Numerical investigation of PCM-based thermal energy storage system

被引：21

作者：

Bellan, Selvan ^{[1
]}

Gonzalez-Aguilar, Jose ^{[1
]}

Romero, Manuel ^{[1
]}

Rahman, Muhammad M. ^{[2
,3
]}

Goswami, D. Yogi ^{[2
,4
]}

Stefanakos, Elias K. ^{[2
,5
]}

机构：

[1] IMDEA Energy Inst, Mostoles 28935, Spain

[2] Univ S Florida, Clean Energy Res Ctr, Tampa, FL 33620 USA

[3] Univ S Florida, Dept Mech Engn, Tampa, FL 33620 USA

[4] Univ S Florida, Dept Chem & Biomed Engn, Tampa, FL 33620 USA

[5] Univ S Florida, Dept Elect Engn, Tampa, FL 33620 USA

来源：

INTERNATIONAL CONFERENCE ON CONCENTRATING SOLAR POWER AND CHEMICAL ENERGY SYSTEMS, SOLARPACES 2014 | 2015年 / 69卷

关键词：

Latent thermal energy storage; Thermocline system; Encapsulated phase change material; Molten salt; Concentrating solar power; PHASE-CHANGE; HEAT-TRANSFER;

D O I：

10.1016/j.egypro.2015.03.086

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：

A latent thermal energy storage system, which consists of sodium nitrate filled spherical capsules in a cylindrical tank, is analyzed for concentrating solar power plant applications. The high temperature synthetic oil, Therminol 66, is used as heat transfer fluid. A numerical model is developed to investigate the behavior of the system. The developed model is validated using the reported experimental and numerical data. The influence of capsule size and the flow rate of heat transfer fluid (HTF) on the temperature distribution, fluid flow, melting and solidification of the system is studied. The natural convection effect present in the liquid region during melting is resolved by the effective thermal conductivity, which is calculated by enthalpy formulation method. The results indicated that the heat transfer rate is increased and eventually the charging/discharging time is decreased when the capsule size is decreased, or the HTF flow rate is increased. (C) 2015 The Authors. Published by Elsevier Ltd.

引用

页码：758 / 768

页数：11

共 18 条

[1] Numerical analysis of the thermal behaviour of a shell-and-tube heat storage unit using phase change materials [J].