CN109373610B - Heat supply and cold supply system with solar energy and underground water combined energy supply - Google Patents

Heat supply and cold supply system with solar energy and underground water combined energy supply Download PDF

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Publication number
CN109373610B
CN109373610B CN201811191870.6A CN201811191870A CN109373610B CN 109373610 B CN109373610 B CN 109373610B CN 201811191870 A CN201811191870 A CN 201811191870A CN 109373610 B CN109373610 B CN 109373610B
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way valve
heat
solar
supply
heat storage
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CN109373610A (en
Inventor
赵民
康维斌
李杨
罗昔联
薛洁
俞超男
李子爱
郭军
沈洁
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China Northwest Architecture Design and Research Institute Co Ltd
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China Northwest Architecture Design and Research Institute Co Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D15/00—Other domestic- or space-heating systems
    • F24D15/02—Other domestic- or space-heating systems consisting of self-contained heating units, e.g. storage heaters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D19/00—Details
    • F24D19/10—Arrangement or mounting of control or safety devices
    • F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/89—Arrangement or mounting of control or safety devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
    • F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
    • F24F5/0035—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning using evaporation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
    • F24F5/0046—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater using natural energy, e.g. solar energy, energy from the ground
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
    • F24F5/0089—Systems using radiation from walls or panels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00—Ventilation
    • F24F7/007—Ventilation with forced flow
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D2200/00—Heat sources or energy sources
    • F24D2200/11—Geothermal energy
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D2200/00—Heat sources or energy sources
    • F24D2200/14—Solar energy
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
    • F24F5/0046—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater using natural energy, e.g. solar energy, energy from the ground
    • F24F2005/0057—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater using natural energy, e.g. solar energy, energy from the ground receiving heat-exchange fluid from a closed circuit in the ground
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
    • F24F5/0046—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater using natural energy, e.g. solar energy, energy from the ground
    • F24F2005/0064—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater using natural energy, e.g. solar energy, energy from the ground using solar energy
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00—Integration of renewable energy sources in buildings
    • Y02B10/20—Solar thermal
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00—Integration of renewable energy sources in buildings
    • Y02B10/40—Geothermal heat-pumps
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00—Integration of renewable energy sources in buildings
    • Y02B10/70—Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/54—Free-cooling systems

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Sustainable Energy (AREA)
  • Other Air-Conditioning Systems (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The invention provides a solar energy and underground water combined energy supply heat supply and cold supply system, which comprises a solar energy collection module, a phase change heat storage module, a heat supply and cold supply tail end module and a temperature and humidity independent control air conditioning module, wherein different subsystems can be formed by the modules through switching of different ports of a four-way valve and a three-way valve, namely a solar phase change heat storage subsystem, a solar heat supply heating subsystem, a phase change heat storage heat supply heating subsystem, a solar temperature and humidity independent control air conditioning subsystem and a phase change heat storage temperature and humidity independent control air conditioning subsystem, so that the functions of year-round heat storage, winter heat supply and summer temperature and humidity independent control are realized. The system has comprehensive overall functions, flexible control, convenient adjustment and good building energy-saving effect.

Description

heat supply and cold supply system with solar energy and underground water combined energy supply
Technical Field
The invention belongs to the field of heating ventilation air conditioners, relates to a composite heating ventilation air conditioning system, and particularly relates to a heating and cooling system powered by solar energy and underground water in a combined manner.
Background
The proportion of the building energy consumption in the total energy consumption of China is increased to about 30%, the energy consumption of the heating ventilation air conditioner accounts for more than 60% of the total energy consumption of the building, and the energy conservation and emission reduction of the building become energy problems which need to be solved urgently. In 2006, the national promulgated ' renewable energy law of the people's republic of China ' has advocated the utilization of renewable energy energetically, and in view of the regional differences and instability of renewable energy such as wind energy, water energy and the like, the renewable energy is difficult to be effectively utilized and popularized in building energy conservation, and solar energy is widely distributed and rich in resources, so that the renewable energy has extremely wide prospects in application to buildings.
the phase-change heat storage tank can store heat by utilizing latent heat in the phase-change process, store solar energy when solar radiation exists in the daytime, and release heat at night. Compare in traditional heat storage water pitcher utilization sensible heat storage, the energy storage density of the latent heat accumulation mode of phase change heat storage jar is higher, can dwindle the device volume greatly, and the heat accumulation efficiency is higher, and leaving water temperature is also more stable.
The soil temperature of about 15 meters underground is about 18 ℃ generally, in summer, an underground cold source is obtained through the ground heat exchanger, cold water prepared by the ground heat exchanger is sent into a room to achieve the purpose of cooling, and compared with a traditional mechanical air conditioning system, the system can greatly reduce building energy consumption.
The temperature and humidity independent control air conditioning system respectively and independently controls the humidity and the temperature of indoor air, achieves the purpose of humidity control through dehumidification and cooling of fresh air, and achieves the purpose of temperature control through cooling of the indoor air. Therefore, energy waste caused by the heat and humidity coupling treatment of the air by the traditional mechanical air conditioner can be avoided.
the capillary network radiation tail end has the characteristics of large heat exchange area, high thermal comfort and the like, and can be used as the tail end of an air conditioning system with independent temperature and humidity control. In winter, the radiation tail end of the capillary network can utilize a low-temperature heat source, and compared with the tail end hot water supply temperature of a radiator in a traditional heating system of about 80 ℃, the hot water supply temperature of the capillary network only needs about 40 ℃, so that the capillary network is suitable for being used in a solar heating system; in summer, the radiation tail end of the capillary network can utilize a high-temperature cold source, and compared with the traditional mechanical air conditioner that the tail end of the air conditioner needs the cold water temperature of about 12 ℃, the cold water supply temperature of the air conditioner only needs about 20 ℃. Therefore, the energy consumption of the building can be greatly saved.
The chinese patent application with application number 201610172474.3, a solar heating and cooling system, includes: although the technical problems of heating in winter and refrigerating in summer by utilizing solar energy are solved, the problem of energy storage is not considered, the system cannot run in the absence of solar radiation, and the tail end form of the system is not considered. The invention overcomes the defects and carries out integral optimization, so that the heating and cooling system powered by solar energy and underground water jointly realizes better building energy-saving effect.
Disclosure of Invention
the invention aims to provide a heat supply and cold supply system powered by solar energy and underground water in a combined manner, which comprises a solar heat collection module, a phase change heat storage module, a heat supply and cold supply tail end module and a temperature and humidity independent control air conditioning module, can meet the requirements of heat supply and heating in winter and cooling and dehumidifying in summer in a building room, comprehensively utilizes various building energy-saving modes, and has outstanding overall energy-saving and emission-reduction effects.
In order to achieve the purpose, the invention adopts the technical scheme that:
The utility model provides a heat supply and cooling system of solar energy and groundwater joint energy supply which characterized in that: the solar energy heat collection and heat supply system comprises a solar energy heat collection module, a phase change heat storage module, a heat and cold supply tail end module and an independent temperature and humidity control air conditioning module;
The connection relation of the solar heat collection module is as follows: the solar heat collectors are connected with the auxiliary boiler in the same way, the auxiliary boiler is connected with the V1 end of the second four-way valve, and the V1 end of the first four-way valve is connected with the solar heat collectors;
The connection relation of the phase change heat storage module is as follows: the V2 end of the second four-way valve is connected with a heat storage circulating pump, the heat storage circulating pump is connected with a phase change heat storage tank, a plurality of phase change heat storage tanks are sequentially connected in series, and the phase change heat storage tank is connected with the V2 end of the first four-way valve;
The connection relationship of the heat supply and cold supply end modules is as follows: the V4 end of the second four-way valve is connected with the V2 end of the first three-way valve, the V1 end of the first three-way valve is connected with the V2 end of the electric temperature control three-way valve, the V1 end of the electric temperature control three-way valve is connected with the tail end circulating pump, the tail end circulating pump is connected with the water separator, the water separator is connected with a plurality of capillary network radiation tail ends, a plurality of capillary network radiation tail ends are connected with the water collector, the water collector is connected with the V1 end of the second three-way valve and the V3 end of the electric temperature control three-way valve, and the V2 end of the second three-way valve is connected with the V4 end of;
the circulating water pipeline connection relationship of the temperature and humidity independent control air conditioner module is as follows: the V3 end of the second four-way valve is connected with a regeneration circulating pump, the regeneration circulating pump is connected with a regeneration heater, the regeneration heater is connected with the V3 end of the first four-way valve, the ground heat exchanger is connected with the V3 ends of the pre-cooling circulating pump and the first three-way valve, the pre-cooling circulating pump is connected with the pre-cooling heat exchanger, and the pre-cooling heat exchanger and the V3 end of the second three-way valve are connected with the ground heat exchanger;
The air pipeline connection relationship of the temperature and humidity independent control air conditioner module is as follows: the regeneration heater is connected with the regeneration area of the solid dehumidification rotating wheel, the regeneration area of the solid dehumidification rotating wheel is connected with the exhaust fan, the dehumidification area of the solid dehumidification rotating wheel is connected with the precooling heat exchanger, the precooling heat exchanger is respectively connected with a primary air inlet and a secondary air exhaust fan of the indirect evaporative cooler, a primary air outlet of the indirect evaporative cooler is connected with a primary air blower, and the secondary air exhaust fan is connected with a secondary air inlet of the indirect evaporative cooler.
The V1 and V2 ends of the first four-way valve and the second four-way valve are opened, the solar heat collection module and the phase change heat storage module can be combined into a solar phase change heat storage subsystem, and the purpose that the phase change heat storage tank stores heat of a solar heat collector or an auxiliary boiler can be realized;
The V1 and V4 ends of the first four-way valve and the second four-way valve are opened, the solar heat collection module and the heat supply and cold supply tail end module can be combined into a solar heat supply subsystem, the heat source is a solar heat collector or an auxiliary boiler, and heat supply from the radiation tail end of the capillary network to the indoor can be realized;
The V2 and V4 ends of the first four-way valve and the second four-way valve are opened, the V1 and V2 ends of the first three-way valve and the second three-way valve are opened, the phase-change heat storage module and the heat supply and cold supply tail end module can be combined into a phase-change heat storage heat supply heating subsystem, the heat source is a phase-change heat storage tank, and heat supply from the radiation tail end of a capillary network to the indoor can be realized;
the solar temperature and humidity independent control air conditioning subsystem can be formed by the solar heat collection module, the heat supply and cooling tail end module and the temperature and humidity independent control air conditioning module, a heat source is a solar heat collector or an auxiliary boiler, a cold source is a buried pipe heat exchanger, a primary air blower can send low-humidity fresh air into a room, and the radiation tail end of a capillary network supplies cold to the room;
The V2 end and the V3 end of first four-way valve and second four-way valve are opened, the V1 and the V3 end of first three-way valve and second three-way valve are opened, phase change heat storage module, heat supply and cold supply terminal module and humiture independent control air conditioning module can constitute phase change heat storage humiture independent control air conditioning subsystem, the heat source is the phase change heat storage jar, the cold source is the buried pipe heat exchanger, can realize that the primary air forced draught blower sends into low humidity new trend to the room, the terminal cooling to the room of capillary network radiation.
Solid dehumidification runner to the new trend degree of depth dehumidification back, the new trend temperature risees, the rethread precooling heat exchanger is to the new trend precooling, the new trend divide into two strands after the precooling, one is primary air, the other strand is the overgrate air, indirect evaporative cooler's secondary air passageway is wet passageway, the evaporative cooling effect is produced after the secondary air contacts with the shower water, be humidification cooling process in the secondary air passageway, indirect evaporative cooler's primary air passageway is dry passageway, primary air and refrigerated secondary air passageway heat transfer, be equal humidity cooling process in the primary air passageway, indoor wet load can be undertaken to primary air.
After the electric temperature control three-way valve can sense the indoor temperature, the opening degrees of V2 and V3 ends are automatically adjusted, the mixing proportion of return water is adjusted, and the control of the temperature of outlet water at the V1 end of the electric temperature control three-way valve is realized.
the water supply temperature of the radiation tail end of the capillary network in the solar heat supply and heating subsystem and the phase change heat storage heat supply and heating subsystem is 30-40 ℃; and the radiation tail end of the capillary network is arranged in the solar temperature and humidity independent control air-conditioning subsystem and the phase-change heat storage temperature and humidity independent control air-conditioning subsystem, and the water supply temperature is 18-22 ℃.
The buried pipe heat exchanger adopts a vertical pipe burying mode and is buried in deep soil, and the buried depth is 40-80 meters.
compared with the prior art, the invention has the beneficial effects that:
the invention provides a solar energy and underground water combined energy supply heat supply and cold supply system, which comprises a solar energy collection module, a phase change heat storage module, a heat supply and cold supply tail end module and a temperature and humidity independent control air conditioning module, wherein different subsystems can be formed by the modules through switching of different ports of a four-way valve and a three-way valve, so that the functions of year-round heat storage, winter heat supply and heating and summer temperature and humidity independent control are realized, and the specific analysis is as follows:
the solar phase-change heat storage subsystem can be combined, the phase-change heat storage tank can store heat of a solar heat collector or an auxiliary boiler, and the phase-change heat storage has higher energy storage density and more stable water outlet temperature compared with the heat storage of a traditional water tank;
The system can be combined into a solar heat supply and heating subsystem and a phase-change heat storage heat supply and heating subsystem, the radiation tail end of a capillary network supplies heat to the indoor space, and the subsystem adopts the radiation tail end of the capillary network, has better thermal comfort compared with the traditional radiator, has low requirement on the temperature of a heat source, and is more suitable for being used in the solar heat supply and heating subsystem and the phase-change heat storage heat supply and heating subsystem;
Can constitute solar energy humiture independent control air conditioner subsystem and phase transition heat accumulation humiture independent control air conditioner subsystem, the primary air forced draught blower sends into low humidity new trend to the building is indoor, undertake indoor wet load, capillary network radiation end is to indoor cooling, undertake indoor cold load, thereby realize humiture independent control, for traditional air conditioner system's heat and humidity coupling treatment process, the building energy consumption is lower, the cold source of subsystem has all adopted secret cold source, building energy saving effect is more outstanding, and capillary network radiation end also is not high to cold source temperature requirement, also more be fit for in the air conditioner system who adopts secret cold source.
Furthermore, the invention adopts a solid rotary wheel dehumidification mode to carry out deep dehumidification on outdoor fresh air in advance, because the heat release of the solid dehumidifying rotating wheel is also accompanied in the dehumidifying process, the temperature of the dehumidified fresh air is increased, therefore, the precooling heat exchanger is adopted for precooling, the fresh air is divided into primary air and secondary air, the secondary air is easy to generate evaporative cooling effect after contacting with spray water in a wet channel of the indirect evaporative cooler due to low humidity and high drying degree, cooling the primary air to a set indoor temperature and to be fresh air with low humidity, therefore, the solid dehumidification runner mainly bears indoor humidity load, in addition, the application range of the indirect evaporative cooler is greatly expanded by the application of the pre-dehumidification of the solid dehumidification runner, and the solid dehumidification runner is not only suitable for northern areas with dry air, but also suitable for southern areas with high air humidity.
Drawings
FIG. 1 is a schematic view of a solar and groundwater combined heating and cooling system according to the present invention;
FIG. 2 is a schematic view of a solar heat collecting module of a heating and cooling system powered by solar energy and groundwater provided by the present invention;
FIG. 3 is a schematic view of a phase change thermal storage module of a solar and groundwater combined heating and cooling system according to the present invention;
FIG. 4 is a schematic diagram of a heating and cooling end module of a solar and groundwater combined power supply heating and cooling system according to the present invention;
FIG. 5 is a schematic view of an independent temperature and humidity control air conditioning module of a solar and groundwater combined heating and cooling system according to the present invention;
In the figure, 1 is a solar heat collector, 2 is an auxiliary boiler, 3 is a phase change heat storage tank, 4 is a heat storage circulating pump, 5 is a first four-way valve, 6 is a regeneration circulating pump, 7 is a second four-way valve, 8 is a first three-way valve, 9 is an electric temperature control three-way valve, 10 is an end circulating pump, 11 is a water separator, 12 is a regeneration heater, 13 is a second three-way valve, 14 is a water collector, 15 is an exhaust fan, 16 is a buried pipe heat exchanger, 17 is a solid dehumidifying rotating wheel, 18 is a precooling circulating pump, 19 is a precooling heat exchanger, 20 is an indirect evaporative cooler, 21 is a secondary air exhaust fan, 22 is a primary air blower, and 23 is a capillary network radiation end.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The general concept of the invention is: the utility model provides a heat supply and cooling system of solar energy and groundwater joint energy supply, including solar energy collection module, phase change thermal storage module, heat supply and cooling end module, humiture independent control air conditioning module, through the different port switching of cross valve and three-way valve, different subsystems can be constituteed to above-mentioned module, namely solar energy phase change thermal storage subsystem, solar energy heat supply heating subsystem, phase change thermal storage heat supply heating subsystem, solar energy humiture independent control air conditioning subsystem and phase change thermal storage humiture independent control air conditioning subsystem, realize annual heat storage, winter heat supply heating, the function of humiture independent control in summer.
as shown in fig. 1, a heat and cold supply system powered by solar energy and underground water comprises a solar heat collection module, a phase change heat storage module, a heat and cold supply terminal module, and an independent temperature and humidity control air conditioning module.
As shown in fig. 1 and 2, the connection relationship of the solar heat collection modules is as follows: the solar heat collectors 1 are connected in the same way, the solar heat collector 1 is connected with the auxiliary boiler 2, the auxiliary boiler 2 is connected with the V1 end of the second four-way valve 7, and the V1 end of the first four-way valve 5 is connected with the solar heat collector 1.
as shown in fig. 1 and 3, the connection relationship of the phase change thermal storage module is as follows: the V2 end of the second four-way valve 7 is connected with a heat storage circulating pump 4, the heat storage circulating pump 4 is connected with a phase-change heat storage tank 3, a plurality of phase-change heat storage tanks 3 are connected in series in sequence, and the phase-change heat storage tank 3 is connected with the V2 end of the first four-way valve 5.
as shown in fig. 1 and 4, the connection relationship of the heat and cold supply end modules is as follows: the V4 end of the second four-way valve 7 is connected with the V2 end of the first three-way valve 8, the V1 end of the first three-way valve 8 is connected with the V2 end of the electric temperature control three-way valve 9, the V1 end of the electric temperature control three-way valve 9 is connected with the tail-end circulating pump 10, the tail-end circulating pump 10 is connected with the water distributor 11, the water distributor 11 is connected with the plurality of capillary network radiation ends 23, the plurality of capillary network radiation ends 23 are connected with the water collector 14, the water collector 14 is connected with the V1 end of the second three-way valve 13 and the V3 end of the electric temperature control three-way valve 9, and the V2 end of the second three-way valve 13 is connected with the V4 end of.
As shown in fig. 1 and 5, the connection relationship of the circulating water pipelines of the temperature and humidity independent control air conditioning module is as follows: the V3 end of the second four-way valve 7 is connected with a regeneration circulating pump 6, the regeneration circulating pump 6 is connected with a regeneration heater 12, the regeneration heater 12 is connected with the V3 end of the first four-way valve 5, the ground heat exchanger 16 is connected with the V3 ends of the pre-cooling circulating pump 18 and the first three-way valve 8, the pre-cooling circulating pump 18 is connected with the pre-cooling heat exchanger 19, and the pre-cooling heat exchanger 19 and the V3 end of the second three-way valve 13 are connected with the ground heat exchanger 16.
as shown in fig. 1 and 5, the air pipe connection relationship of the temperature and humidity independent control air conditioning module is as follows: the regeneration heater 12 is connected with the regeneration area of the solid dehumidifying rotor 17, the regeneration area of the solid dehumidifying rotor 17 is connected with the exhaust fan 15, the dehumidifying area of the solid dehumidifying rotor 17 is connected with the precooling heat exchanger 19, the precooling heat exchanger 19 is respectively connected with the primary air inlet of the indirect evaporative cooler 20 and the secondary air exhaust fan 21, the primary air outlet of the indirect evaporative cooler 20 is connected with the primary air blower 22, and the secondary air exhaust fan 21 is connected with the secondary air inlet of the indirect evaporative cooler 20.
the V1 and V2 ends of the first four-way valve 5 and the second four-way valve 7 are opened, the solar heat collection module and the phase change heat storage module can be combined into a solar phase change heat storage subsystem, and the phase change heat storage tank 3 can store heat of the solar heat collector 1 or the auxiliary boiler 2.
The V1 and V4 ends of the first four-way valve 5 and the second four-way valve 7 are opened, the solar heat collection module and the heat supply and cold supply tail end module can be combined into a solar heat supply subsystem, the heat source is a solar heat collector 1 or an auxiliary boiler 2, and heat supply to the indoor by the capillary network radiation tail end 23 can be realized.
The V2 and V4 ends of the first four-way valve 5 and the second four-way valve 7 are opened, the V1 and V2 ends of the first three-way valve 8 and the second three-way valve 13 are opened, the phase change heat storage module and the heat supply and cold supply tail end module can be combined into a phase change heat storage heat supply heating subsystem, the heat source is the phase change heat storage tank 3, and heat supply from the capillary network radiation tail end 23 to the indoor space can be realized.
The V1 and V3 ends of first cross valve 5, second cross valve 7, first three-way valve 8 and second three-way valve 13 are opened, solar energy collection module, heat supply and cooling terminal module and humiture independent control air conditioning module can constitute solar energy humiture independent control air conditioning subsystem, the heat source is solar collector 1 or auxiliary boiler 2, the cold source is buried pipe heat exchanger 16, can realize that primary air forced draught blower 22 sends into low humidity new trend to the room, capillary network radiation end 23 is to indoor cooling.
The V2 end and the V3 end of first four way valve 5 and second four way valve 7 are opened, the V1 and the V3 end of first three way valve 8 and second three way valve 13 are opened, the phase change heat storage module, the terminal module of heat supply and cold supply and the humiture independent control air conditioning module can constitute the phase change heat storage humiture independent control air conditioning subsystem, the heat source is phase change heat storage tank 3, the cold source is buried heat exchanger 16, can realize that primary air forced draft fan 22 sends into low humidity new trend to the room, the terminal 23 of capillary network radiation supplies cold to the room.
after the solid dehumidifying wheel 17 deeply dehumidifies the fresh air, the temperature of the fresh air rises, the fresh air is precooled by the precooling heat exchanger 19, the precooled fresh air is divided into two streams, one stream is primary air, the other stream is secondary air, a secondary air channel of the indirect evaporative cooler 20 is a wet channel, the secondary air contacts spray water to generate an evaporative cooling effect, a humidifying and cooling process is arranged in the secondary air channel, a primary air channel of the indirect evaporative cooler 20 is a dry channel, the primary air exchanges heat with the cooled secondary air channel, a constant-humidity cooling process is arranged in the primary air channel, and the primary air can bear indoor wet load.
After the electric temperature control three-way valve 9 can sense the indoor temperature, the opening degrees of the V2 end and the V3 end are automatically adjusted, the backwater mixing proportion is adjusted, and the control of the temperature of the outlet water at the V1 end of the electric temperature control three-way valve 9 is realized.
The water supply temperature of the capillary network radiation tail end 23 in the solar heat supply and heating subsystem and the phase change heat storage heat supply and heating subsystem is 30-40 ℃; and the radiation tail end 23 of the capillary network supplies water at a temperature of 18-22 ℃ in the solar temperature and humidity independent control air-conditioning subsystem and the phase-change heat storage temperature and humidity independent control air-conditioning subsystem.
The ground heat exchanger 16 adopts a vertical pipe burying mode, and the buried depth is 40-80 m.
The workflow of each subsystem is described in detail below.
Solar phase-change heat storage subsystem
the working process of the solar phase-change heat storage subsystem is divided into a heat storage process and a heat release process.
the working flow of the heat storage process is as follows: the V1 and V2 ends of the first four-way valve 5 are opened, the V1 and V2 ends of the second four-way valve 7 are opened, the solar heat collector 1 absorbs energy to heat internal circulating water, hot water flows out from the second four-way valve 5 under the drive of the heat storage circulating pump 4 and enters the phase-change heat storage tank 3, the phase-change material absorbs heat and stores the heat in the forms of sensible heat and latent heat, and the hot water after heat release flows out from the first four-way valve 5 and returns to the solar heat collector 1 to absorb the heat to be heated again. In the heat storage process, the hot water generated by the solar heat collector 1 can still pass through the V3 ends of the first four-way valve 5 and the second four-way valve 7 to enter the regenerative heater 12 to provide heat, or pass through the V4 ends of the first four-way valve 5 and the second four-way valve 7 to enter the capillary network radiation tail end 23 to provide heat.
When no solar radiation exists or the solar radiation is insufficient for multiple continuous days, the auxiliary boiler 2 can be adopted to supplement heat for the phase change heat storage tank 3, the working process is consistent with the above, and the function of the solar heat collector 1 is replaced by the auxiliary boiler 2.
And (3) heat release working flow: closing the V1 ends of the first four-way valve 5 and the second four-way valve 7, opening the V2 ends of the first four-way valve 5 and the second four-way valve 7, closing the heat storage circulating pump 4, and opening the V3 ends of the first four-way valve 5 and the second four-way valve 7 or opening the V4 ends of the first four-way valve 5 and the second four-way valve 7 according to the heat requirement of other modules; the hot water enters the regenerative heater 12 to provide heat, or enters the capillary network radiation end 23 to provide heat, and the hot water after heat release returns to the phase change heat storage tank to absorb heat to be heated again.
(II) solar heating supply subsystem
When solar radiation exists, the working process of the solar heating subsystem is as follows: the V1 and V4 ends of the first and second four-way valves 5 and 7 are opened, the V1 and V2 ends of the first and second three-way valves 8 and 13 are opened, the V2 and V3 ends of the first and second four-way valves 5 and 7 are closed, and the V3 end of the first and second three-way valves 8 and 13 is closed. The solar heat collector 1 absorbs energy to heat circulating water inside, hot water flows out from the second four-way valve 7 under the drive of the tail-end circulating pump 10, then flows out from the first three-way valve 8, enters the radiation tail end 23 of each capillary network through the electric temperature-control three-way valve 9 and the water distributor 11 to supply heat for the indoor of the building, and hot water after heat release returns to the water collector 14, flows out from the second three-way valve 13, flows out from the first four-way valve 5, and returns to the solar heat collector 1 to be heated again.
(III) phase-change heat-storage heating subsystem
When no solar radiation or insufficient solar radiation exists, the phase change heat storage tank 3 is used as a heat source, and the working flow of the phase change heat storage heat supply heating subsystem is as follows: the V2 and V4 ends of the first four-way valve 5 and the second four-way valve 7 are opened, the V1 and V2 ends of the first three-way valve 8 and the second three-way valve 13 are opened, the V1 and V3 ends of the first four-way valve 5 and the second four-way valve 7 are closed, the V3 end of the first three-way valve 8 and the second three-way valve 13 is closed, and the heat storage circulation pump 4 is closed. Hot water flows out of the second four-way valve 7, then flows out of the first three-way valve 8, enters the radiation tail end 23 of each capillary network through the electric temperature control three-way valve 9 and the water separator 11, supplies heat for the indoor of the building, returns to the water collector 14 after heat release, flows out of the second three-way valve 13, flows out of the first four-way valve 5, and returns to the phase-change heat storage tank 3 to be heated again.
(IV) solar temperature and humidity independent control air-conditioning subsystem
The temperature and humidity independent control air conditioning subsystem can be divided into a humidity control subsystem and a temperature control subsystem, wherein the humidity control is realized by supplying air through a primary air blower 22, and the temperature control is realized by supplying cold through a capillary network radiation tail end 23.
when solar radiation exists, the working process of the humidity control subsystem is as follows: the V1 and V3 terminals of the first and second four-way valves 5 and 7 are turned on, and the V2 and V4 terminals of the first and second four-way valves 5 and 7 are turned off. The solar heat collector 1 absorbs energy to heat circulating water inside, hot water flows out from the second four-way valve 7 under the drive of the regenerative pump 6, enters the regenerative heater 12 to heat fresh air outside, and hot water after heat release flows out from the first four-way valve 5 and returns to the solar heat collector 1 to be heated again. The air heated in the regenerative heater 12 takes moisture through the regeneration zone of the solid desiccant rotor 17, and is discharged to the outside through the exhaust fan 15. The solid dehumidifying rotor 17 rotates slowly, outdoor fresh air is dehumidified through a dehumidifying area of the solid dehumidifying rotor 17 and is heated, low-humidity fresh air is precooled and cooled through the precooling heat exchanger 19, the precooled fresh air is divided into primary air and secondary air, the secondary air is driven by the secondary air exhaust fan 21 to contact with spray water through a wet channel of the indirect evaporative cooler 20 to generate an evaporative cooling effect, humidification and cooling are achieved, and then the secondary air is exhausted to the outside; the primary air is driven by the primary air blower 22 to pass through the dry channel of the indirect evaporative cooler 20, exchanges heat with the secondary air, is cooled again, achieves equal-humidity temperature reduction, and then is sent to the indoor to bear the humidity load. The cold source of the pre-cooling heat exchanger 19 comes from underground, the circulating water exchanges heat with soil through the ground heat exchanger 16 to obtain cold water with a lower temperature, and the cold water enters the pre-cooling heat exchanger 19 to absorb heat under the driving of the pre-cooling circulating pump 18 and then returns to the ground heat exchanger 16.
the working process of the temperature control subsystem is as follows: opening the V1 and V3 ends of the first three-way valve 8 and the second three-way valve 13, and closing the V2 ends of the first three-way valve 8 and the second three-way valve 13; the ground heat exchanger 16 exchanges heat with soil to obtain cold water with lower temperature, the cold water flows out from the first three-way valve 8 under the drive of the tail-end circulating pump 10, flows into the water separator 11 through the electric temperature control three-way valve 9, then enters the radiation tail end 23 of each capillary network to supply cold for the indoor of the building, and the cold water after absorbing heat returns to the water collector 14 and flows out from the second three-way valve 13 to return to the ground heat exchanger 16 to be cooled again.
(V) phase-change heat storage temperature and humidity independent control air conditioner subsystem
When no solar radiation exists or the solar radiation is insufficient, the phase change heat storage tank 3 is used as a heat source, and the working flow of the humidity control subsystem is as follows: the V2 and V3 ends of the first four-way valve 5 and the second four-way valve 7 are opened, the V1 and V4 ends of the first four-way valve 5 and the second four-way valve 7 are closed, and the hot water flows out of the second four-way valve 7, is discharged in the regenerative heater 12, then flows out of the first four-way valve 5, returns to the phase-change heat storage tank 3, and is heated again. The rest of the process is the same as the workflow in the presence of solar radiation.
the working flow of the temperature control subsystem is the same as that of the solar radiation.
The electric temperature control three-way valve 9 can adjust the valve opening degree of the V2 and V3 ends according to the indoor temperature, and adjust the temperature of hot water or cold water supplied to the radiation tail end 23 of the capillary network in a mode of mixing return water with different proportions, so as to adjust the indoor heat supply temperature or cold supply temperature.
For subsystems needing heat source supply, namely a solar heat supply and heating subsystem, a phase-change heat storage and heat supply and heating subsystem, a solar temperature and humidity independent control air conditioning subsystem and a phase-change heat storage and temperature and humidity independent control air conditioning subsystem, when no solar radiation exists and the heat stored in a phase-change heat storage tank 3 is insufficient, an auxiliary boiler 2 can be adopted to replace a solar heat collector 1, the working process when solar radiation exists is operated, and corresponding functions are achieved.

Claims (6)

1. the utility model provides a heat supply and cooling system of solar energy and groundwater joint energy supply which characterized in that: the solar energy heat collection and heat supply system comprises a solar energy heat collection module, a phase change heat storage module, a heat and cold supply tail end module and an independent temperature and humidity control air conditioning module;
The connection relation of the solar heat collection module is as follows: the solar heat collectors (1) are connected in the same way, the solar heat collectors (1) are connected with the auxiliary boiler (2), the auxiliary boiler (2) is connected with the V1 end of the second four-way valve (7), and the V1 end of the first four-way valve (5) is connected with the solar heat collectors (1);
The connection relation of the phase change heat storage module is as follows: the V2 end of the second four-way valve (7) is connected with a heat storage circulating pump (4), the heat storage circulating pump (4) is connected with a phase change heat storage tank (3), a plurality of phase change heat storage tanks (3) are sequentially connected in series, and the phase change heat storage tank (3) is connected with the V2 end of the first four-way valve (5);
The connection relationship of the heat supply and cold supply end modules is as follows: the V4 end of the second four-way valve (7) is connected with the V2 end of the first three-way valve (8), the V1 end of the first three-way valve (8) is connected with the V2 end of the electric temperature control three-way valve (9), the V1 end of the electric temperature control three-way valve (9) is connected with the tail-end circulating pump (10), the tail-end circulating pump (10) is connected with the water distributor (11), the water distributor (11) is connected with a plurality of capillary network radiation tail ends (23), the plurality of capillary network radiation tail ends (23) are connected with the water collector (14), the water collector (14) is connected with the V1 end of the second three-way valve (13) and the V3 end of the electric temperature control three-way valve (9), and the V2 end of the second three-way valve (13) is connected with the V4 end of the;
The circulating water pipeline connection relationship of the temperature and humidity independent control air conditioner module is as follows: the V3 end of the second four-way valve (7) is connected with a regeneration circulating pump (6), the regeneration circulating pump (6) is connected with a regeneration heater (12), the regeneration heater (12) is connected with the V3 end of the first four-way valve (5), the ground heat exchanger (16) is connected with the V3 ends of the pre-cooling circulating pump (18) and the first three-way valve (8), the pre-cooling circulating pump (18) is connected with the pre-cooling heat exchanger (19), and the pre-cooling heat exchanger (19) and the V3 end of the second three-way valve (13) are connected with the ground heat exchanger (16);
The air pipeline connection relationship of the temperature and humidity independent control air conditioner module is as follows: the regeneration heater (12) is connected with the regeneration area of the solid dehumidifying rotating wheel (17), the regeneration area of the solid dehumidifying rotating wheel (17) is connected with the exhaust fan (15), the dehumidifying area of the solid dehumidifying rotating wheel (17) is connected with the precooling heat exchanger (19), the precooling heat exchanger (19) is respectively connected with the primary air inlet and the secondary air exhaust fan (21) of the indirect evaporative cooler (20), the primary air outlet of the indirect evaporative cooler (20) is connected with the primary air blower (22), and the secondary air exhaust fan (21) is connected with the secondary air inlet of the indirect evaporative cooler (20).
2. A solar and groundwater powered heating and cooling system as claimed in claim 1, wherein:
v1 and V2 ends of the first four-way valve (5) and the second four-way valve (7) are opened, the solar heat collection module and the phase change heat storage module can be combined into a solar phase change heat storage subsystem, and the phase change heat storage tank (3) can store heat of the solar heat collector (1) or the auxiliary boiler (2);
V1 and V4 ends of the first four-way valve (5) and the second four-way valve (7) are opened, a solar heat collection module and a heat supply and cold supply tail end module can be combined into a solar heat supply subsystem, a heat source is a solar heat collector (1) or an auxiliary boiler (2), and heat supply from a capillary network radiation tail end (23) to the indoor can be realized;
v2 and V4 ends of the first four-way valve (5) and the second four-way valve (7) are opened, V1 and V2 ends of the first three-way valve (8) and the second three-way valve (13) are opened, the phase-change heat storage module and the heat supply and cold supply tail end module can be combined into a phase-change heat storage heat supply subsystem, a heat source is a phase-change heat storage tank (3), and heat supply from a capillary network radiation tail end (23) to the indoor can be realized;
the V1 and V3 ends of a first four-way valve (5), a second four-way valve (7), a first three-way valve (8) and a second three-way valve (13) are opened, a solar heat collection module, a heat supply and cold supply tail end module and a temperature and humidity independent control air conditioning module can form a solar temperature and humidity independent control air conditioning subsystem, a heat source is a solar heat collector (1) or an auxiliary boiler (2), a cold source is a buried pipe heat exchanger (16), a primary air blower (22) can send low-humidity fresh air into a room, and a capillary network radiation tail end (23) supplies cold to the room;
The V2 end and the V3 end of first cross valve (5) and second cross valve (7) are opened, the V1 and the V3 end of first three-way valve (8) and second three-way valve (13) are opened, phase change heat storage module, heat supply and cold supply terminal module and humiture independent control air conditioning module can constitute phase change heat storage humiture independent control air conditioning subsystem, the heat source is phase change heat storage tank (3), the cold source is buried heat exchanger (16), can realize that primary air forced draught blower (22) send into low humidity new trend to the room, capillary network radiation end (23) are to indoor cold supply.
3. a solar and groundwater powered heating and cooling system as claimed in claim 1, wherein: after solid dehumidification runner (17) dehumidify the new trend degree of depth, the new trend temperature risees, the rethread precooling heat exchanger (19) is to the new trend precooling, the new trend divide into two strands after the precooling, one is primary air, another strand is the secondary air, the secondary air passageway of indirect evaporative cooler (20) is wet passageway, the evaporative cooling effect produces after the secondary air contacts with the shower water, be humidification cooling process in the secondary air passageway, the primary air passageway of indirect evaporative cooler (20) is the dry channel, primary air and refrigerated secondary air passageway heat transfer, be equal humidity cooling process in the primary air passageway, indoor wet load can be undertaken to primary air.
4. A solar and groundwater powered heating and cooling system as claimed in claim 1, wherein: after the electric temperature control three-way valve (9) can sense the indoor temperature, the opening degrees of V2 and V3 ends are automatically adjusted, the mixing proportion of return water is adjusted, and the control of the temperature of outlet water at the V1 end of the electric temperature control three-way valve (9) is realized.
5. A solar and groundwater powered heating and cooling system as claimed in claim 1, wherein: the water supply temperature of the capillary network radiation tail end (23) in the solar heat supply and heating subsystem and the phase change heat storage heat supply and heating subsystem is 30-40 ℃; and the water supply temperature of the capillary network radiation tail end (23) in the solar temperature and humidity independent control air-conditioning subsystem and the phase-change heat storage temperature and humidity independent control air-conditioning subsystem is 18-22 ℃.
6. A solar and groundwater powered heating and cooling system as claimed in claim 1, wherein: the ground heat exchanger (16) adopts a vertical pipe burying mode, and the buried depth is 40-80 m.
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