Modeling on heat storage performance of compressed air in a packed bed system

被引：90

作者：

Peng, Hao ^{[1
]}

Li, Rui ^{[1
]}

Ling, Xiang ^{[1
]}

Dong, Huihua ^{[1
]}

机构：

[1] Nanjing Tech Univ, Jiangsu Key Lab Proc Enhancement & New Energy Equ, Sch Mech & Power Engn, Nanjing 211816, Jiangsu, Peoples R China

来源：

APPLIED ENERGY | 2015年 / 160卷

基金：

中国国家自然科学基金;

关键词：

Phase change material (PCM); Compressed air; Packed bed; Thermal performance; Charge efficiency; THERMAL-ENERGY STORAGE; PRESSURE-DROP; PHASE-CHANGE; ROCK BED; PCM; TEMPERATURE; DESIGN; PARTICLES; CAPSULES;

D O I：

10.1016/j.apenergy.2015.09.029

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

Compressed Air Energy Storage (CAES) incorporates a Packed Bed Thermal Energy Storage (PBTES) represents a promising larger scale storage technology. The heat storage performance of compressed air (CA) in PBTES is presented and numerically analyzed in this paper. Phase change material (PCM) particles are used as the filler. The unsteady two-phase energy conservation equations considering the phase change phenomena inside the PCM particles are developed and solved numerically by finite difference method. This model has been validated with Izquierdo-Barrientos' experimental data. Then, the effects of porosity (epsilon), PCM particle diameter (d(p)), CA inlet pressure (P) and filling approach on PBTES thermal behaviors (such as temperature profiles, heat storage capacity and charge efficiency) are investigated. It was found that increasing particle diameter results in a decrease in the charge efficiency, and the charge efficiency increases with an increase in CA inlet pressure. The PBTES filled with three kinds of materials has better charge efficiency compared with the packed bed filled with single PCM or rock. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：1 / 9

页数：9

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