Fully reheated compressed air energy storage

How is thermochemical recuperation integrated into advanced compressed air energy storage?

Advanced Compressed Air Energy Storage integrates thermochemical recuperation, where direct heat transfer is achieved between gas and solid. Both known and hypothetical redox reactions are considered. This integration enables a more stable turbine inlet temperature, leading to longer storage durations and higher round trip efficiencies.

What is advanced adiabatic compressed air energy storage?

Advanced Adiabatic Compressed Air Energy Storage (AACAES) is a technology for storing energy in thermomechanical form. This technology involves several equipment such as compressors, turbines, heat storage capacities, air coolers, caverns, etc.

What is Compressed Air Energy Storage (CAES)?

Compressed Air Energy Storage (CAES) is a method of energy storage. It suffers from low energy and exergy conversion efficiencies (ca. 50% or less) due to the inherent losses in compression, heat loss during storage, and the commonly employed natural gas-fired reheat prior to expansion.

What is a resistive heating system?

Resistive heating is a system used in thermochemical heat recuperation for compressed air energy storage to heat hot air (stream 2) to around 1150℃ (stream 3) through resistance. The heated stream then enters the packed bed and transfers heat with solid materials which can decompose endothermically.

Can compressed air energy storage improve the profitability of existing power plants?

Linden Svd, Patel M. New compressed air energy storage concept improves the profitability of existing simple cycle, combined cycle, wind energy, and landfill gas power plants. In: Proceedings of ASME Turbo Expo 2004: Power for Land, Sea, and Air; 2004 Jun 14–17; Vienna, Austria. ASME; 2004. p. 103–10. F. He, Y. Xu, X. Zhang, C. Liu, H. Chen

Why is direct heat storage in a packed bed important?

Direct heat storage in packed bed, where the compressed air circulates directly in the bed, is advantageous because it limits heat losses. But it becomes technically challenging and economically irrelevant for large volumes and high pressure of storage.