Impact of Mechanical Design on Printed Circuit Heat Exchangers

This technical report discusses the impact of mechanical design issues on Printed Circuit Heat Exchangers (PCHEs) within the context of the Supercritical Carbon Dioxide (SCO2) Brayton cycle. It outlines the significance of power conversion cycle efficiency in modern power plants and the role of heat exchangers in achieving higher efficiencies. The report details the construction and advantages of PCHEs, including their ability to operate at high pressures and temperatures while maintaining close temperature approaches. It also addresses misconceptions surrounding PCHE performance, emphasizing the importance of mechanical design considerations that influence the final geometry of the heat exchangers. The report aims to clarify assumptions made in previous studies and presents the challenges faced in the engineering of PCHEs. The findings are based on over 25 years of experience in manufacturing PCHEs and highlight the necessity for accurate understanding of their design to optimize performance in power generation applications.