Is thermal energy storage a reversible conversion of solar-thermal energy to chemical energy?

Concentrating solar power (CSP) with thermal energy storage has the potential for grid-scale dispatchable power generation. Thermochemical energy storage (TCES), that is, the reversible conversion of solar-thermal energy to chemical energy, has high energy density and low heat loss over long periods.

How is solar energy stored?

The liquid chemical makes it possible to store and transport the stored solar energy and release it on demand, with full recovery of the storage medium. The process is based on the organic compound norbornadiene that upon exposure to light converts into quadricyclane.

Can thermal energy be stored as chemical energy?

Thermal energy from the sun can be stored as chemical energy in a process called solar thermochemical energy storage (TCES). The thermal energy is used to drive a reversible endothermic chemical reaction, storing the energy as chemical potential.

Can solar energy be stored in a chemical liquid?

Researchers at Chalmers University of Technology in Sweden have demonstrated efficient solar energy storage in a chemical liquid. The stored energy can be transported and then released as heat whenever needed. The research is now presented on the cover of the scientific journal Energy & Environmental Science.

What is thermochemical energy storage (TCES)?

Thermochemical energy storage (TCES), that is, the reversible conversion of solar-thermal energy to chemical energy, has high energy density and low heat loss over long periods. To systematically analyze and compare candidate reactions for TCES, we design an integrated process and develop a general process model for CSP plants with TCES systems.

Why do we need energy storage systems?

*J.G.- A.: E-mail, [email protected] Among renewable energies, wind and solar are inherently intermittent and therefore both require efficient energy storage systems to facilitate a round-the-clock electricity production at a global scale.