Continue Rankine Cycle Performance Trends Effect of condensing pressure on performance: Lower condenser pressure increase work output at the same heat input >Increase in efficiency -Lower limit depends on environmental temperature P4<P Lowering pressure Increase in Wnet decreases quality →Must increase T3to keep quality constant S 上游充通大率 May9,2018 7 SHANGHA BAO TONG LINIERSITYMay 9, 2018 7 Continue Rankine Cycle Performance Trends Effect of condensing pressure on performance: ‐ Lower condenser pressure increase work output at the same heat input Increase in efficiency ‐Lower limit depends on environmental temperature ‐ Lowering pressure decreases quality  Must increase T3 to keep quality constant