High temperature phase change thermal energy storage

Are phase change materials suitable for thermal energy storage?

Phase change materials (PCMs) having a large latent heat during solid-liquid phase transition are promising for thermal energy storage applications. However, the relatively low thermal conductivity of the majority of promising PCMs (<10 W/ (m ⋅ K)) limits the power density and overall storage efficiency.

Can phase change materials reduce the volume of heat storage units?

However, rather low thermal capacity of sensible heat storage materials leads to considerable volumes heat storage units (HSU). Therefore last decades the researchers place emphasis on phase change materials (PCM) in which heat storage is carried out due to latent heat of fusion. Application such PCMs allows to lower the volume of HSU essentially.

What are thermal energy storage methods thermochemical storage?

Thermal energy storage methods thermochemical storage. The present review article focuses mainly on latent heat storage with a transition from solid to liquid phase for reasons explained further on. 2.1. Sensible heat storage Sensible heat storage (SHS) involves heating a material, without actually causing a phase change in it.

What happens if a material is further heated after a phase change?

If the material is further heated after the phase change a third term appears in the equation to account again for sensible heat storage. Materials used for latent heat thermal energy storage are known as phase change materials (PCMs). The PCM may undergo solid–solid, solid–liquid and liquid–gas phase transformations. 2.2.1.

Can high temperature phase change materials be used as storage media?

High temperature phase change materials High temperature PCMs with melting temperatures above 300 °C, which for their melting point and storage capabilities have the potential for being used as storage media in solar power plants or industrial waste heat recovery systems, are reviewed.

Do high-temperature phase change heat storage materials undergo repeated cycles of fusion and solidification?

In the literature, there is not enough information concerning behavior of high-temperature phase change heat storage materials, undergone to repeated cycles of fusion and solidification. Below we will consider some works, in which this problem was studied.