The operating mode of the storage (idle, charging, discharging) is selected by comparing the air temperature at
the solar receiver outlet with the maximum temperature at the combustion chamber inlet (TCCh,in,max) and by
considering the storage status. The storage is empty/full when the average temperature reaches 110 % of the
compressor outlet temperature/ TCCh,in,max respectively. The air mass flow-rate in the compressor and in the
combustion chamber remains constant in all operating modes. The air flow circulates through the storage unit from
point 1 to point 2 (or from 2 to 1) when the storage is discharged (charged, respectively). In charging mode, a
blower is used to push the air through the storage. The air mass flow-rate through the solar receiver is increased
accordingly. A high pressure drop through the solar receiver decreases the turbine efficiency. Therefore a maximal
value of the air flow-rate through the solar receiver is considered. In discharging mode, the receiver is partially or
fully by-passed, according to the solar irradiation and to the temperature of the storage.
The operating mode of the storage (idle, charging, discharging) is selected by comparing the air temperature at
the solar receiver outlet with the maximum temperature at the combustion chamber inlet (TCCh,in,max) and by
considering the storage status. The storage is empty/full when the average temperature reaches 110 % of the
compressor outlet temperature/ TCCh,in,max respectively. The air mass flow-rate in the compressor and in the
combustion chamber remains constant in all operating modes. The air flow circulates through the storage unit from
point 1 to point 2 (or from 2 to 1) when the storage is discharged (charged, respectively). In charging mode, a
blower is used to push the air through the storage. The air mass flow-rate through the solar receiver is increased
accordingly. A high pressure drop through the solar receiver decreases the turbine efficiency. Therefore a maximal
value of the air flow-rate through the solar receiver is considered. In discharging mode, the receiver is partially or
fully by-passed, according to the solar irradiation and to the temperature of the storage.
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