CN1415923A - Heating system of solar energy heat pump in type of accumulating heat by soil as well as method for supplying heat - Google Patents

Heating system of solar energy heat pump in type of accumulating heat by soil as well as method for supplying heat Download PDF

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Publication number
CN1415923A
CN1415923A CN02146305A CN02146305A CN1415923A CN 1415923 A CN1415923 A CN 1415923A CN 02146305 A CN02146305 A CN 02146305A CN 02146305 A CN02146305 A CN 02146305A CN 1415923 A CN1415923 A CN 1415923A
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China
Prior art keywords
heat
solar
outlet
soil
thermal collector
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CN02146305A
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Chinese (zh)
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CN1209588C (en
Inventor
杨昭
张世钢
程珩
吴志光
郁文红
赵海波
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Tianjin University
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Tianjin University
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Priority to CN021254435 priority Critical
Priority to CN02125443.5 priority
Priority to CN02125443 priority
Application filed by Tianjin University filed Critical Tianjin University
Priority to CNB021463050A priority patent/CN1209588C/en
Publication of CN1415923A publication Critical patent/CN1415923A/en
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Publication of CN1209588C publication Critical patent/CN1209588C/en
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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
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/10Geothermal energy
    • 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
    • Y02E10/40Solar thermal energy, e.g. solar towers

Abstract

This invention discloses a solar energy heat pump heating system of earth heat storage solar energy accumulator, heat exchanger, heat pump device and circulating pump in which outlet of solar accumulator connects to the inlet of heat exchanger, which outlet connects with the inlet of solar energy accumulator via heat pump and circulation pump so as to form heat-carrying fluid loop, side inlet or outlet of the heat pump connects with users, heat exchanger is set under the earth as the heat retainer suitable for winter use.

Description

Soil thermal storage formula solar heat pump heating system and heat supply method
Technical field
The present invention relates to a kind of energy heating system and heat supply method of utilizing, more particularly, relate to utilize solar energy heat distribution system and heat supply method.
Background technology
Heat pump is a kind of generally acknowledged energy-efficient heat supplying air conditioning mode, but when it moves at the northern area Winter heat supply, the air source exists shortcomings such as bulky, the frequent defrosting of outdoor heat exchanger, the coefficient of performance be lower, underground water source exists brokenly problems such as ring groundwater resources, and soil source has shortcomings such as initial cost height.
Solar energy is a kind of abundant, clean, safe energy, and since the seventies, in view of the finiteness of conventional energy resource supply and the increase of environmental protection pressure, many in the world countries have started the upsurge of development and use solar energy.Also having some problems yet effectively utilize solar energy at present, mainly is that the efficient of collection, conversion and storage is not high.
Heat pump and solar-heating cooperation (being solar heat pump), utilize heat pump that the hot water of solar thermal collector is further heated up, heat-collecting temperature just can for 10~20 ℃, adopt paneless flat plate collector just can reach very high collecting efficiency, the thermal-arrest cost is very low, the cooling water heat liberation board usefulness at night when this heat collector can also freeze as summer can also provide the domestic hot-water whole year simultaneously, has improved utilization rate of equipment and installations greatly.Because inevitable defrosting circulation because the input of solar energy will improve the evaporating temperature of heat pump, improved the coefficient of performance of heat pump assembly, thereby has the considerable energy saving characteristic simultaneously when solar heat pump need not to adopt air heat exchanger.But because the unreliability and the discontinuity of solar energy, accumulation of heat is the necessary condition that solar energy utilizes, and accumulation of heat can be dwindled not matching on time or flow between the energy availability and demand, plays the important energy saving effect.And common water accumulation of heat or the phase-transition heat-storage of making makes that heat storage tank is bulky, cost is high.And when winter or solar energy deficiency, solar thermal collector can not heat up heat transport fluid, and system can not heat supply.
Summary of the invention
The objective of the invention is to overcome weak point of the prior art, a kind of environmental protection, simple in structure is provided, dependable performance, cost is low, solar heat pump heating system and heat supply method that heating time is long.
Technical scheme of the present invention is:
A kind of soil thermal storage formula solar heat pump heating system, it comprises solar thermal collector 1, heat pump assembly 3 and circulating pump 4, the outlet of solar thermal collector 1 links to each other with the import of heat exchanger 2, the outlet of heat exchanger 2 links to each other with the import of solar thermal collector 1 by heat pump assembly 3, circulating pump 4, thereby form the closed circulation passage of heat transport fluid, the heat supply side of heat pump assembly 3 is imported and exported and is linked to each other with the user, and heat exchanger 2 is embedded in the underground, with the heat storage of soil as system.In addition, the inlet of solar thermal collector 1, outlet and circulating pump 4 can also be connected with triple valve 6 respectively.
A kind of soil thermal storage formula solar heat pump heating system, comprise solar thermal collector 1, heat pump assembly 3, circulating pump 4, the outlet of solar thermal collector 1 links to each other with the import of heat exchanger 2, the outlet of heat exchanger 2 links to each other with the import of solar thermal collector 1 by circulating pump 4, heat pump assembly 3, thereby form the closed circulation passage of heat transport fluid, heat exchanger 2 is arranged in the underground, with the heat storage of soil as system.
A kind of soil thermal storage formula solar heat pump heating system, comprise solar thermal collector 1, heat pump assembly 3, circulating pump 4, the outlet of solar thermal collector 1 links to each other with circulating pump 4, the outlet of circulating pump 4 links to each other with the import of heat exchanger 2, the outlet of heat exchanger 2 links to each other with the import of solar thermal collector 1 by heat pump assembly 3, thereby form the closed circulation passage of heat transport fluid, heat exchanger 2 is arranged in the underground, with the heat storage of soil as system.
Solar thermal collector 1 can scribble the flat plate collector of spectral selection material for uncovered plate, the insulation of nothing bottom, surface in the above-mentioned soil thermal storage formula solar energy heat pump system, and heat pump assembly 3 is a mechanical compression type or absorption.
A kind of heat supply method of soil thermal storage formula solar heat pump heating system, it comprises the following steps: that (1) imbed heat exchange in the underground at device 2; (2) link to each other with the import of heat exchanger 2 with the outlet of pipeline with solar thermal collector 1, the outlet of heat exchanger 2 links to each other with the import of solar thermal collector 1 by heat pump assembly 3, circulating pump 4, thereby forms the closed circulation passage of heat transport fluid; (3) link to each other with hot user's heating network with the heat supply side import and export of pipeline heat pump assembly 3; (4) heat transport fluid charges into system, by solar thermal collector 1 thermal-arrest; (5) open circulating pump 4, heat transport fluid circulates in system; (6) start heat pump assembly, give user's heat supply.
The present invention has following advantage: replace used water or phase-transition heat-storage groove usually with the earth soil, utilize the thermal capacity accumulation of heat of soil and play balanced load, remedy the unreliability and the discontinuity of solar energy, Winter heat supply can be realized, suitable for four seasons, improved the utilization rate of system, the middle part and the northern area that are specially adapted to cold in winter use.The thermal capacity of the earth is very big, does not also need to do container, and is cheap and easy to get, and can take up an area of the space by saving equipment.
Description of drawings Fig. 1 is a soil thermal storage formula solar heat pump heating system schematic diagram; Fig. 2 is a soil thermal storage formula solar heat pump heating system schematic diagram; Fig. 3 is a soil thermal storage formula solar heat pump heating system schematic diagram; Fig. 4 is a soil thermal storage formula solar heat pump heating system schematic diagram.Among the figure: 1. solar thermal collector; 2. heat exchanger; 3. heat pump assembly;
4. circulating pump; 5. heat-carrying agent; 6. triple valve.
The present invention is further illustrated below in conjunction with accompanying drawing for the specific embodiment:
Whole system is made up of solar thermal collector 1, heat exchanger 2, heat pump assembly 3, circulating pump 4.According to present technique field usual way heat exchanger 2 is embedded in (generally below frozen soil) in the underground.Link to each other with the import of heat exchanger 2 with the outlet of pipeline with solar thermal collector 1, the outlet of heat exchanger 2 links to each other with the import of solar thermal collector 1 by heat pump assembly 3, circulating pump 4; Perhaps link to each other with the import of heat exchanger 2 with the outlet of pipeline with solar thermal collector 1, the outlet of heat exchanger 2 links to each other with the import of solar thermal collector 1 by circulating pump 4, heat pump assembly 3; Perhaps link to each other with circulating pump 4 with the outlet of pipeline with solar thermal collector 1, the outlet of circulating pump 4 links to each other with the import of heat exchanger 2, the outlet of heat exchanger 2 links to each other with the import of solar thermal collector 1 by heat pump assembly 3, thereby form the closed circulation passage of heat transport fluid, the heat supply side of heat pump assembly 3 is imported and exported and is linked to each other with hot user.Heat pump assembly is a mechanical compression type or absorption.
Heat transport fluid is water or anti-icing fluid, enters system by the valve of opening on the solar thermal collector.Under the driving of circulating pump 4, in system, circulate.Solar time is arranged daytime, heat collector is collected solar energy, and water or anti-icing fluid are heated in heat collector, and heat is taken to heat pump assembly 3, by heat pump further heat up the back flow to hot user by heat-carrying agent 5, the unnecessary heat that heat collector is collected is stored in the underground by heat exchanger 2; Night or overcast and rainy no solar time, water that circulates in the system or anti-icing fluid take out the heat in the soil by heat exchanger 2, flow to hot user after heating up by heat pump assembly 3.
The combination 6 of a triple valve or two two-way valves can be set in system, and an end of the combination 6 of triple valve or two two-way valves links to each other with the inlet of solar thermal collector 1, and an end links to each other with the outlet of solar thermal collector 1, and an end links to each other with circulating pump 4.During heat supply running, if the solar energy abundance, then the A road of triple valve 6 is closed, and water or anti-icing fluid all absorb heat by solar thermal collector 1; Adjust the flow of A, B two-way when solar energy is not enough, partly or entirely water or anti-icing fluid by solar thermal collector 1, directly are not sent to heat exchanger 2, absorb the heat that stores in the underground, flow to heat pump again, after heating up by heat pump, flow to the user by heating medium 5.

Claims (7)

1. soil thermal storage formula solar heat pump heating system, comprise solar thermal collector [1], heat pump assembly [3] and circulating pump [4], it is characterized in that, the outlet of described solar thermal collector [1] links to each other with the import of heat exchanger [2], the outlet of heat exchanger [2] links to each other with the import of solar thermal collector [1] by heat pump assembly [3], circulating pump [4], thereby form the closed circulation passage of heat transport fluid, described heat exchanger [2] is arranged in the underground, with the heat storage of soil as system.
2. soil thermal storage formula solar heat pump heating system according to claim 1 is characterized in that, inlet, outlet and the circulating pump [4] of described solar thermal collector [1] is connected with triple valve [6] respectively.
3. soil thermal storage formula solar heat pump heating system according to claim 1 is characterized in that described solar thermal collector [1] is a flat plate collector.
4. soil thermal storage formula solar heat pump heating system according to claim 1 is characterized in that described heat pump assembly [3] is a mechanical compression type or absorption.
5. soil thermal storage formula solar heat pump heating system, comprise solar thermal collector [1], heat pump assembly [3] and circulating pump [4], it is characterized in that, the outlet of described solar thermal collector [1] links to each other with the import of heat exchanger [2], the outlet of heat exchanger [2] links to each other with the import of solar thermal collector [1] by circulating pump [4], heat pump assembly [3], thereby form the closed circulation passage of heat transport fluid, described heat exchanger [2] is arranged in the underground, with the heat storage of soil as system.
6. soil thermal storage formula solar heat pump heating system, comprise solar thermal collector (1), heat pump assembly [3] and circulating pump [4], it is characterized in that, the outlet of described solar thermal collector [1] links to each other with circulating pump [4], the outlet of circulating pump [4] links to each other with the import of heat exchanger [2], the outlet of heat exchanger [2] links to each other with the import of solar thermal collector [1] by heat pump assembly [3], thereby form the closed circulation passage of heat transport fluid, described heat exchanger [2] is arranged in the underground, with the heat storage of soil as system.
7. the heat supply method of a soil thermal storage formula solar heat pump heating system is characterized in that, it comprises the following steps: that (1) is embedded in heat exchanger [2] in the underground; (2) link to each other with the import of heat exchanger [2] with the outlet of pipeline with solar thermal collector [1], the outlet of heat exchanger [2] links to each other with the import of solar thermal collector [1] by heat pump assembly [3], circulating pump [4]; (3) link to each other with hot user's heating network with the heat supply side import and export of pipeline heat pump assembly [3]; (4) heat transport fluid charges into system, by solar thermal collector [1] thermal-arrest; (5) open circulating pump [4], heat transport fluid is circulated in system; (6) start heat pump assembly [3] and give user's heat supply.
CNB021463050A 2002-08-08 2002-10-21 Heating system of solar energy heat pump in type of accumulating heat by soil as well as method for supplying heat Expired - Fee Related CN1209588C (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CN021254435 2002-08-08
CN02125443.5 2002-08-08
CN02125443 2002-08-08
CNB021463050A CN1209588C (en) 2002-08-08 2002-10-21 Heating system of solar energy heat pump in type of accumulating heat by soil as well as method for supplying heat

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNB021463050A CN1209588C (en) 2002-08-08 2002-10-21 Heating system of solar energy heat pump in type of accumulating heat by soil as well as method for supplying heat

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CN1415923A true CN1415923A (en) 2003-05-07
CN1209588C CN1209588C (en) 2005-07-06

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100451492C (en) * 2007-01-11 2009-01-14 清华大学 Integrated air-conditioning system of solar-assisted soil source CO2 trans-critical heat pump
CN101943438A (en) * 2010-11-05 2011-01-12 东南大学 Solar geothermal heating device
CN102168661A (en) * 2011-04-08 2011-08-31 杭州锅炉集团股份有限公司 Composite energy source solar energy high-temperature heat power generating system
CN101737950B (en) * 2010-01-07 2012-06-06 浙江大学 Seasonal soil heat storage and release-based solar-heat pump heating system for industrial turtle raising field
CN103988735A (en) * 2014-06-04 2014-08-20 定西市金源农业发展有限责任公司 Solar soil heating system for automatically controlling solar greenhouse
CN105318410A (en) * 2015-10-16 2016-02-10 董书囤 Single-storey house solar heating method
CN109780738A (en) * 2019-02-20 2019-05-21 广州供电局有限公司 Solar energy storage converting system
CN112923580A (en) * 2021-03-25 2021-06-08 中国科学院西北生态环境资源研究院 Self-circulation anti-freezing expansion heat-collecting device and roadbed thereof

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100451492C (en) * 2007-01-11 2009-01-14 清华大学 Integrated air-conditioning system of solar-assisted soil source CO2 trans-critical heat pump
CN101737950B (en) * 2010-01-07 2012-06-06 浙江大学 Seasonal soil heat storage and release-based solar-heat pump heating system for industrial turtle raising field
CN101943438A (en) * 2010-11-05 2011-01-12 东南大学 Solar geothermal heating device
CN102168661A (en) * 2011-04-08 2011-08-31 杭州锅炉集团股份有限公司 Composite energy source solar energy high-temperature heat power generating system
CN102168661B (en) * 2011-04-08 2012-08-29 杭州锅炉集团股份有限公司 Composite energy source solar energy high-temperature heat power generating system
CN103988735A (en) * 2014-06-04 2014-08-20 定西市金源农业发展有限责任公司 Solar soil heating system for automatically controlling solar greenhouse
CN105318410A (en) * 2015-10-16 2016-02-10 董书囤 Single-storey house solar heating method
CN109780738A (en) * 2019-02-20 2019-05-21 广州供电局有限公司 Solar energy storage converting system
CN112923580A (en) * 2021-03-25 2021-06-08 中国科学院西北生态环境资源研究院 Self-circulation anti-freezing expansion heat-collecting device and roadbed thereof

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