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一种余热利用相变石蜡储热过程的数值模拟
引用本文:邹得球,肖睿,宋文吉,冯自平.一种余热利用相变石蜡储热过程的数值模拟[J].热能动力工程,2010,25(1).
作者姓名:邹得球  肖睿  宋文吉  冯自平
作者单位:1. 中国科学院研究生院,北京,100039
2. 中国科学院广州能源研究所,广东,广州,510640
基金项目:国家自然科学基金-广东联合基金资助项目,国家863计划基金资助项目,国家自然科学基金资助项目 
摘    要:基于一种相变储热石蜡,考虑熔化过程中液相的自然对流情况,建立了矩形腔内石蜡熔化过程的数学模型,并利用该模型进行了数值模拟,分析了石蜡熔化过程中的温度场变化、流场变化、相界面移动情况。通过采用铝制翅片的方式强化传热,并分析了翅片位置对该石蜡熔化时间的影响。模拟结果表明,在y=0.1、y=5、y=10、y=15mm时,与不采用翅片相比,储热时间分别缩短了43.1%、52.0%、38.3%、22.2%。研究结果对相变储热器的优化设计有一定意义。

关 键 词:石蜡  相变  强化传热  余热利用  数值模拟

Numerical Simulation of the Heat Storage Process of a Waste Heat Utilization-oriented Phase-change Paraffin
ZOU De-qiu,XIAO Rui,SONG Wen-ji,FENG Zi-ping.Numerical Simulation of the Heat Storage Process of a Waste Heat Utilization-oriented Phase-change Paraffin[J].Journal of Engineering for Thermal Energy and Power,2010,25(1).
Authors:ZOU De-qiu  XIAO Rui  SONG Wen-ji  FENG Zi-ping
Affiliation:ZOU De-qiu(Postgraduate School,Chinese Academy of Sciences,Beijing,China,Post Code:100039),XIAO Rui,SONG Wen-ji,FENG Zi-ping(Key Laboratory on Renewable Energy , Natural Gas Hydrate,Guangzhou Energy Source Research Institute,Guangzhou,Post Code: 510640)
Abstract:Based on a kind of phase-change heat storage paraffin and with its liquid phase natural convection during its melting process being taken into consideration,a mathematical model for the paraffin melting process inside a rectangular cavity was established and used to perform a numerical simulation. In addition,the change of the temperature and flow field,and the shift of the interphase boundary during the paraffin melting process was analyzed. The heat transfer was intensified by utilizing an aluminium-made ...
Keywords:paraffin  phase change  intensified heat transfer  numerical simulation  waste heat utilization
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