International Journal of Applied Nanotechnology

Nano based Phase Change Materials for Thermal Storage Applications: A Review

  1. T.R. Heera
  2. Gengan Saravanan

Abstract

Conventional thermal energy storage systems have low energy storage densities and are incapable of undergoing isothermal storage process. Phase Change Materials (PCMs) are gaining attention as potential materials for thermal energy storage from intermittent renewable energy sources. Latent heat storage materials (LHS) called PCMs can release or absorb heat energy when a change in physical state occurs. Although PCMs have high energy storage density, their poor thermal conductivity remains a challenge in practical applications. Research efforts to combat the low thermal conductivity of PCMs has led to inclusion of nanoparticles in PCM matrix. The thermal conductivity of PCM containing materials can be tuned by nanoencapsulation in PCM matrix. The inclusion of nanoparticles in PCM matrix has been found to significantly improve the heat transfer mechanisms during charging and discharging cycles. This chapter throws light on the recent significant advances in nano based PCM that can be employed for thermal energy storage applications. In addition, the research gaps in enhancing the efficiency of PCM are discussed and certain suggestions for future works in this direction are provided.

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