Latent heat storage constant temperature material

Why is latent heat storage important?

Latent heat storage has allured great attention because it provides the potential to achieve energy savings and effective utilization [1–3]. The latent heat storage is also known as phase change heat storage, which is accomplished by absorbing and releasing thermal energy during phase transition.

What is latent heat storage (LHS)?

Latent heat Storage. The latent heat storage (LHS) commonly uses the heat of fusion of melting and solidifying of material, rather than evaporation and condensation, due to the large volume change associated with the latter. The use of phase change materials (PCMs) as base materials for TES increased since the energy crisis in the 1970 s.

What is latent heat?

Latent heat provides substantially high energy storage density and maintains small temperature difference between the storage and release of heat . LHSMs can be of the form Solid–Solid (S–S), Solid–Liquid (S–L), Solid–Gas (S–G) and Liquid–Gas (L–G) based on the transformation type.

What is active latent heat storage?

The basic idea of active latent heat storage concepts is to transfer PCM through a heat transfer zone while the storage material undergoes phase change. In such a system, the storage capacity can be selected independently of the power, and control of the power transferred to or delivered from the PCM is straightforward.

Can latent heat and sensible heat be combined?

An interesting option for the realization of systems with high storage densities is the sequential combination of latent heat and sensible heat, using both the enthalpy change at the transition from phase A to phase B and the sensible heat storage in phase A and/or in phase B.

What is the enthalpy of a latent heat storage system?

A latent heat storage system using NaNO 3 as PCM with a melting temperature t PC of 306 °C and a phase change enthalpy of 177 kJ/kg is charged using saturated steam at 315 °C/105.5 bar. During discharge, saturated steam at 295 °C/80 bar is generated.