Thermochemical seasonal solar heat storage in salt hydrates for residential applications - Influence of the water vapor pressure on the desorption kinetics of MgSO4.7H2O

被引：27

作者：

Ferchaud, Claire J. ^{[1
]}

Scherpenborg, Robbert A. A. ^{[1
]}

Zondag, Herbert A. ^{[1
]}

de Boer, Robert ^{[1
]}

机构：

[1] Energy Res Ctr Netherlands, ECN, Petten, Netherlands

来源：

2013 ISES SOLAR WORLD CONGRESS | 2014年 / 57卷

关键词：

seasonal solar heat storage; sorption process; MgSO4.7H(2)O; water vapor presssure; kinetic study;

D O I：

10.1016/j.egypro.2014.10.252

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：

An interesting thermochemical material for compact seasonal heat storage is magnesium sulfate heptahydrate MgSO4 center dot 7H(2)O. Previous studies in the field showed that this material presents a storage energy density of 1 GJ/m(3) when the material is built in a TC storage system with a 50% porosity packed bed reactor. However, the material has slow reaction kinetics under the low vapor pressure typically occurring in a seasonal heat storage (13 mbar). The kinetic study presented in this paper shows that a higher water vapor pressure of 50 mbar increases the reaction kinetics of the dehydration process of MgSO4 center dot 7H(2)O, improving the performance of the material. (C) 2014 The Authors. Published by Elsevier Ltd.

引用

页码：2436 / 2440

页数：5

共 5 条

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[2] Study of the reversible water vapour sorption process of MgSO4•7H2O and MgCl2•6H2O under the conditions of seasonal solar heat storage[J]. Ferchaud, C. J.;Zondag, H. A.;Veldhuis, J. B. J.;de Boer, R. 6TH EUROPEAN THERMAL SCIENCES CONFERENCE (EUROTHERM 2012), 2012
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