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RESEARCH PAPERS

Latent Thermal Storage Unit Using Form-Stable High Density Polyethylene; Part I: Performance of the Storage Unit

[+] Author and Article Information
M. Kamimoto, Y. Abe, S. Sawata, T. Tani, T. Ozawa

Electrotechnical Laboratory, Ibaraki 305, Japan

J. Sol. Energy Eng 108(4), 282-289 (Nov 01, 1986) (8 pages) doi:10.1115/1.3268107 History: Received November 01, 1985; Online November 11, 2009

Abstract

A latent thermal storage unit of 30 kWh using form-stable high density polyethylene (HDPE) rods has been developed mainly for solar thermal applications, and heat transfer experiments have been carried out. A direct contact heat transfer technique between HDPE rods and ethylene glycol (EG: a heat transfer fluid) is adopted. Charge and discharge characteristics have been obtained for various thermal input/output and different initial temperature profiles in the storage unit. The direct contact heat transfer and a formation of a clear thermocline provide a good performance for all the cases. Discussions are given of thermal efficiency, storage density, and thermal insulation.

Copyright © 1986 by ASME
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