CN103277856A - Solar seasonal cold and hot combined air conditioning system - Google Patents

Solar seasonal cold and hot combined air conditioning system Download PDF

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Publication number
CN103277856A
CN103277856A CN2013102055682A CN201310205568A CN103277856A CN 103277856 A CN103277856 A CN 103277856A CN 2013102055682 A CN2013102055682 A CN 2013102055682A CN 201310205568 A CN201310205568 A CN 201310205568A CN 103277856 A CN103277856 A CN 103277856A
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CN
China
Prior art keywords
heat
cold
diverter valve
way diverter
storing
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Pending
Application number
CN2013102055682A
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Chinese (zh)
Inventor
姚远
马伟斌
廉永旺
龚宇烈
王显龙
李华山
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Guangzhou Institute of Energy Conversion of CAS
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Guangzhou Institute of Energy Conversion of CAS
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Priority to CN2013102055682A priority Critical patent/CN103277856A/en
Publication of CN103277856A publication Critical patent/CN103277856A/en
Pending legal-status Critical Current

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    • 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
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00Adapting or protecting infrastructure or their operation
    • Y02A30/27Relating to heating, ventilation or air conditioning [HVAC] technologies
    • 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
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/62Absorption based systems
    • 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
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/14Thermal energy storage

Abstract

The invention discloses a solar seasonal cold and hot combined air conditioning system which comprises four subsystems, namely a heat collecting system, a heat storing system, an absorbing type cold and hot combined system and a cold storing system. The heat collecting system mainly comprises a groove type heat collector and a high-temperature oil storing tank. A core part of the heat storing system is a phase-changing heat storing device. The absorbing type cold and hot combined system mainly comprises a generator, an absorber, an evaporator, a condenser, a solution heat exchanger and a cooling tower. The cold storing system mainly comprises an underground cold storing water pond. According to the solar seasonal cold and hot combined air conditioning system, a solar high-temperature heat collecting technology is used for obviously improving heat collecting efficiency, a reasonable and efficient heat storing device-heat exchanger structure is designed with medium-high temperature composite heat storing materials, so that a working state that energy is input intermittently and unstably and a working state that energy is output continuously and stably are separated, and stable operation of a solar air conditioner is achieved. Meanwhile, an energy storing device which can achieve seasonal cold storing is established, solar energy is stored and output in a seasonal mode, and cold and heat demanded quantity of the air conditioner is distributed according to different seasons.

Description

A kind of solar cross-season cold and heat combined supply air-conditioning system
Technical field
The present invention relates to a kind of solar energy that utilizes as energy source and power, and have the cold and heat combined supply air-conditioning system of cross-season heat-storage cool storage function, this technology contains technical fields such as solar energy heating technology, sorption type refrigerating technology, heat storage and cold accumulation technology.
Background technology
Solar airconditioning is exactly to utilize solar energy to freeze as the energy sources of Absorption Refrigerator or the complete set of equipments of heat supply.The solar airconditioning power consumption is few, and pollution-free nothing discharging moves quiet noiseless, is very promising utilization of new energy resources equipment.Current, solar airconditioning mainly is made up of plate solar collector, Absorption Refrigerator two big major parts.Plate solar collector is collected solar energy, produces 80 ℃~100 ℃ hot water, and hot water enters Absorption Refrigerator as driving heat source, and Absorption Refrigerator produces chilled water and enters air conditioning terminal.Though solar energy has many good qualities, be huge such as energy, general, permanent with harmless.Simultaneously, solar energy also has its tangible limitation as the utilizable energy source, and is low such as energy density, and caloradiance randomness is big, and has intermittence.At present the subject matter of solar airconditioning be exactly refrigerating efficiency low, be subjected to the big and job insecurity of solar radiation influence of fluctuations, solar energy can't be stored, heat can not be regulated according to actual needs, therefore can not guarantee annual reliable, efficient operation.
Above-mentioned limitation at solar airconditioning, the present invention uses the solar energy high-temperature heat collection technology to significantly improve collecting efficiency, high temperature composite heat storage material storage heater-heat exchanger structure efficiently reasonable in design in the employing, make energy unstable input at intermittence export two duties continually and steadily with energy and be separated, realize the stable operation of solar airconditioning.Simultaneously, foundation can realize striding the energy storage equipment of cold-storage in season, and solar energy is striden storage and the output in season, according to Various Seasonal the hot-cool demand amount difference of air-conditioning is allocated.
Summary of the invention
The objective of the invention is to overcome the technical problem that prior art exists, a kind of solar cross-season cold and heat combined supply air-conditioning system is provided.
For realizing above purpose, the present invention has taked following technical scheme: a kind of solar cross-season cold and heat combined supply air-conditioning system, comprise collecting system, hold over system, absorption type cold-hot co-feeding system and cold accumulation system, described collecting system comprises groove type heat collector and high temperature oil storage tank, hold over system comprises phase change heat accumulator, the absorption type cold-hot co-feeding system comprises generator, absorber, evaporimeter, condenser, solution heat exchanger and choke valve, and cold accumulation system comprises water storage pool; Groove type heat collector connects with the form of parallel connection, the two ends of groove type heat collector are connected with the high temperature oil storage tank respectively with second three-way diverter valve by first three-way diverter valve, and the high temperature oil storage tank also is connected with generator respectively with the 4th three-way diverter valve by the 3rd three-way diverter valve; Described phase change heat accumulator two ends are in parallel with the high temperature oil storage tank by second three-way diverter valve and first three-way diverter valve; Generator and condenser are arranged in the vacuum seal jar, absorber and evaporimeter are arranged in another vacuum seal jar, be connected with choke valve by solution heat exchanger respectively between two vacuum seal jars, water storage pool is imported and exported pipeline and is connected with the chilled water pipe of evaporimeter and the fan coil of air conditioning terminal (17) respectively with the 6th three-way diverter valve by the 5th three-way diverter valve.By the control of three-way diverter valve, air conditioning water can be from refrigeration machine, also can be from underground water storage pool.
This system also comprises cooling tower, and described cooling tower two ends are in parallel with the fan coil of building by the 7th three-way diverter valve and the 8th three-way diverter valve respectively.By the control of three-way diverter valve, the cooling water of intensification can heat to building, the cooling tower of also can flowing through cooling.
Collecting system: groove type heat collector generally is that the form with parallel connection links together, to shine solar light focusing on the reflective mirror in thermal-collecting tube by photopolymerization, the conduction oil that flows in the thermal-collecting tube, conduction oil absorb heat energy and reach a high temperature and enter the high temperature oil storage tank after (reaching as high as 300 ℃).In the high temperature oil storage tank, the heat source water heat exchange of conduction oil and absorbing refrigerator generators improves the heat source water temperature, drives Absorption Refrigerator work.Temperature reduces after the conduction oil heat exchange, flows into the groove type heat collector heat absorption again, moves in circles.
Hold over system: phase change heat accumulator is integrated phase-transition heat-storage/heat exchanger, and its inside is provided with two heat exchangers, and one is the heat absorption heat exchanger, and one is the heat release heat exchanger.High temperature heat conductive oil passes through the heat absorption heat exchanger with the heat transferred phase change heat storage material, phase change heat storage material by the heat release heat exchanger with the heat source water of heat transferred refrigeration machine or the health hot water of building, high temperature heat conductive oil does not circulate in phase change heat accumulator and high temperature oil storage tank simultaneously, determines high temperature heat conductive oil glide path by three-way diverter valve.
Cold accumulation system: water storage pool is to adopt insulation material at the bulky cold accumulation system of infrastructure.When the needs cold-storage, chilled water stores from entering water storage pool after evaporimeter comes out.When needs called cold-storage water, cold accumulating pond delivery port pipeline was connected with the fan coil of air conditioning terminal, and cold-storage water enters architecture refrigerating.
Absorption type cold-hot co-feeding system: be connected with heat source water in the pipe of absorbing refrigerator generators, heat source water circulates between absorbing refrigerator generators and high temperature oil storage tank, heat release when flowing into absorbing refrigerator generators is absorbed heat when flowing into the high temperature oil storage tank, moves in circles.
System of the present invention operation logic: system when operation, change solar radiant energy the heat energy of heat-conducting work medium (generally adopting high temperature heat conductive oil) into by collecting system, conduction oil heat energy is converted into heat source water or is stored by heat exchanger; Store the heat of heat collector surplus by hold over system, discharge at the appropriate time and give refrigeration machine or the domestic hot-water is provided; By cold accumulation system, can guarantee that the time low in solar energy intensity or that do not have a solar radiation realizes continuous cooling, also can cold be stored in the season that does not need cooling; The absorption type cold-hot co-feeding system utilizes high temperature heat source water to freeze, and the heat extraction effect by cooling water simultaneously improves cooling water temperature, and the cooling water of discharging is made the usefulness of heating, thereby realizes cold and heat combined supply.
The present invention compared with prior art has following advantage: the designed solar airconditioning co-feeding system of the present invention has the heat-collecting temperature height, it is fast to hold rate of heat release, the characteristics that year-round operation is stable, refrigerating and heat-supplying efficient is high.The present invention adopts the slot type of lightweight organic material exploitation cheaply heat collector, high-efficiency compact formula heat accumulation-heat transfer interchanger, obtain stable middle high temperature heat source, driving lithium-bromide absorption-type refrigerating machine refrigeration, provide stable hot and cold load to supply with building, and utilize underground water storage pool that chilled water is stored.When summer, building need freeze, heat collector absorbed solar energy as the driving heat source of refrigeration machine, and relied on phase change heat accumulator to carry out heat regulation, and the temperature of stable output heat source water guarantees the refrigeration machine steady operation.When no solar radiation, utilize chilled water that underground conservation pool holds to carry out cooling.When the spring and autumn building does not need the cold supply, Absorption Refrigerator is still worked, produce chilled water and deposit underground water storage pool in, during the work of winter refrigeration machine, not only can store chilled water, can also to the building heating, realize the intensive efficient utilization of annual solar energy with sending into the fan coil of air conditioning terminal after the cooling water heating
Description of drawings
Fig. 1 is for forming schematic diagram for system of the present invention.
The specific embodiment
Below in conjunction with the drawings and specific embodiments content of the present invention is described in further details.
Embodiment:
See also shown in Figure 1, a kind of solar cross-season cold and heat combined supply air-conditioning system, comprise collecting system, hold over system, absorption type cold-hot co-feeding system and cold accumulation system, described collecting system comprises groove type heat collector 2 and high temperature oil storage tank 5, hold over system comprises phase change heat accumulator 1, the absorption type cold-hot co-feeding system comprises generator 6, absorber 10, evaporimeter 12, condenser 13, solution heat exchanger 9 and choke valve 14, and cold accumulation system comprises water storage pool 11; Groove type heat collector 2 connects with the form of parallel connection, the two ends of groove type heat collector 2 are connected with high temperature oil storage tank 5 respectively with second three-way diverter valve 4 by first three-way diverter valve 3, and high temperature oil storage tank 5 also is connected with generator 6 respectively with the 4th three-way diverter valve 8 by the 3rd three-way diverter valve 7; Phase change heat accumulator 1 two ends are in parallel with high temperature oil storage tank 5 by second three-way diverter valve 4 and first three-way diverter valve 3;
Generator 6 and condenser 13 are arranged in the vacuum seal jar, absorber 10 and evaporimeter 12 are arranged in another vacuum seal jar, be connected with choke valve 14 by solution heat exchanger 9 respectively between two vacuum seal jars, water storage pool 11 is imported and exported by the 5th three-way diverter valve 15 and is connected with the chilled water pipe of evaporimeter 12 with the 6th three-way diverter valve 16, and water storage pool 11 delivery port pipelines also are connected with the fan coil 17 of air conditioning terminal by the 5th three-way diverter valve 15.
Also comprise cooling tower 20, cooling tower 20 two ends are in parallel with the fan coil 17 of building by the 7th three-way diverter valve 21 and the 8th three-way diverter valve 22 respectively.
Below describe by the operation of the system in summer, spring and autumn, winter respectively:
Summer: groove type heat collector 2 focusing sunlight are to thermal-collecting tube, high temperature heat conductive oil circulates in thermal-collecting tube and high temperature oil storage tank 5, constantly by the sun heat radiation heat temperature raising, after reaching the lower limit of design temperature scope, open the 3rd three-way diverter valve 7 and the 4th three-way diverter valve 8, make the heat source water and the high temperature heat conductive oil that circulate in the refrigerator generators 6 carry out heat exchange in oil storage tank, heat source water is warmed up to and can drives refrigeration machine after the uniform temperature and begin refrigeration.When the high temperature heat conductive oil temperature surpass set the higher limit of temperature range after, first reversal valve 3, second reversal valve 4 begins commutation, high temperature heat conductive oil no longer flows into oil storage tank, but enter phase change heat accumulator 1, in phase change heat accumulator 1, with phase-change material generation heat exchange, with the heat transferred phase-change material, thereby heat is stored in the phase change heat accumulator 1.After phase change heat accumulator 1 temperature reaches certain value, can be by changing the 3rd three-way diverter valve 7 and the 4th three-way diverter valve 8, make the heat source water and the phase change heat accumulator 1 that circulate in the refrigerator generators 6 carry out heat exchange, realize that phase change heat accumulator 1 also can drive the refrigeration machine refrigeration when no solar radiation, can can't not make the refrigeration machine steady operation because solar radiation is not enough.Simultaneously, by switch first stop valve 18 and second stop valve 19, realize externally providing health hot water.
Spring and autumn: the spring and autumn building does not generally need cooling, but in order to take full advantage of solar energy, the running refrigerating machine that also does as usual, its thermal-arrest process is identical with above-mentioned explanation with heat-accumulating process.By changing the 5th three-way diverter valve 15 and the 6th three-way diverter valve 16, make the chilled water of producing no longer enter the fan coil 17 of building, but enter underground water storage pool 11, chilled water moves in circles in underground water storage pool 11 and evaporator of refrigerator 12, constantly cooling, the purpose of realization storing frozen water.When do not have solar radiation summer for a long time, by changing the 5th three-way diverter valve 15 and the 6th three-way diverter valve 16, make the chilled water that stores in the underground water storage pool 11 enter the fan coil 17 of building, realize the stable cooling of system.
Winter: winter, building did not need cooling yet, in order to take full advantage of solar energy, and utilized Absorption Refrigerator to realize the purpose of heating, as usual start refrigeration machine, its thermal-arrest process, heat-accumulating process, process of cool are identical with above-mentioned explanation, are not repeated, and this section introduces the heating process.The heat source water heat release that circulates in the generator 6 of refrigeration machine, the chilled water heat release that circulates in evaporimeter 12, cooling water is the series circulation heat absorption in absorber 10 and condenser 13, and cooling water temperature is raise gradually.Cooling water enters absorber during summer after cooling tower 20 coolings, change the 7th three-way diverter valve 21 during winter and the 8th three-way diverter valve 22 makes cooling water no longer enter cooling tower 20, but the cooling water after will heating up enters the fan coil 17 of building as heating water, is the building heating.Cooling water behind the radiating and cooling flows through the 8th three-way diverter valve 22, enters absorber 10, the next heating circulation of beginning.
Above-listed detailed description is at the specifying of possible embodiments of the present invention, and this embodiment is not in order to limiting claim of the present invention, and the equivalence that all the present invention of disengaging do is implemented or change, all should be contained in the claim of this case.

Claims (2)

1. solar cross-season cold and heat combined supply air-conditioning system, it is characterized in that: comprise collecting system, hold over system, absorption type cold-hot co-feeding system and cold accumulation system, described collecting system comprises groove type heat collector (2) and high temperature oil storage tank (5), hold over system comprises phase change heat accumulator (1), the absorption type cold-hot co-feeding system comprises generator (6), absorber (10), evaporimeter (12), condenser (13), solution heat exchanger (9) and choke valve (14), and cold accumulation system comprises water storage pool (11);
Groove type heat collector (2) connects with the form of parallel connection, the two ends of groove type heat collector (2) are connected with high temperature oil storage tank (5) respectively with second three-way diverter valve (4) by first three-way diverter valve (3), and high temperature oil storage tank (5) also is connected with generator (6) respectively with the 4th three-way diverter valve (8) by the 3rd three-way diverter valve (7);
Described phase change heat accumulator (1) two ends are in parallel with high temperature oil storage tank (5) by second three-way diverter valve (4) and first three-way diverter valve (3);
Generator (6) and condenser (13) are arranged in the vacuum seal jar, and absorber (10) and evaporimeter (12) are arranged in another vacuum seal jar, be connected with choke valve (14) by solution heat exchanger (9) respectively between two vacuum seal jars,
Water storage pool (11) is imported and exported pipeline and is connected with the chilled water pipe of evaporimeter (12) and the fan coil (17) of air conditioning terminal respectively with the 6th three-way diverter valve (16) by the 5th three-way diverter valve (15).
2. solar cross-season cold and heat combined supply air-conditioning system according to claim 1, it is characterized in that: also comprise cooling tower (20), described cooling tower (20) two ends are in parallel with the fan coil (17) of building by the 7th three-way diverter valve (21) and the 8th three-way diverter valve (22) respectively.
CN2013102055682A 2013-05-28 2013-05-28 Solar seasonal cold and hot combined air conditioning system Pending CN103277856A (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103629769A (en) * 2013-12-06 2014-03-12 沈天昱 Integration device of solar central air conditioning system and heat exchange method
CN103759354A (en) * 2014-01-07 2014-04-30 广州万宝集团有限公司 Solar drive two-stage lithium bromide refrigerating unit air conditioning system
CN104374025A (en) * 2014-11-17 2015-02-25 北京工业大学 Three-phase energy storage method of solar air conditioner
CN105423471A (en) * 2015-12-31 2016-03-23 河南省电力勘测设计院 Comprehensive utilization energy-saving system for natural resources of oil-fired thermal plant in tropical desert region
CN108151359A (en) * 2018-01-02 2018-06-12 重庆大学 A kind of two level heat accumulating type domestic solar utilizes system
CN108167989A (en) * 2018-02-02 2018-06-15 晖保智能科技(上海)有限公司 A kind of building roof interlayer and basement energy conserving system
CN110118448A (en) * 2019-05-14 2019-08-13 湖南科技大学 Heat storage and cold accumulation type combustion gas assists solar absorption ammonium hydroxide cold supply system

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103629769A (en) * 2013-12-06 2014-03-12 沈天昱 Integration device of solar central air conditioning system and heat exchange method
CN103629769B (en) * 2013-12-06 2016-09-28 沈天昱 Solar energy central air conditioning system integrating device and heat-exchange method
CN103759354A (en) * 2014-01-07 2014-04-30 广州万宝集团有限公司 Solar drive two-stage lithium bromide refrigerating unit air conditioning system
CN103759354B (en) * 2014-01-07 2016-08-31 广州万宝集团有限公司 A kind of Driven by Solar Energy two-stage BrLi chiller air conditioning system
CN104374025A (en) * 2014-11-17 2015-02-25 北京工业大学 Three-phase energy storage method of solar air conditioner
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CN105423471A (en) * 2015-12-31 2016-03-23 河南省电力勘测设计院 Comprehensive utilization energy-saving system for natural resources of oil-fired thermal plant in tropical desert region
CN108151359A (en) * 2018-01-02 2018-06-12 重庆大学 A kind of two level heat accumulating type domestic solar utilizes system
CN108151359B (en) * 2018-01-02 2020-06-02 重庆大学 Domestic solar energy utilization system of second grade heat accumulation formula
CN108167989A (en) * 2018-02-02 2018-06-15 晖保智能科技(上海)有限公司 A kind of building roof interlayer and basement energy conserving system
CN110118448A (en) * 2019-05-14 2019-08-13 湖南科技大学 Heat storage and cold accumulation type combustion gas assists solar absorption ammonium hydroxide cold supply system
CN110118448B (en) * 2019-05-14 2021-04-06 湖南科技大学 Heat storage cold storage type gas auxiliary solar energy absorption type ammonia water cooling system

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