What are thermochemical energy storage systems?

While the focus is on low-temperature applications such as residential heating, thermochemical energy storage systems are also being considered for industrial waste heat applications or for solar thermal power plants, with TCES seen as a promising option for high-temperature systems [Pardo2014].

What is thermochemical energy storage (TCES)?

Thermochemical energy storage (TCES) is a chemical reaction-based energy storage system that receives thermal energy during the endothermic chemical reaction and releases it during the exothermic reaction.

Can thermochemical thermal energy storage systems be used in power-to-heat applications?

In this work, a comprehensive review of the state of art of theoretical, experimental and numerical studies available in literature on thermochemical thermal energy storage systems and their use in power-to-heat applications is presented with a focus on applications with renewable energy sources.

How long can thermal energy be stored?

Depending on the application, and based on thermophysical and thermochemical reactions, thermal energy can be stored for short or long periods. There are three types of TES technolgies: Sensible heat storage (SHS), latent heat storage (LHS), and Thermochemical energy storage (TCES).

Can thermochemical energy storage be used for low- and medium-temperature applications?

Thermochemical energy storage has the potential to store energy for low- and medium-temperature applications. The advantages and possible drawbacks of the materials discussed in this paper are summarized in Table 14.

Is thermochemical storage a good option?

Because low-cost storage materials are often used, thermochemical storage is considered a promising option for medium- and long-term storage, offering the prospect of balancing weekly or seasonal discrepancies between available energy and demand. Theoretically, there are no losses during storage.