8-12 July 2013
Africa/Johannesburg timezone
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Experimental Characterisatics of small oil Thermal Energy Storage (TES) tank for domestic applications

Presented by Ms. Abigail PHORI on 10 Jul 2013 from 17:40 to 18:40
Type: Poster Presentation
Session: Poster2
Track: Track F - Applied Physics

Abstract

A small thermal energy storage (TES) tank is designed to test the thermal performance of oil for domestic heat storage applications. Charging experiments to store thermal energy are done using an oil circulating coil in contact with a hot plate. Discharging experiments to extract the energy stored are performed using an oil heat exchanger immersed in a water bath. The temperature distribution along the height of the storage as a function of flow rate is monitored for the charging and discharging experiments. The energy and exergy stored are evaluated for each experimental test. Results of the experimental tests indicate various degrees of thermal stratification along the height of the storage tank. Lower flow-rates are suggested to maintain a reasonable degree of thermal stratification during charging. For discharging, high flow-rates enable a faster rate of energy extraction at the expenses of a loss in thermal stratification. Water boiling for simple domestic cooking applications is also found to be possible using the experimental setup. Keywords: Charging and discharging; oil storage tank; thermal stratification; energy and exergy stored; water boiling; flow rate

Award

Yes

Level

MSc

Supervisor

Prof S.H. Taole(simeon.taole@nwu.ac.za) and Dr A. Mawire(ashmore.mawire@nwu.ac.za) both form NWU-Mafikeng Campus.

Paper

no

Primary authors

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