Analysis of Turbocharger Non-Adiabatic Performance

Turbocharging is nowadays the most commonly used method of engine supercharging. One of the important factors affecting the turbocharger performance is the heat transfer inside the turbocharger and from the turbocharger to the ambient. Heat transfer takes place due to the high temperature gradient between the turbine and the other components of the turbocharger as well as between the turbine and the ambient. This heat transfer causes underestimation of the measured compressor efficiency and overestimation of the turbine efficiency. This results in an inaccurate estimation of the compressor power and the turbine power.