Prospect analysis of hot and cold energy storage system

Can thermal and electric storage be integrated into heat and power systems?

Both thermal and electric storage can be integrated into heat and power systems to decouple thermal and electric energy generations from user demands, thus unlocking cost-effective and optimised management of energy systems.

What are sensible and latent thermal energy storage?

Sensible, latent, and thermochemical energy storages for different temperatures ranges are investigated with a current special focus on sensible and latent thermal energy storages. Thermochemical heat storage is a technology under development with potentially high-energy densities.

What determines the performance of underground thermal storage?

Generally, the performance of underground thermal storage is influenced by geographical and geological characteristic of the location – e.g., soil thermal conductivity and thermal capacitance, underground water, etc. – as well as the specific configuration chosen.

Which components are developed for latent thermal energy storage systems?

Furthermore, components for latent thermal energy storage systems are developed including macroencapsulated PCM and immersed heat exchanger configurations. For material development the following key points can be concluded.

What is a sensible heat storage system?

Due to being less expensive than LH-TES and TCS systems, sensible heat storage is suitable for both residential and industrial applications wherein hot water tanks were used. However, SH-TES requires the appropriate design of the systems as well as large volumes because of its low energy density.

What are the challenges of latent thermal energy storage?

One of the main challenges for latent thermal energy storages is the phase change itself which requires a separation of the storage medium and HTF. Furthermore, PCMs usually have a low thermal conductivity, which limits the heat transfer and power of the storage.