CN103994526A - Cooling and heating system utilizing heat pump air conditioner and solar energy - Google Patents
Cooling and heating system utilizing heat pump air conditioner and solar energy Download PDFInfo
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- CN103994526A CN103994526A CN201410256561.8A CN201410256561A CN103994526A CN 103994526 A CN103994526 A CN 103994526A CN 201410256561 A CN201410256561 A CN 201410256561A CN 103994526 A CN103994526 A CN 103994526A
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Abstract
The invention discloses a cooling and heating system utilizing a heat pump air conditioner and solar energy. The cooling and heating system is characterized by comprising a solar energy unit, a heat pump air conditioner unit, a water tank and a tail end cool and heat supply unit. The solar energy unit comprises a solar heat collector, a water inlet pipeline and a water outlet pipeline, the water inlet pipeline and the water outlet pipeline are connected with the solar heat collector, an electric heat tracing band is arranged on the periphery of the water inlet pipeline and the water outlet pipeline, and the electric heat tracing band is connected with a solar controller. The water inlet pipeline and the water outlet pipeline are respectively provided with a shut-off valve, an electromagnetic valve is arranged at the downstream position of the shut-off valve of the water inlet pipeline, a check valve is arranged at the downstream position of the shut-off valve of the water outlet pipeline, and a solar circulating pump is arranged at the downstream position of the check valve. A heat collector temperature probe is arranged on the solar heat collector, and connected with the solar controller, and the water inlet pipeline and the water outlet pipeline are connected with an air discharge pipe at the tail end of the solar heat collector.
Description
Technical field
The present invention is a kind of cold and heat supply system, and particularly a kind of heat pump air conditioner that uses, for Cooling and Heat Source, heat pump air conditioner and solar energy are thermal source, adopts a kind of cooling/warming system system that uses heat pump air conditioner and solar energy of radiant heating, fan coil cooling.
Background technology
, there is following problem in existing heat pump air conditioner and solar energy cold and heat supply system: 1) can not preferentially utilize solar heating; 2) system amount of stored heat is inadequate, can not effectively supplement cool time heating load deficiency at night in winter; 3) the outer machine of heat pump air conditioner and indoor end are direct-connected, and when continuous heating operation, refrigerant temperature does not increase, and heat pump can not produce enough heats; 4) when heat pump defrost from indoor extraction heat, can cause indoor temperature to decline; 5) the too complicated working pressure water tank of system, cost is high; 6) each end discharge imbalance, the cold and hot maldistribution in each room; 7) cooling and warming conversion is complicated.
From result of use, although heat pump can be-15 DEG C of stable heating, can many heating systems but can not reach normal heating requirement in the time of-5 DEG C.
Summary of the invention
The object of the invention is the problem existing in order to overcome prior art, realize following functions: preferentially use solar-heating; Increasing phase change heat storage material moves on to the heat producing daytime to use evening; Off-premises station and end are controlled respectively, only have supply water temperature to reach just heat supply of end after requirement; Defrost heat uses the amount of stored heat of water pot; End discharge and outer machine are irrelevant, can expand to greatest extent usable floor area; System simultaneous air-conditioning.
For achieving the above object, the present invention is realized by following technical scheme:
Use a cooling/warming system for heat pump air conditioner and solar energy, comprise solar units, heat pump air conditioner unit, water pot and end cold and heat supply unit;
Described solar units comprises: solar thermal collector, the inlet pipeline and the outlet pipeline that are connected with described solar thermal collector, described inlet pipeline and outlet pipeline periphery arrange electric-heating belt, described electric-heating belt connects controller for solar, stop valve is set respectively on described inlet pipeline and outlet pipeline, the stop valve downstream of described inlet pipeline arranges magnetic valve, the stop valve downstream of described outlet pipeline arranges check valve, described check valve downstream arranges solar energy circulating pump, heat collector temp probe is set on described solar thermal collector, described heat collector temp probe connects controller for solar, described inlet pipeline is connected a bleeder pipe with outlet pipeline at the end of described solar thermal collector,
Described heat pump air conditioner unit comprises: the outer machine of heat pump air conditioner, and the outer machine of described heat pump air conditioner connects fluorine water-to-water heat exchanger, and described fluorine water-to-water heat exchanger connects heat pump cycle water pump, described heat pump cycle water pump is connected on the inlet pipeline of described solar units;
Water pot comprises: water pot shell, in described water pot shell, water pot heat-insulation layer is set, described water pot enclosure arranges phase transformation bucket, between described phase transformation bucket and described water pot heat-insulation layer, form water pot inner core, Cooling and Heat Source water inlet, Cooling and Heat Source delivery port, end water return outlet and outlet water at tail end mouth are set on described water pot shell, described Cooling and Heat Source water inlet is communicated with the inlet pipeline of described solar units, and described Cooling and Heat Source delivery port is communicated with the outlet pipeline of described solar units;
Described end cold and heat supply unit comprises wind dish cooling unit and radiant heating unit, and described wind dish cooling unit and radiant heating unit are connected with end water return outlet with the outlet water at tail end mouth of described water pot by pipeline.
Good effect of the present invention is as follows:
1) in system, increase normal pressure water pot, normal pressure water pot is arranged between Cooling and Heat Source and end, makes water and phase change heat storage material carry out rational allocation to the imbalance between different time heat supply and heat radiation, ensures that system heating load is steady;
2) heat pump heating running temperature is lower than solar energy running temperature, and guarantee can preferentially be used solar-heating;
3) in the time that end heat dissipation capacity is greater than heat supply amount and causes water tank temperature too low, temporarily stop end operation, end reruns after water tank temperature raises;
4) radiation tail end heat supply in winter, wet monsoon coiler cooling use same controller, easy to use;
5) water pot is normal pressure water pot, and system unit is few, installs simply, and system cost is low, and control assembly is few.
The present invention preferentially uses solar heating; Can avoid heat dissipation capacity to be greater than heating load and make outside heat pump air conditioner machine in abnormal operating state; Can the integrated operation of heating and cooling; The transfer of heat that produce daytime can be used to night; Use normal pressure water pot to reduce system cost.In sum, the present invention can improve efficiency and the reliability of heat pump air conditioner and solar cold heating system.
Brief description of the drawings
Fig. 1 is one embodiment of the present invention system construction drawing;
Fig. 2 is a kind of embodiment structure chart of water pot of the present invention.
In figure:
1 solar thermal collector 2 bleeder pipes
3 heat collector temp probe 4 electric-heating belts
The outer machine 6 heat pump air conditioner controllers of 5 heat pump air conditioners
7 fluorine water-to-water heat exchanger 8 heat pump cycle pumps
9 system controller 10 fan coils
11 automatic exhaust steam valve 12 Centralized Controllers
13 room controller 14 electric heating valve
15 water collector 16 radiant coil
17 water knockout drum 18,18 ' changes in temperature switching valves
19 magnetic valve 20 check valves
21 end circulating pump 22 phase transformation buckets
Bucket 24 water pot heat-insulation layers in 23 water pots
25 water pot shell 26 solar energy circulating pumps
27 stop valve 28 stop valves
29 magnetic valve 30 check valves
31 controller for solar 32 water pot liquid level gauges
33 overflow pipe 34 heat pump temp probes
35 solar water-temperatures, the 36 end water temperatures probes of popping one's head in
37 outlet water at tail end mouth 38 end water return outlets
39 Cooling and Heat Source delivery port 40 Cooling and Heat Source water inlets
41 water compensating valves
Detailed description of the invention
As shown in Figure 1 and Figure 2, solar units part, be made up of solar thermal collector 1, bleeder pipe 2, heat collector temp probe 3, electric-heating belt 4, magnetic valve 29, solar water-temperature probe 35, solar energy circulating pump 26, check valve 30 and controller for solar 31, water lines connects from Cooling and Heat Source delivery port 39 along above-mentioned path to Cooling and Heat Source water inlet 40.
Heat pump air conditioner unit, is made up of the outer machine 5 of heat pump air conditioner, fluorine water-to-water heat exchanger 7, heat pump cycle water pump 8, heat pump water temperature probe 34 and heat pump air conditioner controller 6, and Cooling and Heat Source delivery port 39 is along above-mentioned path to Cooling and Heat Source water inlet 40.
Water pot part is made up of bucket 23, water pot heat-insulation layer 24, water pot shell 25, phase transformation bucket 22, water pot liquid level gauge 32, overflow pipe 33, Cooling and Heat Source delivery port 39, Cooling and Heat Source water inlet 40, outlet water at tail end mouth 37 and end water inlet 38 in water pot.
Radiant heating part is made up of end circulating pump 21, check valve 20, water knockout drum 17, water collector 15, radiant coil 16, electric heating valve 14, Centralized Controller 12, room temperature controller 13, end water temperature probe 36 and system controller 9, and water lines connects from outlet water at tail end mouth 37 along above-mentioned path to end backwater 38.
Wind disc portion is made up of end circulating pump 21, cold and hot switching valve 18, fan coil 10, automatic exhaust steam valve 11, magnetic valve 19, and water lines connects from outlet water at tail end mouth 37 along above-mentioned path to end backwater 38.
Water compensating valve 41 is connected with the import of solar energy circulating pump 26 with heat pump cycle pump 8.
Controller for solar 31 connects solar water-temperature probe 35, solar energy circulating pump 26, magnetic valve 29, electric-heating belt 4 and heat collector temp probe 3 by control line.Heat pump air conditioner controller 6 connects the outer machine 5 of heat pump air conditioner, heat pump air conditioner water temperature probe 34 and heat pump cycle water pump 8 by control line.System controller 9 connects end water temperature probe 36, end circulating pump 21, cold and hot switching valve 18, magnetic valve 19 and Centralized Controller 12 by control line.Centralized Controller 12 is connected with electric heating valve 14, room temperature controller 13 by control line.Room controller 13 is connected with fan coil 10.
The outer machine 6 of heat pump air conditioner, can be refrigerating and heating simultaneously air-source, source or the outer machine of source air-conditioner water.
Radiant coil 16, can be arranged on ground, also can be arranged on wall or smallpox, can be pipeline coil pipe, also can be capillary network or radiant panel.
Room temperature controller 13 has multiple, and unique correspondence is arranged on fan coil 10 and radiant coil 16 and the corresponding electric heating valve 14 of chummery.
Phase transformation bucket 23 refers to be wrapped in and meets the inorganic or organic phase change material that phase transition temperature requires and be arranged on metal or plastic housing inside.
Centralized Controller 12 can be one or more.
System controller 9 connects end water temperature probe 36, shows water temperature in water pot, controls cold and hot conversion valve, according to supplying hot/cold pattern switch valve position, and controls end circulating pump On/Off.Each room temperature controller connects corresponding fan coil, and is connected to Centralized Controller, and Centralized Controller is connected with the electric heating valve on each path radiation coil pipe, and Centralized Controller is also connected with system controller.
Controller for solar 31 connects solar energy circulating pump 26, heat collector temp probe 3, solar water-temperature probe 35, magnetic valve 29 and electric-heating belt 4.Winter heating, according to the temperature difference of heat collector temp probe 3 and solar water-temperature probe 35, controls solar energy circulating pump 26 and moves, and heat is transferred in water pot from heat collector.
Before the operation of heat pump air conditioner and solar cold heating system, by water intaking valve to water filling in water pot and system.To the pipeline of the solar units higher than overflow pipe 33 and wind dish unit, open solar energy circulating pump 26 and end circulating pump 21 and be full of water.According to water pot liquid level gauge level switch water compensating valve, water level is controlled in proper range.If gone wrong in system, likely can cause water level in pipe to raise, unnecessary water can gush from overflow pipe 33.
In use, system controller 9 should manually be set cold and hot pattern (heating, cooling) to the cooling/warming system of heat pump air conditioner and solar energy.When heat supply, by solar units and heat pump air conditioner combination heat supply, when cooling by heat pump air conditioner cooling.According to the position of the cold and hot switching valve of mode decision.
When heating, the heat that solar units and heat pump air conditioner produce except end radiant coil heat radiation at that time, remainder by the mode that improves water pot coolant-temperature gage and make phase change heat storage material phase transformation thermmal storage in water pot, while being greater than heat supply for dispelling the heat from now on.In the time that heat radiation is greater than heat supply, water tank temperature progressively reduces, and when it is lower than lowest set temperature, end circulating pump 21 is out of service, no longer heat radiation.And the net quantity of heat of the outer machine 5 of heat pump air conditioner and solar thermal collector 1 is all water pot heating.When water tank temperature is during higher than design temperature, heat pump is out of service, and it is unrestricted that solar energy can continue to improve water pot water temperature, ensures that the heat that solar energy produces can store.Namely in water tank temperature: the minimum maintenance temperature of solar energy running temperature > operation of heat pump temperature > phase transformation temperature points >.
When heating, changes in temperature conversion valve 18 switches to hot water, when room controller 13 temperature are during lower than design temperature, open the electric heating valve that room is corresponding, and when having any room temperature controller 13 in the time opening, end circulating pump 21 all can be opened operation, until water tank temperature is too low, till being not suitable for the normal operation of the outer machine of heat pump air conditioner, now end circulating pump 21 is out of service, exceedes design temperature until water tank temperature raises.
When cooling, solar units part is no longer worked.Heat pump air conditioner is in cooling pattern.The outer machine 5 of heat pump air conditioner and heat pump cycle pump 8 turn round, and cold is delivered in water pot, until water tank temperature is lower than design temperature, the outer machine 5 of heat pump air conditioner and heat pump cycle pump 8 are out of service.Thereafter because fan coil cooling can improve water pot water temperature, can cause outdoor machine of air-conditioner and heat pump water pump again to turn round.
When cooling, changes in temperature conversion valve 18 switches to cold water, when room controller 13 temperature are during higher than design temperature, open the corresponding fan coil in room, and in the time having any room controller 13 in unlatching, end circulating pump 21 is all opened and brought into operation.
Controller for solar, heat pump air conditioner controller and system controller are independently, different operational factors should be set respectively and control.
While heating, controller for solar 31, by heat collector and the solar water-temperature temperature difference set, is opened solar energy circulating pump 26 heat is transferred in water pot from solar thermal collector 1.In other seasons, close controller for solar 31, and manual-lock is for water return pipeline, avoids heat to import in tank.
Heat pump air conditioner controller is according to heating or refrigeration mode in winter or use in summer, different water temperatures is set, when heat pump temp probe 34 temperature in tank are during lower than (winter) or higher than (summer) design temperature, bring into operation, heat or cold are imported in tank.
System controller has cooling and warming function is set, and while heating, water is imported to radiant coil, when refrigeration, water is imported to fan coil.In the time having the indoor thermostat design temperature in any one room to be not being met, will output signal arrive system controller, controller is opened end circulating pump 21.If but end water temperature probe 36 is when setting while heating, end circulating pump 21 does not move, until water temperature is moved higher than setting.
Each room controller 13 is connected control with fan coil 10, and transmission of signal is to Centralized Controller 12 and system controller 9 simultaneously.Centralized Controller 12Yu Mei road electric heating valve 14 connects, the unlatching of room controller 13 or close corresponding electric heating valve 14 when correspondence heats.
Radiant heating part, use in the winter time, adopt radiant coil heat supply, adopt cold and hot conversion valve 18 automatic switchover current, hot water in water pot is transported to radiant coil by end circulating pump 21, and row is opened/stopped transport to the electric heating valve of the every path radiation coil pipe of room controller control.
Wind dish cooling part, use in summer, adopt fan coil cooling, adopt cold and hot conversion valve 18 automatic switchover current, cold water in water pot is transported to fan coil by end circulating pump 21, and room controller 13 is controlled blower fan and the water valve of every transportation work style coiler and opened/stop transport row.After end circulation stops, magnetic valve 19 cuts out simultaneously, and the water of fan coil can not be back in water pot.
Heat pump air conditioner unit, in the winter time time, system heats, and heat is delivered to water pot by fluorine water-to-water heat exchanger 7 through heat pump cycle pump 8.At cooling system in summer, cold is delivered to water pot by fluorine water-to-water heat exchanger 7 through heat pump cycle pump 8.
Solar units, winter heating season is greater than while setting numerical value when the heat collector temp probe 3 of solar thermal collector 1 top and solar water-temperature 35 temperature difference of popping one's head in, and solar energy circulating pump 26 moves, and heat is transferred to water pot from solar thermal collector 1.In the time that solar energy circulating pump 26 stops, magnetic valve 29 cuts out simultaneously, and in solar thermal collector 1, water can not be back to water pot.And when night in winter is when low temperature, the outside electric-heating belt 4 of installing of yard piping is worked, prevent from freezing.In the time that do not used summer, close two stop valves (27,28), the water pot containing water at low temperature that solar heat can not enter summer.
Water pot part, core is installed phase transformation bucket 22.In bucket, phase-change material phase transformation temperature points is more than 30 DEG C.The setting running temperature lower (such as 40 DEG C) of the outer machine 5 of heat pump air conditioner will stop after water tank temperature is higher than this design temperature, and solar energy is not limited, can continue to transferring heat in water pot.And the temperature that the outer machine 5 of heat pump air conditioner arranges also can ensure the whole day heat supply of remaining time.Water pot part is in the time of normal work, and supply and return water temperature should be outside heat pump air conditioner in machine 5 normal range of operation, will make like this heating load stable.If return water temperature is too low, can cause the pressure of fluorine in outer machine outside normal range (NR), heating capacity will significantly reduce, and then supply water temperature can not ensure requirement.
In the present invention, use the rationally phase change heat storage material of (as 32 DEG C) of phase transformation temperature points, will ensure like this water pot water temperature stability, can be too not low.On controlling in addition, also set when water tank temperature is during lower than certain numerical value (as 30 DEG C), indoor end water pump is out of service, to allow the heat of the outer machine work generation of heat pump air conditioner all for improving water tank temperature, it is kept in the reasonable scope.
The operation principle of its whole system is as follows:
When winter heating, cold and hot switching valve 18 switches to hot water, uses radiant coil heat supply.The condition that the corresponding electric heating valve 14 of every path radiation coil pipe is opened is that indoor temperature is lower than design temperature.And the condition that end circulating pump 21 is opened is: end water temperature probe 36 is higher than design temperature (as 30 DEG C) and have a room controller 13 at least in opening.
The condition that winter solar energy circulating pump 26 moves is: heat collector temp probe 3 temperature are higher than solar water-temperature 35 temperature (as 8 DEG C) several times of popping one's head in.
The condition of the outer machine operation of heat pump of heat pump air conditioner in winter is: heat pump temp probe 34 temperature are lower than design temperature (as 40 DEG C).And when operation, heat pump cycle pump 8 is opened prior to the outer machine 5 of heat pump air conditioner, and then outside heat pump air conditioner, machine 5 stops.
Under normal mode of operation, when return water temperature is during lower than certain temperature, the outer normally heat supply of machine 5 of heat pump air conditioner, more than therefore water pot should keep a minimum temperature (as 30 DEG C).For preventing the outer machine 5 heating capacity deficiencies of low temperature heat pump air conditioner at night, in water pot, increase phase-transition heat-storage body, the heat that phase-transition heat-storage body stores, than the large several times of the water of same volume, can reduce water pot volume, increases total amount of stored heat.Owing to there being enough accumulation of heats, although the low heat pump air-conditioning heating of temperature at night amount reduces, still can keep certain stablizing to indoor gross heat input.
When outside heat pump air conditioner when machine 5 defrost, from water pot, absorb heat, the coolant-temperature gage in water pot can reduce in the time of defrost, but as for not reducing indoor room temperature.
When summer cooling, cold and hot switching valve 18 switches to cold water, indoor employing fan coil cooling.The condition of each fan coil operation be room temperature higher than design temperature, and the condition that terminal water pump is opened is: have a room temperature controller at least in opening.
When summer cooling, solar units, in manual-lock state, must not circulate to avoid losing the cold in water pot.When summer is no, open magnetic valve 29, owing to there being bleeder pipe, the water in solar thermal collector can be let out in water pot below.
Summer, heat pump outdoor machine of air-conditioner for the condition of cold operation was: heat pump temp probe 31 temperature are lower than design temperature (as 9 DEG C).And when operation, heat pump cycle pump 8 is opened prior to the outer machine 5 of heat pump air conditioner, and then outside heat pump air conditioner, machine 5 stops.
Above-described embodiment is used for illustrative purposes only, and be not limitation of the present invention, the those of ordinary skill in relevant technologies field, without departing from the spirit and scope of the present invention, can also make a variety of changes and modification, therefore all technical schemes that are equal to also belong to category of the present invention.
Claims (9)
1. a cooling/warming system that uses heat pump air conditioner and solar energy, is characterized in that: comprise solar units, heat pump air conditioner unit, water pot and end cold and heat supply unit;
Described solar units comprises: solar thermal collector, the inlet pipeline and the outlet pipeline that are connected with described solar thermal collector, described inlet pipeline and outlet pipeline periphery arrange electric-heating belt, described electric-heating belt connects controller for solar, stop valve is set respectively on described inlet pipeline and outlet pipeline, the stop valve downstream of described inlet pipeline arranges magnetic valve, the stop valve downstream of described outlet pipeline arranges check valve, described check valve downstream arranges solar energy circulating pump, heat collector temp probe is set on described solar thermal collector, described heat collector temp probe connects controller for solar, described inlet pipeline is connected a bleeder pipe with outlet pipeline at the end of described solar thermal collector,
Described heat pump air conditioner unit comprises: the outer machine of heat pump air conditioner, and the outer machine of described heat pump air conditioner connects fluorine water-to-water heat exchanger, and described fluorine water-to-water heat exchanger connects heat pump cycle water pump, described heat pump cycle water pump is connected on the inlet pipeline of described solar units;
Water pot comprises: water pot shell, in described water pot shell, water pot heat-insulation layer is set, described water pot enclosure arranges phase transformation bucket, between described phase transformation bucket and described water pot heat-insulation layer, form water pot inner core, Cooling and Heat Source water inlet, Cooling and Heat Source delivery port, end water return outlet and outlet water at tail end mouth are set on described water pot shell, described Cooling and Heat Source water inlet is communicated with the inlet pipeline of described solar units, described Cooling and Heat Source delivery port is communicated with the outlet pipeline of described solar units, and solar water-temperature probe, heat pump water temperature probe and end water temperature probe are set in described water pot;
Described end cold and heat supply unit comprises wind dish cooling unit and radiant heating unit, and described wind dish cooling unit and radiant heating unit are connected with end water return outlet with the outlet water at tail end mouth of described water pot by pipeline.
2. the cooling/warming system of use heat pump air conditioner according to claim 1 and solar energy, is characterized in that: described water pot is normal pressure.
3. the cooling/warming system of use heat pump air conditioner according to claim 1 and 2 and solar energy, it is characterized in that: described phase transformation bucket is arranged on described water pot center, the organic or inorganic phase-change material that described phase transformation bucket inside is full of, described organic or inorganic phase-change material can take out replacing.
4. the cooling/warming system of use heat pump air conditioner according to claim 1 and solar energy, is characterized in that: described fluorine water-to-water heat exchanger is arranged on outside the outer machine of described heat pump air conditioner, and its form can be board-like, double pipe heat exchanger or shell-and-tube.
5. the cooling/warming system of use heat pump air conditioner according to claim 1 and solar energy, is characterized in that: described solar thermal collector is flat or electron tubes type.
6. the cooling/warming system of use heat pump air conditioner according to claim 1 and solar energy, it is characterized in that: the magnetic valve that described wind dish cooling unit comprises changes in temperature switching valve, is connected by pipeline with described cold and hot switching valve, the fan coil being connected by pipeline with described magnetic valve and be connected to the automatic blow off valve valve air relief of described air blower tube dish end.
7. the cooling/warming system of use heat pump air conditioner according to claim 6 and solar energy, is characterized in that: described air blower tube dish can have one or more, and wherein described in each, air blower tube dish connects a room controller.
8. the cooling/warming system of use heat pump air conditioner according to claim 1 and solar energy, it is characterized in that: described radiant heating part comprises: end circulating pump, be arranged on the check valve in described end circulating pump downstream, be arranged on the changes in temperature switching valve in described check valve downstream, described changes in temperature switching valve downstream connects water knockout drum, described water knockout drum connects radiant coil, and described radiant coil connects water collector, and described radiant tube coil pipe connects electric heating valve on road.
9. the cooling/warming system of use heat pump air conditioner according to claim 8 and solar energy, is characterized in that: described radiant coil is floor coil pipe, capillary network or furred ceiling or metope radiant panel.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410256561.8A CN103994526A (en) | 2014-06-11 | 2014-06-11 | Cooling and heating system utilizing heat pump air conditioner and solar energy |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410256561.8A CN103994526A (en) | 2014-06-11 | 2014-06-11 | Cooling and heating system utilizing heat pump air conditioner and solar energy |
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| CN103994526A true CN103994526A (en) | 2014-08-20 |
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| CN201410256561.8A Pending CN103994526A (en) | 2014-06-11 | 2014-06-11 | Cooling and heating system utilizing heat pump air conditioner and solar energy |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108150706A (en) * | 2017-12-26 | 2018-06-12 | 天津中净环境技术有限公司 | A kind of geothermal heat pump air-conditioning system conversion valve |
| CN110762658A (en) * | 2018-11-28 | 2020-02-07 | 西南科技大学 | Solar energy combined cooling and heating dual-connection dual-supply system and control method thereof |
| CN112728630A (en) * | 2020-12-29 | 2021-04-30 | 哈尔滨工业大学 | Integrated heat supply system and heat supply method |
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| JPS5491838A (en) * | 1977-12-29 | 1979-07-20 | Matsushita Electric Works Ltd | Hot water heating device |
| CN102155818A (en) * | 2011-03-21 | 2011-08-17 | 刘季林 | Low-temperature floor radiation heating and refrigerating system device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108150706A (en) * | 2017-12-26 | 2018-06-12 | 天津中净环境技术有限公司 | A kind of geothermal heat pump air-conditioning system conversion valve |
| CN108150706B (en) * | 2017-12-26 | 2019-07-05 | 天津中净环境技术有限公司 | A kind of geothermal heat pump air-conditioning system conversion valve |
| CN110762658A (en) * | 2018-11-28 | 2020-02-07 | 西南科技大学 | Solar energy combined cooling and heating dual-connection dual-supply system and control method thereof |
| CN112728630A (en) * | 2020-12-29 | 2021-04-30 | 哈尔滨工业大学 | Integrated heat supply system and heat supply method |
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Application publication date: 20140820 |