Abstract
This paper describes numerical methodologies of the entropy generation analysis in combustion engines radiators concerning their energetically optimisation. Entropy generation is the parameter to quantify the extent of irreversibility and it can be calculated as difference between the entropy change of system and the net entropy transport into the system. According to the second law of thermodynamics, entropy generation is always a positive quantity. It is also, a unique quantity to measure the extent of irreversibility of thermodynamic processes. In this sense, is studied the thermal efficiency of the combustion engines radiators using the entropy generation analysis. The study is illustrated by means of a numerical exemplification.
Keywords: Radiator, entropy generation, optimization, efficiency