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Proceedings of the 25th National and 3rd International ISHMT-ASTFE Heat and Mass Transfer Conference (IHMTC-2019)

ISSN: 2688-7231 (Online)

Modelling of Open Thermochemical Energy Storage System for Space Heating using Reduced Order Model

Ankit Mukherjee
Department of Energy Science and Engineering, IIT Bombay

Rudrodip Majumdar
EEP, School of Natural Sciences and Engineering, National Institute of Advanced Studies, IISc campus

Sandip Kumar Saha
Department of Mechanical Engineering, Indian Institute of Technology, Bombay, Powai, Mumbai – 400076. Maharashtra, India

Chandramouli Subramaniam
Department of Chemistry, IIT Bombay

Lalit Kumar
Department of Energy Science and Engineering, IIT Bombay

DOI: 10.1615/IHMTC-2019.320
pages 187-192

Abstract

Thermochemical energy storage (TCES) systems are excellent alternatives for seasonal heat storage due to their high energy densities. In the present work, an open TCES system employed for space heating application based on strontium bromide-water vapour reactive pair is considered. A simplified one-dimensional numerical model of the reactive bed is developed and validated. Further, the effect of variation of the energy density of the reactive bed on the performance of the system is investigated. The global reaction advancement rate is observed to decrease substantially with the increase in the energy density of the reactive bed, for both hydration and dehydration processes. The ratio of the energy storage/extraction rate to the power consumed to blow the moist air through the reactive bed, during both hydration and dehydration processes, is found to decrease with an increasing energy density of the reactive bed.

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