Abstract
Recently, electric power storage is more important to stabilize power demand supply balance and promote use of renewable energy. Then, we have paid attention to Compressed Air Energy Storage (CAES) gas turbine system as one of more than medium-size electric power storage system. Power generation unit of CAES is necessary to have high thermal efficiency and little restriction of location.
The advanced humid air gas turbine (AHAT) system that is a regenerative cycle using humidified air is expected to achieve higher thermal efficiency than gas turbine combined cycle power plant (GTCC) even though it does not require steam turbines, high combustion temperature, or high pressure ratio. Moreover, it has the advantages that work done by compressor can be reduced by water atomization cooling and the restriction of the location is less because a large amount of cooling water is unnecessary. So, this system is thought to be suitable for CAES.
In this paper, CAES systems utilizing the AHAT system are studied about its composition and the thermal efficiency.
