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ISSN Online: 2379-1748

ISBN Flash Drive: 978-1-56700-483-0

ISBN Online: 978-1-56700-482-3

4th Thermal and Fluids Engineering Conference
April, 14–17, 2019 , Las Vegas, NV, USA

ON THE EFFECTS OF POROUS INSERTS ON THE IMPROVEMENT OF LATENT HEAT THERMAL ENERGY STORAGE SYSTEMS CHARGING PERFORMANCE

Get access (open in a dialog) pages 1773-1777
DOI: 10.1615/TFEC2019.tes.028102

Abstract

In the current work, the effect of porous insert on the performance of a shell and tube latent heat thermal energy storage system is numerically investigated. The working fluid flows in the tube while the PCM is stored in the shell. A transient numerical model is developed to simulate the charging process of the system. The effects of porous insert position and configuration are studied on the total melting time and the stored energy in the system. The results showed that all the cases with porous inserts have significantly lower melting time compared to the case without any insert. Fully filling the annuls with the metal foam decreases the melting time by 87% while placing the metal foam around the inner tube leads to a reduction of melting time by 79%. Among all the considered cases, inserting the metal foam around the inner tube (with 50% filling ratio) leads to the largest stored energy in the system.