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Heat exchanger design can improve the performance of PCMs

According to a recent review article, optimising the design of heat exchangers in latent heat thermal energy storage systems (LHTES) is one way of improving the thermal conductivity of phase change materials (PCMs).

The main advantage of phase change materials (PCMs) is their high heat capacity per unit volume and their almost constant phase change temperature. However, low thermal conductivity is one of the main drawbacks of PCMs, resulting in slow heat transfer. This may restrict the potential applications...

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