Thermal and exergetic analysis of Metal Foam-enhanced Cascaded Thermal Energy Storage (MF-CTES)

被引：96
|
作者：
Tian, Y. [1 ]
Zhao, C. Y. [2 ]
机构：
[1] Univ Warwick, Sch Engn, Coventry CV4 7AL, W Midlands, England
[2] Shanghai Jiao Tong Univ, Sch Mech Engn, Shanghai 200240, Peoples R China
来源：
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER | 2013年 / 58卷 / 1-2期
基金：
英国工程与自然科学研究理事会; 中国国家自然科学基金;
关键词：
Metal foam; Heat transfer enhancement; Exergy; Cascaded Thermal Energy Storage; Brinkman-Forchheimer; Enthalpy method; LATENT-HEAT STORAGE; PHASE-CHANGE MATERIALS; CONDUCTIVITY ENHANCEMENT; PCMS; OPTIMIZATION; CONVECTION;
D O I：
10.1016/j.ijheatmasstransfer.2012.11.034
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
Metal Foam-enhanced Cascaded Thermal Energy Storage (MF-CTES) has been proposed to solve the problem of poor heat transfer during heat exchange process, which is caused by unavoidable decrease of temperature differences. This paper conducts a theoretical study examining the overall thermal performance of Single-stage Thermal Energy Storage (STES), Cascaded Thermal Energy Storage (CTES) and MF-CTES, with both heat exchange rate and exergy efficiency being considered. The main findings are: heat exchange rate of STES is improved by CTES (up to 30%), and is further improved by MF-CTES (by 2-7 times); exergy efficiency of STES cannot be significantly improved by CTES (-15% to +30%), nor by MF-CTES; exergy transfer rate of STES is increased by CTES (up to 23%), and is further increased by MF-CTES (by 2-7 times). (c) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码：86 / 96
页数：11
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