CN101476789B - Heat storage and heat supply system used for solar heat collection equipment and its operation method - Google Patents

Heat storage and heat supply system used for solar heat collection equipment and its operation method Download PDF

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Publication number
CN101476789B
CN101476789B CN2009100677618A CN200910067761A CN101476789B CN 101476789 B CN101476789 B CN 101476789B CN 2009100677618 A CN2009100677618 A CN 2009100677618A CN 200910067761 A CN200910067761 A CN 200910067761A CN 101476789 B CN101476789 B CN 101476789B
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heat
storing
collection equipment
solar energy
storage
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CN101476789A (en
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秦荣英
张之绥
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秦荣英
张之绥
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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
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00Integration of renewable energy sources in buildings
    • Y02B10/20Solar thermal
    • 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
    • Y02E10/44Heat exchange 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
    • 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
    • Y02E70/00Other energy conversion or management systems reducing GHG emissions
    • Y02E70/30Systems combining energy storage with energy generation of non-fossil origin

Abstract

The invention provides a heat storing-supplying system for solar heat-collection equipment, which is characterized in that the output end of the solar heat-collection equipment is provided with a heat storage system which is connected with a heat-using end and consists of a heat storage device and a heat exchange device; the heat storage device consists of a heat absorption structure, a heat preservation structure and a circulation pipeline; under normal conditions, a heat exchanger is connected with the heat-using end to supply heat; and under abnormal conditions, the heat storage device connects stored heat energy with the heat-using end so as to guarantee the continuous heat-using state. A working method of the system comprises the following steps that: the solar heat-collection equipment collects solar energy and transfers heat into the heat exchanger and the heat storage device; a working medium generated by the heat exchanger enters the heat-using end; and the working medium in the heat storage device stores the heat through a solid-state heat storage working medium and completes continuous heat supply under abnormal conditions if necessary. The heat storing-supplying system has the advantages that the system is free from pollution, cheap to obtain, few in investment and long in period of investment return and reduces electricity-using cost as solar energy is inexhaustible and belongs to clean energy.

Description

A kind of heat storage and heat supply system and method for work thereof that is used for solar energy heat collection equipment
(1) technical field:
The present invention relates to be used for the heat reservoir of solar energy heat collection equipment, particularly a kind of heat reservoir and heat supply end exploitation and method of work thereof that is used for solar energy heat collection equipment.
(2) background technology:
Solar energy becomes the important energy source approach of the human sustainable use after 21 century with uniqueness never exhausted, clean environmental protection, and it is described as is the optimal energy.At present, solar energy heat collection equipment technology domestic industry is in international most advanced level generally, the solar energy heat collection equipment of domestic production can produce 1100 ℃ of high temperature after absorbing solar radiation, for solar-heating generating provides reliable basis, also very extensive in the application in worker, agricultural, fields at different levels such as civilian.China's solar energy resources is very abundant, and theoretical reserves reach annual 17000 hundred million tons of standard coals, so the potentiality of solar energy resources development and use are boundless.There is abundant solar energy resources in China, compares with the other countries of same latitude, and is close with the U.S., than Europe, Japanese much superior, thereby huge exploitation potential arranged.
From traditional electrification technique as well as, thermal power generation is to utilize coal-fired 330 ℃ of water heating to be elevated to boiling point more than 3 times, surpasses can produce a large amount of steams when critical, and pushing turbine drives generator for electricity generation then.And solar energy thermal-power-generating is to utilize the heat exchange of solar energy heating conduction oil, make steam turbine drive generator for electricity generation, can also inversion be that direct current is stored in the UPS electric power system, with special-purpose storage battery (big electric weight) storage electric energy, inversion becomes square wave alternating-current electricity supply user to be used, and the uniqueness of its clean environment firendly makes it to become the optimal energy, therefore, the solar energy conversion is the important topic of current researcher, generally is subjected to the attention of the whole society.But solar energy is collected the restriction that will be subjected to factors such as weather, season, to the continuous use formation adverse effect of the energy.
(3) summary of the invention:
The object of the present invention is to provide a kind of heat storage and heat supply system and method for work thereof that is used for solar energy heat collection equipment; this system adopts solar energy heat collection equipment to collect a large amount of heat energy; except under normal circumstances using; can also deposit heat reservoir in; supply is developed, is used with the hot junction; make solar thermal collection system have the heating effect of continous-stable, this system applies is in industry, agricultural and civilianly have a very positive meaning.
Technical scheme of the present invention: a kind of heat storage and heat supply system that is used for solar energy heat collection equipment, comprise solar energy heat collection equipment, it is characterized in that heat reservoir being housed at the output of solar energy heat collection equipment, the output of heat reservoir connects with heat exploitation end; Said heat reservoir is to be made of heat-storing device and heat-exchange device, and heat-storing device is to be made of heat-absorbing structure and insulation construction, circulation line; The heat exchanger and the heat-storing device of said heat reservoir are controlled according to adjusting device, under the normal solar thermal-arrest situation, the output of heat exchanger directly connects uses the hot junction heat supply, under the improper solar energy heating situation, heat-storing device is activated, the a large amount of heat energy that store are continued connection hot junction heat supply, guarantee to use continuously hot state.
The above-mentioned said adjusting device that is used for heat reservoir is the temperature control automatic regulating valve of commercially available different size, and this valve is regulated the flow direction of heat-conducting work medium according to the operating mode needs.
The heat-absorbing structure of the heat-storing device in the above-mentioned said heat reservoir is by heat conduction solid working medium, the heat-conducting work medium that circulates constitutes, the circulation line of said heat-storing device is imported and exported by heat-conducting work medium circulation line and heat-conducting work medium and is constituted, the insulation construction of said heat-storing device is by exterior waterproof coating, reinforced concrete wall, concrete heat-insulation wall, the insulation packing layer, heat accumulation solid working medium and heat accumulating body of wall constitute, exterior waterproof coating places the outermost layer of whole system, exterior waterproof coating and and concrete heat-insulation wall between be reinforced concrete wall, be the insulation packing layer between concrete heat-insulation wall and the heat accumulating body of wall, the heat-conducting work medium that circulates according to the heat-conducting work medium circulating line is arranged in the heat accumulating body of wall, the heat-conducting work medium circulating line has heat conduction solid working medium outward, and the heat-conducting work medium circulating line has import and export to be connected respectively.
The circulation line of above-mentioned said heat-storing device adopts metal tube circulation steel pipe.
Heat accumulation solid working medium in the above-mentioned said heat-storing device adopts:
Zircon sand (ZrSIO 4), bauxite (Al (OH) 3), graphite (C),
Wollastonite (CaSiO 3), barite (BaSO 4), crystal quartz (SiO 4),
Celestine (SrSO 4); Above material has high thermal conductivity and thermal storage performance, adopts monomer to use in system.
Above-mentioned said solar energy heat collection equipment adopts curtain wall or matrix, can in parallelly use between each thermal-arrest unit.
The above-mentioned said devices such as thermal power generation, worker, agricultural, civilian heating, refrigeration, heating, oven dry that comprise with the hot junction are with warm.
Above-mentionedly saidly can act on generator for electricity generation through steam turbine with the thermal power generation in the hot junction, heat exchanger produces steam or superheated water, promotes steam turbine and rotates, and drives generator work.
A kind of method of work that is used for the heat storage and heat supply system of solar energy heat collection equipment is characterized in that it may further comprise the steps:
(1) solar energy heat collection equipment is collected solar radiation energy;
(2) solar radiation energy that solar energy heat collection equipment is collected enters heat reservoir according to working medium conduction, imports heat in the heat exchanger working medium through heat-transfer working medium, and unnecessary heat deposits heat-storing device in;
(3) the heated working medium of heat exchanger generation directly enters and uses the hot junction;
(4) enter heated working medium in the heat-storing device, solid-state heat accumulation working medium is with its heat absorption, storage in heat-storing device;
(5) the heated working medium of Chu Cuning is finished the continuous heat supply under the improper solar energy heating situation in needs;
(6) the heated working medium in the heat reservoir is offered by step (3) and step (5) and uses the hot junction, promptly obtains continuous heat supply with the hot junction.
Heat-transfer working medium in the above-mentioned said step (2) adopts conduction oil.
Superiority of the present invention is: (1) solar irradiation energy is inexhaustible, nexhaustible, does not have exhausted danger; (2) the solar irradiation energy belongs to clean energy resource, and is pollution-free, nuisanceless; (3) obtain energy cheapness; (4) mankind can freely utilize, and can take nearby with the thermal source place at need, save and take cost; (5) small investment, the period of investment return is long, disposable input, payoff period 3-5, lifetime was 20 years, when being used for solar electrical energy generation, then existing other thermal power generation electricity prices of average electrical price ratio are low by 50%, greatly reduce electric cost; (6) heat-transfer working medium in the system adopts conduction oil, is convenient to system maintenance, and maintenance cost is reduced greatly.
(4) description of drawings:
Accompanying drawing 1 is a kind of heat storage and heat supply system of solar energy heat collection equipment and system architecture schematic diagram of method of work thereof of being used for involved in the present invention;
Accompanying drawing 2 is a kind of heat storage and heat supply system of solar energy heat collection equipment and structural representation of method of work heat-storing device thereof of being used for involved in the present invention;
Wherein: 1 incidence matrix for the solar energy heat collection equipment composition, 2 is heat-storing device, and 3 is heat exchanger I, and 4 is steam turbine, and 5 is generator, and 6 is the UPS electric storage device, and 7 is heat exchanger II, and 8 is adjusting device; 2-1 is an exterior waterproof coating, 2-2 is the heat-conducting work medium import, 2-3 is a reinforced concrete wall, and 2-4 is a concrete heat-insulation wall, and 2-5 is the insulation packing layer, 2-6 is a heat accumulation solid working medium, 2-7 is a heat conduction solid working medium, and 2-8 is the heat-conducting work medium circulating line, and 2-9 is the heat-conducting work medium that circulates, 2-10 is the heat accumulating body of wall, and 2-11 is the heat-conducting work medium outlet.
(5) specific embodiment:
Embodiment: a kind of heat storage and heat supply system (seeing Fig. 1-2) that is used for solar energy heat collection equipment, comprise solar energy heat collection equipment 1, it is characterized in that heat reservoir being housed at the output of solar energy heat collection equipment 1, the output of heat reservoir connects with heat exploitation end; Said heat reservoir is to be made of heat-storing device 2 and heat-exchange device I, II, and heat-storing device 2 is to be made of heat-absorbing structure and insulation construction, circulation line; The heat exchanger of said heat reservoir and heat-storing device 2 are according to adjusting device 8 controls, under the normal solar thermal-arrest situation, the output of heat exchanger I, II directly connects uses the hot junction heat supply, under the improper solar energy heating situation, heat-storing device 2 is activated, the a large amount of heat energy that store are continued connection hot junction heat supply, guarantee to use continuously hot state.
The above-mentioned said adjusting device 8 that is used for heat reservoir is temperature control automatic regulating valves of commercially available different size, and this valve is regulated the flow direction of heat-conducting work medium according to the operating mode needs.
The heat-absorbing structure of heat-storing device 2 (see figure 2)s in the above-mentioned said heat reservoir is by heat conduction solid working medium 2-7, the heat-conducting work medium 2-9 that circulates constitutes, the circulation line of said heat-storing device 2 imports and exports 2-2 by heat-conducting work medium circulation line 2-8 and heat-conducting work medium and 2-11 constitutes, the insulation construction of said heat-storing device 2 is by exterior waterproof coating 2-1, reinforced concrete wall 2-3, concrete heat-insulation wall 2-4, insulation packing layer 2-5, heat accumulation solid working medium 2-6 and heat accumulating body of wall 2-10 constitute, exterior waterproof coating 2-1 places the outermost layer of whole system, exterior waterproof coating 2-1 and and concrete heat-insulation wall 2-4 between be reinforced concrete wall 2-3, be insulation packing layer 2-5 between concrete heat-insulation wall 2-4 and the heat accumulating body of wall 2-10, the heat-conducting work medium 2-9 that circulates according to heat-conducting work medium circulating line 2-8 is arranged in the heat accumulating body of wall 2-10, heat-conducting work medium circulating line 2-8 has heat conduction solid working medium 2-7 outward, and heat-conducting work medium circulating line 2-8 has the 2-2 of import and export to be connected with 2-11 respectively.
The circulation line 2-8 of above-mentioned said heat-storing device 2 adopts metal tube circulation steel pipe.
Heat accumulation solid working medium 2-6 in the above-mentioned said heat-storing device 2 adopts:
Zircon sand (ZrSIO 4), bauxite (Al (OH) 3), graphite (C),
Wollastonite (CaSiO 3), barite (BaSO 4), crystal quartz (SiO 4),
Celestine (SrSO 4); Above material has high thermal conductivity and thermal storage performance, adopts monomer to use in system.
Above-mentioned said solar energy heat collection equipment 1 adopts the matrix (see figure 1), the in parallel use between each thermal-arrest unit.
Above-mentioned said be the thermal power generation device with the hot junction, saidly act on generator for electricity generation through steam turbine with the thermal power generation in the hot junction, heat exchanger produces steam or superheated water, promotes steam turbine and rotates, and drives generator work.
A kind of method of work of the heat storage and heat supply system for solar energy heat collection equipment is characterized in that it may further comprise the steps:
(1) solar energy heat collection equipment is collected solar radiation energy;
(2) solar radiation energy of solar energy heat collection equipment being collected enters heat reservoir according to working medium conduction, imports working medium in the heat exchanger into through conduction oil, and waste heat deposits heat-storing device in;
(3) the heated working medium of heat exchanger generation directly enters and uses the hot junction;
(4) enter heated working medium in the heat-storing device, solid-state heat accumulation working medium is with its heat absorption, storage in heat-storing device;
(5) the heated working medium that stores is finished the continuous heat supply under the improper solar energy heating situation in needs;
(6) the heated working medium in the heat reservoir is offered by step (3) and step (5) and uses the hot junction, namely obtains continuous heat supply with the hot junction.

Claims (3)

1. a heat storage and heat supply system that is used for solar energy heat collection equipment comprises solar energy heat collection equipment, it is characterized in that at the output of solar energy heat collection equipment heat reservoir being housed, and the output of heat reservoir connects uses the hot junction; Said heat reservoir is to be made of heat-storing device and heat exchanger, and heat-storing device is to be made of heat-absorbing structure and insulation construction, circulation line; The heat exchanger and the heat-storing device of said heat reservoir are controlled according to adjusting device, under the normal solar thermal-arrest situation, the output of heat exchanger directly connects uses the hot junction heat supply, under the improper solar energy heating situation, heat-storing device is activated, the a large amount of heat energy that store are continued connection hot junction heat supply, guarantee to use continuously hot state; The heat-absorbing structure of the heat-storing device in the said heat reservoir is by heat conduction solid working medium, the heat-conducting work medium that circulates constitutes, the circulation line of said heat-storing device is imported and exported by heat-conducting work medium circulation line and heat-conducting work medium and is constituted, the insulation construction of said heat-storing device is by exterior waterproof coating, reinforced concrete wall, concrete heat-insulation wall, the insulation packing layer, heat accumulation solid working medium and heat accumulating body of wall constitute, exterior waterproof coating places the outermost layer of heat-storing device, exterior waterproof coating and and concrete heat-insulation wall between be reinforced concrete wall, be the insulation packing layer between concrete heat-insulation wall and the heat accumulating body of wall, the heat-conducting work medium that circulates according to the heat-conducting work medium circulating line is arranged in the heat accumulating body of wall, above-mentioned heat-conducting work medium circulation line has above-mentioned heat conduction solid working medium outward, and the heat-conducting work medium circulation line is imported and exported with heat-conducting work medium respectively and is connected.
2. according to the said a kind of heat storage and heat supply system that is used for solar energy heat collection equipment of claim 1, it is characterized in that the circulation line of said heat-storing device adopts metal tube circulation steel pipe.
3. according to the said a kind of heat storage and heat supply system that is used for solar energy heat collection equipment of claim 1, it is characterized in that the heat accumulation solid working medium in the said heat-storing device adopts:
Zircon sand (ZrSIO 4), bauxite (Al (OH) 3), graphite (C),
Wollastonite (CaSiO 3), barite (BaSO 4), crystal quartz (SiO 4),
Celestine (SrSO 4); Above material has high thermal conductivity and thermal storage performance, adopts monomer to use in system.
CN2009100677618A 2009-01-21 2009-01-21 Heat storage and heat supply system used for solar heat collection equipment and its operation method Expired - Fee Related CN101476789B (en)

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CN101476789B true CN101476789B (en) 2010-09-29

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CN102250590A (en) * 2011-05-20 2011-11-23 武汉理工大学 Method for preparing immersion thermal storage material for solar air conditioner
CN103047890A (en) * 2011-10-13 2013-04-17 刘君才 Static hybrid heat accumulator
CN102517855A (en) * 2011-12-03 2012-06-27 苏州方暨圆节能科技有限公司 Turbine rotor afterheat wind energy composite cloth drying device
CN102517854A (en) * 2011-12-03 2012-06-27 苏州方暨圆节能科技有限公司 Composite clothes drying device by utilizing waste heat of steam turbine rotor plate
CN103409597A (en) * 2013-08-03 2013-11-27 石家庄新华能源环保科技股份有限公司 Hood-type annealing furnace device
CN105091353A (en) * 2014-05-07 2015-11-25 银川艾尼工业科技开发有限公司 Constant temperature solar high-temperature heat collector with function of automatically collecting heat
CN104429726B (en) * 2014-12-01 2017-05-03 衢州市煜鑫农产品加工技术开发有限公司 Solar heat accumulator used for regulating temperature difference of greenhouse
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CN110486957B (en) * 2019-08-23 2020-11-06 华中科技大学 Sensible heat and latent heat composite heat storage system and method

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