High temperature hot oil energy storage

What is high-temperature energy storage?

In high-temperature TES, energy is stored at temperatures ranging from 100°C to above 500°C. High-temperature technologies can be used for short- or long-term storage, similar to low-temperature technologies, and they can also be categorised as sensible, latent and thermochemical storage of heat and cooling (Table 6.4).

Can high-temperature thermal energy storage be used for power generation?

A previous paper presented the basics of high-temperature thermal energy storage for power generation: concepts, materials, and modelization One option for active direct thermal storage is the possibility of generating steam directly in the solar field ( ), and to use it as heat transfer fluid (HTF) and as storage media.

What is thermochemical heat storage?

Thermochemical heat storage is a technology under development with potentially high-energy densities. The binding energy of a working pair, for example, a hydrating salt and water, is used for thermal energy storage in different variants (liquid/solid, open/closed) with strong technological links to adsorption and absorption chillers.

Why is thermal energy storage important?

For increasing the share of fluctuating renewable energy sources, thermal energy storages are undeniably important. Typical applications are heat and cold supply for buildings or in industries as well as in thermal power plants. Each application requires different storage temperatures.

What is a high thermal diffusivity of a heat storage material?

A high thermal diffusivity of the heat storage material provides quick response to temperature differences, that is, quick charging and discharging. A high thermal effusivity leads to the storage of a large amount of heat.

What is sensitive heat storage?

Sensible heat storage is a mature technology. Different storage media (SM) are required for different temperature ranges. Water is used for temperatures up to 200 °C. For higher temperatures, SM in liquid state like thermal oil (up to 400 °C), molten salts (130–600 °C), or solid materials like rocks or ceramics (100–1300°C) are considered.