Study of Latent Accumulator Storage
by Heat Transfer Fluid (HTF) and External Heat Source (EHS)
B. Abouelkhayrat1*, J. Lahjomri1, A. Oubarra1
1 Hassan II University, Faculty of Sciences Ain Chock, Laboratory of Mechanics,
* Corresponding author: E-mail: email@example.com
Received: 20 June 2012; revised version accepted: 29 September 2012
Numerical study of thermal energy storage system is presented. The system under analysis consists of phase change material (PCM) encapsulated in a rectangular shape. In order to improve the latent heat accumulator as a thermal energy storage system, the heat transfer fluid (HTF) is associated with a heat external source (EHS) located at basis surfaces of the accumulator. By using enthalpy formulation, a two-dimensional model of the system is presented and validated by comparing numerical predictions with the analytical solution available in the literature. The paper discusses the effect of external source on time of complete melting of the PCM and the optimization of the source position. Results show that the selected location of the source is important to enhance heat transfer to PCM. The model is also used to assess the effects of various values of external heat flux, and the location area size of source on the system performance.
Keywords: Thermal energy storage system; Phase change material; External Heat Source; Latent heat; Accumulator.