CN105783278A - Fluorine pump and heat pump composite heat-accumulation type direct expansion type solar water heating system - Google Patents
Fluorine pump and heat pump composite heat-accumulation type direct expansion type solar water heating system Download PDFInfo
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- CN105783278A CN105783278A CN201610246592.4A CN201610246592A CN105783278A CN 105783278 A CN105783278 A CN 105783278A CN 201610246592 A CN201610246592 A CN 201610246592A CN 105783278 A CN105783278 A CN 105783278A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 105
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 title claims abstract description 48
- 229910052731 fluorine Inorganic materials 0.000 title claims abstract description 48
- 239000011737 fluorine Substances 0.000 title claims abstract description 48
- 238000010438 heat treatment Methods 0.000 title claims abstract description 34
- 239000002131 composite material Substances 0.000 title claims abstract description 12
- 238000009825 accumulation Methods 0.000 title claims description 24
- 239000003507 refrigerant Substances 0.000 claims abstract description 27
- 230000008859 change Effects 0.000 claims abstract description 23
- 230000005855 radiation Effects 0.000 claims abstract description 22
- 238000005338 heat storage Methods 0.000 claims abstract description 17
- 239000007788 liquid Substances 0.000 claims abstract description 12
- 238000001704 evaporation Methods 0.000 claims abstract description 10
- 239000012530 fluid Substances 0.000 claims description 33
- 239000006200 vaporizer Substances 0.000 claims description 28
- 230000007704 transition Effects 0.000 claims description 22
- 238000005086 pumping Methods 0.000 claims description 12
- 239000008236 heating water Substances 0.000 claims description 11
- 230000001105 regulatory effect Effects 0.000 claims description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- 230000005494 condensation Effects 0.000 claims description 6
- 238000009833 condensation Methods 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 6
- 230000009471 action Effects 0.000 claims description 5
- 238000010521 absorption reaction Methods 0.000 claims description 3
- 230000009466 transformation Effects 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims 1
- 238000007906 compression Methods 0.000 claims 1
- 230000008020 evaporation Effects 0.000 abstract description 2
- 230000007774 longterm Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 9
- 230000008901 benefit Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 3
- 230000001737 promoting effect Effects 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
Classifications
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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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S20/00—Solar heat collectors specially adapted for particular uses or environments
- F24S20/40—Solar heat collectors combined with other heat sources, e.g. using electrical heating or heat from ambient air
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B27/00—Machines, plants or systems, using particular sources of energy
- F25B27/002—Machines, plants or systems, using particular sources of energy using solar energy
- F25B27/005—Machines, plants or systems, using particular sources of energy using solar energy in compression type systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/31—Expansion valves
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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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
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
一种氟泵与热泵复合蓄热型直膨式太阳能热水系统，所述系统是由集热蒸发器、氟泵、压缩机、冷凝器水箱、相变蓄热装置、温度传感器、控制器、电动三通阀、膨胀阀、储液罐、电磁阀和截止阀，构成白天太阳能辐射热水系统和夜间太阳能辐射热泵系统。本系统在太阳辐射强度足够时，使用氟泵代替压缩机，热水热量来自太阳能，避免了压缩机长时间运行，延长了压缩机的使用寿命；同时避免了压缩机排气温度过高与系统热负荷不匹配的问题，相比于现有直膨式太阳能热泵热水系统更加安全节能；当太阳辐射强度弱时，系统通过相变蓄热器提高了制冷剂的蒸发温度，有效改善了系统的热泵运行工况，提升了系统的能效比。
A fluorine pump and heat pump composite heat storage type direct expansion solar water heating system, the system is composed of a heat collecting evaporator, a fluorine pump, a compressor, a condenser water tank, a phase change heat storage device, a temperature sensor, a controller, The electric three-way valve, expansion valve, liquid storage tank, solenoid valve and shut-off valve constitute a solar radiant hot water system during the day and a solar radiant heat pump system at night. When the solar radiation intensity is sufficient, the system uses a fluorine pump instead of the compressor, and the heat of the hot water comes from solar energy, which avoids the long-term operation of the compressor and prolongs the service life of the compressor; at the same time, it avoids the high exhaust temperature of the compressor and the system Compared with the existing direct expansion solar heat pump hot water system, it is safer and more energy-efficient than the existing direct expansion solar heat pump hot water system. When the solar radiation intensity is weak, the system increases the evaporation temperature of the refrigerant through the phase change heat accumulator, which effectively improves the system efficiency. The operating conditions of the heat pump improve the energy efficiency ratio of the system.
Description
Technical field
The present invention relates to a kind of solar water heating system, specifically, be a kind of fluorine pump/heat pump combined direct expanding solar heating water system with heat accumulation function.
Background technology
In recent years, prominent along with the aggravation of energy crisis and problem of environmental pollution, solar utilization technique receives much concern in building energy saving field, quickly grows.As the typical solar utilization technique form of one, solar water heating system meets building hot water demand by photothermal deformation process, and energy-saving benefit is notable.But, the poor stability of conventional solar hot water, it is subject to the such environmental effects such as season, weather and day and night temperature.At the overcast and rainy or night that building hot water is in great demand, owing to intensity of solar radiation weakens, the solar energy that heat collector can be collected, seldom even for zero, causes that system cannot meet user's request.Although can promote the stability of solar water heating system by setting up electricity auxiliary heating system, but needing to sacrifice electric energy as cost, economic results in society are relatively poor, and the large scale application in power tense area can be subject to certain restrictions.
In this context, solar heat pump and water heating system, by solar water heating system and heat pump techniques organically being combined, gives full play to the two advantage, it is achieved the round-the-clock running of system, improves the stability of the building hot water supply system well.Solar heat pump and water heating system can be divided into indirect expansion type and two kinds of systems of direct-expansion-type.The heat collector of solar energy hot systems and the vaporizer of heat pump are united two into one by direct-expansion-type solar heat pump and water heating system in function and structure.Cold-producing medium absorbs solar radiation heat in heat collector/evaporator evaporation, after promoting temperature and pressure by compressor compresses, enters condenser and heats hot water for building, returns in heat collector/vaporizer then through expansion valve throttling.Compared with indirect expansion type solar heat pump and water heating system, direct-expansion-type solar heat pump and water heating system decreases the complexity of system equipment, eliminates the heat exchanging process between heat collector and vaporizer simultaneously, improves system energy efficiency and economic benefit.But, direct-expansion-type solar heat pump and water heating system exists the thermic load matching problem of heat collector/between vaporizer and hot-water heating system, has a strong impact on system entirety efficiency.When daytime, intensity of solar radiation was big, Building Heat hydro-thermal load is little, and compressor is in running on the lower load and runs, inefficiency, and system affluence heat is difficult by；At the night in winter of night, especially cold district, causing that evaporating temperature reduces owing to collecting efficiency declines, system COP is decreased obviously, and is even sometimes difficult to meet Building Heat Water l oad demand.Additionally, the compressor in system operates for a long time under Various Complex operating mode, lacking and be effectively protected device, the service life of compressor is greatly reduced.Publication number is that CN200972278Y discloses " a kind of directly expanding solar heat-pump water heater ", by setting up evaporating heat exchanger and water pump system, it is to avoid the longtime running of compressor, improves the operating condition of compressor to a certain extent.But this system does not account for the storage to fine day solar thermal collector on daytime affluence heat, and the prior effective measures that are a lack of improve that system is overcast and rainy or evaporating temperature when night is run, thus promoting the COP of system.Publication number is that CN104654656A discloses " a kind of solar heat pump refrigerating and heating systems "; by introducing phase transition heat accumulation unit, compressor is carried out certain protection; but the problem that can not fundamentally solve compressor longtime running, the ability in improving system conditions is extremely limited equally.
Summary of the invention
The concrete technical problems that the invention solves the problems that is the matching problem of heat collector/vaporizer thermic load and hot water thermal load, effectively store the rich heat of solar thermal collector on daytime and be used for the improvement of night or overcast and rainy compressor operating operating mode, a kind of fluorine pump/heat pump composite heat storage type direct expanding solar heating water system is provided simultaneously.
The technical solution adopted for the present invention to solve the technical problems is as follows.
A kind of fluorine pump and heat pump composite heat storage type direct expanding solar heating water system, including thermal-arrest vaporizer, fluorine pump, compressor, condenser tank, phase transition heat accumulation unit, temperature sensor, controller, electric T-shaped valve, expansion valve, fluid reservoir, electromagnetic valve and stop valve；It is characterized in that: close compressor, open fluorine pump, low temperature liquid cold-producing medium from fluid reservoir flows through stop valve II under fluorine pumping action, thermal-arrest vaporizer absorbs heat, flow through stop valve VI and electric T-shaped valve I, after condenser tank is released heat feedwater heating, again flow back into fluid reservoir；When hot water temperature in condenser tank reaches the temperature needed for domestic hot-water, some refrigerant is made to flow back to fluid reservoir after phase change heat accumulator by the aperture of controller electromagnetic valve for adjusting, the rich heat that thermal-arrest vaporizer absorbs is stored in phase change heat accumulator, constitutes solar radiation hot-water heating system on daytime；
Close fluorine pump, open compressor, after low-temperature refrigerant is flowed through expansion valve reducing pressure by regulating flow by fluid reservoir, flowed in phase change heat accumulator by electric T-shaped valve II, absorb the heat in phase change heat accumulator, and after compressor compresses intensification further, electric T-shaped valve I flow into condensation in condenser tank and release heat to hot water heating, after flow back into fluid reservoir, constitute solar radiation heat pump at night.
In technique scheme, close compressor, stop valve I, expansion valve and electromagnetic valve；Open fluorine pump, stop valve II, stop valve V, stop valve VI, stop valve III and stop valve IV；Controller regulates electric T-shaped valve I simultaneously, cold-producing medium flows along BC direction, regulate electric T-shaped valve II, cold-producing medium flows along EF direction, the high-temperature liquid state cold-producing medium flowed out by thermal-arrest vaporizer flows through stop valve VI and electric T-shaped valve I enters condenser tank condensation heat release, flow through fluid reservoir, stop valve II and fluorine pump afterwards, eventually flow into thermal-arrest vaporizer and absorb heat, cold water flows through stop valve IV and enters condenser tank and heated by the high temperature refrigerant flowing through copper pipe heat exchanger, finally by stop valve III for user.
In technique scheme, the hot water temperature that temperature sensor shows in condenser tank reach domestic water temperature required time, by controller opens electromagnetic valve, make some refrigerant flow through phase change heat accumulator；Close compressor, opens fluorine pump, and the low temperature liquid cold-producing medium from fluid reservoir flows through stop valve II under fluorine pumping action, thermal-arrest vaporizer absorbs heat, flow through stop valve VI and electric T-shaped valve I, after condenser tank is released heat feedwater heating, again flow back into fluid reservoir；When hot water temperature in condenser tank reaches the temperature needed for domestic hot-water, make some refrigerant flow back to fluid reservoir after phase change heat accumulator by the aperture of controller electromagnetic valve for adjusting, the rich heat that thermal-arrest vaporizer absorbs is stored in phase change heat accumulator；
The refrigerant flow flowing through in condenser tank [10] and phase change heat accumulator [12] is distributed by the aperture of electromagnetic valve for adjusting [15], water temperature in condenser tank [10] remains constant, rich heat-collecting capacity is stored in phase change heat accumulator [12] simultaneously, preheats compressor air suction at night and use.
In technique scheme, close fluorine pump, stop valve II, stop valve V and stop valve VI；Open compressor, stop valve I and expansion valve stop valve III and stop valve IV to open and close according to user's use water；Regulate electric T-shaped valve I by controller simultaneously, make cold-producing medium flow along AC direction, regulate electric T-shaped valve II, make cold-producing medium flow along DE direction；Flowed back to by fluid reservoir and the low temperature liquid cold-producing medium of expanded valve reducing pressure by regulating flow flows through phase change heat accumulator, after evaporating absorption heat of transformation intensification, pass through electromagnetic valve and stop valve I, enter compressor and be compressed into the gaseous refrigerant of High Temperature High Pressure, in condenser tank, finally condense heat release；Cold water flows through stop valve IV and enters condenser tank and heated by the high temperature refrigerant flowing through copper pipe heat exchanger, finally by stop valve III for user.
The beneficial effect implementing above-mentioned the provided a kind of fluorine pump of the present invention and heat pump composite heat storage type direct expanding solar heating water system is in that: set up a set of fluorine pumping system and a phase transition heat accumulation unit in traditional direct expanding solar heating pump hot-water heating system.When fine day or intensity of solar radiation are sufficiently high, close compressor system, open fluorine pumping system, system is run under simple solar water heater pattern.Low temperature liquid cold-producing medium absorbs heat in heat collector/vaporizer, releases heat feedwater heating in condenser/water tank.Cold-producing medium completes a complete cycle required drive in pipeline to be provided by fluorine pump, and the energy source of hot water is solar energy.Simultaneously during temperature needed for the hot water temperature in water tank reaches domestic hot-water, make some refrigerant flow through phase transition heat accumulation unit by the aperture of controller electromagnetic valve for adjusting, the rich heat that heat collector absorbs is stored in phase transition heat accumulation unit, it is to avoid the waste of energy.
At night or when rainy weather intensity of solar radiation is weak, closing fluorine pumping system, open compressor assembly, system is run in the heat pump mode.Now, cold-producing medium is no longer flow through vaporizer/solar thermal collector, but by flowing through phase transition heat accumulation unit, enters back into compressor after promoting the evaporating temperature of cold-producing medium, improves the operational efficiency of compressor.Cold-producing medium condenses in condenser/water tank after being compressed intensification further by compressor and releases heat to hot water heating, meets building hot water demand.Cold-producing medium completes a complete cycle required drive in pipeline to be provided by compressor, and the energy source of hot water is essentially from the heat stored in compressor work done and phase transition heat accumulation unit.
Above-mentioned advantage and good effect, compared with prior art, be embodied in following 3 points.
One is relatively conventional direct expanding solar heating pump hot-water heating system, additional a set of fluorine pumping system and regenerative apparatus, system structure advantages of simple.
Two is when intensity of solar radiation is sufficiently high, uses fluorine pumping system to replace compressor assembly.On the one hand the heat needed for hot water all is from solar energy, it is to avoid the long-time fallback of compressor, effectively extends the service life of compressor；On the other hand it can be avoided that the too high problem unmatched with system heat load of compressor exhaust temperature, compared to traditional direct expanding solar heating pump hot-water heating system energy-saving safe more.
Three is that system improves refrigerant evaporating temperature by phase transition heat accumulation unit when intensity of solar radiation is weak, is effectively improved under system heat pump moving model the operating condition of compressor, promotes the Energy Efficiency Ratio of system.
Accompanying drawing explanation
Fig. 1 is the agent structure schematic diagram of the present invention.
Fig. 2 is the operational mode structural representation of solar water heater of the present invention.
Fig. 3 is the solar water heater operational mode structural representation of heat storage state of the present invention.
Fig. 4 is heat pump operation mode structural representation of the present invention.
In figure: 1: electric T-shaped valve I；2: stop valve I；3: compressor；4: thermal-arrest vaporizer；5: fluorine pump；6: stop valve II；7: expansion valve；8: fluid reservoir；9: stop valve III；10: condenser tank；11: stop valve IV；12: phase change heat accumulator；13: electric T-shaped valve II；14: stop valve V；15: electromagnetic valve；16: stop valve VI；17: temperature sensor；18: controller.
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is further described.
Implement the above-mentioned a kind of fluorine pump of the present invention and heat pump composite heat storage type direct expanding solar heating water system, as shown in Figure 1, whole system includes thermal-arrest vaporizer 4, fluorine pump 5, compressor 3, condenser tank 10, phase transition heat accumulation unit 12, temperature sensor 17, controller 18, electric T-shaped valve 1, electric T-shaped valve 13, expansion valve 7, fluid reservoir 8, electromagnetic valve 15 and stop valve I 2, stop valve II 6, stop valve III 9, stop valve IV 11, stop valve V 14 and stop valve VI 16 and constitutes its structure.
Wherein, solar water heating system by fluorine pump 5, thermal-arrest/vaporizer 4, condenser/water tank 10, phase transition heat accumulation unit 12, temperature sensor 17, controller 18, fluid reservoir 8, electric T-shaped valve 1, electric T-shaped valve 13, electromagnetic valve 15 and stop valve II 6, V 14 and VI 16, when being formed in fine day intensity of solar radiation is higher daytime.
By close compressor system, open fluorine pumping system, low temperature liquid cold-producing medium from fluid reservoir 8 flows through stop valve II 6 under fluorine pumping action, thermal-arrest/vaporizer 4 absorbs heat, flow through stop valve VI 16 and electric T-shaped valve 1, after condenser/water tank is released heat feedwater heating, again flow back into fluid reservoir 8；During temperature needed for the hot water temperature in water tank reaches domestic hot-water, some refrigerant is made to flow back to fluid reservoir 8 after phase transition heat accumulation unit 12 by the aperture of controller electromagnetic valve for adjusting 15, the rich heat that heat collector absorbs is stored in phase transition heat accumulation unit, it is to avoid the waste of energy.
And constituted at night by phase transition heat accumulation unit 12, compressor 3, condenser/water tank 10, controller 18, fluid reservoir 8, expansion valve 7, electric T-shaped valve 1, electric T-shaped valve 13, electromagnetic valve 15 and stop valve I 2 or heat pump when the intensity of solar radiation such as rainy weather is weak.By closing fluorine pumping system, open compressor assembly, after low-temperature refrigerant is flowed through expansion valve 7 reducing pressure by regulating flow by fluid reservoir 8, flow into phase transition heat accumulation unit 12 from electric T-shaped valve 13, absorb the heat of phase transition heat accumulation unit, and compress after intensification further through compressor 3, flowed in condenser/water tank by electric T-shaped valve 1, condensation releases heat to hot water heating, meets building hot water demand, finally flows back into fluid reservoir 8.
A kind of fluorine pump of the above-mentioned enforcement of the present invention and heat pump composite heat storage type direct expanding solar heating water system, on the basis of this structure, its work process includes three kinds of mode of operations, as follows respectively:
Solar water heater operational mode as shown in Figure 2.When fine day solar radiation on daytime intensity is higher, close compressor 3, stop valve I 2, expansion valve 7 and electromagnetic valve 15, open fluorine pump 5, stop valve II 6, stop valve V 14, stop valve VI 16.Stop valve III 9 and stop valve IV 11 use the situation of hot water to open and close according to user.The electric T-shaped valve 1 of controller adjustment simultaneously makes cold-producing medium can only flow along BC direction, regulates electric T-shaped valve 13 and cold-producing medium can only be flowed along EF direction.Stop valve VI 16 is flowed through by thermal-arrest/vaporizer 4 high-temperature liquid state cold-producing medium out under this pattern, electric T-shaped valve 1 enters condenser/water tank 10 and condenses heat release, flow through fluid reservoir 8, stop valve II 6, fluorine pump 5 afterwards, eventually pass back to thermal-arrest/vaporizer 4 and absorb heat, complete whole to heat circulation.Cold water flows through stop valve IV 11 entrance water tank and is heated by the high temperature refrigerant flowing through copper pipe heat exchanger, finally by stop valve III 9 for user.
The solar water heater operational mode of heat storage state as shown in Figure 3.When fine day solar radiation intensity is sufficiently high, when the heat-collecting capacity of heat collector is far longer than building hot water demand, it is necessary to rich heat storage is got up, it is to avoid the waste of energy.Carrying out practically pattern is: when temperature sensor 17 show in water tank the temperature of hot water reached domestic water temperature required time, open electromagnetic valve 15 by controller 18 so that some refrigerant flows through phase transition heat accumulation unit 12.It is identical with solar water heater operational mode that all the other run setting.The refrigerant flow flowing through condenser/water tank 10 and phase transition heat accumulation unit 12 is distributed by the aperture of electromagnetic valve for adjusting 15, the water temperature ensured in water tank maintains steady state, rich heat-collecting capacity is stored in phase transition heat accumulation unit simultaneously, at night or when the intensity of solar radiation such as rainy weather is more weak, use as preheating compressor air suction.
Heat pump efficient operating mode as shown in Figure 4.At night or when the intensity of solar radiation such as rainy weather is more weak, closes fluorine pump 5, stop valve II 6, stop valve V 14, stop valve VI 16, open compressor 3, stop valve I 2, expansion valve 7.Stop valve III 9 and stop valve IV 11 use the situation of hot water to open and close according to user.Regulate electric T-shaped valve 1 by controller makes cold-producing medium can only flow along AC direction simultaneously, regulates electric T-shaped valve 13 and cold-producing medium can only be flowed along DE direction.Flowed back to by fluid reservoir 8 under this pattern and the low temperature liquid cold-producing medium of expanded valve 7 reducing pressure by regulating flow is no longer flow through vaporizer/heat collector 14, but first flow through phase transition heat accumulation unit 12, after evaporating absorption heat of transformation intensification, pass through electromagnetic valve 15, stop valve I 2, enter compressor 3 and be compressed into the gaseous refrigerant of High Temperature High Pressure, last in condenser/water tank 10, condense heat release, complete whole to heat circulation.Cold water flows through stop valve IV 11 entrance water tank and is heated by the high temperature refrigerant flowing through copper pipe heat exchanger, finally by stop valve III 9 for user.
In above-mentioned three kinds of mode of operations, the conversion between solar water heater operational mode and heat pump efficient operating mode can manually complete, it is also possible to controls valve switch according to the feedback signal of intensity of solar radiation and water tank leaving water temperature and automatically switches.Conversion between the solar water heater operational mode of solar water heater operational mode and heat storage state then can be automatically performed by controller.When fine day intensity of solar radiation is sufficiently high, controller makes cold-producing medium can only flow along BC direction by regulating electric T-shaped valve 1, regulating electric T-shaped valve 13 makes cold-producing medium can only flow along EF direction, when the hot water temperature in condenser/water tank 10 reaches to distribute, by the aperture of electromagnetic valve for adjusting 15, the refrigerant flow flowing through condenser/water tank and phase transition heat accumulation unit when domestic hot-water is temperature required, thus rich heat storage is got up, it is ensured that the collecting efficiency of heat collector.At night or when the intensity of solar radiation such as rainy weather is more weak, controller regulates electric T-shaped valve 1 and cold-producing medium can only be flowed along AC direction, regulating electric T-shaped valve 13 makes cold-producing medium can only flow along DE direction, and electromagnetic valve for adjusting 15 is in fully opened all the time simultaneously.Heat stored in daytime phase transition heat accumulation unit is utilized fully, promotes system COP.
Claims (4)
1. fluorine pump and a heat pump composite heat storage type direct expanding solar heating water system, including thermal-arrest vaporizer, fluorine pump, compressor, condenser tank, phase transition heat accumulation unit, temperature sensor, controller, electric T-shaped valve, expansion valve, fluid reservoir, electromagnetic valve and stop valve；It is characterized in that:
Close compressor [3], open fluorine pump [5], low temperature liquid cold-producing medium from fluid reservoir [8] flows through stop valve II [6] under fluorine pumping action, thermal-arrest vaporizer [4] absorbs heat, flow through stop valve VI [16] and electric T-shaped valve I [1], after condenser tank [10] is released heat feedwater heating, again flow back into fluid reservoir [8]；When hot water temperature in condenser tank [10] reaches the temperature needed for domestic hot-water, some refrigerant is made to flow back to fluid reservoir [8] after phase change heat accumulator [12] by the aperture of controller [18] electromagnetic valve for adjusting [15], the rich heat that thermal-arrest vaporizer [4] absorbs is stored in phase change heat accumulator [12], constitutes solar radiation hot-water heating system on daytime；
Close fluorine pump [5], open compressor [3], after low-temperature refrigerant is flowed through expansion valve [7] reducing pressure by regulating flow by fluid reservoir [8], flowed in phase change heat accumulator [12] by electric T-shaped valve II [13], absorb the heat in phase change heat accumulator [12], and after through compressor [3], compression heats up further, flowed into condensation in condenser tank [10] by electric T-shaped valve I [1] and release heat to hot water heating, after flow back into fluid reservoir [8], constitute solar radiation heat pump hot-water system at night.
2. fluorine pump as claimed in claim 1 and heat pump composite heat storage type direct expanding solar heating water system, it is characterised in that:
Close compressor [3], stop valve I [2], expansion valve [7] and electromagnetic valve [15]；Open fluorine pump [5], stop valve II [6], stop valve V [14], stop valve VI [16], stop valve III [9] and stop valve IV [11]；Controller [18] regulates electric T-shaped valve I [1] simultaneously, cold-producing medium flows along BC direction, regulate electric T-shaped valve II [13], cold-producing medium flows along EF direction, the high-temperature liquid state cold-producing medium flowed out by thermal-arrest vaporizer [4] flows through stop valve VI [16] and electric T-shaped valve I [1] enters condenser tank [10] condensation heat release, flow through fluid reservoir [8] afterwards, stop valve II [6] and fluorine pump [5], eventually flow into thermal-arrest vaporizer [4] and absorb heat, cold water flows through stop valve IV [11] entrance condenser tank [10] and is heated by the high temperature refrigerant flowing through copper pipe heat exchanger, finally by stop valve III [9] for user.
3. fluorine pump as claimed in claim 1 and heat pump composite heat storage type direct expanding solar heating water system, it is characterised in that:
Temperature sensor [17] show the hot water temperature in condenser tank [10] reach domestic water temperature required time, open electromagnetic valve [15] by controller [18], make some refrigerant flow through phase change heat accumulator [12]；Close compressor [3], open fluorine pump [5], low temperature liquid cold-producing medium from fluid reservoir [8] flows through stop valve II [6] under fluorine pumping action, thermal-arrest vaporizer [4] absorbs heat, flow through stop valve VI [16] and electric T-shaped valve I [1], after condenser tank [10] is released heat feedwater heating, again flow back into fluid reservoir [8]；When hot water temperature in condenser tank [10] reaches the temperature needed for domestic hot-water, make some refrigerant flow back to fluid reservoir [8] after phase change heat accumulator [12] by the aperture of controller [18] electromagnetic valve for adjusting [15], the rich heat that thermal-arrest vaporizer [4] absorbs is stored in phase change heat accumulator [12]；
The refrigerant flow flowing through in condenser tank [10] and phase change heat accumulator [12] is distributed by the aperture of electromagnetic valve for adjusting [15], water temperature in condenser tank [10] remains constant, rich heat-collecting capacity is stored in phase change heat accumulator [12] simultaneously, preheats compressor air suction at night and use.
4. fluorine pump as claimed in claim 1 and heat pump composite heat storage type direct expanding solar heating water system, it is characterised in that:
Close fluorine pump [5], stop valve II [6], stop valve V [14] and stop valve VI [16]；Open compressor [3], stop valve I [2] and expansion valve [7]；Stop valve III [9] and stop valve IV [11] open and close according to user's use water；Regulate electric T-shaped valve I [1] by controller [18] simultaneously, make cold-producing medium flow along AC direction, regulate electric T-shaped valve II [13], make cold-producing medium flow along DE direction；Flowed back to by fluid reservoir [8] and the cryogenic gaseous cold-producing medium of expanded valve [7] reducing pressure by regulating flow flows through phase change heat accumulator [12], after evaporating absorption heat of transformation intensification, pass through electromagnetic valve [15] and stop valve I [2], enter compressor [3] and be compressed into the gaseous refrigerant of High Temperature High Pressure, finally condensation heat release in condenser tank [10]；Cold water flows through stop valve IV [11] entrance condenser tank [10] and is heated by the high temperature refrigerant flowing through copper pipe heat exchanger, finally by stop valve III [9] for user.
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