This last paper of the Next-CSP project presents a novel power block concept for flexible electricity dispatch in a Concentrating Solar Power (CSP) plant. The power block is based on intercooled-unfired regenerative closed air Brayton cycle that is connected to a pressurized solar air receiver. The Closed Brayton cycle uses a mass flow regulation system centered on the pressure regulation (auxiliary compressor and bleed valve) in order to control the Turbine Inlet Temperature (TIT). Doing so, the system is able to modulate turbine electricity production according to variations in the solar resource and changes in power electric demand.

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