CN101135543A - High-temperature heat-storing device using concrete and heat storage method thereof - Google Patents

High-temperature heat-storing device using concrete and heat storage method thereof Download PDF

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Publication number
CN101135543A
CN101135543A CNA2006101120044A CN200610112004A CN101135543A CN 101135543 A CN101135543 A CN 101135543A CN A2006101120044 A CNA2006101120044 A CN A2006101120044A CN 200610112004 A CN200610112004 A CN 200610112004A CN 101135543 A CN101135543 A CN 101135543A
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heat
concrete
fluid
pipe
heat exchange
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CN100578133C (en
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王志峰
白凤武
朱教群
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Guangdong Fivestar Solar Energy Co Ltd
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Institute of Electrical Engineering of CAS
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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
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/14Thermal energy storage

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Abstract

The invention relates to high-temperature heat storage device utilizing concrete and its heat storing method. Its heat exchange pipeline is buried in concrete heat storage block, heat exchange fin is at external wall of the pipe, a valve is mounted at cold fluid inlet, cold fluid outlet is at the other end of cold fluid tank; a valve is mounted at heat fluid inlet, heat fluid outlet is at the other end of heat fluid tank. Heat exchange is carried out utilizing the difference of temperature between the concrete heat storage block and the heat exchange pipeline.

Description

A kind of concrete high temperature reservoir and heat-storing method of utilizing
Technical field
The present invention relates to concrete high temperature reservoir of a kind of use and heat-storing method thereof, is that heat exchanger tube is embedded in concrete component, because temperature difference is carried out heat exchange, can be applicable to solar electrical energy generation, belongs to the field that solar energy utilizes.
Background technology
Sensible heat, latent heat and three kinds of heat accumulation modes of chemical energy are arranged at present.The sensible heat heat-storage technology is the simplest and the most ripe, uses wider.Sensible heat heat accumulating commonly used has water, oil, masonry and cement etc.The latent heat heat accumulation is called phase-change thermal storage again, utilizes material to absorb when phase transformation or discharges latent heat and come heat accumulation and heat release, and material is in constant temperature in phase transition process, is heat accumulation modes most widely used at present, that research is maximum.The chemical energy heat accumulation is bigger than the heat flow density of sensible heat and latent heat heat accumulation, and can long term storage, but because technology is comparatively complicated, the cost height, and industrial still do not have an application.Heat accumulating in the solar energy thermal-power-generating has fused salt (KNO 3, NaNO 3Or the mixture of the two), iron ore, conduction oil and rock etc.Fused salt exist one very obvious defects be that stronger corrosivity and freezing under fusion point are arranged, this has very strong destruction to heat-exchanger pipeline and other affiliated facilities, can reduce the security of system stability.Iron ore is unfavorable for heat accumulation and exothermic process because its accumulation is loose, and the thermal efficiency is lower.Conduction oil and rock mixing heat reservoir are because the boiling point restriction of oil can't be accomplished high temperature storage.
Summary of the invention
The purpose of this invention is to provide a kind of light pipe heat exchanger, cold face temperature etc., rib-type gravity heat pipe heat exchanger and the rib-type heat exchange of heat pipe of imbibition core is arranged, it can overcome above-mentioned shortcoming, heat exchanger tube is placed in the concrete heat accumulation piece, utilize its temperature difference to carry out heat exchange, give full play to concrete feature in addition.
The present invention is achieved in that its heat exchanger has light pipe heat exchanger, cold face temperature etc., gravity heat pipe heat exchanger and contains the heat exchange of heat pipe of imbibition core.Gravity assisted heat pipe (6) is embedded in the concrete heat accumulation piece (1), the outer wall of pipe has heat exchange fin (5), valve (11) is contained in cold fluid inlet (10) and locates, cold fluid pond (13) other end has cold fluid outlet (12), valve (7) is contained in hot fluid inlet (8) and locates, and hot fluid pond (14) other end is hot fluid outlet (9).
Fluid flows into light pipe heat exchanger (2) by fluid intake (3), tube fluid and concrete heat accumulation piece (1) heat exchange, and flow out from fluid issuing (4) back.
Fluid flows into light pipe heat exchanger (2) by fluid intake (3), and the outer wall of pipe has heat exchange fin (5), tube fluid and concrete heat accumulation piece (1) heat exchange, and flow out from fluid issuing (4) back.
The heat pipe (15) that contains the imbibition core is embedded in the concrete heat accumulation piece (1), the outer wall of pipe has heat exchange fin (5), valve (11) is contained in cold fluid inlet (10) and locates, cold fluid pond (13) other end has cold fluid outlet (12), valve (7) is contained in hot fluid inlet (8) and locates, and hot fluid pond (14) other end is hot fluid outlet (9).
The refractory concrete density that concrete heat accumulation piece is selected for use is 2.8-3.2g/cm 3, specific heat at constant pressure is 910-1100J/K/kg, and thermal conductivity factor is 1.2-2.0W/m/K (25 ℃ of a room temperature), and refractoriness 400-1000 ℃, storing temperature is from 300 ℃ to 600 ℃.
Concrete heat accumulation piece outside can be added insulation material or is embedded in underground.
Advantage of the present invention is to adopt resistant to elevated temperatures concrete as heat accumulating, makes full use of the characteristics that its heat storage capacity is big, cost is low and have stable high-temperature performance.In addition, do not corrode and solidify problem such as freeze, heat transfer property also is better than the solid thermal storage device of heaped-up.
Description of drawings
Fig. 1 has the concrete thermal storage device schematic diagram of light pipe heat exchanger
Fig. 2 has the concrete thermal storage device schematic diagram of cold face temperature etc.
Fig. 3 has the concrete thermal storage device schematic diagram of gravity heat pipe heat exchanger
Fig. 4 has the concrete thermal storage device schematic diagram of imbibition core heat exchange of heat pipe
1 concrete heat accumulation piece, 2 light pipe heat exchanger tube, 3 fluid intakes, 4 fluid issuings
5 fins, 6 gravity assisted heat pipes, 7 hot fluid side valve doors, 8 hot fluids, 9 hot fluids that enter the mouth export 10 cold fluids, 11 cold fluid side valve doors, 12 cold fluids that enter the mouth and export the heat pipe that there is the imbibition core in 14 hot fluid ponds 15,13 cold fluid ponds
The specific embodiment
By Fig. 1, concrete heat accumulation piece (1) is selected concrete material for use, and its density is 2.98g/cm 3Specific heat at constant pressure is 970J/K/kg, thermal conductivity factor is 1.75W/m/K (25 ℃ of a room temperature), 1000 ℃ of refractoriness, get storing temperature and rise to 600 ℃ from 300 ℃, concrete heat accumulation piece is of a size of 1m * 1m * 1.5m, and storage heat energy is 361.325kWh, and the total storing heat of unit volume can reach 240.8kWh/m 3Heat exchanger tube (2) adopts metal tube or non-metallic pipe, and the inside and outside wall of pipe keeps smooth, and pipeline (2) is embedded in the concrete heat accumulation piece (1), and keeps suitable distance, and pipeline (2) one ends are fluid intake (3), and the other end is fluid issuing (4).When concrete heat accumulation piece (1) fills when hot, high temperature fluid flows into from inlet (3), flow out from other end fluid issuing (4), finished the storing process of heat, the fluid temperature (F.T.) that flows into from fluid intake (3) is lower than concrete heat accumulation piece (1), through with the concrete heat exchange after, flow out from fluid issuing (4), finished exothermic process like this.It is different flowing into the fluid that flows out during heat release, inflow be liquid, outflow can be steam or two-phase state, the fluid of heat exchange is a water usually.
By Fig. 2, heat exchanger tube (2) outside wall surface has cross sectional shape difference, the different enhanced heat exchange fin (5) of size, and all the other are similar to Fig. 1, fills hot also similar with exothermic process.
By Fig. 3, imbed gravity assisted heat pipe (6) in the concrete heat accumulation piece (1), heat exchange rib (5) is arranged on the outside wall surface of pipe, valve (11) is contained in the cold fluid porch, cold fluid pond (13) other end is cold fluid outlet (12), valve (7) is contained in hot fluid inlet (8) and locates, hot fluid pond (14) other end is hot fluid outlet (9), concrete heat accumulation piece fills when hot, valve-off (11), Open valve (7), high temperature fluid flows into hot fluid pond (14) by hot fluid inlet (8), gravity assisted heat pipe (6) is started working, an end that immerses in the hot fluid pond (13) is an evaporator section, and concrete heat accumulation piece (1) is the condensation segment of heat pipe, finishes to fill heat, be aided with attemperator, can realize the heat storage; During concrete heat accumulation piece (1) heat release, valve-off (7), Open valve (11), cryogen flows into cold fluid pond (13) through cold fluid inlet (10), gravity assisted heat pipe is started working, imbed the evaporator section that inside concrete is divided into heat pipe, and the heat pipe section that immerses in the cold fluid pond (13) is a condensation segment, has finished the heat release of concrete heat accumulation piece (1) thus.The fluid that flows into during heat release and flow out can not be a homophase.
By Fig. 4, imbed the heat pipe (15) of imbibition core in the concrete heat accumulation piece (1), heat exchange rib (5) is arranged on the outside wall surface of pipe.Concrete heat accumulation piece (1) fills when hot, valve-off (11), Open valve (7), high temperature fluid flows into hot fluid pond (14), has the heat pipe (15) of imbibition core to start working, and the heat pipe section in the immersion hot fluid pond (14) is as evaporator section, concrete heat accumulation piece (1) is as the condensation segment of heat pipe, finish and fill heat, be aided with attemperator, can finish the heat storage; When concrete is emitted heat, valve-off (7), Open valve (11), cryogen flows into the cold fluid pond, has the heat pipe (15) of imbibition core to start working, and imbeds inside concrete and is divided into heat pipe evaporator section, heat pipe section is a condensation segment in the immersion cold fluid pond, finishes the heat release of concrete block.The fluid that flows into during heat release and flow out can not be a homophase.

Claims (6)

1. one kind is used concrete high temperature reservoir and heat-storing method thereof, it is characterized in that: the heat exchanger of this high temperature reservoir, gravity assisted heat pipe (6) is embedded in the concrete heat accumulation piece (1), the outer wall of pipe has heat exchange fin (5), valve (11) is contained in cold fluid inlet (10) and locates, cold fluid pond (13) other end has cold fluid outlet (12), and valve (7) is contained in hot fluid inlet (8) and locates, and hot fluid pond (14) other end is hot fluid outlet (9).
2. according to the heat-storing method of the thermal storage device of claim 1, it is characterized in that: fluid flows into light pipe heat exchange pipeline (2), tube fluid and concrete heat accumulation piece (1) heat exchange by fluid intake (3).
3. according to the heat-storing method of the thermal storage device of claim 1, it is characterized in that: fluid flows into heat exchange pipeline (2) by fluid intake (3), and the outer wall of pipe has heat exchange fin (5), tube fluid and concrete heat accumulation piece (1) heat exchange.
4. according to the heat-storing method of the thermal storage device of claim 1, it is characterized in that: the heat exchanger of this high temperature reservoir, there is the heat pipe (15) of imbibition core to be embedded in the coagulation scholar heat accumulation piece (1), the outer wall of pipe has heat exchange fin (5), valve (11) is contained in cold fluid inlet (10) and locates, cold fluid pond (13) other end has cold fluid outlet (12), and valve (7) is contained in hot fluid inlet (8) and locates, and hot fluid pond (14) other end is hot fluid outlet (9).
5. thermal storage device according to claim 1 is characterized in that the refractory concrete density that concrete heat accumulation piece is selected for use is 2.8-3.2g/cm 3, specific heat at constant pressure is 910-1100J/K/kg, and thermal conductivity factor is 1.2-2.0W/m/K (25 ℃ of a room temperature), and refractoriness 400-1000 ℃, storing temperature is from 300 ℃ to 600 ℃.
6. thermal storage device according to claim 1 is characterized in that concrete heat accumulation piece outside can add insulation material or be embedded in underground.
CN200610112004A 2006-08-28 2006-08-28 High-temperature heat-storing device using concrete and heat storage method thereof Expired - Fee Related CN100578133C (en)

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WO2010043416A2 (en) * 2008-10-16 2010-04-22 Sgl Carbon Se Method for producing heat exchanger tubes and concrete heat accumulator
CN102168848A (en) * 2011-04-18 2011-08-31 中国科学院电工研究所 High-temperature concrete heat reservoir capable of generating steam directly
CN102374804A (en) * 2011-09-28 2012-03-14 江苏科技大学 Heat pipe cold accumulation device
CN101876487B (en) * 2009-11-10 2012-07-18 武汉理工大学 Method for manufacturing prefabricated concrete heat storage module for solar heat power generation
CN104654576A (en) * 2013-11-17 2015-05-27 成都奥能普科技有限公司 Concrete heating heat accumulator and heating heat accumulating vehicle
CN104654845A (en) * 2013-11-17 2015-05-27 成都奥能普科技有限公司 Solid particle block gravity heat tube heat accumulator
CN104654865A (en) * 2013-11-17 2015-05-27 成都奥能普科技有限公司 Three-cavity fluid heating transferring and accumulating system
CN104654861A (en) * 2013-11-17 2015-05-27 成都奥能普科技有限公司 Multi-energy complementary heat accumulator and complementary power plant
CN104654844A (en) * 2013-11-17 2015-05-27 成都奥能普科技有限公司 Fluid three-chamber heat pipe heat accumulator and fluid three-chamber heat pipe heat accumulating vehicle
CN104654618A (en) * 2013-11-17 2015-05-27 成都奥能普科技有限公司 Three-cavity fluid focus solar photothermal heating heat transfer heat accumulating system
CN104654858A (en) * 2013-11-17 2015-05-27 成都奥能普科技有限公司 Three-cavity fluid heat accumulating type petroleum heating heat transfer heat accumulating system
CN106220099A (en) * 2016-07-29 2016-12-14 刘勇 Energy storage compositions, its preparation method and application thereof
CN106403677A (en) * 2016-03-16 2017-02-15 内蒙古科技大学 Heat superconducting phase change energy storage heat exchanger
CN106767073A (en) * 2016-11-16 2017-05-31 李渊 A kind of energy-accumulating solid module and electric heating energy-accumulating solid device
CN108225067A (en) * 2017-12-05 2018-06-29 上海海事大学 A kind of heat pipe of dual temperature phase-change accumulation energy
CN109539838A (en) * 2018-04-03 2019-03-29 青岛金玉大商贸有限公司 A kind of intelligent control medical fluid storage heater for realizing autonomous accumulation of heat according to temperature
CN112683091A (en) * 2020-12-28 2021-04-20 思安新能源股份有限公司 Horizontal staggered heat storage device based on heat pipes and working method thereof
CN112747616A (en) * 2021-01-06 2021-05-04 国核电力规划设计研究院有限公司 Heat pipe type concrete heat accumulator

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JP3935887B2 (en) * 2004-02-13 2007-06-27 中村土木株式会社 Construction method of geothermal heat exchange pipe unit
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WO2010043416A2 (en) * 2008-10-16 2010-04-22 Sgl Carbon Se Method for producing heat exchanger tubes and concrete heat accumulator
WO2010043416A3 (en) * 2008-10-16 2010-06-24 Sgl Carbon Se Method for producing heat exchanger tubes and concrete heat accumulator
DE102008051905A1 (en) 2008-10-16 2010-07-15 Sgl Carbon Se Process for the production of heat exchanger tubes
CN101876487B (en) * 2009-11-10 2012-07-18 武汉理工大学 Method for manufacturing prefabricated concrete heat storage module for solar heat power generation
CN102168848A (en) * 2011-04-18 2011-08-31 中国科学院电工研究所 High-temperature concrete heat reservoir capable of generating steam directly
CN102374804A (en) * 2011-09-28 2012-03-14 江苏科技大学 Heat pipe cold accumulation device
CN104654844A (en) * 2013-11-17 2015-05-27 成都奥能普科技有限公司 Fluid three-chamber heat pipe heat accumulator and fluid three-chamber heat pipe heat accumulating vehicle
CN104654865A (en) * 2013-11-17 2015-05-27 成都奥能普科技有限公司 Three-cavity fluid heating transferring and accumulating system
CN104654861A (en) * 2013-11-17 2015-05-27 成都奥能普科技有限公司 Multi-energy complementary heat accumulator and complementary power plant
CN104654576A (en) * 2013-11-17 2015-05-27 成都奥能普科技有限公司 Concrete heating heat accumulator and heating heat accumulating vehicle
CN104654618A (en) * 2013-11-17 2015-05-27 成都奥能普科技有限公司 Three-cavity fluid focus solar photothermal heating heat transfer heat accumulating system
CN104654858A (en) * 2013-11-17 2015-05-27 成都奥能普科技有限公司 Three-cavity fluid heat accumulating type petroleum heating heat transfer heat accumulating system
CN104654845A (en) * 2013-11-17 2015-05-27 成都奥能普科技有限公司 Solid particle block gravity heat tube heat accumulator
CN106403677A (en) * 2016-03-16 2017-02-15 内蒙古科技大学 Heat superconducting phase change energy storage heat exchanger
CN106220099A (en) * 2016-07-29 2016-12-14 刘勇 Energy storage compositions, its preparation method and application thereof
CN106767073A (en) * 2016-11-16 2017-05-31 李渊 A kind of energy-accumulating solid module and electric heating energy-accumulating solid device
CN108225067A (en) * 2017-12-05 2018-06-29 上海海事大学 A kind of heat pipe of dual temperature phase-change accumulation energy
CN109539838A (en) * 2018-04-03 2019-03-29 青岛金玉大商贸有限公司 A kind of intelligent control medical fluid storage heater for realizing autonomous accumulation of heat according to temperature
CN112683091A (en) * 2020-12-28 2021-04-20 思安新能源股份有限公司 Horizontal staggered heat storage device based on heat pipes and working method thereof
CN112747616A (en) * 2021-01-06 2021-05-04 国核电力规划设计研究院有限公司 Heat pipe type concrete heat accumulator
CN112747616B (en) * 2021-01-06 2022-11-01 国核电力规划设计研究院有限公司 Heat pipe type concrete heat accumulator

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