ECOR 3800 Midterm: Exam-ECOR3400-1996March

• School: Carleton University
• Department: Engineering Common Core Courses
• Course: ECOR 3800
• Professor: All

Document Summary

The steam cycle shown below has a boiler pressure of 120 bars and a condenser pressure of 0. 10 bar. The steam is superheated to a temperature of 520 c. Determine the cycle efficiency and the mass flow rate required under ideal conditions, i. e. isentropic processes in the turbine and the pump, no pressure losses in the pipes and no stray heat transfer. For the same boiler and condenser pressures as in pan (a), determine the cycle efficiency if the pump efficiency is 80% and the turbine efficiency is 85%. In addition, there is 10 bars pressure drop and 40 c the boiler/superheater exit to the turbine inlet. in the pipes running temperature drop from. Sketch the cycles in (a) & (b) on a t-s diagram. Comment very briefly on the effect of the pressure and temperature drop between states (1) and (2) on the quality of the steam leaving the turbine.