What is it about?
Thermal energy storage (TES) is a technology that stocks thermal energy by heating or cooling a storage medium so that the stored energy can be used later for heating and cooling applications and for power generation. This paper provides a comprehensive review on the development of latent heat storage systems focused on heat transfer and enhancement techniques employed in phase change materials (PCMs) to effectively charge and discharge latent heat energy, and the formulation of the phase change problem.
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Why is it important?
The use of TES systems based on the latent heat capacity of PCMs is an efficient method for storing thermal energy. The enhancement in heat transfer can be accomplished by either increasing the heat transfer area of the storage system or increasing the thermal conductivity of the PCM. The phase change rate can be increased considerably by adding porous, high conductivity, and low-density materials. Additionally, the most common enhancement techniques involve the use of extended surfaces ( fins, heat pipes) or using multiple PCMs of different melting points.
Perspectives
Writing this article was a great pleasure because with the co-author we had long-term collaborations. This article ultimately leads to a greater involvement in the research of heat transfer in TES.
Professor emeritus/PHD Ioan Sarbu
Polytechnic University of Timisoara, Romania
Read the Original
This page is a summary of: Review on heat transfer analysis in thermal energy storage using latent heat storage systems and phase change materials, International Journal of Energy Research, October 2018, Wiley,
DOI: 10.1002/er.4196.
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