文章基本信息

标题：Preliminary investigation of thermal behaviour of PCM based latent heat thermal energy storage
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作者：Octavian G. Pop ; Lucian Fechete Tutunaru ; Lucian Fechete Tutunaru 等
期刊名称：E3S Web of Conferences
印刷版ISSN：2267-1242
电子版ISSN：2267-1242
出版年度：2018
卷号：32
页码：1-8
DOI：10.1051/e3sconf/20183201017
出版社：EDP Sciences
摘要：Solid-liquid phase change is used to accumulate and release cold in latent heat thermal energy storage ( LHTES ) in order to reduce energy consumption of air cooling system in buildings. The storing capacity of the LHTES depends greatly on the exterior air temperatures during the summer nights. One approach in intensifying heat transfer is by increasing the air’s velocity. A LHTES was designed to be integrated in the air cooling system of a building located in Bucharest, during the month of July. This study presents a numerical investigation concerning the impact of air inlet temperatures and air velocity on the formation of solid PCM , on the cold storing capacity and energy consumption of the LHTES . The peak amount of accumulated cold is reached at different air velocities depending on air inlet temperature. For inlet temperatures of 14°C and 15°C, an increase of air velocity above 50% will not lead to higher amounts of cold being stored. For Bucharest during the hottest night of the year, a 100 % increase in air velocity will result in 5.02% more cold being stored, at an increase in electrical energy consumption of 25.30%, when compared to the reference values.