Continue Rankine Cycle Performance Trends Effect of boiler pressure on performance: T Increasing boiler pressure Increase 3 3 decreases heat input at in Wnet max relatively constant work output Decrease >Increase in efficiency in Wnet Upper limit depends on heat supply temperature and materials \Possible? Also decreases quality S 上游充通大 Wednesday,May 03,2017 5 SHANGHAI JIAO TONG UNIVERSITYWednesday, May 03, 2017 5 Continue Rankine Cycle Performance Trends Effect of boiler pressure on performance: - Increasing boiler pressure decreases heat input at relatively constant work output  Increase in efficiency -Upper limit depends on heat supply temperature and materials - Also decreases quality TB Possible?