Abstract

The independency of the energy supply and energy demanding many applications require a technique of energy storage and retrieval. It is natural that energy demand varies with time which is frequently referred as peak and off-peak periods. Similarly, for example, utilization of solar energy is feasible in the daytime during which the energy demand is lesser. Due to this mismatch between the energy supply and demand, energy storage techniques have become popular nowadays. Substances that can absorb and release thermal energy by using Phase change materials (PCM) is a recent research topic have gained widespread popularity. These PCM involve heat interactions in the form of sensible and latent heat. This chapter articulate the analysis of performance of thermodynamic systems with PCM from the viewpoint of first law of thermodynamics.

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