Configurations for multiple thermal energy storages in thermal networks Online publication date: Thu, 27-Aug-2015
by Behnaz Rezaie; Bale V. Reddy; Marc A. Rosen
International Journal of Process Systems Engineering (IJPSE), Vol. 3, No. 1/2/3, 2015
Abstract: There are some conditions, depending on space availability, economics, project requirements, insulation, storage media and other issues, for which it may be advantageous to utilise several thermal energy storages (TESs) instead of one in thermal networks. Here, various configurations for multiple TESs are proposed and examined. First, one TES is investigated to determine the final temperature and energy recovery. Next, various configurations of multiple TESs are developed as functions of TES characteristics. In the parallel configuration, the TESs behave independently. This suggests that with the TES can consist of different storage media types and sizes, and that there is no restriction on initial TES temperature, while for the series configuration, the TESs are connected directly or indirectly through a heat exchanger. The general grid configuration is observed to exhibit characteristics of both series and parallel configurations.
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