Fig. 9 shows the effects of the condenser outlet temperature 4 t on the total
exergy destruction d,t ex and the exergetic efficiency ex h for TVRC and MVRC. It is
observed that the trends of curves of the total exergy destruction d,t ex and the
exergetic efficiency ex h are opposite. Obviously, the exergy loss of the whole
condensation unit rises with an increase in 4 t .