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RESEARCH PAPERS

Thermodynamic Design of a Phase Change Thermal Storage Module

[+] Author and Article Information
M. Conti

Dipartimento di Matematica e Fisica, Universitá di Camerino, 62032 Camerino, Italy

C. Bellecci

Dipartimento di Fisica, Universitá della Calabria, 87030 Rende, Italy

Ch. Charach

Center for Energy and Environmental Physics, J. Blaustein Institute for Desert Research, Ben Gurion University of the Negev, Sede Boqer Campus, 84990, Israel

J. Sol. Energy Eng 118(2), 89-96 (May 01, 1996) (8 pages) doi:10.1115/1.2848036 History: Received October 01, 1994; Revised December 01, 1994; Online February 14, 2008

Abstract

This paper analyzes the irreversibilities due to the heat transfer processes in a latent heat thermal storage system. The Thermal Storage Module (TSM) consists of a cylindrical shell that surrounds an internal coaxial tube. The shell side is filled by a Phase Change Material (PCM); a fluid flows through the inner tube and exchanges heat along the way. The most fundamental assumption underlying this study is that the exergy of the hot fluid stream in the active phase is discharged into the environment and completely destroyed, unless it is partially intercepted by the storage system. A numerical study is conducted to identify and to minimize the thermodynamic losses of the storage and removal processes. The dependence of the second-law efficiency of the system on various design parameters is investigated and discussed.

Copyright © 1996 by The American Society of Mechanical Engineers
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