Modeling and optimization of a shell and louvered fin mini-tubes heat exchanger in an ORC powered by an internal combustion engine

Modeling and simulation results are presented to define an optimal design in the whole map of working conditions for a heavy duty diesel engine and a light duty gasoline engine, in order to maximize the overall system efficiency (ORC+ICE). The length and weight of the heat exchanger are consistent with the use in automotive and truck applications, while an increase of the overall system efficiency up to 9% can be achieved.