CN106642789A - Heat-source tower heat pump system capable of realizing comprehensive utilization of solar energy and seasonal energy storage in soil - Google Patents

Heat-source tower heat pump system capable of realizing comprehensive utilization of solar energy and seasonal energy storage in soil Download PDF

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Publication number
CN106642789A
CN106642789A CN201611074701.5A CN201611074701A CN106642789A CN 106642789 A CN106642789 A CN 106642789A CN 201611074701 A CN201611074701 A CN 201611074701A CN 106642789 A CN106642789 A CN 106642789A
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heat
magnetic valve
source tower
pump
soil
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CN106642789B (en
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梁彩华
黄世芳
张小松
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Southeast University
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Southeast University
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B13/00Compression machines, plants or systems, with reversible cycle
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24SSOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S20/00Solar heat collectors specially adapted for particular uses or environments
    • F24S20/40Solar heat collectors combined with other heat sources, e.g. using electrical heating or heat from ambient air
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24TGEOTHERMAL COLLECTORS; GEOTHERMAL SYSTEMS
    • F24T10/00Geothermal collectors
    • F24T10/10Geothermal collectors with circulation of working fluids through underground channels, the working fluids not coming into direct contact with the ground
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B30/00Heat pumps
    • F25B30/06Heat pumps characterised by the source of low potential heat
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00Fluid-circulation arrangements
    • F25B41/20Disposition of valves, e.g. of on-off valves or flow control valves
    • F25B41/22Disposition of valves, e.g. of on-off valves or flow control valves between evaporator and compressor
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00Fluid-circulation arrangements
    • F25B41/30Expansion means; Dispositions thereof
    • F25B41/31Expansion valves
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B43/00Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
    • F25B43/006Accumulators
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24TGEOTHERMAL COLLECTORS; GEOTHERMAL SYSTEMS
    • F24T10/00Geothermal collectors
    • F24T2010/50Component parts, details or accessories
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/10Geothermal energy

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Sustainable Development (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Energy (AREA)
  • Combustion & Propulsion (AREA)
  • Power Engineering (AREA)
  • Analytical Chemistry (AREA)
  • Steam Or Hot-Water Central Heating Systems (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The invention discloses a heat-source tower heat pump system capable of realizing comprehensive utilization of solar energy and seasonal energy storage in soil. The heat-source tower heat pump system comprises a refrigerant loop, a heat-source tower loop, a soil energy storage loop, a solar energy storage loop and a solution regeneration loop. In the mode of direct supply in summer and in winter, cold energy or heat energy stored in soil is supplied to a user directly by means of a buried pipe; in the conventional mode in summer or in winter, a heat-source tower is used as a heat removal device for condensation heat of a heat pump unit or provides a low-grade heat source for an evaporator; in the mode of peak load regulation in summer or in winter, the heat-source tower is connected in series with the buried pipe to form the heat removal device for the condensation heat of the heat pump unit or provide the low-grade heat source for the evaporator; and in the mode of heat storage in a transition season between the summer and the autumn, the condensation heat of the unit and solar energy are stored in soil by means of the buried pipe. By means of the heat-source tower heat pump system, the problems that the installed capacity of the unit of the heat-source tower heat pump system is too high, and the initial investment is increased are solved, the heat pump unit does not need to be started in the initial period of winter and summer, the energy efficiency of the system is improved greatly, and safe and stable operation of the unit is ensured.

Description

Realize that solar energy composite utilizes the heat source tower heat pump system with soil across season energy storage
Technical field
The invention belongs to refrigerated air-conditioning system design and manufacture field, are related to one kind and realize that solar energy composite is utilized and soil Across the heat source tower heat pump system of season energy storage.
Background technology
Traditional building heat and cold sources scheme mainly has three kinds:Handpiece Water Chilling Units add boiler, air source heat pump, water earth source heat pump. Handpiece Water Chilling Units add the scheme Summer and winter of boiler to there is a problem of the idleness of equipment(Summer boiler is idle, winter handpiece Water Chilling Units limit System), and boiler primary energy ratio is relatively low, pollute environment;Air source heat pump is when in the winter time frosting occurs in heating operation, its effect Rate and heat capacity decay serious and affect operation safety, and summer unit refrigerating efficiency is far below water cooled chiller;Water ground Although source heat pump Summer and winter cooling and warming efficiency is higher, it is limited by geographical geological conditions, and serious and initial cost is higher.Thermal source Tower heat pump breaches the limitation of above-mentioned traditional cold heat source plan as a kind of new building heat and cold sources scheme, realizes Winter-summer dual purpose and high efficiency cooling and heating, winter heating is not limited without frosting problem by geographical geological conditions, and initial cost is far low It is a kind of building heat and cold sources scheme with development prospect in water earth source heat pump.
Routine building air-conditioning system is to carry out design selection according to the building peak load under most bad working environments, is thus caused often Rule source pump installed capacity is excessive, causes initial cost to increase, and same problem is there is also to heat source tower heat pump unit, while working as the winter Season outdoor temperature it is relatively low when, building heat supplying workload demand is dramatically increased, and the heat capacity of heat source tower heat pump unit and efficiency with The reduction of air themperature and decline, also exist because moisture in air causes into solution during heat source tower heat pump unit winter operation Solution concentration regeneration issues, solution regeneration generally needs to consume the extra energy, and then affects the overall efficiency of system.Simultaneously It is to reduce building energy demand in combination with the regenerative resources such as solar energy, improves the effective way of air-conditioning system efficiency.Therefore How building air conditioning unit total installation of generating capacity is reduced in the case where worst working condition is met, efficiently solve heat source tower heat pump unit The heat source of solution regeneration, effectively with reference to regenerative resource, improves the annual comprehensive energy efficiency of heat source tower heat pump air-conditioning system, if Counting out a kind of new and effective heat source tower heat pump system becomes those skilled in the art's technical barrier in the urgent need to address.
The content of the invention
Technical problem:The present invention provides a kind of heat source tower heat pump system that solves causes heat pump to be installed because taking into account most bad working environments Capacity is excessive, and causes the problem of systematic function rapid decay with operating ambient temperature decline, while it is molten efficiently to solve unit Liquid regeneration heat source realize solar energy composite using with soil across season energy storage heat source tower heat pump system.The system will too Sun can introduce heat pump type air conditioning system and realize efficient utilization and carry out across season energy storage using soil, so as to realize annual synthesis high energy Effect.
Technical scheme:The a kind of of the present invention realizes that solar energy composite utilizes the heat source tower heat pump system with soil across season energy storage System, including refrigerant loop, heat source tower loop, soil energy storage loop, solar energy accumulation loop, solution regenerative circuit and hot and cold water Loop.Wherein, refrigerant loop include compressor, four-way change-over valve, gas-liquid separator, reservoir, filter, expansion valve, the One check valve, the second check valve, the 3rd check valve, the 4th check valve, First Heat Exchanger, the second heat exchanger.In refrigerant loop, The output end of compressor is connected with four-way change-over valve first input end, and the output end of four-way change-over valve first is freezed with the second heat exchanger Agent side input is connected, the second heat exchanger refrigerant side output end simultaneously with the entrance of the second check valve and going out for the 4th check valve Mouth is connected, while being connected to the entrance of reservoir after the outlet of the second check valve converges with the outlet of the first check valve, the 4th list It is connected with the outlet of the entrance and expansion valve of the 3rd check valve simultaneously to the entrance of valve, the filter is connected in reservoir And expansion valve between, the outlet of the entrance of the first check valve and the 3rd check valve with First Heat Exchanger refrigerant side input phase Even, First Heat Exchanger refrigerant side output end is connected with the input of four-way change-over valve second, the output end of four-way change-over valve second and The entrance of gas-liquid separator is connected, and the outlet of gas-liquid separator is connected with the entrance of compressor, and the First Heat Exchanger is simultaneously The building block of cold and hot water loop, second heat exchanger is simultaneously the building block of heat source tower loop and soil energy storage loop;
Heat source tower loop includes the second heat exchanger, heat source tower, the first pump, the first magnetic valve, the second magnetic valve.Heat source tower loop In, second the second magnetic valve of heat exchanger solution side output end Jing respectively with heat source tower first input end and the input of heat source tower the 3rd It is connected, heat source tower the first magnetic valve of the first output end Jing is connected with the entrance of the first pump, the outlet of the first pump and the second heat exchanger Solution side input is connected;
Soil energy storage loop includes the second heat exchanger, the 3rd heat exchanger, underground pipe, the second pump, the 3rd magnetic valve, the 4th electromagnetism Valve, the 6th magnetic valve, the 7th magnetic valve, the tenth magnetic valve.In soil energy storage loop, the second heat exchanger solution side output end passes through 3rd magnetic valve is connected with the entrance of the second pump, and the output end of heat source tower first also passes through the entrance phase of the 4th magnetic valve and the second pump Even, the 3rd heat exchanger solution side output end is also connected by the 7th magnetic valve with the entrance of the second pump, outlet and the ground of the second pump The entrance of pipe laying is connected, and the outlet of underground pipe is connected by the 6th magnetic valve with the second heat exchanger solution side input, underground pipe Outlet be connected with the 3rd heat exchanger solution side input by the tenth magnetic valve simultaneously, the underground pipe, the second pump are simultaneously Solar energy accumulation loop, the building block of solution regenerative circuit, the 4th magnetic valve is simultaneously the composition of solution regenerative circuit Part, the 7th magnetic valve is simultaneously the building block in solar energy accumulation loop, and the 3rd heat exchanger is hot and cold water simultaneously The building block in loop;
Solar energy accumulation loop include underground pipe, solar heat-collection plate, the second pump, the 5th magnetic valve, the 7th magnetic valve, the 13rd Magnetic valve.In solar energy accumulation loop, the outlet of underground pipe is connected by the 5th magnetic valve with the entrance of solar heat-collection plate, also After being converged by the outlet of the 13rd magnetic valve and solar heat-collection plate, the 3rd heat exchanger solution side output end, the common 7th is electric Magnet valve is connected with the entrance of the second pump, and the solar heat-collection plate, the 5th magnetic valve, the 13rd magnetic valve are simultaneously solution regeneration The building block in loop;
Solution regenerative circuit include underground pipe, solar heat-collection plate, regenerating unit, the second pump, the 3rd pump, the 4th magnetic valve, the Five magnetic valves, the 8th magnetic valve, the 9th magnetic valve, the 13rd magnetic valve.In solution regenerative circuit, the outlet of solar heat-collection plate Separated before being connected with the 7th magnetic valve all the way, be connected with the entrance of regenerating unit by the 8th magnetic valve, regenerating unit Outlet is connected by the 9th magnetic valve with the entrance of the 3rd pump, and the outlet of the 3rd pump is connected with the input of heat source tower second.
Cold and hot water loop includes First Heat Exchanger, the 3rd heat exchanger, the 11st magnetic valve and the 12nd magnetic valve.Hot and cold water In loop, the backwater end of unit is divided into two-way, leads up to the 12nd magnetic valve and is connected with First Heat Exchanger water side input, separately Lead up to the 11st magnetic valve to be connected with the 3rd heat exchanger water side input, First Heat Exchanger water side output end and the 3rd heat exchange Device water side output end is connected with the confession water end (W.E.) of unit.
Further, in present system, heat source tower is when wet-bulb temperature is less than setting value outside summer room, separately as heat The heat release of pumping system condensation heat, when in the winter time outdoor dry-bulb temperature is higher than setting value, the evaporimeter for heat pump is provided Low level heat energy.
Further, in present system, heat source tower and underground pipe are gone here and there when wet-bulb temperature is higher than setting value outside summer room Through transport row, collectively as the heat release of heat pump summer condensation heat, when in the winter time outdoor dry-bulb temperature is less than setting value Series operation, the common evaporimeter for heat pump provides low level heat energy.
Further, in present system, heat source tower quits work at summer Mo, by underground pipe as unit condensation heat Heat release, the condensation heat in the second heat exchanger is stored in soil.
Further, in present system, solar heat-collection plate isolated operation in excessive season compressor emergency shutdown, by the sun Can store in soil, realize using across the season higher temperature accumulation of energy of soil.
Further, in present system, underground pipe is after at the beginning of summer when circulatory mediator therein and soil heat exchange, and it is warm When degree is less than setting value, cold directly will be supplied by user by the 3rd heat exchanger, in the winter time just when circulatory mediator therein and After soil heat exchange, when its temperature is higher than setting value, heat directly will be supplied by user by the 3rd heat exchanger.
Further, in present system, underground pipe and solar heat-collection plate are in the winter time under normal mode and peak regulation pattern Series operation, the common solution regeneration in regenerating unit provides thermal source.
Further, in present system, the distance of embedded pipe of underground pipe is less than 2 meters.
Further, in present system, including at least one heat source tower heat pump unit and at least one heat source tower.
Further, in present system, heat source tower is the heat-exchanger rig of air and solution fluid, specially cross-flow type heat Source tower or adverse current type heat source tower.
Further, in present system, it is equally applicable to the heat being made up of the heat source tower heat pump unit more than Source tower heat pump.
Realize that solar energy composite utilizes the heat source tower heat pump system with soil across season energy storage, its cooling in summer operational mode It is divided into five kinds:Summer direct-furnish pattern, summer normal mode, summer peak regulation pattern, summer accumulation of heat pattern and transition season accumulation of heat mould Formula.
Summer direct-furnish pattern:The refrigeration duty of summer common buildings at the beginning is relatively low, during winter unit by evaporimeter by cold Store among soil so that the soil moisture in underground pipe region is relatively low, now using can after circulatory mediator and soil heat exchange Directly the cold stored in soil is directly output to by user side by the 3rd heat exchanger, that is, realizes being not turned on source pump In the case of meet building cooling load demand, so as to reduce the run time of unit, improve system whole year efficiency.Now, the 7th is electric Magnet valve, the tenth magnetic valve, the 11st magnetic valve are opened, remaining valve closing, and the second pump is opened, and remaining pump is closed.Soil accumulation of energy Circulatory mediator in loop pumps into underground pipe by the second pump, after reducing with soil heat exchange temperature in underground pipe, the electromagnetism of Jing the tenth Valve enters the 3rd heat exchanger, in the 3rd heat exchanger with the heat exchange of user side backwater after temperature raise, then the magnetic valves of Jing the 7th are by the Two pumpings enter, and complete circulation.In cold and hot water loop, user side chilled water enters from the magnetic valve of backwater end Jing the 11st of unit Three heat exchangers, complete from the confession water end (W.E.) outflow of unit after heat-exchange temperature is reduced in the 3rd heat exchanger with circulatory mediator, and supply is used Family side, unit its cocircuit does not work.
Summer normal mode:When summer, the refrigeration duty of building is continuously increased with the rising of outdoor temperature, summer direct-furnish Pattern is difficult to meet building cooling load demand, but now outdoor wet-bulb temperature is less than setting value, the heat-sinking capability of heat source tower When meeting train condenser cooling requirements, this pattern is run.Now soil energy storage loop, solar energy accumulation loop and solution regeneration Loop is out of service, i.e., the first magnetic valve, the second magnetic valve are opened in heat source tower loop, the 12nd electromagnetism in cold and hot water loop Valve is opened, and remaining magnetic valve is in closed mode, and the first pump is opened, and remaining pump is closed.Under the pattern, heat source tower Circulatory mediator in loop is water., used as evaporimeter, the second heat exchanger is used as condenser for First Heat Exchanger.It is low in refrigerant loop The refrigerant gas of warm low pressure become HTHP superheated vapor and discharge after being compressed by compressor suction from gas-liquid separator, Jing Four-way change-over valve is crossed in the second heat exchanger, cold-producing medium exchanges heat wherein with cooling water, releases heat, condensation becomes liquid, Cold-producing medium flows out from the second heat exchanger, to sequentially pass through after the second check valve and become low after reservoir, filter, expansion valve The gas-liquid two-phase of warm low pressure, then enter First Heat Exchanger through the 3rd check valve, cold-producing medium absorbs heat evaporation in First Heat Exchanger, Chilled water is produced, overheated gas is become after cold-producing medium evaporating completely and is out entered gas-liquid through four-way change-over valve from First Heat Exchanger Separator, is then again sucked into compressor, and so as to complete kind of refrigeration cycle, chilled water is produced in realization.In heat source tower loop, cooling Water after absorption condensation heat, flows out from the second heat exchanger solution side output end and enters heat through the second magnetic valve in the second heat exchanger Source tower, cooling water carries out heat and mass with air in heat source tower, and by own partial moisture evaporation remaining cooling water is realized Cooling, the cooling water after cooling flows out to be entered by the first pumping Jing after the first magnetic valve from the output end of heat source tower first, completes cooling The circulation of water.In cold and hot water loop, chilled water enters First Heat Exchanger from the magnetic valve of backwater end Jing the 12nd of unit, first Exchanged heat with cold-producing medium in heat exchanger, temperature flows out after reducing, the confession water end (W.E.) supply user side of Jing units.
Summer peak regulation pattern:When wet-bulb temperature is higher than setting value outside summer room, now heat source tower isolated operation will be unable to Meet train condenser cooling requirements, coolant water temperature and unit condensation temperature all will rising, unit refrigerating efficiency and refrigerating capacities To decline, now soil energy storage loop is opened, run with heat source tower circuit in series, so that train condenser is in relatively low condensation At a temperature of realize the discharge of condenser heat.Now, solar energy accumulation loop and solution regenerative circuit are out of service, i.e., second is electric Magnet valve, the 4th magnetic valve, the 6th magnetic valve and the 12nd magnetic valve are opened, remaining closed electromagnetic valve, and the second pump is opened, remaining pump Close.Under the operational mode, the flow process of refrigerant loop is consistent with its flow process under summer normal mode.Heat source tower loop with In soil thermal storage loop, cooling water after absorption condensation heat, flows out in the second heat exchanger from the second heat exchanger solution side output end Heat source tower is entered through the second magnetic valve, cooling water carries out heat and mass with air in heat source tower, by own partial moisture The cooling of remaining cooling water is realized in evaporation, and the cooling water after cooling flows out the magnetic valves of Jing the 4th by the from the output end of heat source tower first Two pumpings to enter and be pumped to underground pipe after pressurization, further to soil release heat in underground pipe, then enter through the 6th magnetic valve Enter the second heat exchanger, complete cooling water circulation.The flow process of cold and hot water loop is consistent with summer normal mode.
Summer accumulation of heat pattern:Because conventional underground pipe floor space is big, limited by geographical geological conditions, and unit in summer is cold The radiating of solidifying heat fully relies on underground pipe with the low level heat that winter evaporimeter is absorbed, and causes underground pipe quantity more, initial cost Greatly.In the system of the present invention, underground pipe is only used for peak regulation and accumulation of heat, its pipe laying quantity far fewer than conventional earth source heat pump demand, And distance of embedded pipe is only within 2 meters(Conventional pipe laying is 5 meters), floor space(Take up an area demand)Significantly reduce, so as to avoid Limited by geographical geological conditions.Therefore, after summer building air conditioning load peak, when building cooling load is with the decline of temperature And when being reduced to desired value, when can only lean on underground pipe just can complete condensation heat heat extraction, run summer accumulation of heat pattern.Now heat source tower Loop does not work, and by soil energy storage loop as the heat extraction object of unit condensation heat, condenser radiating is stored in soil.This When, the 3rd magnetic valve, the 6th magnetic valve, the 12nd magnetic valve are opened, and remaining valve is closed, and the second pump is opened, its Remaining pump is closed.Under the operational mode, the flow process of refrigerant loop is consistent with its flow process under summer normal mode. In soil energy storage loop, cooling water after absorption condensation heat, is passed through in the second heat exchanger from the second heat exchanger solution side output end 3rd magnetic valve is entered by the second pumping and be pumped to underground pipe after pressurization, and heat is discharged to soil in underground pipe, then through the 6th Magnetic valve enters the second heat exchanger, completes cooling water circulation.The flow process of cold and hot water loop is consistent with summer normal mode.
Transition season accumulation of heat pattern:In the fall excessive season, unit need not freeze, when intensity of solar radiation is larger, Run the pattern.Under the pattern, unit is out of service, and refrigerant loop, cold and hot water loop, solution regenerative circuit, heat source tower are returned Road does not work, and soil energy storage loop and solar energy accumulation circuit in series run.Now, the 5th magnetic valve, the 7th magnetic valve are opened Open, remaining magnetic valve is closed, the second pump is opened, remaining pump is closed.Circulatory mediator is in solar energy heating Absorb after solar heat in plate, the magnetic valves of Jing the 7th pump into underground pipe by the second pump, radiate to soil in underground pipe, then Jing 5th magnetic valve returns to solar heat-collection plate, completes energy storage circulation, and the heat collected by solar heat-collection plate is stored in soil In so that the temperature of soil is increased to setting value.
Realize that solar energy composite utilizes the heat source tower heat pump system with soil across season energy storage, its winter operation pattern to divide For three kinds:Winter direct-furnish pattern, winter normal mode, winter peak regulation pattern.
Winter direct-furnish pattern:Because unit is in summer operation summer accumulation of heat pattern and transition season accumulation of heat pattern, by unit The solar energy of condensation heat and transition season is stored among soil, and the soil moisture in underground pipe region is higher, winter at the beginning one As the thermic load built it is relatively low, now directly will can be stored in soil by the 3rd heat exchanger using after circulatory mediator and soil heat exchange The heat deposited is directly output to user side, you can realization meets heating load demand in the case where source pump is not turned on, So as to reduce the run time of unit, system whole year efficiency is improved.Now, the 7th magnetic valve, the tenth magnetic valve, the 11st electromagnetism Valve is opened, remaining valve closing, and the second pump is opened, and remaining pump is closed.Circulatory mediator pumps into underground pipe by the second pump, in underground pipe In with soil heat exchange temperature raise after, the magnetic valves of Jing the tenth enter the 3rd heat exchanger, with user side backwater in the 3rd heat exchanger Heat exchange, again the magnetic valves of Jing the 7th are entered by the second pumping after temperature reduction, complete circulation.In cold and hot water loop, user side hot water from The magnetic valve of backwater end Jing the 11st of unit enters the 3rd heat exchanger, and heat-exchange temperature is completed with circulatory mediator in the 3rd heat exchanger Flow out from the confession water end (W.E.) of unit after rising, supply user side, unit its cocircuit does not work.
Winter normal mode:When in the winter time outdoor dry-bulb temperature is higher than setting value, using heat source tower from outdoor air institute Caloric receptivity can meet the low-grade heat demand of unit, now heat source tower separately as unit low level heat energy, while underground pipe, Solar heat-collection plate series operation, the heat for needed for the regenerating unit of unit provides solution regeneration.Now, the first magnetic valve, Second magnetic valve, the 4th magnetic valve, the 8th magnetic valve, the 9th magnetic valve, the 12nd magnetic valve are opened, remaining closed electromagnetic valve (Depending on 5th magnetic valve, the action apparent sun radiation intensity of the 13rd magnetic valve), the first pump, the second pump and the 3rd pump are opened. Under the operational mode, the circulatory mediator in heat source tower loop be solution, First Heat Exchanger as condenser, the second heat exchanger conduct Evaporimeter.The refrigerant gas of low-temp low-pressure become high after being compressed by compressor suction from gas-liquid separator in refrigerant loop Warm high pressure superheated vapor is discharged, and is entered in First Heat Exchanger through four-way change-over valve, and cold-producing medium exchanges heat with hot water, releases heat, Condensation becomes liquid, flows out from First Heat Exchanger, and reservoir, filter, expansion valve are sequentially passed through after the first check valve Become the gas-liquid two-phase of low-temp low-pressure afterwards, then the second heat exchanger is entered through the 4th check valve, cold-producing medium is in the second heat exchanger Exchanged heat with solution, become overheated gas after cold-producing medium heat absorption evaporating completely and flow out through four-way change-over valve from the second heat exchanger Into gas-liquid separator, then again hot water preparing, so as to complete to heat circulation, is realized by compressor suction compression.Heat source tower In loop, solution is released after thermal temperature is reduced and flowed out in the second heat exchanger and refrigerant heat exchanger, and the magnetic valves of Jing second are entered Heat source tower, solution carries out heat and mass in heat source tower with air, after solution temperature is raised, flows out from the output end of heat source tower first Solution be divided into two parts, most solutions pump into the second heat exchanger Jing after the first magnetic valve by the first pump, complete solution circulation. In soil energy storage loop, solar energy accumulation loop and solution regenerative circuit, the fraction solution that the output end of heat source tower first flows out Entered by the second pumping Jing after the 4th magnetic valve and pump into underground pipe after pressurization, solution in underground pipe with soil heat exchange, from soil Heat absorption causes temperature to raise, and solution flows out from underground pipe, when intensity of solar radiation reaches setting value, the magnetic valves of solution Jing the 5th Into solar heat-collection plate(Now the 13rd closed electromagnetic valve), solution is by Jing after the further heat temperature raising of solar heat-collection plate Eight magnetic valves enter regenerating unit;When intensity of solar radiation is less than setting value, the solution Jing the 13rd flowed out from underground pipe is electric Magnet valve(Now the 5th closed electromagnetic valve), regenerating unit is entered after the 8th magnetic valve.Solution into regenerating unit is in regeneration dress Regenerated in putting, the temperature of solution is reduced, while the concentration of solution is raised, the concentrated solution after regeneration flows out Jing from regenerating unit Entered by the 3rd pumping after 9th magnetic valve and heat source tower is entered by the input of heat source tower second after pressurization, complete the regeneration of solution, and Realize the control to solution concentration in heat source tower heat pump system.In cold and hot water loop, backwater end Jing of the user side hot water from unit 12nd magnetic valve enters First Heat Exchanger, and with refrigerant heat exchanger in First Heat Exchanger, hot water temperature changes after raising from first Hot device flows out, and the confession water end (W.E.) of Jing units flows out supply user.
Winter peak regulation pattern:When in the winter time outdoor dry-bulb temperature is less than setting value, the heat absorbed in the heat source tower is When cannot meet the low level heat energy demand of unit, circulation solution temperature will be reduced, and the evaporating temperature of unit declines, and causes unit system The thermal efficiency and heating capacity decline, and are the efficiency and heat capacity for ensureing unit, run this pattern.Now, by underground pipe and heat Source tower series operation, with the low level for meeting unit heat request is taken.Now, the second magnetic valve, the 4th magnetic valve, the 6th magnetic valve, 8th magnetic valve, the 9th magnetic valve, the 12nd magnetic valve are opened, remaining closed electromagnetic valve(5th magnetic valve, the 13rd magnetic valve Action apparent sun radiation intensity depending on), the second pump, the unlatching of the 3rd pump, remaining pump closing.Under the operational mode, cold-producing medium is returned Road is consistent with winter normal mode.In heat source tower loop and soil energy storage loop, solution is changed in the second heat exchanger with cold-producing medium Heat, releases the outflow magnetic valves of Jing second after thermal temperature is reduced and enters heat source tower, and solution is conducted heat in heat source tower with air Mass transfer, after solution temperature is raised, flows out from the output end of heat source tower first and enters pump after pressurization by the second pumping Jing after the 4th magnetic valve Enter underground pipe, solution in underground pipe with soil heat exchange, absorb the heat of soil, temperature is further raised, and solution is from underground pipe Outlet flow out after, be divided into two-way, enter the second heat exchanger after the 6th magnetic valve all the way, Ling Yilu works as solar radiation When intensity reaches setting value, the magnetic valves of solution Jing the 5th enter solar heat-collection plate(Now the 13rd closed electromagnetic valve), solution Regenerating unit is entered by the magnetic valves of Jing the 8th after the further heat temperature raising of solar heat-collection plate;When intensity of solar radiation is less than setting During value, from the magnetic valves of solution Jing the 13rd that underground pipe flows out(Now the 5th closed electromagnetic valve), enter again after the 8th magnetic valve Generating apparatus.Solution into regenerating unit is regenerated in regenerating unit, and the temperature of solution is reduced, while the concentration liter of solution Height, the concentrated solution after regeneration flows out Jing after the 9th magnetic valve enters pressurization by the 3rd pumping from regenerating unit and is input into from heat source tower second End enters heat source tower, completes the regeneration of solution, realizes in running to the control of solution concentration.Cold and hot water loop and winter Normal mode is consistent.
The present invention solves heat source tower heat pump system extreme because considering using underground pipe and the Peak Load Adjustment of soil energy storage Unit installed capacity is excessive caused by weather, the problem that initial cost increases, while realizing Summer and winter just soil by soil energy storage Stored cold and hot amount direct-furnish, without the need for opening source pump, greatly improves system energy efficiency, in the winter time normal mode to user side Under, solar thermal collector provides thermal source for the regeneration of heat source tower solution jointly with underground pipe, it is ensured that the safe and stable operation of unit, real The annual comprehensive high-efficiency operation of existing system.
Beneficial effect:The present invention compared with prior art, with advantages below:
1st, the heat source tower and underground pipe of apparatus of the present invention outside the summer room wet-bulb temperature higher than dry bulb temperature outside setting value or winter room Degree is less than series operation during setting value, heat release collectively as source pump condensation heat or to provide low level for evaporimeter hot Source, realizes normal table operation of the unit under bad working environments, it is to avoid conventional heat sources tower heat pump is under the bad working environments Performance significantly decay so that heat source tower heat pump system unit total installation of generating capacity significantly reduces.
2. the heat source tower of apparatus of the present invention quits work at summer Mo, is filled by heat extraction of the underground pipe as unit condensation heat Put, unit condensation heat is stored in soil, while solar heat-collection plate is independent when in the fall transition season unit quits work Operation, solar energy is stored in soil, realize using across the season higher temperature accumulation of energy of soil, be winter direct-furnish pattern and Improve winter heating's efficiency and provide guarantee.
3rd, the underground pipe of apparatus of the present invention is at the beginning of summer, after wherein circulatory mediator is with soil heat exchange, at a temperature below setting When definite value and circulatory mediator temperature at the beginning of winter are higher than setting value, take directly by the 3rd heat exchanger by cold, heat direct-furnish to User, without the need for the lifting of source pump, is greatly lowered system units consumption, realizes being substantially improved for system synthesis efficiency.
4th, the underground pipe and solar heat-collection plate of apparatus of the present invention series operation under normal mode and peak regulation pattern in the winter time, Collectively as the thermal source that the solution of regenerating unit regenerates, efficiently solving be additionally provided the energy needed for conventional soln regeneration Problem, the comprehensive energy efficiency of system is greatly improved while realizing solution highly efficient regeneration.
5th, the distance of embedded pipe of the underground pipe of apparatus of the present invention is less than 2 meters, and the buried tube pitch of conventional water earth source heat pump is 5 Rice, significantly reduces the floor space of underground pipe, breaks through the restriction that geographical geological conditions is used system.
Description of the drawings
Fig. 1 is the present invention based on soil and the schematic diagram of the heat source tower heat pump system of photo-thermal accumulation of energy.
Have in figure:Compressor 1;Four-way change-over valve 2;Four-way change-over valve first input end 2a;Four-way change-over valve first is exported End 2b;Four-way change-over valve the second input 2c;Output end 2d of four-way change-over valve second;Gas-liquid separator 3;Reservoir 4;Filter 5;Expansion valve 6;First check valve 7;Second check valve 8;3rd check valve 9;4th check valve 10;First Heat Exchanger 11;First Heat exchanger water side input 11a;First Heat Exchanger water side output end 11b;First Heat Exchanger refrigerant side input 11c;First Heat exchanger refrigerant side output end 11d;Second heat exchanger 12;Second heat exchanger refrigerant side input 12a;Second heat exchanger system Cryogen side output end 12b;Second heat exchanger solution side input 12c;Second heat exchanger solution side output end 12d;3rd heat exchange Device 13;3rd heat exchanger water side input 13a;3rd heat exchanger water side output end 13b;3rd heat exchanger solution side input 13c;3rd heat exchanger solution side output end 13d;Heat source tower 14;Heat source tower first input end 14a;The output end of heat source tower first 14b;Heat source tower the second input 14c;The input 14d of heat source tower the 3rd;Underground pipe 15;Solar heat-collection plate 16;Regenerating unit 17;First pump 18;Second pump 19;3rd pump 20;First magnetic valve 21;Second magnetic valve 22;3rd magnetic valve 23;4th electromagnetism Valve 24;5th magnetic valve 25;6th magnetic valve 26;7th magnetic valve 27;8th magnetic valve 28;9th magnetic valve 29;Tenth is electric Magnet valve 30;11st magnetic valve 31;12nd magnetic valve 32;13rd magnetic valve 33.
Specific embodiment
The present invention is further illustrated with reference to Fig. 1 and specific embodiment.
The present invention is a kind of to realize that solar energy composite utilizes the heat source tower heat pump system with soil across season energy storage, including refrigeration Agent loop, heat source tower loop, soil energy storage loop, solar energy accumulation loop, solution regenerative circuit and cold and hot water loop.Cold-producing medium In loop, the output end of compressor 1 is connected with four-way change-over valve first input end 2a, output end 2b of four-way change-over valve first and Two heat exchanger refrigerant side input 12a are connected, the second heat exchanger refrigerant side output end 12b simultaneously with the second check valve 8 The outlet of entrance and the 4th check valve 10 is connected, and the outlet of the second check valve 8 and the outlet of the first check valve 7 converge afterwards while connecting The entrance of reservoir 4 is connected to, the entrance of the 4th check valve 10 is while the entrance and the outlet phase of expansion valve 6 with the 3rd check valve 9 Even, the filter 5 is connected between reservoir 4 and expansion valve 6, the entrance of the first check valve 7 and the 3rd check valve 9 Outlet is connected with First Heat Exchanger refrigerant side input 11c, and First Heat Exchanger refrigerant side output end 11d commutates with four-way The second input of valve 2c is connected, and output end 2d of four-way change-over valve second is connected with the entrance of gas-liquid separator 3, gas-liquid separator 3 Outlet be connected with the entrance of compressor 1, the First Heat Exchanger 11 is simultaneously the building block of cold and hot water loop, described second Heat exchanger 12 is simultaneously the building block of heat source tower loop and soil energy storage loop;
In heat source tower loop, second the second magnetic valves of heat exchanger solution side output end 12d Jing 22 are input into respectively with heat source tower first End 14a is connected with the input 14d of heat source tower the 3rd, heat source tower the first output end 14b Jing the first magnetic valves 21 and the first pump 18 Entrance is connected, and the outlet of the first pump 18 is connected with the second heat exchanger solution side input 12c;
In soil energy storage loop, the second heat exchanger solution side output end 12d is by the 3rd magnetic valve 23 and the entrance of the second pump 19 It is connected, output end 14b of heat source tower first is also connected by the 4th magnetic valve 24 with the entrance of the second pump 19, the 3rd heat exchanger solution Side output end 13d is also connected by the 7th magnetic valve 27 with the entrance of the second pump 19, outlet and the underground pipe 15 of the second pump 19 Entrance is connected, and the outlet of underground pipe 15 is connected by the 6th magnetic valve 26 with the second heat exchanger solution side input 12c, underground pipe 15 outlet is connected by the tenth magnetic valve 30 with the 3rd heat exchanger solution side input 13c simultaneously, the underground pipe 15, second Pump 19 is simultaneously solar energy accumulation loop, the building block of solution regenerative circuit, the 4th magnetic valve 24 be simultaneously solution again The building block in raw loop, the 7th magnetic valve 27 is simultaneously the building block in solar energy accumulation loop, the 3rd heat exchange Device 13 is simultaneously the building block of cold and hot water loop;
In solar energy accumulation loop, the outlet of underground pipe 15 passes through the entrance phase of the 5th magnetic valve 25 and solar heat-collection plate 16 Even, also converged by the outlet of the 13rd magnetic valve 33 and solar heat-collection plate 16, the 3rd heat exchanger solution side output end 13d Afterwards, be connected with the entrance of the second pump 19 commonly through the 7th magnetic valve 27, the solar heat-collection plate 16, the 5th magnetic valve 25, 13rd magnetic valve 33 is simultaneously the building block of solution regenerative circuit;
In solution regenerative circuit, the outlet of solar heat-collection plate 16 was separated all the way before being connected with the 7th magnetic valve 27, was passed through 8th magnetic valve 28 is connected with the entrance of regenerating unit 17, and the outlet of regenerating unit 17 is by the 9th magnetic valve 29 and the 3rd pump 20 Entrance be connected, the outlet of the 3rd pump 20 is connected with heat source tower the second input 14c.
In cold and hot water loop, the backwater end of unit is divided into two-way, leads up to the 12nd magnetic valve 32 and First Heat Exchanger Water side input 11a is connected, and separately leads up to the 11st magnetic valve 31 and is connected with the 3rd heat exchanger water side input 13a, and first Heat exchanger water side output end 11b and the 3rd heat exchanger water side output end 13b are connected with the confession water end (W.E.) of unit.
Realize that solar energy composite utilizes the heat source tower heat pump system with soil across season energy storage, its cooling in summer operational mode It is divided into five kinds:Summer direct-furnish pattern, summer normal mode, summer peak regulation pattern, summer accumulation of heat pattern and transition season accumulation of heat mould Formula.
Summer direct-furnish pattern:The refrigeration duty of summer common buildings at the beginning is relatively low, during winter unit by evaporimeter by cold Store among soil so that the soil moisture in underground pipe region is relatively low, now using can after circulatory mediator and soil heat exchange Directly the cold stored in soil is directly output to by user side by the 3rd heat exchanger 13, that is, realizes being not turned on source pump In the case of meet building cooling load demand, so as to reduce the run time of unit, improve system whole year efficiency.Now, the 7th Magnetic valve 27, the tenth magnetic valve 30, the 11st magnetic valve 31 are opened, remaining valve closing, and the second pump 19 is opened, and remaining pump is closed Close.Circulatory mediator in soil energy storage loop pumps into underground pipe 15 by the second pump 19, with soil heat exchange temperature in underground pipe 15 After reduction, the magnetic valves 30 of Jing the tenth enter the 3rd heat exchanger 13, temperature after exchanging heat with user side backwater in the 3rd heat exchanger 13 Raise, then the magnetic valves 27 of Jing the 7th are sucked by the second pump 19, complete circulation.In cold and hot water loop, user side chilled water is from unit The magnetic valve 31 of backwater end Jing the 11st enter the 3rd heat exchanger 13, heat exchange temperature is completed with circulatory mediator in the 3rd heat exchanger 13 Degree flows out after reducing from the confession water end (W.E.) of unit, supplies user side, and unit its cocircuit does not work.
Summer normal mode:When summer, the refrigeration duty of building is continuously increased with the rising of outdoor temperature, summer direct-furnish Pattern is difficult to meet building cooling load demand, but now outdoor wet-bulb temperature is less than setting value, the heat-sinking capability of heat source tower When meeting train condenser cooling requirements, this pattern is run.Now soil energy storage loop, solar energy accumulation loop and solution regeneration Loop is out of service, i.e., the first magnetic valve 21, the second magnetic valve 22 are opened in heat source tower loop, the 12nd in cold and hot water loop Magnetic valve 32 is opened, and remaining magnetic valve is in closed mode, and the first pump 18 is opened, and remaining pump is closed.The pattern Under, the circulatory mediator in heat source tower loop is water., used as evaporimeter, the second heat exchanger 12 is used as condenser for First Heat Exchanger 11. The refrigerant gas of low-temp low-pressure are sucked by compressor 1 from gas-liquid separator 3 and become high temperature height after compression in refrigerant loop Heat steam discharge is pressed through, is entered in the second heat exchanger 12 through four-way change-over valve 2, cold-producing medium exchanges heat wherein with cooling water, puts Go out heat, condensation becomes liquid, and cold-producing medium flows out from the second heat exchanger 12, and after the second check valve 8 liquid storage is sequentially passed through Become the gas-liquid two-phase of low-temp low-pressure after device 4, filter 5, expansion valve 6, then First Heat Exchanger is entered through the 3rd check valve 9 11, cold-producing medium absorbs heat evaporation in First Heat Exchanger 11, produces chilled water, and overheated gas are become after cold-producing medium evaporating completely from One heat exchanger 11 out enters gas-liquid separator 3 through four-way change-over valve 2, is then again sucked into compressor 1, so as to complete system Chilled water is produced in SAPMAC method, realization.In heat source tower loop, cooling water in the second heat exchanger 12 absorption condensation heat after, from second Heat exchanger solution side output end 12d flows out and enters heat source tower 14 through the second magnetic valve 22, cooling water and sky in heat source tower 14 Gas carries out heat and mass, and by own partial moisture evaporation the cooling of remaining cooling water is realized, the cooling water after cooling is from thermal source Output end 14b of tower first flows out and is sucked by the first pump 18 Jing after the first magnetic valve 21, completes the circulation of cooling water.Cold and hot water loop In, chilled water enters First Heat Exchanger 11 from the magnetic valve 32 of backwater end Jing the 12nd of unit, with system in First Heat Exchanger 11 Cryogen is exchanged heat, and temperature flows out after reducing, the confession water end (W.E.) supply user side of Jing units.
Summer peak regulation pattern:When wet-bulb temperature is higher than setting value outside summer room, now heat source tower isolated operation will be unable to Meet train condenser cooling requirements, coolant water temperature and unit condensation temperature all will rising, unit refrigerating efficiency and refrigerating capacities To decline, now soil energy storage loop is opened, run with heat source tower circuit in series, so that train condenser is in relatively low condensation At a temperature of realize the discharge of condenser heat.Now, solar energy accumulation loop and solution regenerative circuit are out of service, i.e., second is electric Magnet valve 22, the 4th magnetic valve 24, the 6th magnetic valve 26 and the 12nd magnetic valve 32 are opened, remaining closed electromagnetic valve, the second pump 19 Open, remaining pump is closed.Under the operational mode, the flow process of refrigerant loop is consistent with its flow process under summer normal mode. In heat source tower loop and soil thermal storage loop, cooling water is molten from the second heat exchanger in the second heat exchanger 12 after absorption condensation heat Liquid side output end 12d flows out and enters heat source tower 14 through the second magnetic valve 22, and cooling water is passed with air in heat source tower 14 Hot mass transfer, by own partial moisture evaporation the cooling of remaining cooling water is realized, the cooling water after cooling is defeated from heat source tower first Go out to hold 14b to flow out and be pumped to underground pipe 15 Jing after the 4th magnetic valve 24 is sucked pressurization by the second pump 19, in underground pipe 15 one is entered Walk to soil and discharge heat, then the second heat exchanger 12 is entered through the 6th magnetic valve 26, complete cooling water circulation.Cold and hot water loop Flow process it is consistent with summer normal mode.
Summer accumulation of heat pattern:Because conventional underground pipe floor space is big, limited by geographical geological conditions, and unit in summer is cold The radiating of solidifying heat fully relies on underground pipe with the low level heat that winter evaporimeter is absorbed, and causes underground pipe quantity more, initial cost Greatly.In the system of the present invention, underground pipe 15 is only used for peak regulation and accumulation of heat, and its pipe laying quantity is needed far fewer than conventional earth source heat pump Ask, and distance of embedded pipe is only within 2 meters(Conventional pipe laying is 5 meters), floor space(Take up an area demand)Significantly reduce, so as to keep away Exempt to be limited by geographical geological conditions.Therefore, after summer building air conditioning load peak, when building cooling load is with temperature When dropping and being reduced to desired value, when can only lean on underground pipe 15 just can complete condensation heat heat extraction, summer accumulation of heat pattern is run.It is now hot Yuan Ta loops do not work, and by soil energy storage loop as the heat extraction object of unit condensation heat, condenser radiating are stored in soil In.Now, the 3rd magnetic valve 23, the 6th magnetic valve 26, the 12nd magnetic valve 32 are opened, and remaining valve is closed, the Two pumps 19 are opened, and remaining pump is closed.Under the operational mode, the flow process of refrigerant loop is with it in summer normal mode Under flow process it is consistent.In soil energy storage loop, cooling water in the second heat exchanger 12 absorption condensation heat after, it is molten from the second heat exchanger Liquid side output end 12d is pumped to underground pipe 15 after the 3rd magnetic valve 23 is sucked pressurization by the second pump 19, in underground pipe 15 Heat is discharged to soil, then the second heat exchanger 12 is entered through the 6th magnetic valve 26, complete cooling water circulation.Cold and hot water loop Flow process is consistent with summer normal mode.
Transition season accumulation of heat pattern:In the fall excessive season, unit need not freeze, when intensity of solar radiation is larger, Run the pattern.Under the pattern, unit is out of service, and refrigerant loop, cold and hot water loop, solution regenerative circuit, heat source tower are returned Road does not work, and soil energy storage loop and solar energy accumulation circuit in series run.Now, the 5th magnetic valve 25, the 7th magnetic valve 27 open, and remaining magnetic valve is closed, and the second pump 19 is opened, and remaining pump is closed.Circulatory mediator is in the sun Can absorb after solar heat in collecting plate 16, the magnetic valves 27 of Jing the 7th pump into underground pipe 15 by the second pump 19, in underground pipe 15 It is middle to return to solar heat-collection plate 16 to soil radiating, then the magnetic valves 25 of Jing the 5th, energy storage circulation is completed, by solar heat-collection plate 16 Collected heat is stored in soil so that the temperature of soil is increased to setting value.
Realize that solar energy composite utilizes the heat source tower heat pump system with soil across season energy storage, its winter operation pattern to divide For three kinds:Winter direct-furnish pattern, winter normal mode, winter peak regulation pattern.
Winter direct-furnish pattern:Because unit is in summer operation summer accumulation of heat pattern and transition season accumulation of heat pattern, by unit The solar energy of condensation heat and transition season is stored among soil, and the soil moisture in underground pipe region is higher, winter at the beginning one As the thermic load built it is relatively low, now using can be directly by the 3rd heat exchanger 13 by soil after circulatory mediator and soil heat exchange The heat for storing is directly output to user side, you can realization meets heating load need in the case where source pump is not turned on Ask, so as to reduce the run time of unit, improve system whole year efficiency.Now, the 7th magnetic valve 27, the tenth magnetic valve 30, 11 magnetic valves 31 are opened, remaining valve closing, and the second pump 19 is opened, and remaining pump is closed.Circulatory mediator is pumped into by the second pump 19 Underground pipe 15, in underground pipe 15 with the rising of soil heat exchange temperature after, the magnetic valves 30 of Jing the tenth enter the 3rd heat exchanger 13, the Exchange heat with user side backwater in three heat exchangers 13, again the magnetic valves 27 of Jing the 7th are sucked by the second pump 19 after temperature reduction, complete to follow Ring.In cold and hot water loop, user side hot water enters the 3rd heat exchanger 13 from the magnetic valve 31 of backwater end Jing the 11st of unit, the Complete with circulatory mediator to be flowed out from the confession water end (W.E.) of unit after heat-exchange temperature is raised in three heat exchangers 13, supply user side, unit its Cocircuit does not work.
Winter normal mode:When in the winter time outdoor dry-bulb temperature is higher than setting value, using heat source tower 14 from outdoor air Recepting the caloric can meet the low-grade heat demand of unit, now heat source tower 14 separately as unit low level heat energy, simultaneously Pipe laying 15, the series operation of solar heat-collection plate 16, the heat for needed for the regenerating unit 17 of unit provides solution regeneration.Now, First magnetic valve 21, the second magnetic valve 22, the 4th magnetic valve 24, the 8th magnetic valve 28, the 9th magnetic valve 29, the 12nd magnetic valve 32 open, remaining closed electromagnetic valve(Depending on 5th magnetic valve 25, the action apparent sun radiation intensity of the 13rd magnetic valve 33), the One pump 18, the second pump 19 and the 3rd pump 20 are opened.Under the operational mode, the circulatory mediator in heat source tower loop be solution, first , used as condenser, the second heat exchanger 12 is used as evaporimeter for heat exchanger 11.In refrigerant loop the refrigerant gas of low-temp low-pressure from Sucked by compressor 1 in gas-liquid separator 3 and become the discharge of HTHP superheated vapor after compression, entered through four-way change-over valve 2 In First Heat Exchanger 11, cold-producing medium exchanges heat with hot water, releases heat, and condensation becomes liquid, flows out from First Heat Exchanger 11, Jing Cross to be sequentially passed through after the first check valve 7 and become the gas-liquid two-phase of low-temp low-pressure after reservoir 4, filter 5, expansion valve 6, then pass through 4th check valve 10 enters the second heat exchanger 12, and cold-producing medium is exchanged heat in the second heat exchanger 12 with solution, cold-producing medium heat absorption Become overheated gas after evaporating completely to flow out through four-way change-over valve 2 into gas-liquid separator 3, Ran Houzai from the second heat exchanger 12 It is secondary that compression is sucked by compressor 1, so as to complete to heat circulation, realize hot water preparing.In heat source tower loop, solution is in the second heat exchange In device 12 and refrigerant heat exchanger, release after thermal temperature is reduced and flow out, the second magnetic valves of Jing 22 enter heat source tower, and solution is in thermal source Heat and mass is carried out with air in tower 14, after solution temperature is raised, the solution flowed out from output end 14b of heat source tower first is divided into two Part, most solutions pump into the second heat exchanger 12 Jing after the first magnetic valve 21 by the first pump 18, complete solution circulation.Soil stores Can be in loop, solar energy accumulation loop and solution regenerative circuit, the fraction solution Jing that output end 14b of heat source tower first flows out the Sucked by the second pump 19 after four magnetic valves 24 and pump into underground pipe 15 after pressurization, solution in underground pipe 15 with soil heat exchange, from soil Heat absorption in earth causes temperature to raise, and solution flows out from underground pipe 15, when intensity of solar radiation reaches setting value, solution Jing the 5th Magnetic valve 25 enters solar heat-collection plate 16(Now the 13rd magnetic valve 33 is closed), solution is further by solar heat-collection plate 16 The magnetic valves 28 of Jing the 8th enter regenerating unit 17 after heat temperature raising;When intensity of solar radiation is less than setting value, from underground pipe 15 The magnetic valves 33 of solution Jing the 13rd of outflow(Now the 5th magnetic valve 25 is closed), regenerating unit is entered after the 8th magnetic valve 28 17.Solution into regenerating unit 17 is regenerated in regenerating unit 17, and the temperature of solution is reduced, while the concentration liter of solution Height, the concentrated solution after regeneration flows out from regenerating unit 17 and is sucked after pressurization by heat source tower by the 3rd pump 20 Jing after the 9th magnetic valve 29 Second input 14c enters heat source tower 14, completes the regeneration of solution, and realizes the control to solution concentration in heat source tower heat pump system System.In cold and hot water loop, user side hot water enters First Heat Exchanger 11 from the magnetic valve 32 of backwater end Jing the 12nd of unit, the With refrigerant heat exchanger in one heat exchanger 11, hot water temperature is flowed out after raising from First Heat Exchanger 11, and the confession water end (W.E.) of Jing units flows out Supply user.
Winter peak regulation pattern:When in the winter time outdoor dry-bulb temperature is less than setting value, from the heat absorbed in heat source tower 14 When cannot meet the low level heat energy demand of unit, circulation solution temperature will be reduced, and the evaporating temperature of unit declines, and causes unit Heating efficiency and heating capacity decline, and are the efficiency and heat capacity for ensureing unit, run this pattern.Now, by underground pipe 15 With the series operation of heat source tower 14, heat request is taken with the low level for meeting unit.Now, the second magnetic valve 22, the 4th magnetic valve 24, Six magnetic valves 26, the 8th magnetic valve 28, the 9th magnetic valve 29, the 12nd magnetic valve 32 are opened, remaining closed electromagnetic valve(5th is electric Depending on magnet valve 25, the action apparent sun radiation intensity of the 13rd magnetic valve 33), the second pump 19, the 3rd pump 20 open, and remaining pump is closed Close.Under the operational mode, refrigerant loop is consistent with winter normal mode.In heat source tower loop and soil energy storage loop, solution In the interior and refrigerant heat exchanger of the second heat exchanger 12, release the second magnetic valves of outflow Jing 22 after thermal temperature is reduced and enter heat source tower 14, solution carries out heat and mass in heat source tower 14 with air, after solution temperature is raised, from output end 14b of heat source tower first stream Go out to be sucked by the second pump 19 Jing after the 4th magnetic valve 24 and pump into underground pipe 15 after pressurization, solution is changed in underground pipe 15 with soil Heat, absorbs the heat of soil, and temperature is further raised, and after solution flows out from the outlet of underground pipe 15, is divided into two-way, all the way Jing Cross after the 6th magnetic valve 26 and enter the second heat exchanger 12, Ling Yilu, when intensity of solar radiation reaches setting value, solution Jing the 5th Magnetic valve 25 enters solar heat-collection plate 16(Now the 13rd magnetic valve 33 is closed), solution is further by solar heat-collection plate 16 The magnetic valves 28 of Jing the 8th enter regenerating unit 17 after heat temperature raising;When intensity of solar radiation is less than setting value, from underground pipe 15 The magnetic valves 33 of solution Jing the 13rd of outflow(Now the 5th magnetic valve 25 is closed), regenerating unit is entered after the 8th magnetic valve 28 17.Solution into regenerating unit 17 is regenerated in regenerating unit 17, and the temperature of solution is reduced, while the concentration liter of solution Height, the concentrated solution after regeneration is flowed out Jing after the 9th magnetic valve 29 is sucked pressurization by the 3rd pump 20 from heat source tower the from regenerating unit 17 Two input 14c enter heat source tower 14, complete the regeneration of solution, realize in running to the control of solution concentration.It is cold and hot Water loop is consistent with winter normal mode.
Above-described embodiment is only the preferred embodiment of the present invention, it should be pointed out that:For those skilled in the art For, under the premise without departing from the principles of the invention, some improvement and equivalent can also be made, these are to right of the present invention Requirement is improved and the technical scheme after equivalent, each falls within protection scope of the present invention.

Claims (10)

1. it is a kind of to realize that solar energy composite utilizes the heat source tower heat pump system with soil across season energy storage, it is characterised in that this is System includes refrigerant loop, heat source tower loop, soil energy storage loop, solar energy accumulation loop, solution regenerative circuit and hot and cold water Loop;
Described refrigerant loop includes compressor(1), four-way change-over valve(2), gas-liquid separator(3), reservoir(4), filter Device(5), expansion valve(6), the first check valve(7), the second check valve(8), the 3rd check valve(9), the 4th check valve(10), first Heat exchanger(11), the second heat exchanger(12);In described refrigerant loop, compressor(1)Output end and four-way change-over valve the One input(2a)It is connected, the output end of four-way change-over valve first(2b)With the second heat exchanger refrigerant side input(12a)It is connected, Second heat exchanger refrigerant side output end(12b)Simultaneously with the second check valve(8)Entrance and the 4th check valve(10)Outlet It is connected, the second check valve(8)Outlet and the first check valve(7)Outlet converge after while being connected to reservoir(4)Entrance, 4th check valve(10)Entrance simultaneously with the 3rd check valve(9)Entrance and expansion valve(6)Outlet be connected, the filter (5)It is connected in reservoir(4)And expansion valve(6)Between, the first check valve(7)Entrance and the 3rd check valve(9)Go out Mouth with First Heat Exchanger refrigerant side input(11c)It is connected, First Heat Exchanger refrigerant side output end(11d)Change with four-way To the input of valve second(2c)It is connected, the output end of four-way change-over valve second(2d)With gas-liquid separator(3)Entrance be connected, gas-liquid Separator(3)Outlet and compressor(1)Entrance be connected, the First Heat Exchanger(11)It is simultaneously the composition of cold and hot water loop Part, second heat exchanger(12)It is simultaneously the building block of heat source tower loop and soil energy storage loop;
Described heat source tower loop includes the second heat exchanger(12), heat source tower(14), the first pump(18), the first magnetic valve(21)、 Second magnetic valve(22);In described heat source tower loop, the second heat exchanger solution side output end(12d)The magnetic valves of Jing second(22) Respectively with heat source tower first input end(14a)With the input of heat source tower the 3rd(14d)It is connected, the output end of heat source tower first(14b) The magnetic valves of Jing first(21)With the first pump(18)Entrance be connected, the first pump(18)Outlet and the second heat exchanger solution side be input into End(12c)It is connected;
Described soil energy storage loop includes the second heat exchanger(12), the 3rd heat exchanger(13), underground pipe(15), the second pump (19), the 3rd magnetic valve(23), the 4th magnetic valve(24), the 6th magnetic valve(26), the 7th magnetic valve(27), the tenth magnetic valve (30);In described soil energy storage loop, the second heat exchanger solution side output end(12d)By the 3rd magnetic valve(23)With second Pump(19)Entrance be connected, the output end of heat source tower first(14b)Also pass through the 4th magnetic valve(24)With the second pump(19)Entrance It is connected, the 3rd heat exchanger solution side output end(13d)By the 7th magnetic valve(27)Also with the second pump(19)Entrance be connected, the Two pumps(19)Outlet and underground pipe(15)Entrance be connected, underground pipe(15)Outlet pass through the 6th magnetic valve(26)With second Heat exchanger solution side input(12c)It is connected, underground pipe(15)Outlet pass through the tenth magnetic valve simultaneously(30)With the 3rd heat exchange Device solution side input(13c)It is connected, the underground pipe(15), the second pump(19)Be simultaneously solar energy accumulation loop, solution again The building block in raw loop, the 4th magnetic valve(24)It is simultaneously the building block of solution regenerative circuit, the 7th electromagnetism Valve(27)It is simultaneously the building block in solar energy accumulation loop, the 3rd heat exchanger(13)It is simultaneously the composition of cold and hot water loop Part;
Described solar energy accumulation loop includes underground pipe(15), solar heat-collection plate(16), the second pump(19), the 5th magnetic valve (25), the 7th magnetic valve(27), the 13rd magnetic valve(33);The underground pipe(15)Outlet pass through the 5th magnetic valve(25)With Solar heat-collection plate(16)Entrance be connected, also by the 13rd magnetic valve(33)With solar heat-collection plate(16)Outlet, Three heat exchanger solution side output ends(13d)After converging, commonly through the 7th magnetic valve(27)With the second pump(19)Entrance be connected, The solar heat-collection plate(16), the 5th magnetic valve(25), the 13rd magnetic valve(33)It is simultaneously the composition of solution regenerative circuit Part;
Described solution regenerative circuit includes underground pipe(15), solar heat-collection plate(16), regenerating unit(17), the second pump (19), the 3rd pump(20), the 4th magnetic valve(24), the 5th magnetic valve(25), the 8th magnetic valve(28), the 9th magnetic valve(29)、 13rd magnetic valve(33);In described solution regenerative circuit, solar heat-collection plate(16)Outlet with the 7th magnetic valve (27)Separate before connection all the way, by the 8th magnetic valve(28)With regenerating unit(17)Entrance be connected, regenerating unit(17) Outlet pass through the 9th magnetic valve(29)With the 3rd pump(20)Entrance be connected, the 3rd pump(20)Outlet it is defeated with heat source tower second Enter end(14c)It is connected;
Described cold and hot water loop includes First Heat Exchanger(11), the 3rd heat exchanger(13), the 11st magnetic valve(31)And the tenth Two magnetic valves(32);In described cold and hot water loop, the backwater end of unit is divided into two-way, leads up to the 12nd magnetic valve(32) With First Heat Exchanger water side input(11a)It is connected, separately leads up to the 11st magnetic valve(31)It is defeated with the 3rd heat exchanger water side Enter end(13a)It is connected, First Heat Exchanger water side output end(11b)And the 3rd heat exchanger water side output end(13b)With unit It is connected for water end (W.E.).
It is 2. according to claim 1 to realize that solar energy composite utilizes the heat source tower heat pump system with soil across season energy storage, Characterized in that, described heat source tower(14)It is cold separately as heat pump when wet-bulb temperature is less than setting value outside summer room The heat release of heat is coagulated, when in the winter time outdoor dry-bulb temperature is higher than setting value, for heat pump evaporimeter low level heat energy is provided.
It is 3. according to claim 1 to realize that solar energy composite utilizes the heat source tower heat pump system with soil across season energy storage, Characterized in that, described heat source tower(14)And underground pipe(15)Series connection fortune when wet-bulb temperature is higher than setting value outside summer room OK, collectively as the heat release of heat pump summer condensation heat, also connect when in the winter time outdoor dry-bulb temperature is less than setting value Operation, provides low level heat energy for heat pump evaporimeter jointly.
It is 4. according to claim 1 to realize that solar energy composite utilizes the heat source tower heat pump system with soil across season energy storage, Characterized in that, described heat source tower(14)Quit work at summer Mo, by underground pipe(15)As the row of unit condensation heat Thermal, by the second heat exchanger(12)Condensation heat store in soil.
It is 5. according to claim 1 to realize that solar energy composite utilizes the heat source tower heat pump system with soil across season energy storage, Characterized in that, described solar heat-collection plate(16)The isolated operation in excessive season compressor emergency shutdown, by solar energy store in In soil, realize using across the season higher temperature accumulation of energy of soil.
6. according to claim 1,2,3,4 or 5 realizing solar energy composite using with soil across season energy storage heat source tower Heat pump, it is characterised in that described underground pipe(15)At the beginning of summer, when circulatory mediator therein is after with soil heat exchange, When temperature is less than setting value, by the 3rd heat exchanger(13)Directly cold is supplied into user, in the winter time just when circulation therein is situated between After matter and soil heat exchange, when temperature is higher than setting value, by the 3rd heat exchanger(13)Directly heat is supplied into user.
7. according to claim 1,2,3,4 or 5 realizing solar energy composite using with soil across season energy storage heat source tower Heat pump, it is characterised in that described underground pipe(15)And solar heat-collection plate(16)Normal mode and peak regulation mould in the winter time Series operation under formula, is jointly regenerating unit(17)In solution regeneration provide thermal source.
8. according to claim 1,2,3,4 or 5 realizing solar energy composite using with soil across season energy storage heat source tower Heat pump, it is characterised in that described underground pipe(15)Distance of embedded pipe be less than 2 meters.
9. according to claim 1,2,3,4 or 5 realizing solar energy composite using with soil across season energy storage heat source tower Heat pump, it is characterised in that the heat source tower heat pump system includes at least one heat source tower heat pump unit and at least one thermal source Tower.
10. according to claim 1,2,3,4 or 5 realizing solar energy composite using with soil across season energy storage heat source tower Heat pump, it is characterised in that the heat source tower(14)For air and the heat-exchanger rig of solution fluid, specially cross-flow type thermal source Tower or adverse current type heat source tower.
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