without including a pinch analysis of EHEs. In this part of the study
we found certain systematic trends. In particular it was found that
with internal heat recovery, the thermal efficiencies averaged
over all substances amount to about 70% of the Carnot efficiency
at given Tmax and Tmin. The effect of the individual substances
is reflected in an increase of hthþ with the critical temperature Tc
which is modest for the aromates and siloxanes.