CN107062698B - A kind of efficient direct expanding solar heating pump couples heating system with water resource heat pump - Google Patents

A kind of efficient direct expanding solar heating pump couples heating system with water resource heat pump Download PDF

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Publication number
CN107062698B
CN107062698B CN201611225325.5A CN201611225325A CN107062698B CN 107062698 B CN107062698 B CN 107062698B CN 201611225325 A CN201611225325 A CN 201611225325A CN 107062698 B CN107062698 B CN 107062698B
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heat
solar
pump
water
system
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CN201611225325.5A
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Chinese (zh)
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CN107062698A (en
Inventor
毕海洋
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大连葆光节能空调设备厂
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Classifications

    • 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
    • F25B30/00—Heat pumps
    • F25B30/06—Heat pumps characterised by the source of low potential heat
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S50/00—Arrangements for controlling solar heat collectors
    • F24S50/20—Arrangements for controlling solar heat collectors for tracking
    • 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
    • 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
    • F25B30/00—Heat pumps
    • F25B30/02—Heat pumps of the compression type
    • 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
    • F25B49/00—Arrangement or mounting of control or safety devices
    • F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plant or systems
    • 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
    • Y02E10/47—Mountings or tracking

Abstract

A kind of efficient direct expanding solar heating pump couples heating system with water resource heat pump.It is characterized by: adjusting the angle of solar thermal collector in real time using full-automatic sun tracking device, makes sunlight vertical irradiation to solar thermal collector, obtain maximum solar energy；Direct expanding solar heating pump system maintains refrigerant evaporating temperature in a certain range, to substantially reduce influence of the variation to system stability of solar radiation intensity by setting phase transition heat accumulation unit；Storage can be carried out to the sun by hot water storage tank, and agency water is preheated, so that the heat that direct expanding solar heating pump system is produced effectively is passed to heat user, and then completes the efficient coupling of solar energy heating, heat storage technology and water resource heat pump.Benefit and effect of the invention is to efficiently solve the intermittence and instability problem that solve solar energy resources, and the system of ensure that can stablize energy supply, greatly improve system performance, high-efficiency environment friendly.

Description

A kind of efficient direct expanding solar heating pump couples heating system with water resource heat pump

Technical field

The invention belongs to technical field of energy utilization, it is related to a kind of efficient direct expanding solar heating pump and water resource heat pump coupling Close heating system.

Background technique

The utilization of the Cooling and Heat Sources such as sewage, seawater, underground water can alleviate the situation of current energy shortage, have good Energy-saving effect, environmental benefit and economic benefit, will save freshwater resources increasingly in short supply, open up new field for using energy source, A new thinking is provided using water resource comprehensively to be comprehensive.Solar energy is inexhaustible, is clean renewable energy Source.China has a vast territory, and solar energy resources are very rich.Solar radiation has dispersibility, and heat collector is collection solar energy, and will The equipment for being converted into thermal energy, the performance of heat collector directly affects the quality for the solar energy being collected into.Meanwhile solar radiation variations It with randomness, is needed in conjunction with other heat sources when in use, to guarantee that system can stablize energy supply.Heat pump system is a kind of property The superior cooling supply heating system of energy, in conjunction with solar energy, the two help each other can further increase energy-saving effect.Direct-expansion type Solar heat collector and evaporator with heat pump are combined into one by solar heat pump, combine solar energy utilization technique and heat pump energy-conserving skill The advantages of art, can significantly improve the evaporating temperature and COP value of system.Therefore, by high performance heat collector and heat pump system phase It is used for building air conditioning field in conjunction with the solar energy heat pump system of composition, building energy consumption can be effectively reduced, adjust China's energy knot Structure a, it has also become hot spot of current solar utilization technique research.

At present solve solar energy resources intermittence and instability problem, how to research and develop efficient solar energy heating, Heat storage technology carries out coupling the bottleneck as promoting and applying with water resource heat pump.

Summary of the invention

In previous direct expanding solar heating pump system, the effect of regenerative apparatus is that storage refrigerant is put in condensation process Heat out, and present invention aims at, using full-automatic sun tracking device, the angle of solar thermal collector is adjusted in real time, Make sunlight vertical irradiation to solar thermal collector, obtain maximum solar energy, and in direct expanding solar heating pump system The middle solar radiation energy for increasing phase transition heat accumulation unit storage refrigerant and directly absorbing, in a certain range due to phase transition temperature, Refrigerant temperature after flowing through regenerative apparatus can also maintain in corresponding range, achieve the purpose that maintain evaporating temperature, thus Guarantee solar heat pump stablizes energy supply；Simultaneously the direct expanding solar heating pump system hot water producing out by hot water storage tank into Row storage, and intermediary's water of water resource heat pump is preheated, to achieve the purpose that efficiently to utilize solar energy.

The present invention is achieved by the following technical solutions, and whole system is by water pump (1), automatic pollution removing device (2), changes Hot device (3), return pipe (4), intermediary's water-circulating pump (5), hot water storage tank (6), full-automatic sun tracking device (7), electronic expansion Valve (8), solar thermal collector (9), control valve A (10), control valve B (11), phase transition heat accumulation unit (12), compressor (13), water The composition such as source heat pump unit (14), user side circulating pump (15), heat user (16).Whole system is broadly divided into three cyclic systems System: efficient direct expanding solar heating pump system, low level Cooling and Heat Source water circulation system and intermediary's water circulation system etc..

Efficient direct expanding solar heating pump system: it utilizes full-automatic sun tracking device (7), adjusts solar energy heating in real time The angle of device (9) makes sunlight vertical irradiation to solar thermal collector (9), obtains maximum solar energy；Refrigerant passes through Solar thermal collector (9) absorbs solar energy, sequentially enters phase transition heat accumulation unit (12), compressor (13), hot water storage tank (6), electricity Sub- expansion valve (8), completes a closed circuit, and refrigerant completes heat absorption, heat exchange, by compression, heat release, throttling in the circuit Cyclic process, the water in final hot water storage tank absorbs the heat that refrigerant is released, and heat storage is got up.According to solar radiation The size of intensity, direct expanding solar heating pump system running pattern share Three models:

Heat supply mode

When solar radiation intensity is suitble to, control valve A (10) is opened, and control valve B (11) is closed, and system does not need to open Phase transition heat accumulation unit (12), refrigerant are directly entered compressor (13) by solar thermal collector (9) and are compressed into high temperature and pressure The laggard people's hot water storage tank (6) of gas condenses heat release.

Accumulation of heat mode

When solar radiation intensity is very high, control valve A (10) is closed, and control valve B (11) is opened, and system is opened phase transformation and stored The temperature of thermal (12), the refrigerant flowed out at this time by solar thermal collector (9) is excessively high and has the higher degree of superheat, if directly It taps into compressor (13), compressor (13) can be adversely affected, filled before flowing into compressor (13) by phase-transition heat-storage (12) accumulation of heat is set, evaporating temperature can be made to be maintained at certain temperature.

Heat release mode

When solar radiation intensity is relatively low, refrigerant evaporating temperature is reduced, and system performance reduces, at this time phase-transition heat-storage Device (12) is released to refrigerant for heat is stored, and refrigerant temperature can be made to increase, and improves evaporating temperature, and then improve system Performance.The circulation route of the method for operation and refrigerant is with accumulation of heat mode, and only the working condition of phase transition heat accumulation unit (12) is to put Heat.

Low level Cooling and Heat Source water circulation system: the water body of low level Cooling and Heat Source is pumped into automatic pollution removing device (2) by water pump (1), Dirty sundries is removed；Filtered water enters heat exchanger (3) and exchanges heat with intermediary water, drains after heat exchange through return pipe (4).

Intermediary's water circulation system: intermediary's water extracts low level under the driving of intermediary's water-circulating pump (5), into heat exchanger (3) Then heat in Cooling and Heat Source water body is further heated by hot water storage tank (6), subsequently into water source heat pump units (14) Evaporator heat is discharged, thus complete one circulation.Water source heat pump units (14), which are produced, to be passed through with the high-temperature water of heat supply User side circulating pump (15) is admitted to heat user (16) and carries out heat supply.

Compared with former existing technology, the present invention has substantive distinguishing features and significant progress, utilizes in the present invention complete Automatic sun tracking device adjusts the angle of solar thermal collector in real time, makes sunlight vertical irradiation to solar thermal collector, obtain Obtain maximum solar energy；Direct expanding solar heating pump system makes refrigerant evaporating temperature by setting phase transition heat accumulation unit It maintains in a certain range, to substantially reduce influence of the variation to system stability of solar radiation intensity；Pass through storage Boiler can be carried out storage to the sun, and agency water is preheated, thus the heat that direct expanding solar heating pump system is produced Amount effectively passes to heat user, and then completes the efficient coupling of solar energy heating, heat storage technology and water resource heat pump.Benefit of the invention Place is to efficiently solve the intermittence and instability problem that solve solar energy resources with effect, and the system of ensure that can stablize confession Can, greatly improve system performance, high-efficiency environment friendly.

Detailed description of the invention

Fig. 1 is the invention patent schematic illustration.

In figure: by 1 water pump, 2 automatic pollution removing devices, 3 heat exchangers, 4 return pipes, 5 intermediary's water-circulating pumps, 6 hot water storage tanks, 7 Full-automatic sun tracking device, 8 electric expansion valves, 9 solar energy heatings (evaporation) device, 10 control valve A, 11 control valve B, 12 phase transformations Regenerative apparatus, 13 compressors, 14 water source heat pump units, 15 user side circulating pumps, 16 heat users

Specific embodiment

A specific embodiment of the invention is described in detail below in conjunction with attached drawing and technical solution:

As shown in Figure 1, refrigerant absorbs solar energy by solar thermal collector (9), phase transition heat accumulation unit is sequentially entered (12), compressor (13), hot water storage tank (6), electric expansion valve (8), complete a closed circuit, are finally stored in solar energy In hot water storage tank (6).The water body of low level Cooling and Heat Source is pumped into automatic pollution removing device (2) by water pump (1), and dirty sundries is removed；It crosses Water after filter enters heat exchanger (3) and exchanges heat with intermediary water.Intermediary's water is under the driving of intermediary's water-circulating pump (5), into changing Hot device (3) extracts the heat in low level Cooling and Heat Source water body, is then further heated by hot water storage tank (6), subsequently into water Evaporator in source heat pump unit (14) discharges heat, to complete a circulation.Water source heat pump units (14) produce high temperature Water is admitted to heat user (16) by user side circulating pump (15) and carries out heat supply.

Claims (2)

1. a kind of efficient direct expanding solar heating pump couples heating system with water resource heat pump, including is filled by water pump (1), automatic pollution removing Set (2), heat exchanger (3), return pipe (4), intermediary's water-circulating pump (5), hot water storage tank (6), full-automatic sun tracking device (7), Electric expansion valve (8), solar thermal collector (9), control valve A (10), control valve B (11), phase transition heat accumulation unit (12), compressor (13), water source heat pump units (14), user side circulating pump (15), heat user (16) etc. form,
It is characterized by: adjusting the angle of solar thermal collector in real time using full-automatic sun tracking device, keeping sunlight vertical It is irradiated to solar thermal collector, obtains maximum solar energy；Increase phase-transition heat-storage in direct expanding solar heating pump system The solar radiation energy that device storage refrigerant directly absorbs, guarantee solar heat pump stablizes energy supply；The direct-expansion type sun simultaneously The hot water that energy heat pump system is produced out is stored by hot water storage tank, and is preheated to intermediary's water of water resource heat pump, from And achieve the purpose that efficiently to utilize solar energy；
Water pump (1) is successively connect with automatic pollution removing device (2), heat exchanger (3) with return pipe (4) by pipeline；
Intermediary's water-circulating pump (5) is successively connect with heat exchanger (3), hot water storage tank (6) with water source heat pump units (14) by pipeline；
Electric expansion valve (8) is divided into two branches, branch by piping connection solar thermal collector (9), solar thermal collector (9) One is sequentially connected control valve B (11) and setting control valve A (10) on phase transition heat accumulation unit (12), branch two, after two branches converge Compressor (13) and hot water storage tank (6) are sequentially connected by pipeline；Full-automatic sun tracking device (7) and solar thermal collector (9) it is connected；
User side circulating pump (15) is successively connect with water source heat pump units (14) with heat user (16) by pipeline.
2. efficient direct expanding solar heating pump according to claim 1 couples heating system with water resource heat pump, therein straight Expanding solar heat-pump system, which is characterized in that according to the size of intensity of solar radiation, direct expanding solar heating pump realizes three kinds Operational mode,
1. heat supply mode:
When solar radiation intensity is suitble to, control valve A (10) is opened, and control valve B (11) is closed, and system does not need to open phase transformation Regenerative apparatus (12), refrigerant are directly entered the gas that compressor (13) is compressed into high temperature and pressure by solar thermal collector (9) Laggard people's hot water storage tank (6) condenses heat release；
2. accumulation of heat mode:
When solar radiation intensity is very high, control valve A (10) is closed, and control valve B (11) is opened, and system opens phase-transition heat-storage dress Set (12), the temperature by the refrigerant of solar thermal collector (9) outflow is excessively high and have the higher degree of superheat at this time, if directly into Enter compressor (13), compressor (13) can be adversely affected, phase transition heat accumulation unit is passed through before flowing into compressor (13) (12) accumulation of heat can make evaporating temperature be maintained at certain temperature；
3. Heat release mode:
When solar radiation intensity is relatively low, refrigerant evaporating temperature is reduced, and system performance reduces, at this time phase transition heat accumulation unit (12) storage heat is released to refrigerant, refrigerant temperature can be made to increase, improve evaporating temperature, and then improve systematicness Energy；The circulation route of the method for operation and refrigerant is with accumulation of heat mode, and only the working condition of phase transition heat accumulation unit (12) is heat release.
CN201611225325.5A 2016-12-27 2016-12-27 A kind of efficient direct expanding solar heating pump couples heating system with water resource heat pump CN107062698B (en)

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