The application of entransy dissipation theory in optimization design of heat exchanger ∗

The optimization of heat exchanger design is investigated by applying the entransy dissipation theory and genetic algorithm. It is found that the role played by the fluid friction is not fully taken into account when the working fluid of heat exchanger is liquid in single-objective optimization approach. In order to circumvent this problem, a multi-objective optimization approach to heat exchanger design is established.

► Entransy dissipation theory is applied to the optimization design of heat exchanger.
► Heat transfer entransy dissipation is far more than that caused by fluid flow.
► Frictional Entransy dissipation is neglected in single-objective optimization design.
► Frictional entransy dissipation is fully considered in multi-objective optimization.