Phase change energy storage material research ppt

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 PCM be used in thermal energy storage?

We also identify future research opportunities for PCM in thermal energy storage. Solid-liquid phase change materials (PCMs) have been studied for decades, with application to thermal management and energy storage due to the large latent heat with a relatively low temperature or volume change.

How do phase change composites convert solar energy into thermal energy?

Traditional phase change composites for photo-thermal conversion absorb solar energy and transform it into thermal energy at the top layers. The middle and bottom layers are heated by long-distance thermal diffusion.

How does a PCM control the temperature of phase transition?

By controlling the temperature of phase transition, thermal energy can be stored in or released from the PCM efficiently. Figure 1 B is a schematic of a PCM storing heat from a heat source and transferring heat to a heat sink.

What are the design principles for improved thermal storage?

Although device designs are application dependent, general design principles for improved thermal storage do exist. First, the charging or discharging rate for thermal energy storage or release should be maximized to enhance efficiency and avoid superheat.

What is a composite phase change material thermal buffer?

A composite phase change material thermal buffer based on porous metal foam and low-melting-temperature metal alloy. Appl. Phys. Lett. 116. Gomez-Vidal, J.C., and Tirawat, R. (2016). Corrosion of alloys in a chloride molten salt (NaCl-LiCl) for solar thermal technologies.