CN202885621U - Medium-low temperature heat storage unit - Google Patents

Medium-low temperature heat storage unit Download PDF

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Publication number
CN202885621U
CN202885621U CN2012204185836U CN201220418583U CN202885621U CN 202885621 U CN202885621 U CN 202885621U CN 2012204185836 U CN2012204185836 U CN 2012204185836U CN 201220418583 U CN201220418583 U CN 201220418583U CN 202885621 U CN202885621 U CN 202885621U
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CN
China
Prior art keywords
heat
heat storage
temperature
low
phase change
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Expired - Fee Related
Application number
CN2012204185836U
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Chinese (zh)
Inventor
张信荣
郑秋云
张钦真
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BAOTOU RESEARCH INSTITUTE, COLLEGE OF ENGINEERING, PKU
Original Assignee
SHAOXING INSTITUTE OF TECHNOLOGY COLLEGE OF ENGINEERING PKU
Peking University
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Priority to CN2012204185836U priority Critical patent/CN202885621U/en
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Publication of CN202885621U publication Critical patent/CN202885621U/en
Anticipated expiration legal-status Critical
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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

Abstract

The utility model relates to a heat storage unit applied to medium-low temperature, in particular to a medium-low temperature heat storage unit aiming to improving efficiency of heat releasing and heat storage, and particularly to the medium-low temperature heat storage unit. The medium-low temperature heat storage unit comprises a heat storage shell 1, a heat exchanger 15, a heat exchanger 16 and a phase change heat storage material 17 which are all arranged in the heat storage shell. The medium-low temperature heat storage unit is characterized in that heat exchanging pipes comprise a circumfluence type heat storage and exchanging pipe 15, and heat-carrying working medium enters a heat storage body 11 through a heat source inlet 6 to store heat in the phase change heat storage material; the heat exchanging pipes further comprise a circumfluence type heat releasing and exchanging pipe 16, and heat-releasing working medium enters the heat storage body 11 from a cold source inlet 4 through a cold source to absorb latent heat and sensible heat of the phase change heat storage material and discharge heat out of a cold source 3; and the circumfluence type heat storage and exchanging pipe and the circumfluence type heat releasing and exchanging pipe are arranged independently each other. With the adoption of the technical scheme, structure of the heat exchanger can be changed and heat exchanging efficiency can be improved.

Description

A kind of middle low-temperature heat accumulating unit
Technical field
The utility model relates to a kind of middle low-temperature heat accumulating unit that is applicable to, and particularly relates to a kind of middle low-temperature heat accumulating unit that improves accumulation of heat heat release efficient.
Background technology
Along with China's rapid economic development, increasing to energy demand, heat storage technology extensively uses in fields such as industrial waste heat recovery, heating, building energy conservation, solar thermal utilizations.At present accumulation of heat mainly contains three kinds of modes: the accumulation of heat of sensible heat mode, the accumulation of heat of latent heat mode and the accumulation of heat of chemical reaction mode.Wherein utilize phase change composite material to absorb heat (cold) amount or emit heat (cold) amount to environment from environment, thereby reach the purpose of storage and the release of energy.Thisly utilize the accumulation of heat of latent heat mode to have the phase transition temperature approximately constant temperature, the particular advantages such as control, can reuse easily, it is had broad prospects at actual motion civilian, industrial circle.
Domestic existing hold over system is in reality is used at present, and the regenerative heat exchanger structure mainly adopts snakelike or spirality adds straight fins, and the introducing mode of heat exchanger tube is bad so that heat exchange efficiency is low.Such hold over system ubiquity, working medium and heat storage heat exchange area are limited, the situation that heat exchange efficiency is low.
Summary of the invention:
The utility model is exactly in order to solve the above problems, to change heat exchanger structure, improving a kind of middle efficient cryogenic thermal storage unit of heat exchange efficiency.
A kind of middle low-temperature heat accumulating unit, comprise heat storage housing 1, be arranged on heat exchanger tube 15 in the housing, 16 and phase change heat storage material 17, it is characterized in that: described heat exchanger tube comprises hollow regenerative heat exchange pipe 15, heat-carrying working medium enters heat storage 11 from thermal source entrance 6, and heat is stored in the phase change heat storage material; Described heat exchanger tube also comprises hollow heat release heat exchanger tube 16, and heat release working medium enters heat storage 11 through low-temperature receiver from low-temperature receiver entrance 4, absorbs latent heat and the sensible heat of phase change heat storage material, discharges low-temperature receiver outlet 3 with heat; Described hollow heat release heat exchanger tube and hollow regenerative heat exchange pipe arrange independently of one another.
Described heat exchanger tube comprises straight copper tube 13 and is enclosed within the corrugated fin 5 of copper pipe outside.
Described heat exchanger tube comprises that return bend 14 is welded on the straight copper tube two ends, and described U-shaped elbow forms the back-shaped structure path of the two independent heat exchanger tubes of cover.
Described corrugated fin 5 stretches to the phase-change material epitaxial lateral overgrowth and stretches, and this fin radial direction bends before and after being miter angle.
Described corrugated fin 5 is immersed in the phase change heat storage material, and the phase transition temperature of this phase-change material is 50-60 ℃.
The thermal source entrance 6 of described hollow regenerative heat exchange pipe is arranged on the center of described middle low-temperature heat accumulating unit, and heat-carrying working medium enters heat storage 11 from thermal source entrance 6, and heat is stored in the phase change heat storage material.
The low-temperature receiver outlet 3 of described hollow heat release heat exchanger tube is arranged on the center of described middle low-temperature heat accumulating unit, and heat release working medium enters heat storage 11 from low-temperature receiver entrance 4, absorbs latent heat and the sensible heat of phase change heat storage material, discharges low-temperature receiver outlet 3 with heat.Described shell is provided with thermometric sleeve 10, the laying temperature sensor.
It is main thermal source that the utility model adopts solar energy, the industrial exhaust heat energy, can effectively utilize the energy in the hot industry waste gas to store on the one hand, on the other hand, the energy after storing, it is used for the user to discharge the energy by an other cover coil pipe.Thermal source begins to dispel the heat towards periphery from the centre, and Effective Raise heat transfer efficiency and heat insulation effect are taken into account accumulation of heat and heat release simultaneously.
Description of drawings
Fig. 1 is a kind of middle low-temperature heat accumulating of the utility model unit master's cutaway view;
Fig. 2 is a kind of middle low-temperature heat accumulating of the utility model unit A-A cutaway view;
Fig. 3 is a kind of middle low-temperature heat accumulating of the utility model unit heat storage outward appearance right view;
Fig. 4 is a kind of middle low-temperature heat accumulating of the utility model unit internal exchanger stereogram;
Fig. 5 is that a kind of middle low-temperature heat accumulating of the utility model unit corrugated fin is connected cutaway view with copper pipe;
Fig. 6 is a kind of middle low-temperature heat accumulating of the utility model unit embodiment exemplary system figure.
Wherein: 1 is the accumulation of heat housing; 2 is insulation material; 3 is the low-temperature receiver entrance; 4 are the low-temperature receiver outlet; 5 is fin; 6 is the thermal source entrance; 7 are the thermal source outlet; 8 are the phase change heat storage material outlet; 9 is the phase change heat storage material entrance; 10 is the thermometric sleeve; 11 is heat storage; 12 is fixed sleeve part; 13 is straight copper tube; 14 is return bend; 15 is hollow regenerative heat exchange pipe; 16 is hollow heat release heat exchanger tube; 17 is phase change heat storage material.
The specific embodiment
Below in conjunction with drawings and Examples the utility model is further described.
Embodiment
Extremely shown in Figure 6 such as Fig. 1, the utility model provides a kind of middle low-temperature heat accumulating unit, comprise heat storage housing 1, be arranged on heat exchanger tube 15 in the housing, 16 and phase change heat storage material 17, wherein heat exchanger tube comprises hollow regenerative heat exchange pipe 15, heat-carrying working medium enters heat storage 11 from thermal source entrance 6, and heat is stored in the phase change heat storage material; Also comprise hollow heat release heat exchanger tube 16, heat release working medium enters heat storage 11 through low-temperature receiver from low-temperature receiver entrance 4, absorbs latent heat and the sensible heat of phase change heat storage material, and by low-temperature receiver outlet 3 heat is taken out of; Described hollow heat release heat exchanger tube and hollow regenerative heat exchange pipe arrange independently of one another.
As shown in Figure 5, the enclosure interior heat exchanger structure comprises heat exchange 15,16 socket corrugated fins 5, and corrugated fin 5 stretches to the phase-change material epitaxial lateral overgrowth and stretches, and this fin radial direction bends before and after being miter angle.Corrugated fin adopts this structure can improve heat exchange area, so that in accumulation of heat and heat release process, improve heat exchange efficiency, reduces working medium circulation, reduces energy cost, can store more inferior heat energy.Described corrugated fin 5 comprises that also the fixed sleeve part 12 of both sides is for supporting corrugated fin and heat exchanger tube effect.Heat exchanger tube comprises that also return bend 14 is welded on straight copper tube 13 two ends.Corrugated fin 5 immerses in the phase change heat storage material, and the phase transition temperature of this phase change heat storage material utilizes paraffin to add the low-grade heat source of graphite absorption below 100 ℃ between 50-60 ℃.Described paraffin and graphite have different transformation temperatures according to proportioning is different, and in the present embodiment, the ratio of paraffin and graphite is 50-60 ℃ according to phase transition temperature and prepares.Return bend forms the back-shaped structure path of the two independent heat exchanger tubes of cover, the thermal source entrance 6 of hollow regenerative heat exchange pipe is arranged on the center of described middle low-temperature heat accumulating unit, be conducive to the higher working medium of temperature by center culvert with heat by the peripherad phase-change material transmission in center, so that heat progressively is diffused into peripheral heat-storing material from the centre, heat-storing material peripheral in this heat-accumulating process serves as insulation material.Heat-carrying working medium enters heat storage 11 from thermal source entrance 6, and heat is stored in the phase change heat storage material; The low-temperature receiver of hollow heat release heat exchanger tube outlet 3 is arranged on the center of described middle low-temperature heat accumulating unit, and heat release working medium enters heat storage 11 from low-temperature receiver entrance 4, absorbs latent heat and the sensible heat of phase change heat storage material, through low-temperature receiver outlet 3 heat is taken out of.The heat of the phase change heat storage material that heat release working medium is preferentially divided the temperature higher part is taken away.In accumulation of heat and heat release process, this back-shaped structure heat storage type can reduce thermal loss, improves heat storage efficiency.The accumulation of heat hull outside is provided with insulation material 2, and housing is welded with respectively up and down the interface of phase change heat storage material entrance 9 and phase change heat storage material outlet 8.Peripheral and the middle part placement thermal resistance sleeve 10 at heat storage is for temperature acquisition.
It is main thermal source that the utility model utilizes the energy of industrial waste heat, waste heat and solar energy, can effectively utilize the energy in industrial waste heat, the waste heat to store on the one hand, on the other hand, be stored in the energy in the phase change heat storage material, can be used for the user by an other cover coil pipe releasing heat.By the relatively independent circular flow of above-mentioned two cover hollow structure heat-exchange systems, energy can be switched fast in accumulation of heat and heat release process, constantly recycling.

Claims (8)

1. low-temperature heat accumulating unit in a kind, comprise heat storage housing (1), be arranged on heat exchanger tube (15,16) and phase change heat storage material (17) in the housing, it is characterized in that: described heat exchanger tube comprises hollow regenerative heat exchange pipe (15), heat-carrying working medium enters heat storage (11) from thermal source entrance (6), and heat is stored in the phase change heat storage material; Described heat exchanger tube also comprises hollow heat release heat exchanger tube (16), and heat release working medium enters heat storage (11) through low-temperature receiver from low-temperature receiver entrance (4), absorbs latent heat and the sensible heat of phase change heat storage material, discharges low-temperature receiver outlet (3) with heat; Described hollow heat release heat exchanger tube and hollow regenerative heat exchange pipe arrange independently of one another.
2. a kind of middle low-temperature heat accumulating according to claim 1 unit, it is characterized in that: described heat exchanger tube comprises straight copper tube (13) and is enclosed within the corrugated fin (5) of copper pipe outside.
3. a kind of middle low-temperature heat accumulating according to claim 2 unit, it is characterized in that: described heat exchanger tube comprises that return bend (14) is welded on the straight copper tube two ends, described U-shaped elbow forms the back-shaped structure path of the two independent heat exchanger tubes of cover.
4. a kind of middle low-temperature heat accumulating according to claim 2 unit, it is characterized in that: described corrugated fin (5) stretches to the phase-change material epitaxial lateral overgrowth and stretches, and this fin radial direction is bending before and after the miter angle.
5. a kind of middle low-temperature heat accumulating according to claim 2 unit, it is characterized in that: described corrugated fin (5) is immersed in the phase change heat storage material, and the phase transition temperature of this phase-change material is 50-60 ℃.
6. each described a kind of middle low-temperature heat accumulating unit that is applicable in 5 according to claim 1, it is characterized in that: the thermal source entrance (6) of described hollow regenerative heat exchange pipe is arranged on the center of described middle low-temperature heat accumulating unit, heat-carrying working medium enters heat storage (11) from thermal source entrance (6), and heat is stored in the phase change heat storage material.
7. a kind of middle low-temperature heat accumulating according to claim 6 unit, it is characterized in that: the low-temperature receiver outlet (3) of described hollow heat release heat exchanger tube is arranged on the center of described middle low-temperature heat accumulating unit, heat release working medium enters heat storage (11) from low-temperature receiver entrance (4), absorb latent heat and the sensible heat of phase change heat storage material, and through low-temperature receiver outlet (3) heat is taken out of.
8. a kind of middle low-temperature heat accumulating according to claim 1 unit, it is characterized in that: described shell is provided with thermometric sleeve (10), laying temperature sensor.
CN2012204185836U 2012-08-22 2012-08-22 Medium-low temperature heat storage unit Expired - Fee Related CN202885621U (en)

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103629964A (en) * 2012-08-22 2014-03-12 北大工学院绍兴技术研究院 Medium-and-low-temperature heat storage unit
CN104792208A (en) * 2015-04-23 2015-07-22 林元武 Heat storage device
CN105509526A (en) * 2016-01-26 2016-04-20 江苏启能新能源材料有限公司 Medium-high temperature phase-change heat storage device
CN105953624A (en) * 2016-05-11 2016-09-21 广东工业大学 Energy storage heat exchange pipeline structure
CN106052451A (en) * 2016-07-01 2016-10-26 浙江大学 Graphite sensible heat exchange device and heat exchange method thereof
CN107202512A (en) * 2016-03-16 2017-09-26 贝卡热-冷垫股份有限公司 Latent heat storage unit
EP3330656A4 (en) * 2015-07-31 2019-03-06 Pioneer Energy (Jiangsu) Co., Ltd Phase change heat storage device
WO2019220154A1 (en) * 2018-05-11 2019-11-21 Heatventors Kft Buffer storage arrangement filled with phase change material
CN111609744A (en) * 2020-05-06 2020-09-01 中国电子科技集团公司第十四研究所 Satellite-borne multifunctional phase change energy storage heat pipe
CN112789475A (en) * 2018-08-17 2021-05-11 生物可持续保护技术公司 Heat accumulator comprising PCM and refrigerated container provided with said heat accumulator
US20220026155A1 (en) * 2020-07-22 2022-01-27 Hamilton Sundstrand Corporation Spiral heat exchanger with monolithic phase change material chamber

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103629964A (en) * 2012-08-22 2014-03-12 北大工学院绍兴技术研究院 Medium-and-low-temperature heat storage unit
CN104792208A (en) * 2015-04-23 2015-07-22 林元武 Heat storage device
EP3330656A4 (en) * 2015-07-31 2019-03-06 Pioneer Energy (Jiangsu) Co., Ltd Phase change heat storage device
CN105509526A (en) * 2016-01-26 2016-04-20 江苏启能新能源材料有限公司 Medium-high temperature phase-change heat storage device
CN107202512A (en) * 2016-03-16 2017-09-26 贝卡热-冷垫股份有限公司 Latent heat storage unit
CN105953624A (en) * 2016-05-11 2016-09-21 广东工业大学 Energy storage heat exchange pipeline structure
CN106052451B (en) * 2016-07-01 2018-01-30 浙江大学 A kind of graphite sensible heat transfer device and its heat-exchange method
CN106052451A (en) * 2016-07-01 2016-10-26 浙江大学 Graphite sensible heat exchange device and heat exchange method thereof
WO2019220154A1 (en) * 2018-05-11 2019-11-21 Heatventors Kft Buffer storage arrangement filled with phase change material
CN112154299A (en) * 2018-05-11 2020-12-29 换热器有限公司 Buffer storage device filled with phase change material
CN112789475A (en) * 2018-08-17 2021-05-11 生物可持续保护技术公司 Heat accumulator comprising PCM and refrigerated container provided with said heat accumulator
CN111609744A (en) * 2020-05-06 2020-09-01 中国电子科技集团公司第十四研究所 Satellite-borne multifunctional phase change energy storage heat pipe
US20220026155A1 (en) * 2020-07-22 2022-01-27 Hamilton Sundstrand Corporation Spiral heat exchanger with monolithic phase change material chamber

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ASS Succession or assignment of patent right

Owner name: BAOTOU INSTITUTE OF COLLEGE OF ENGINEERING, PEKING

Free format text: FORMER OWNER: SHAOXING INSTITUTE OF TECHNOLOGY OF COLLEGE OF ENGINEERING, PEKING UNIVERSITY

Effective date: 20140414

C41 Transfer of patent application or patent right or utility model
COR Change of bibliographic data

Free format text: CORRECT: ADDRESS; FROM: 312000 SHAOXING, ZHEJIANG PROVINCE TO: 014010 BAOTOU, INNER MONGOLIA AUTONOMOUS REGION

TR01 Transfer of patent right

Effective date of registration: 20140414

Address after: 014010 the Inner Mongolia Autonomous Region City, Baotou Qingshan District, 110 National Road, 666 kilometers, Peking University Institute of technology, Baotou Institute

Patentee after: BAOTOU RESEARCH INSTITUTE, COLLEGE OF ENGINEERING, PKU

Patentee after: Peking University

Address before: Shaoxing Institute of technology in Zhejiang province 312000 Shaoxing Paojiang Industrial Zone together at Peking University Institute of Technology

Patentee before: Shaoxing Institute of Technology, College of Engineering, PKU

Patentee before: Peking University

CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20130417

Termination date: 20200822