storage water tank, so that heat energy is provided for a user side device.
4. The system according to claim 1, wherein: the user side device comprises a water pipe, a fan coil system or a floor heating system.
5. A double-heat source heat pump-solar energy combined heating method is characterized in that: the dual-heat-source heat pump-solar energy combined heating system according to claim 1 is adopted, and comprises a dual-heat-source heat pump unit, a solar energy system and a user side device; the solar energy system is connected with the user side device and is used for converting solar energy into heat energy, heating a water source and providing the heat energy for the user side device; the double-heat-source heat pump unit is connected with the user side device and is provided with a double-heat-source heat pump for assisting the solar energy system to provide heat energy for the user side device;
when the outdoor temperature is higher than a set value, a solar energy system is adopted to provide heat energy for the user side device;
when the outdoor temperature is lower than the set value, the double-heat source heat pump unit is adopted to alternately provide heat energy for the user side device.
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| CN110296461A (en) * | 2019-05-09 | 2019-10-01 | 苏州热立方新能源有限公司 | A kind of solar energy heating system and its control method of heat pump auxiliary |
| CN110145787B (en) * | 2019-05-23 | 2020-08-11 | 浙江大学 | Solar energy and heat pump combined heating system and method suitable for alpine regions |
| CN110469896A (en) * | 2019-07-29 | 2019-11-19 | 合肥中南光电有限公司 | A kind of solar air source hybrid system |
| CN110631126A (en) * | 2019-09-27 | 2019-12-31 | 宁夏宝塔石化煤化工研究院有限公司 | Water heating system and field heating system for pressure test in hydraulic test place in winter |
| CN111373962B (en) * | 2020-04-20 | 2022-03-04 | 临沂飞龙环保科技有限公司 | Seed culture greenhouse temperature adjusting device and adjusting method |
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| JP2004162983A (en) * | 2002-11-12 | 2004-06-10 | Hitachi Housetec Co Ltd | Heat pump built-in type hot water storage water heater |
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