温度分层对小型熔盐单罐释热过程影响

doi:10.11949/j.issn.0438-1157.20171275

化工学报 ›› 2018, Vol. 69 ›› Issue (6): 2410-2416.DOI: 10.11949/j.issn.0438-1157.20171275

温度分层对小型熔盐单罐释热过程影响

崔锡民, 鹿院卫, 吴玉庭, 马重芳

传热强化与过程节能教育部重点实验室暨传热与能源利用北京市重点实验室, 北京工业大学, 北京 100124

收稿日期:2017-09-19 修回日期:2017-12-21 出版日期:2018-06-05 发布日期:2018-06-05
通讯作者: 鹿院卫
基金资助:
国家自然科学基金项目（51576006）。

Influence of thermal stratification on discharging process of molten salt in small single thermal storage tank

CUI Ximin, LU Yuanwei, WU Yuting, MA Chongfang

Key Laboratory of Enhanced Heat Transfer and Energy Conservation of Ministry of Education and Key Laboratory of Heat Transfer and Energy Conversion of Beijing, Beijing University of Technology, Beijing 100124, China

Received:2017-09-19 Revised:2017-12-21 Online:2018-06-05 Published:2018-06-05
Supported by:
supported by the National Natural Science Foundation of China (51576006).

摘要/Abstract

摘要：

为了探究温度分层对小型熔盐单罐释热过程的影响，对释热前单罐内熔盐有、无温度分层两种工况下的释热过程进行了实验研究。通过对隔板内外侧熔盐温度、换热器出口处水温、释热过程累积释热效率等参数进行分析发现：释热过程中维持熔盐稳定的温度分层是提高单罐释热效率的关键因素，而浸没式换热器取热时产生的扰动会破坏熔盐温度分层，影响释热效率，需要对其进行优化。研究结果为内置浸没式换热器的小型熔盐单罐系统的优化提供了有效依据。

关键词: 温度分层, 对流, 传热, 混合, 小型熔盐单罐, 累积释热效率

Abstract:

To observe the influence of thermal stratification on the discharging process of molten salt in small single thermal storage tank, the discharging process of molten salt with or without thermal stratification were investigated. The parameters including molten salt temperature, water temperature at the outlet of the heat exchanger and the cumulative heat discharging efficiency were analyzed in details. It was found that maintaining the thermal stratification of the molten salt during the heat discharging process is the key factor to improve the cumulative heat release efficiency of the single tank. The disturbance caused by the heat discharging of the immersed heat exchanger can destroy the molten salt thermal stratification, so it is necessary to optimize it. The results provide an effective basis for the optimization of small single thermal storage tank system with immersed heat exchanger.

Key words: thermal stratification, convection, heat transfer, mixing, molten salt in small single thermal storage tank, cumulative heat release efficiency

中图分类号:

崔锡民, 鹿院卫, 吴玉庭, 马重芳. 温度分层对小型熔盐单罐释热过程影响[J]. 化工学报, 2018, 69(6): 2410-2416.

CUI Ximin, LU Yuanwei, WU Yuting, MA Chongfang. Influence of thermal stratification on discharging process of molten salt in small single thermal storage tank[J]. CIESC Journal, 2018, 69(6): 2410-2416.

参考文献 30

[1]	马重芳, 吴玉庭, 任楠, 等. 熔盐蓄热式电加热集中供暖系统:103836703A[P]. 2014-06-04. MA C F, WU Y T, REN N, et al. Central heating system using molten salt for thermal storage by electric heating:103836703A[P]. 2014-06-04.
[2]	吴玉庭, 张晓明, 马重芳, 等. 一种带有中间蒸发器的熔盐蓄热式电加热集中供暖系统:106369655A[P]. 2017-02-01. WU Y T, ZHANG X M, MA C F, et al. A central heating system with intermediate evaporator using molten salt for thermal storage by electric heating:106369655A[P]. 2017-02-01.
[3]	鹿院卫, 吴玉庭, 杜文彬, 等. 一种单罐电能蓄能装置:203771692U[P]. 2014-08-13. LU Y W, WU Y T, DU W B, et al. A device of single electric energy storage tank:203771692U[P]. 2014-08-13.
[4]	鹿院卫, 吴玉庭, 杜文彬, 等. 一种单罐电能蓄能装置及其使用方法:103836795A[P]. 2014-06-04. LU Y W, WU Y T, DU W B, et al. A device of single electric energy storage tank and its using method:103836795A[P]. 2014-06-04.
[5]	鹿院卫, 吴玉庭, 孙晓丽, 等. 一种单罐蓄能装置及其使用方法:103940119A[P]. 2014-07-23. LU Y W, WU Y T, SUN X L, et al. A device of single thermal energy storage tank and its using method:103940119A[P]. 2014-07-23.
[6]	LIU W, DAVIDSON J H, KULACKI F A, et al. Natural convection from a horizontal tube heat exchanger immersed in a tilted enclosure[J]. Journal of Solar Energy Engineering, 2003, 125(1):67-75.
[7]	LIU W, DAVIDSON J H, KULACKI F A. Natural convection from a tube bundle in a thin inclined enclosure[J]. Journal of Solar Energy Engineering, 2004, 126(2):71-78.
[8]	LIU W, DAVIDSON J H, KULACKI F A. Thermal characterization of prototypical integral collector storage systems with immersed heat exchangers[J]. Journal of Solar Energy Engineering, 2005, 127(1):21-28.
[9]	YAN S, DAVIDSON J H. Transient natural convection heat transfer correlations for tube bundles immersed in a thermal storage[J]. Journal of Solar Energy Engineering, 2007, 129(2):210-214.
[10]	YAN S, DAVIDSON J H. Multi-zone porous medium model of the thermal/fluid processes during discharge of an inclined rectangular storage vessel via an immersed tube bundle[J]. Journal of Solar Energy Engineering, 2007, 129(4):449-457.
[11]	HALTIWANGER J F, DAVIDSON J H. Discharge of a thermal storage tank using an immersed heat exchanger with an annular baffle[J]. Solar Energy, 2009, 83(2):193-201.
[12]	孙晓丽, 鹿院卫, 崔锡民, 等. 熔融盐单罐储热系统释热传热规律研究[J]. 工程热物理学报, 2016, 37(5):1032-1037. SUN X L, LU Y W, CUI X M, et al. Heat discharge research of molten salt in single energy storage tank[J]. Journal of Engineering Thermophysics, 2016, 37(5):1032-1037.
[13]	孙晓丽. 单罐熔融盐蓄热与释热传热规律研究[D]. 北京:北京工业大学, 2016. SUN X L. Study on charging and discharging process of molten salt in single thermal energy storage tank[D]. Beijing:Beijing University of Technology, 2016.
[14]	ARSLAN M, IGCI A A. Thermal performance of a vertical solar hot water storage tank with a mantle heat exchanger depending on the discharging operation parameters[J]. Solar Energy, 2015, 116:184-204.
[15]	LAVAN Z, THOMPSON J. Experimental study of thermally stratified hot water storage tanks[J]. Solar Energy, 1977, 19(5):519-524.
[16]	BEITHOU N. Heat transfer aspects in bottom flow mixing of cold water and hot water in domestic hot water storage tank[J]. Strojnicky Casopis, 2006, 57(1):34-44.
[17]	KGT H, LIGHTSTONE M F. A review of low-flow, stratified-tank solar water heating systems[J]. Solar Energy, 1989, 43(2):97-105.
[18]	CRISTOFARI C, NOTTON G, POGGI P, et al. Influence of the flow rate and the tank stratification degree on the performances of a solar flat-plate collector[J]. International Journal of Thermal Sciences, 2003, 42(5):455-469.
[19]	王智平, 陈丹丹, 王克振, 等. 太阳能储热水箱温度分层的研究现状及发展趋势[J]. 材料导报, 2013, 27(15):70-73. WANG Z P, CHEN D D, WANG K Z, et al. Research and development trends of temperature stratified storage tank for solar energy[J]. Materials Review, 2013, 27(15):70-73.
[20]	WILDIN M W. Diffuser design for naturally stratified thermal storage[J]. ASHRAE Transactions, 1990, 96(1):1094-1102.
[21]	杨小平, 秦贯丰, 杨晓西, 等. 熔盐单罐蓄热系统中斜温层粘性指进的稳定性分析[J]. 工程热物理学报, 2017, 38(1):167-171. YANG X P, QIN G F, YANG X X, et al. The stability analysis of thermocline viscous fingering in a single tank molten salt thermal energy storage system[J]. Journal of Engineering Thermophysics, 2017, 38(1):167-171.
[22]	左远志, 李熙亚. 熔融盐斜温层混合蓄热单罐系统及其实验研究[J]. 化工进展, 2007, 26(7):1018-1022. ZUO Y Z, LI X Y. Scheme and experiments of a molten-salt hybrid thermocline thermal storage system[J]. Chemical Industry and Engineering Progress, 2007, 26(7):1018-1022.
[23]	左远志, 杨晓西, 丁静, 等. 熔融盐斜温层蓄热的热特性研究[J]. 太阳能学报, 2012, 33(1):135-140. ZUO Y Z, YANG X X, DING J, et al. Thermal characteristics analysis on the molten salt thermocline thermal energy storage system[J]. Acta Energiae Solaris Sinica, 2012, 33(1):135-140.
[24]	BIENCINTO M, BAYON R, ROJAS E, et al. Simulation and assessment of operation strategies for solar thermal power plants with a thermocline storage tank[J]. Solar Energy, 2014, 103(6):456-472.
[25]	GAGGIOLI W, FABRIZI F, TARQUINI P, et al. Experimental validation of the innovative thermal energy storage based on an integrated system "storage tank/steam generator"[J]. Energy Procedia, 2015, 69:822-831.
[26]	RIVAS E, ROJAS E, BAYON R, et al. CFD model of a molten salt tank with integrated steam generator[J]. Energy Procedia, 2014, 49:956-964.
[27]	RIVAS E, ROJAS E. Heat transfer correlation between molten salts and helical-coil tube bundle steam generator[J]. International Journal of Heat and Mass Transfer, 2016, 93:500-512.
[28]	GAGGIOLI W, FABRIZI F, FONTANA F, et al. An innovative concept of a thermal energy storage system based on a single tank configuration using stratifying molten salts as both heat storage medium and heat transfer fluid, and with an integrated steam generator[J]. Energy Procedia, 2014, 49:780-789.
[29]	SEUBERT B, ROJAS E, RIVAS E, et al. Analysis of a helical coil once-through molten salt steam generator:experimental results and heat transfer evaluation[C]//International Conference on Concentrating Solar Power and Chemical Energy Systems. 2016, 1734(1):956-964.
[30]	崔武军, 吴玉庭, 熊亚选, 等. 低熔点熔盐蓄热罐内温度分布与散热损失实验[J]. 化工学报, 2014, 65(S1):162-168. CUI W J, WU Y T, XIONG Y X, et al. Temperature distribution and heat loss experiments of low melting point molten salt heat storage tank[J]. CIESC Journal, 2014, 65(S1):162-168.

温度分层对小型熔盐单罐释热过程影响

Influence of thermal stratification on discharging process of molten salt in small single thermal storage tank

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