Mathematical modelling of rock-bed solar thermal storage tank

Karim, M.A. & Amin, Zakaria Mohd (2014) Mathematical modelling of rock-bed solar thermal storage tank. In 52nd Annual Conference, Australian Solar Energy Society (Australian Solar Council), 8-9 May 2014, Melbourne Convention and Exhibition Centre, Melbourne, Vic.

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Abstract

An important application of thermal storage is solar energy for power generation or process heating. Low temperature thermal storage in a packed rock bed is considered best option for thermal storage for solar drying applications. In this paper, mathematical formulations for conical and cylindrical rock bed storage tanks have been developed. The model equations are solved numerically for charging/discharging cycles. From the simulated results, it was observed that for the same aspect ratio between the diameter and the length of the thermal storages, the conical thermal storage had better performance. The temperature distribution was found to be more uniform in the truncated conical shape rock bed storage. Also, the pressure drop over long period of time in the conical thermal storage was lower than that of the cylindrical thermal storage. Hence, the amount of power required from a centrifugal fan was lower.

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ID Code: 94893
Item Type: Conference Paper
Refereed: Yes
Keywords: Thermal Storage, Rock-Bed, Conical Storage Tank, Cylindrical Storage Tank
ISBN: 9480646922195
Divisions: Current > Schools > School of Chemistry, Physics & Mechanical Engineering
Copyright Owner: Copyright 2014 [Please consult the author]
Deposited On: 13 Apr 2016 23:58
Last Modified: 15 Apr 2016 01:28

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