A fixed-bed regenerative heat exchanger has been developed as a system for enabling the thermohydraulic connection to be made between a volumetric solar receiver (non-pressurized air circuit) and a Brayton turbine (a pressurized air circuit) in the context of the CAPTure project. The design of the ceramic beds is addressed in terms of selecting ceramic block geometries and matrix sizing. The control strategy for the regenerative system is also developed, thus establishing the proper sequence for connection changes to enable the turbine to operate continuously. Both designs are approached and verified via simulation, for which detailed, dynamic bed and complete system models are developed.
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