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Proceedings of Symposium on Energy Engineering in the 21st Century (SEE2000) Volume I-IV

ISBN Print: 1-56700-132-7

BEHAVIOR OF CHARGE AND DISCHARGE OF THERMAL ENERGY IN A STORAGE TYPE HEAT EXCHANGER

Abstract

Heat exchanger with thermal energy storage is a good candidate that suited for the waste heat recovery. Phase change material is very suited for this kind of application for the use of latent heat. A heating chamber with enhancement coil was built to study the behavior of pentaerythritol (C(CH30)4) subjected to heating and cooling process. The specific heat was measured and latent heat was calculated for the samples after different cycles of charge and discharge process. Then a numerical simulation was performed to understand the transient temperature distribution of pentaerythritol subjected the constant input heat flux. Finally, a shell and tube heat exchanger was modified to act as a storage type heat exchanger and pentaerythritol was chosen as the thermal energy storage medium and filled inside the tube. A hot air generator with heating capacity 36kW and flow rate 26 CMM was used as the hot air supplier. The maximum temperature of the supplied air is 350°C. This full scale test facility was used to simulate the usage of storage type heat exchanger as a recupeator in a boiler.
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