CN110567038A - solar energy and air energy composite heat pump system and working method thereof - Google Patents
solar energy and air energy composite heat pump system and working method thereof Download PDFInfo
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- CN110567038A CN110567038A CN201910715288.3A CN201910715288A CN110567038A CN 110567038 A CN110567038 A CN 110567038A CN 201910715288 A CN201910715288 A CN 201910715288A CN 110567038 A CN110567038 A CN 110567038A
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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
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S10/00—Solar heat collectors using working fluids
- F24S10/40—Solar heat collectors using working fluids in absorbing elements surrounded by transparent enclosures, e.g. evacuated solar collectors
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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
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S70/00—Details of absorbing elements
- F24S70/20—Details of absorbing elements characterised by absorbing coatings; characterised by surface treatment for increasing absorption
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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
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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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- 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
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Abstract
the invention discloses a solar energy and air energy composite heat pump system suitable for heating of a high-temperature radiator. According to the technical scheme provided by the invention, on the premise of meeting the heating requirement of the high-temperature radiator, the working efficiency of the air source heat pump is improved, the service life of the air source heat pump is prolonged, the system operation cost is effectively reduced by utilizing solar energy, and the solar heat pump can be widely applied to heating transformation of clean energy in cold regions. The technical scheme provided by the invention is energy-saving, environment-friendly, pollution-free, flexible and convenient to operate, safe and reliable, and has stronger pertinence, practicability and popularization value.
Description
Technical Field
The invention relates to the technical field of heating ventilation and air conditioning, in particular to a solar energy and air energy composite heat pump system and a working method thereof.
Background
At present, coal-fired boilers are mostly used for heating in northern areas of China, particularly rural areas, a large amount of carbon monoxide, carbon dioxide, sulfur dioxide and dust particles are generated, and air pollution is serious. As a clean energy heating technology, the air source heat pump consumes a small amount of electric energy by utilizing the reverse Carnot cycle principle, absorbs low-temperature heat energy from air, and converts the low-temperature heat energy into high-temperature heat energy through the compressor to heat a building. The air source heat pump has the advantages of energy conservation, environmental protection, wide application range, convenient installation and the like, but also has some technical defects: the running efficiency is reduced rapidly along with the reduction of the environmental temperature, so that the running cost is higher, and the outlet water temperature of the air source heat pump is lower, so that the air source heat pump is not suitable for buildings with high-temperature radiators at the tail ends for heating.
Solar energy is not only a primary energy source, but also a renewable energy source, and has the characteristics of rich resources, no pollution, no need of transportation, low use cost and the like. The solar heat collector is a key part of a solar heat utilization system, and converts solar energy into heat energy through a solar selective heat absorption coating and stores the heat energy. The solar heat collector mainly comprises an all-glass vacuum tube heat collector, a U-shaped tubular vacuum tube heat collector, a heat pipe type vacuum tube heat collector and a flat-plate type solar heat collector, wherein the all-glass vacuum tube heat collector has the characteristics of high transmittance and absorptivity to sunlight, low heat reflectivity, small convective heat loss, long annual service life and the like, and is particularly suitable for being used in northern cold regions.
disclosure of Invention
In order to solve the limitations and defects of the prior art, the invention provides a solar energy and air energy composite heat pump system suitable for heating of a high-temperature radiator, which comprises an air source heat pump, an all-glass vacuum tube type solar heat collector, a phase change energy storage module, a high-temperature water source heat pump, a solar heat collection circulating pump, a heat source side circulating pump, a heat supply circulating pump and the high-temperature radiator;
the air source heat pump is respectively connected with the phase change energy storage module and one end of the heat source side circulating pump, the high-temperature water source heat pump is respectively connected with the phase change energy storage module and the other end of the heat source side circulating pump, one end of the solar heat collection circulating pump is connected with the phase change energy storage module, the other end of the solar heat collection circulating pump is connected with one end of the all-glass vacuum tube type solar heat collector, the other end of the all-glass vacuum tube type solar heat collector is connected with the phase change energy storage module, one end of the heat supply circulating pump is connected with the high-temperature water source heat pump, the other end of the heat supply circulating pump is connected with one end of the high-temperature radiator, and the other end of;
The all-glass vacuum tube type solar heat collector is used for preparing first low-temperature heat energy, and the first low-temperature heat energy is stored in the phase change energy storage module through a heat exchange coil arranged in the phase change energy storage module;
The air source heat pump is used for preparing second low-temperature heat energy, and the second low-temperature heat energy is stored in the phase change energy storage module through a circulating medium;
The phase change energy storage module is used for storing the first low-temperature heat energy and the second low-temperature heat energy and stabilizing the working condition of the high-temperature water source heat pump;
the high-temperature water source heat pump promotes the low-temperature heat energy stored in the phase-change energy storage module into high-temperature heat energy through a compressor.
optionally, the phase change energy storage module is a horizontally placed pot-shaped structure, and the phase change energy storage module includes a plurality of energy storage rods, and the energy storage rods are packaged inside the phase change energy storage module and keep a preset distance therebetween through a bracket;
the energy storage rod is made of polyethylene, two ends of the energy storage rod are packaged, and a phase change material with a solid-liquid conversion phase change temperature of 20 ℃ is filled in the energy storage rod.
optionally, the phase change energy storage module further includes a plurality of heat exchange coils, and the heat exchange coils are arranged in groups on the same layer along the inner wall of the tank-shaped structure.
optionally, the distance between the energy storage rods ranges from 3 cm to 5 cm.
Optionally, the filling ratio of the phase change material ranges from 94% to 97%.
Optionally, the heat exchange coil is made of red copper.
Optionally, a connection interface between the phase change energy storage module and the all-glass vacuum tube type solar heat collector is located above the tank body, and the phase change energy storage module is connected with the air source heat pump and the high-temperature water source heat pump through pipelines in a downward-in and upward-out mode.
the invention also provides a working method of the solar energy and air energy composite heat pump system suitable for heating of the high-temperature radiator, wherein the heat pump system comprises any one of the solar energy and air energy composite heat pump systems suitable for heating of the high-temperature radiator, and the working method comprises the following steps:
When the heat pump system starts to supply heat, the heat source side circulating pump is started, and circulating media sequentially flow through the air source heat pump, the phase change energy storage module and the high-temperature water source heat pump;
when the water outlet temperature of the air source heat pump is higher than the solid-liquid conversion phase-change temperature of the phase-change material, the phase-change energy storage module stores heat;
When the water outlet temperature of the air source heat pump is lower than the solid-liquid conversion phase-change temperature of the phase-change material, the phase-change energy storage module releases heat;
When the temperature of inlet water is lower than 10 ℃, all phase-change materials of the phase-change energy storage module are converted from liquid state to solid state, the phase-change energy storage module releases heat, and the air source heat pump starts to work;
When the temperature of inlet water is higher than 25 ℃, all phase-change materials of the phase-change energy storage module are converted from a solid state to a liquid state, the phase-change energy storage module stores heat, and the air source heat pump stops working.
The invention has the following beneficial effects:
The invention provides a solar energy and air energy composite heat pump system suitable for heating of a high-temperature radiator. According to the technical scheme provided by the invention, on the premise of meeting the heating requirement of the high-temperature radiator, the working efficiency of the air source heat pump is improved, the service life of the air source heat pump is prolonged, the system operation cost is effectively reduced by utilizing solar energy, and the solar heat pump can be widely applied to heating transformation of clean energy in cold regions. The technical scheme provided by the invention is energy-saving, environment-friendly, pollution-free, flexible and convenient to operate, safe and reliable, and has stronger pertinence, practicability and popularization value.
Drawings
Fig. 1 is a schematic structural diagram of a solar energy and air energy hybrid heat pump system suitable for heating a high-temperature radiator according to an embodiment of the present invention.
Wherein the reference numerals are: 1. an air source heat pump; 2. a full glass vacuum tube type solar heat collector; 3. a phase change energy storage module; 4. a high temperature water source heat pump; 5. a solar heat collection circulating pump; 6. a heat source side circulation pump; 7. a heat supply circulating pump; 8. a high temperature radiator.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the solar energy and air energy compound heat pump system and the working method thereof provided by the present invention will be described in detail below with reference to the accompanying drawings.
Example one
Fig. 1 is a schematic structural diagram of a solar energy and air energy hybrid heat pump system suitable for heating a high-temperature radiator according to an embodiment of the present invention. As shown in fig. 1, the solar energy and air energy composite heat pump system suitable for heating of a high-temperature radiator provided in this embodiment mainly comprises an all-glass vacuum tube type solar heat collector 2, an air source heat pump 1, a phase change energy storage module 3 and a water source heat pump, in this embodiment, solar energy is used as a first heat source, low-temperature heat energy is prepared by the all-glass vacuum tube type solar heat collector 2, and is stored in the phase change energy storage module 3 through a heat exchange coil. In the embodiment, air energy is used as a second heat source, low-temperature heat energy is prepared through the air source heat pump 1, and the low-temperature heat energy is stored in the phase change energy storage module 3 through a circulating medium. The phase change energy storage module 3 plays a role in storing low-temperature heat energy and stabilizing the working condition of the high-temperature water source heat pump 4, the high-temperature water source heat pump 4 promotes the low-temperature heat energy stored in the phase change energy storage module 3 into high-temperature heat energy through a compressor, and hot water with the temperature of 65-70 ℃ at most is prepared and used for heating a high-temperature radiator 8 in a building. The technical scheme provided by the embodiment not only improves the working efficiency of the air source heat pump 1 and prolongs the service life of the air source heat pump 1, but also effectively reduces the system operation cost by utilizing solar energy on the premise of meeting the heating requirement of the high-temperature radiator 8, and can be widely applied to heating transformation of clean energy in cold regions.
the phase change energy storage module 3 provided by this embodiment is filled with a large number of PE energy storage rods which are packaged and have a certain gap, besides the heat exchange coil, and these PE energy storage rods contain a phase change heat storage material. When the compound heat pump system supplies heat, the heat source side circulating pump 6 is started, and circulating media sequentially flow through the air source heat pump 1, the phase change energy storage module 3 and the high-temperature water source heat pump 4. Preferably, the circulating medium is water. The solid-liquid conversion phase-change temperature of the phase-change heat storage material arranged in the phase-change energy storage module 3 is 20 ℃, the phase-change heat storage material is used as equipment for improving the efficiency of the air source heat pump 1 and stabilizing the working condition of the high-temperature water source heat pump 4, the composite heat pump system is in a self-ecological running mode, heat is stored when the water outlet temperature of the air source heat pump 1 is higher than the solid-liquid conversion phase-change temperature of the phase-change material, and heat is released when the water outlet temperature of the air source heat pump 1 is lower than. The air source heat pump 1 controls the start and stop of the equipment according to the temperature of the inlet water, when the temperature of the inlet water is lower than 10 ℃, all phase change materials in the phase change energy storage module 3 are converted from liquid to solid, the stored latent heat is fully released, and the air source heat pump 1 is started; and (3) until the temperature of the inlet water rises to 25 ℃, the phase-change materials in the phase-change energy storage module 3 are completely changed from solid state to liquid state, latent heat is filled again, and the air source heat pump 1 stops working. The technical scheme provided by the embodiment is energy-saving, environment-friendly, pollution-free, flexible and convenient to operate, safe and reliable, and has strong pertinence, practicability and popularization value.
The phase change energy storage module 3 that this embodiment provided is jar form design, and the level is placed, and the inside of phase change energy storage module 3 uses red copper heat transfer coil to set up along the inner wall of jar with the journey group. The energy storage rods are densely distributed in the phase change energy storage module 3 at intervals of 3-5cm through the support, the energy storage rods are made of PE pipes with good heat conductivity, expansibility and corrosion resistance, two ends of the energy storage rods are packaged, the energy storage rods are filled with phase change materials with solid-liquid conversion phase change temperature of 20 ℃, and the filling rate of the phase change materials is 94-97%. The interfaces of the phase-change energy storage module 3 connected with the solar heat collector are both positioned above the tank body, and the mode of bottom-in and top-out is adopted for the pipeline connection of the phase-change energy storage module 3 with the air source heat pump 1 and the water source heat pump.
The all-glass vacuum tube type solar thermal collector 2 provided by the embodiment adopts an antifreeze as a circulating medium, a selective heat absorption coating sprayed on the inner wall and the outer wall of a vacuum tube continuously absorbs solar radiation energy, the solar energy is converted into heat energy to be stored in the circulating medium of the all-glass vacuum tube type solar thermal collector 2, when the temperature T of the circulating medium of the all-glass vacuum tube type solar thermal collector 2 reaches 35 ℃, a solar heat collection circulating pump 5 is started, the heat is transferred to a phase change energy storage module 3 through a heat exchange coil in the phase change energy storage module 3 until the temperature of the circulating medium of the all-glass vacuum tube type solar thermal collector 2 is reduced to 25 ℃, and the solar heat collection circulating pump 5 stops running. Because the operation temperature of the circulating medium of the heat collector system is lower, the heat loss of the system is lower, and the utilization efficiency of the Taiyuan energy is effectively improved.
the energy storage equipment of the heat source side circulation system provided by the embodiment is the phase change energy storage module 3, and a large number of PE energy storage rods which are packaged and keep a certain gap are filled in the phase change energy storage module 3 except for the heat exchange coil. When the compound heat pump system supplies heat, the heat source side circulating pump 6 is started, and circulating media sequentially flow through the air source heat pump 1, the phase change energy storage module 3 and the high-temperature water source heat pump 4.
in this embodiment, the phase-change heat storage material of the phase-change energy storage module 3 has a solid-liquid conversion phase-change temperature of 20 ℃, is used as a device for improving the efficiency of the air source heat pump 1 and stabilizing the working condition of the high-temperature water source heat pump 4, and is in a self-ecological operation mode in the composite heat pump system, and stores heat when the outlet water temperature of the air source heat pump 1 is higher than the solid-liquid conversion phase-change temperature of the phase-change material, and releases heat when the outlet water temperature of the air source heat pump 1 is lower than the solid.
the air source heat pump 1 provided by the embodiment controls the start and stop of the equipment according to the temperature of inlet water, when the temperature of the inlet water is lower than 10 ℃, all phase-change materials in the phase-change energy storage module 3 are changed from liquid to solid, the stored latent heat is fully released, and the air source heat pump 1 is started; and (3) until the temperature of the inlet water rises to 25 ℃, the phase-change materials in the phase-change energy storage module 3 are completely changed from solid state to liquid state, latent heat is filled again, and the air source heat pump 1 stops working.
According to the peak-valley electricity price policy, the characteristics that the electricity price is low in the valley section at night and the efficiency of the flat-section electric air source heat pump 1 is high are fully utilized, the phase change energy storage module 3 is properly added, the heat storage capacity is enlarged, and the operation cost can be effectively reduced.
Before heating begins, the composite heat pump system provided by the embodiment starts the heat supply circulating pump 7, sets the water supply temperature of the high-temperature water source heat pump 4, and heats the building through the high-temperature radiator 8 at the tail end, wherein the water supply temperature of the high-temperature water source heat pump 4 can reach 65-70 ℃ at most.
In order to achieve the above purpose, the present embodiment needs to modify the air source heat pump 1 and the phase change energy storage module 3 as follows: (1) the control system of the air source heat pump 1 is changed to be started when the water inlet temperature is 15 ℃ and stopped when the water inlet temperature is 25 ℃, the water outlet temperature is not higher than 35 ℃, the compression ratio of the compressor is reduced by reducing the water inlet and outlet temperatures of the equipment, the operation efficiency of the equipment can be improved, and the service life is prolonged. (2) The interior of the phase change energy storage module 3 adopts red copper heat exchange coil pipes which are densely arranged in groups through the water distributing and collecting device, so that the heat conductivity coefficient can be improved, and the medium resistance can be reduced; the energy storage rod is made of PE material with good heat conductivity, expansibility and corrosion resistance, two ends of the energy storage rod are packaged, a phase-change material with a solid-liquid conversion phase-change temperature of 20 ℃ is filled inside the energy storage rod, and the filling rate is 94-97%. (3) The refrigerant of the air source heat pump 1 is R410A to meet the low ambient temperature working condition, and the refrigerant of the water source heat pump is R134a to meet the high outlet water temperature working condition.
In the embodiment, the building area of a highway toll station in the western and Shanxi provinces is 3056 square meters, the lowest outdoor temperature is-22 ℃ in winter, the heating period is 6 months, a coal-fired boiler is used for heating in winter, and cast iron heating radiators are arranged at the tail ends of indoor heat supply. In the embodiment, a machine room is improved, a solar energy and air energy composite heat pump system suitable for heating of a high-temperature radiator is adopted, the maximum heating capacity is designed to be 238.37kW, the solar heat supply guarantee rate is 45%, 72 solar heat collectors are arranged, and the heat collection area of each solar heat collector is 4.0 square meters; the number of the air source heat pumps 1 is 2, the temperature of an environment wet bulb is-20 ℃, and the heating capacity of a single air source heat pump is 85.8kW when the temperature of outlet water is 30 ℃; 3 phase-change energy storage modules 3 are used, the phase-change temperature is 22 ℃, and the heat storage capacity of a single phase-change energy storage module is 250 kWh; 1 screw type high-temperature water source heat pump 4 units, wherein the heating capacity is 247.2kW when the water source side inlet/outlet temperature is 15/10 ℃ and the load side inlet/outlet temperature is 60/65 ℃; the solar heat collection circulating pump 5 is 2 (1 is used and 1 is spare), and the flow rate is 16m3h, the lift is 17.5m, and the input power is 2.2 kW; the heat source side circulation pumps 6 were 2 (1 for 1) and the flow rate was 52m3H, the lift is 19m, and the input power is 4 kW; the heat supply circulating pumps 7 are 2 (1 is used for 1), and the flow rate is 44m3The lift is 28m, and the input power is 5.5 kW.
The place of the highway toll station adopts a general peak-to-valley electricity price policy of industry and commerce: the peak electricity is 8:00-11:00, 18:00-23:00, and the electricity price is 0.8650 yuan/kWh; the flat section electricity is 7:00-8:00, 11:00-18:00, and the electricity price is 0.5971 yuan/kWh; the electricity in the valley section is 0:00-7:00, 23:00-24:00, and the electricity price is 0.3480 yuan/kWh. After the solar energy and air energy composite heat pump heating system provided by the embodiment is modified, the heating effect is good, and the average running cost in the heating period is 5.47 yuan/(m)2Month).
The embodiment provides a solar energy and air energy composite heat pump system suitable for heating of a high-temperature radiator. The technical scheme provided by the embodiment not only improves the working efficiency of the air source heat pump and prolongs the service life of the air source heat pump on the premise of meeting the heating requirement of the high-temperature radiator, but also effectively reduces the system operation cost by utilizing solar energy, and can be widely applied to heating transformation of clean energy in cold areas. The technical scheme provided by the embodiment is energy-saving, environment-friendly, pollution-free, flexible and convenient to operate, safe and reliable, and has strong pertinence, practicability and popularization value.
It will be understood that the above embodiments are merely exemplary embodiments taken to illustrate the principles of the present invention, which is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.
Claims (8)
1. A solar energy and air energy composite heat pump system suitable for heating of a high-temperature radiator is characterized by comprising an air source heat pump, an all-glass vacuum tube type solar heat collector, a phase change energy storage module, a high-temperature water source heat pump, a solar heat collection circulating pump, a heat source side circulating pump, a heat supply circulating pump and the high-temperature radiator;
The air source heat pump is respectively connected with the phase change energy storage module and one end of the heat source side circulating pump, the high-temperature water source heat pump is respectively connected with the phase change energy storage module and the other end of the heat source side circulating pump, one end of the solar heat collection circulating pump is connected with the phase change energy storage module, the other end of the solar heat collection circulating pump is connected with one end of the all-glass vacuum tube type solar heat collector, the other end of the all-glass vacuum tube type solar heat collector is connected with the phase change energy storage module, one end of the heat supply circulating pump is connected with the high-temperature water source heat pump, the other end of the heat supply circulating pump is connected with one end of the high-temperature radiator, and the other end of;
The all-glass vacuum tube type solar heat collector is used for preparing first low-temperature heat energy, and the first low-temperature heat energy is stored in the phase change energy storage module through a heat exchange coil arranged in the phase change energy storage module;
The air source heat pump is used for preparing second low-temperature heat energy, and the second low-temperature heat energy is stored in the phase change energy storage module through a circulating medium;
The phase change energy storage module is used for storing the first low-temperature heat energy and the second low-temperature heat energy and stabilizing the working condition of the high-temperature water source heat pump;
The high-temperature water source heat pump promotes the low-temperature heat energy stored in the phase-change energy storage module into high-temperature heat energy through a compressor.
2. the solar energy and air energy composite heat pump system suitable for heating a high-temperature radiator according to claim 1, wherein the phase-change energy storage module is a horizontally placed tank-shaped structure, and comprises a plurality of energy storage rods, and the energy storage rods are packaged inside the phase-change energy storage module and are kept at a preset distance from each other through a bracket;
The energy storage rod is made of polyethylene, two ends of the energy storage rod are packaged, and a phase change material with a solid-liquid conversion phase change temperature of 20 ℃ is filled in the energy storage rod.
3. The solar-air hybrid heat pump system suitable for heating a high-temperature radiator of claim 2, wherein the phase-change energy storage module further comprises a plurality of heat exchange coils arranged in groups on the same layer along the inner wall of the tank structure.
4. The solar and air hybrid heat pump system suitable for heating a high-temperature radiator according to claim 3, wherein the spacing of the energy storage rods is in the range of 3-5 cm.
5. the solar and air hybrid heat pump system suitable for high-temperature radiator heating according to claim 3, wherein the filling rate of the phase change material is in the range of 94-97%.
6. The solar-air hybrid heat pump system suitable for heating a high-temperature radiator according to claim 3, wherein the heat exchange coil is made of red copper.
7. The solar energy and air energy compound heat pump system suitable for heating of a high-temperature radiator according to claim 1, wherein a connection interface of the phase change energy storage module and the all-glass vacuum tube type solar heat collector is located above a tank body, and the phase change energy storage module is connected with the air source heat pump and the high-temperature water source heat pump through pipelines in a downward-in and upward-out mode.
8. A method for operating a solar and air hybrid heat pump system suitable for heating a high-temperature radiator, wherein the heat pump system comprises the solar and air hybrid heat pump system suitable for heating a high-temperature radiator according to any one of claims 1 to 7, and the method comprises:
when the heat pump system starts to supply heat, the heat source side circulating pump is started, and circulating media sequentially flow through the air source heat pump, the phase change energy storage module and the high-temperature water source heat pump;
when the water outlet temperature of the air source heat pump is higher than the solid-liquid conversion phase-change temperature of the phase-change material, the phase-change energy storage module stores heat;
When the water outlet temperature of the air source heat pump is lower than the solid-liquid conversion phase-change temperature of the phase-change material, the phase-change energy storage module releases heat;
when the temperature of inlet water is lower than 10 ℃, all phase-change materials of the phase-change energy storage module are converted from liquid state to solid state, the phase-change energy storage module releases heat, and the air source heat pump starts to work;
When the temperature of inlet water is higher than 25 ℃, all phase-change materials of the phase-change energy storage module are converted from a solid state to a liquid state, the phase-change energy storage module stores heat, and the air source heat pump stops working.
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