- de Lucia, M. and Bejan, A., Thermodynamics of energy storage by melting due to conduction or natural convection,
Trans. ASME, J. Sol. Energy Eng. (USA), vol. 112 no. 2
pp. 110 - 16 .
(last updated on 2007/04/08)
The authors describe the most basic thermodynamic aspects of the process of energy storage by melting of a phase change material when the energy source is a stream of hot single-phase fluid. The first part of the paper considers the melting process ruled by pure conduction across the liquid phase, and the second part deals with the quasi-steady melting dominated by natural convection. The paper establishes the relationship between the total irreversibility of the melting process and design parameters such as the number of heat transfer units of the heat exchanger placed between the energy source and the phase change material, the duration of the melting process, and the position of the energy storage process on the absolute temperature scale
heat transfer;melting;thermal analysis;thermal energy storage;thermodynamics;