Conduction-Controlled Phase-Change Energy Storage With Radiative Heat Addition

[+] Author and Article Information
A. Prasad, S. P. Singh

Mechanical Engineering Department, Regional Institute of Technology, Jamshedpur, India 831014

J. Energy Resour. Technol 116(3), 218-223 (Sep 01, 1994) (6 pages) doi:10.1115/1.2906446 History: Received September 10, 1992; Revised February 10, 1994; Online April 16, 2008


Thermal energy storage in a phase-change material due to latent heat of fusion caused by conduction-controlled melting during radiative heat injection is considered. It is solved employing variational, integral, and quasi-steady methods. They yield closed-form solutions which are functions of the Stefan number, St, and the surrounding temperature. The results for the design parameters for the storage system obtained from these methods exhibit insignificant variation and are unaffected by the surrounding temperature, θa , for St<0.1. The second law efficiency for this storage is devised. It is insensitive to changes in St and the heat absorption depth, ηm , for θa ≤ 1.2.

Copyright © 1994 by The American Society of Mechanical Engineers
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