CN1776322A - Binary medium solar high temperature heat absorption/storage device - Google Patents

Binary medium solar high temperature heat absorption/storage device Download PDF

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Publication number
CN1776322A
CN1776322A CNA2005101276132A CN200510127613A CN1776322A CN 1776322 A CN1776322 A CN 1776322A CN A2005101276132 A CNA2005101276132 A CN A2005101276132A CN 200510127613 A CN200510127613 A CN 200510127613A CN 1776322 A CN1776322 A CN 1776322A
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CN
China
Prior art keywords
heat
working medium
accumulation
heat exchanger
storage heater
Prior art date
Application number
CNA2005101276132A
Other languages
Chinese (zh)
Inventor
马重芳
吴玉庭
张丽娜
Original Assignee
北京工业大学
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 北京工业大学 filed Critical 北京工业大学
Priority to CNA2005101276132A priority Critical patent/CN1776322A/en
Publication of CN1776322A publication Critical patent/CN1776322A/en

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24SSOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S20/00Solar heat collectors specially adapted for particular uses or environments
    • F24S20/20Solar heat collectors for receiving concentrated solar energy, e.g. receivers for solar power plants
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24SSOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S60/00Arrangements for storing heat collected by solar heat collectors
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24SSOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S60/00Arrangements for storing heat collected by solar heat collectors
    • F24S60/10Arrangements for storing heat collected by solar heat collectors using latent heat
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24SSOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S60/00Arrangements for storing heat collected by solar heat collectors
    • F24S60/20Arrangements for storing heat collected by solar heat collectors using chemical reactions, e.g. thermochemical reactions or isomerisation reactions
    • 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

The heat absorber/heat storage includes cavity, heat exchanger, heat absorbent surface, and cycle working-medium inside the heat exchanger. Characters are that the heat absorber/accumulator also includes heat storage working medium. Filled between the heat exchanger and case, heat storage working-medium and the heat exchanger are in same case. Obtaining quantity of heat from heat absorbent surface, the heat storage working-medium stores energy and passes part of quantity of heat to cycle working-medium. The heat exchanger is metal coil pipe in single helix or dual helixes, or heat exchanger of ribbing heat pipe etc. Heat storage working-medium is molten salt of phase change in high temperature. Air, gas or water is adopted as cycle working-medium. Heat absorber/heat storage is in shape of circular truncated cone or taper. Heat absorption coating in high temperature is coated on heat absorbent surface. Features are: low cost and high thermal efficiency.

Description

A kind of duplexing matter solar energy high temperature heat absorption/storage heater
Technical field
The present invention relates to a kind of solar energy high temperature heat absorption/storage heater, belong to the hot power field of solar energy high temperature.
Background technology
Solar energy is the eternal energy of the earth.Its aboundresources, total amount are equivalent to more than 10,000 times of the present human energy that is utilized, both can freely use, and need not transportation again, and environment is not had any pollution, belong to eco-friendly power source.Exploitation solar energy can well be alleviated the energy crisis that the present earth faces again.And being the most promising solar energy, solar energy thermal-power-generating utilizes mode.Solar energy thermal-power-generating mainly contains slot type, tower and dish formula.Its operation principle all is to collect solar energy reflection to heat dump by concentrator, and heat cycles working medium adds the hot steam again, drives the gas-turbine generating, or directly adds hot-air, drives the Stirling-electric hybrid generating.Slot type and tower regenerative apparatus (the dish formula is subjected to structural limitations not have hold over system) arranged respectively in traditional solar heat power generation system is to guarantee that cloudy day or night, system normally moved.But storage heater and heat dump are relatively independent in traditional solar energy high temperature heat generating system, a heat cycles working medium in the heat dump, this just makes heat energy pass to heat storage medium by cycle fluid from heat dump, passes to heating working medium by heat storage medium again, drives thermo-mechanical power generation again.So traditional storage heater and heat dump increase heat transfer process, thermal loss increases, and system effectiveness reduces; Storage heater and heat dump are relatively independent, have increased equipment and pipeline, and cost increases, and economy descends; Whole system is complicated, increases maintenance cost.Heat absorption/storage heater in the space station solar thermal power electricity generation system (SDPSS) integrates heat absorption and heat accumulation function, and it is a cavity body structure.The many parallel heat-absorbing chamber inwalls that are distributed in of heat exchanger tube, the two ends of heat exchanger tube link together by inlet, outlet ring duct, are being connected to inlet, outlet header.Heat exchanger tube is sleeved on the working medium conduit by thermal storage unit and constitutes outward.Thermal storage unit is the toroidal container that separates one by one, and inside fills accumulation of heat working medium.Though this heat absorption/storage heater volume is less, because heat exchange will must cause heat exchange efficiency to reduce by toroidal container and the two-layer tube wall of heat exchanger tube between working medium in the heat exchanger tube and the accumulation of heat working medium in the toroidal container; Processing technology is more complicated, and cost is higher; Accumulation of heat working medium is less, regenerative capacity seldom, the heat release time is very short during no sunshine.
Raise the efficiency, reducing cost is the key and the difficult point of the hot generation technology of present solar energy high temperature, and heat dump and storage heater are most important in the effect of whole system, and investment also accounts for significant proportion.Therefore, improve the performance of heat dump and storage heater and reduce cost the key that just becomes the hot generation technology cost of reduction solar energy high temperature and raise the efficiency.And under the situation that does not reduce heat storage capacity, simplified structure, reducing the heat exchange number of times is to improve the performance of heat dump and storage heater and a kind of direct effective method that reduces cost.
Summary of the invention
It is relatively independent to the objective of the invention is to overcome in the existing solar energy high temperature heat generating system heat dump and storage heater, heat exchange shortcoming often proposes the duplexing matter solar energy high temperature heat absorption/storage heater that a kind of simple in structure, heat exchange for once, thermal loss is little, efficient is high, cost is low heat absorption and heat accumulation function are one.
The characteristics of solar energy high temperature heat absorption/storage heater of the present invention are: accumulation of heat working medium and heat exchanger are with placing in heat absorption/storage heater, and be simple in structure, reduces cost; A direct heat exchange between accumulation of heat working medium and the cycle fluid, heat loss reduces, and raises the efficiency; Accumulation of heat working medium plays cushioning effect.Concrete scheme of the present invention is seen accompanying drawing 1,2,3: comprise the cycle fluid in cavity, accumulation of heat working medium 1, heat exchanger, heat-absorbent surface 5 and the heat exchanger, accumulation of heat working medium 1 places in the cavity together with heat exchanger, is full of accumulation of heat working medium 1 between heat exchanger and cavity; Accumulation of heat working medium 1 is obtained heat from heat-absorbent surface 5, and storage power is passed to cycle fluid with a part of heat simultaneously.
Described a kind of duplexing matter solar energy high temperature heat absorption/storage heater, heat exchanger wherein is single-screw or double-helical coil heat exchanger 2, or is ribbing heat exchange of heat pipe 3, or is U type heat exchange of heat pipe 4.
Described a kind of duplexing matter solar energy high temperature heat absorption/storage heater, accumulation of heat working medium 1 wherein adopts the fused salt of fusing point at the high-temperature phase-change more than 400 ℃.
Described a kind of duplexing matter solar energy high temperature heat absorption/storage heater, cycle fluid wherein adopts any in air, hydrogen, helium, the steam, or is water.
Described a kind of duplexing matter solar energy high temperature heat absorption/storage heater, heat absorption/storage heater cavity is round platform or taper, its end face is the glass heat-absorbent surface 5 that scribbles the high temperature heat absorbing coating, or the outside that scribbles the high temperature heat absorbing coating for the side is subjected to the cylindrical of light.
Accumulation of heat working medium 1 in the duplexing matter heat absorption/storage heater of the present invention has played cushioning effect.If there is the cloud short time to cover the sun, this heat absorption/storage heater also can be by heat storage medium 1 heat cycles medium, thereby has guaranteed the operate as normal of system; Heat exchanger is placed accumulation of heat working medium 1, and heat exchange has for once reduced heat loss between accumulation of heat working medium and cycle fluid, has improved heat exchange efficiency; Storage heater and heat dump are combined together, simple in structure, not only reduced taking up room, and improved economy.
Description of drawings
Fig. 1 round platform heat absorption/storage heater profile;
The cylindrical heat absorption of Fig. 2/storage heater profile;
Conical heat absorption/storage heater the profile of Fig. 3;
Wherein, 1, accumulation of heat working medium, 2, coil heat exchanger, 3, the ribbing heat exchange of heat pipe, 4, U type heat exchange of heat pipe, 5, heat-absorbent surface, 6, incident ray, 7, the cycle fluid inlet, 8, the cycle fluid outlet, 9, fin.
The specific embodiment
Enumerate three embodiment of the present invention below in conjunction with accompanying drawing:
Embodiment one:
Present embodiment is referring to accompanying drawing 1, and Fig. 1 is a truncated cone-shaped for heat absorption/storage heater profile, and heat exchanger 2 is the schematic diagram of the coil heat exchanger of screw arrangement.Truncated cone-shaped meets concentrator light spot energy Density Distribution, the heat that the high efficiency absorption of energy obtains; Coil heat exchanger 2 screw arrangement increase tube length, increase heat exchange area, improve heat exchange efficiency.Heat absorption/storage heater is passed to accumulation of heat working medium 1 by the heat of the heat-absorbent surface 5 absorption incident raies 6 that scribble the high-quality heat absorbing coating, and accumulation of heat working medium 1 is by the solid-state liquid state that becomes, phase-transition heat-storage; Wherein accumulation of heat working medium 1 is the fused salt of fusing point at the high-temperature phase-change more than 400 ℃; 1 heating of the working medium of accumulation of heat simultaneously is from 7 cycle fluids that flow into that enter the mouth, and cycle fluid is a pressure-air, and the cycle fluid after the heating flows out from exporting 8.Cover the solar time in short-term as cloud, accumulation of heat working medium 1 changes solid-state release heat into by liquid state, heat cycles working medium, the operate as normal of assurance system.
Embodiment two:
Present embodiment is referring to accompanying drawing 2, and Fig. 2 is cylindrical for heat absorption/storage heater profile, and heat exchanger is the schematic diagram with the ribbing heat exchange of heat pipe 3 of fin 9.Cylindrical technology is simple, saves cost; Heat exchanger increases heat exchange area during with fin, improves heat exchange efficiency.Heat absorption/storage heater is passed to accumulation of heat working medium 1 by the heat of the heat-absorbent surface 5 absorption incident raies 6 that scribble the high-quality heat absorbing coating, and accumulation of heat working medium 1 is by the solid-state liquid state that becomes, phase-transition heat-storage; Wherein accumulation of heat working medium 1 is the fused salt of fusing point at the high-temperature phase-change more than 400 ℃; 1 heating of the working medium of accumulation of heat simultaneously is from 7 cycle fluids that flow into that enter the mouth, and cycle fluid is a high pressure hydrogen, and the cycle fluid after the heating flows out from exporting 8.Cover the solar time in short-term as cloud, accumulation of heat working medium 1 changes solid-state release heat into by liquid state, heat cycles working medium, the operate as normal of assurance system.
Embodiment three:
Present embodiment is referring to accompanying drawing 3, and Fig. 3 is conical for heat absorption/storage heater profile, and heat exchanger is the schematic diagram of U type heat exchange of heat pipe 4.Conical close with concentrator light spot energy Density Distribution, and technology is simple, saves cost; Heat exchanger is a U type pipe, and easy to make, technology is simple, saves cost.Heat absorption/storage heater is passed to accumulation of heat working medium 1 by the heat of the heat-absorbent surface 5 absorption incident raies 6 that scribble the high-quality heat absorbing coating, and accumulation of heat working medium 1 is by the solid-state liquid state that becomes, phase-transition heat-storage; Wherein accumulation of heat working medium 1 is the fused salt of fusing point at the high-temperature phase-change more than 400 ℃; 1 heating of the working medium of accumulation of heat simultaneously is from 7 cycle fluids that flow into that enter the mouth, and cycle fluid is a high-pressure steam, and the cycle fluid after the heating flows out from exporting 8.Cover the solar time in short-term as cloud, accumulation of heat working medium 1 changes solid-state release heat into by liquid state, heat cycles working medium, the operate as normal of assurance system.
When concrete the application, round platform formula heat absorption/storage heater also can adopt the heat exchanger of ribbing heat pipe or U type heat exchange of heat pipe to be used; Column type heat absorption/storage heater also can adopt or U type heat exchange of heat pipe is used; Equally, circular cone type heat absorption/storage heater also can adopt the heat exchanger of ribbing heat pipe or spiral tube exchanger to be used; Heat absorption/the storage heater of three kinds of shapes can also be used with other forms of heat exchanger, is not limited to the heat exchanger of above three kinds of forms; Cycle fluid also can according to circumstances exchange, or selects other working medium.

Claims (5)

1, a kind of duplexing matter solar energy high temperature heat absorption/storage heater, comprise the cycle fluid in cavity, accumulation of heat working medium (1), heat exchanger, heat-absorbent surface (5) and the heat exchanger, it is characterized in that: accumulation of heat working medium (1) and heat exchanger all place in the cavity, are full of accumulation of heat working medium (1) between heat exchanger and cavity; Accumulation of heat working medium (1) is obtained heat from heat-absorbent surface (5), and storage power is passed to cycle fluid with a part of heat simultaneously.
2, a kind of duplexing matter solar energy high temperature heat absorption/storage heater according to claim 1, it is characterized in that: described heat exchanger is single-screw or double-helical coil heat exchanger (2), or is ribbing heat exchange of heat pipe (3), or is U type heat exchange of heat pipe (4).
3, a kind of duplexing matter solar energy high temperature heat absorption/storage heater according to claim 1 is characterized in that: described accumulation of heat working medium (1) adopts the fused salt of fusing point at the high-temperature phase-change more than 400 ℃.
4, a kind of duplexing matter solar energy high temperature heat absorption/storage heater according to claim 1 is characterized in that: cycle fluid wherein adopts any in air, hydrogen, helium, the steam, or water.
5, a kind of duplexing matter solar energy high temperature heat absorption/storage heater according to claim 1, it is characterized in that: heat absorption/storage heater cavity is round platform or taper, its end face is the glass heat-absorbent surface (5) that scribbles the high temperature heat absorbing coating, or the outside that scribbles the high temperature heat absorbing coating for the side is subjected to the cylindrical of light.
CNA2005101276132A 2005-12-06 2005-12-06 Binary medium solar high temperature heat absorption/storage device CN1776322A (en)

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Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100429397C (en) * 2006-07-04 2008-10-29 吴耀琪 Cluster type heat storage solar energy light heat generator
CN102278828A (en) * 2011-05-27 2011-12-14 中国科学院电工研究所 High-temperature air and molten salt composite heat absorber
CN101515605B (en) * 2008-02-18 2011-12-28 美商洁能科技股份有限公司 Cone-shaped solar energy power supply device
CN102331094A (en) * 2011-08-15 2012-01-25 哈尔滨工业大学 Solar heat absorber with inward-protruding bottom and inverted flat-top conical cavity
CN102353156A (en) * 2011-08-15 2012-02-15 哈尔滨工业大学 Cylindrical-cavity type solar heat absorber with internally-convex bottom surface
CN102425862A (en) * 2011-08-15 2012-04-25 哈尔滨工业大学 Conical heat absorber with inward-convex bottom surface, regular and flat top and an optical window containing selective penetrating coating layer
CN102538225A (en) * 2012-01-19 2012-07-04 深圳市联讯创新工场科技开发有限公司 Solar thermal collector
CN102589160A (en) * 2012-03-06 2012-07-18 哈尔滨工业大学 Cylindrical and conical composite cavity type solar heat absorber
CN102635462A (en) * 2012-04-28 2012-08-15 翎零碳建筑科技(上海)有限公司 Heat storage temperature control device of solar disc-type Sterling engine
CN102767913A (en) * 2011-05-05 2012-11-07 康雪慧 Linear solar light collector and heat transfer method of linear solar light collector
CN103168202A (en) * 2010-11-08 2013-06-19 国立大学法人东京工业大学 Method and system for storing solar heat
CN103512236A (en) * 2012-06-15 2014-01-15 新茂野科技股份有限公司 Heat collecting container of solar photo-thermal device
CN103994585A (en) * 2014-06-11 2014-08-20 中科佰能科技股份有限公司 Solar vacuum heat collector
CN105042899A (en) * 2015-08-12 2015-11-11 大同新成新材料股份有限公司 Coil pipe type solar heat collection device
CN105066758A (en) * 2014-03-07 2015-11-18 东莞理工学院 High-temperature heat storage system
CN105066478A (en) * 2015-08-31 2015-11-18 华南理工大学 Circular-truncated-cone-shaped cavity type solar heat absorber with double-row multiple tubes
CN105650901A (en) * 2016-02-18 2016-06-08 李俊娇 Disk butterfly type solar receiver device
CN106556156A (en) * 2015-09-25 2017-04-05 北京兆阳光热技术有限公司 Light heat-receiving apparatus and tower type solar in a kind of tower power station utilize device
CN106907868A (en) * 2017-03-17 2017-06-30 深圳东康前海新能源有限公司 A kind of solar attachment and heat dump
CN106979626A (en) * 2017-04-26 2017-07-25 山东大学 A kind of phase-change heat-storage solar energy vacuum heat collection pipe and vacuum heat-collecting system
CN107144024A (en) * 2017-04-26 2017-09-08 山东大学 A kind of solar vacuum heat-collecting pipe and system close to countercurrent flow effect
CN109556293A (en) * 2018-11-20 2019-04-02 青海大学 Spiral-flow type phase-change heat accumulation water heater
CN109733754A (en) * 2019-02-14 2019-05-10 浙江中控太阳能技术有限公司 A kind of connection structure into salt pipe and fused salt storage tank for fused salt storage tank

Cited By (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100429397C (en) * 2006-07-04 2008-10-29 吴耀琪 Cluster type heat storage solar energy light heat generator
CN101515605B (en) * 2008-02-18 2011-12-28 美商洁能科技股份有限公司 Cone-shaped solar energy power supply device
US9372013B2 (en) 2010-11-08 2016-06-21 Tokyo Institute Of Technology Method and system for storing solar heat
CN103168202B (en) * 2010-11-08 2015-10-21 国立大学法人东京工业大学 Solar heat storage method and system
CN103168202A (en) * 2010-11-08 2013-06-19 国立大学法人东京工业大学 Method and system for storing solar heat
CN102767913A (en) * 2011-05-05 2012-11-07 康雪慧 Linear solar light collector and heat transfer method of linear solar light collector
CN102278828A (en) * 2011-05-27 2011-12-14 中国科学院电工研究所 High-temperature air and molten salt composite heat absorber
CN102278828B (en) * 2011-05-27 2013-02-20 中国科学院电工研究所 High-temperature air and molten salt composite heat absorber
CN102353156A (en) * 2011-08-15 2012-02-15 哈尔滨工业大学 Cylindrical-cavity type solar heat absorber with internally-convex bottom surface
CN102425862A (en) * 2011-08-15 2012-04-25 哈尔滨工业大学 Conical heat absorber with inward-convex bottom surface, regular and flat top and an optical window containing selective penetrating coating layer
CN102353156B (en) * 2011-08-15 2013-01-02 哈尔滨工业大学 Cylindrical-cavity type solar heat absorber with internally-convex bottom surface
CN102425862B (en) * 2011-08-15 2013-03-13 哈尔滨工业大学 Conical heat absorber with inward-convex top surface of optical window containing selective penetrating coating layer
CN102331094B (en) * 2011-08-15 2013-03-13 哈尔滨工业大学 Solar heat absorber with inward-protruding bottom and inverted flat-top conical cavity
CN102331094A (en) * 2011-08-15 2012-01-25 哈尔滨工业大学 Solar heat absorber with inward-protruding bottom and inverted flat-top conical cavity
CN102538225A (en) * 2012-01-19 2012-07-04 深圳市联讯创新工场科技开发有限公司 Solar thermal collector
CN102589160B (en) * 2012-03-06 2013-04-24 哈尔滨工业大学 Cylindrical and conical composite cavity type solar heat absorber
CN102589160A (en) * 2012-03-06 2012-07-18 哈尔滨工业大学 Cylindrical and conical composite cavity type solar heat absorber
CN102635462A (en) * 2012-04-28 2012-08-15 翎零碳建筑科技(上海)有限公司 Heat storage temperature control device of solar disc-type Sterling engine
CN102635462B (en) * 2012-04-28 2015-04-29 翎零碳建筑科技(上海)有限公司 Heat storage temperature control device of solar disc-type Sterling engine
CN103512236A (en) * 2012-06-15 2014-01-15 新茂野科技股份有限公司 Heat collecting container of solar photo-thermal device
CN105066758B (en) * 2014-03-07 2017-11-07 东莞理工学院 A kind of high-temperature heat accumulation system
CN105066758A (en) * 2014-03-07 2015-11-18 东莞理工学院 High-temperature heat storage system
CN103994585B (en) * 2014-06-11 2016-05-25 中科佰能科技股份有限公司 Solar energy vacuum heat collecting device
CN103994585A (en) * 2014-06-11 2014-08-20 中科佰能科技股份有限公司 Solar vacuum heat collector
CN105042899A (en) * 2015-08-12 2015-11-11 大同新成新材料股份有限公司 Coil pipe type solar heat collection device
CN105066478A (en) * 2015-08-31 2015-11-18 华南理工大学 Circular-truncated-cone-shaped cavity type solar heat absorber with double-row multiple tubes
CN106556156A (en) * 2015-09-25 2017-04-05 北京兆阳光热技术有限公司 Light heat-receiving apparatus and tower type solar in a kind of tower power station utilize device
CN105650901A (en) * 2016-02-18 2016-06-08 李俊娇 Disk butterfly type solar receiver device
CN106907868A (en) * 2017-03-17 2017-06-30 深圳东康前海新能源有限公司 A kind of solar attachment and heat dump
CN106907868B (en) * 2017-03-17 2019-05-28 深圳东康前海新能源有限公司 A kind of solar attachment and heat dump
CN106979626A (en) * 2017-04-26 2017-07-25 山东大学 A kind of phase-change heat-storage solar energy vacuum heat collection pipe and vacuum heat-collecting system
CN107144024A (en) * 2017-04-26 2017-09-08 山东大学 A kind of solar vacuum heat-collecting pipe and system close to countercurrent flow effect
CN109556293A (en) * 2018-11-20 2019-04-02 青海大学 Spiral-flow type phase-change heat accumulation water heater
CN109733754A (en) * 2019-02-14 2019-05-10 浙江中控太阳能技术有限公司 A kind of connection structure into salt pipe and fused salt storage tank for fused salt storage tank

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