Accession Number : ADA113355

Title :   Thermal Energy Storage in Phase Change Material.

Descriptive Note : Final scientific rept. 1 Feb 81-31 Jan 82,

Corporate Author : VON KARMAN INST FOR FLUID DYNAMICS RHODE-SAINT-GENESE (BELGIUM)

Personal Author(s) : White,P ; Buchlin,J-M

PDF Url : ADA113355

Report Date : Mar 1982

Pagination or Media Count : 83

Abstract : The present study deals with an experimental investigation of low temperature thermal storage based on macroencapsulation of Phase Change Material (PCM). The storage performance capabilities of capsule bed, tube bank and tubular single-pass heat exchanger are compared. The tests are conducted on the VKI Solar Utility Network (SUN) which is a closed loop facility designed to study air heating systems. An original data acquisition chain based on two conversing microprocessors is developed to carry out mass flow, pressure drop and temperature measurements. The experimental results are interpreted on the basis of comparison with numerical predictions and they allow to draw the following conclusions. Each type of matrix has its own range of operation for practical application but from a heat transfer standpoint, the PCM capsule packing unit is strongly recommended. It is suggested to extend this investigation to the effect of Reynolds number to find optimum range for thermo-mechanical efficiency.

Descriptors :   *Heat exchangers, *Energy storage, *Heat transfer, *Thermal radiation, Predictions, Mass flow, Space capsules, Low temperature, Data links, Reynolds number, Phase transformations, Optimization, Air, Heating, Numerical analysis, Closed loop systems

Subject Categories : Air Condition, Heating, Lighting & Ventilating

Distribution Statement : APPROVED FOR PUBLIC RELEASE