Question

Include given, find, EFD, assumptions, basic equations and solution Water is the working fluid in a Rankine cycle. Superheated vapor enters the turbine at 10 MPa, 480 °C, and the condenser pressure is 6 kPa. Water exits the condenser as a saturated liquid. The turbine and pump have isentropic efficiencies of 80 and 70%, respectively. Determine for the cycle a) work developed by the turbine, in kJ per kg of steam flowing (b) work consumed by the pump, in k.J per kg of steam flowing, (c) heat transfer to the working fluid passing through the steam generator, in k.J per kg of steam flowing (d) heat transfer from the working fluid passing through the condenser, in k.J per kg of steam flowing (e) thermal efficiency (%), (f) compare the cycle net heat transfer to the cycle net work transfer and comment on the result an (g) sketch the process on a T - s diagram. Label states, show isobars, and indicate process directions. Boiler Turbine Condenser Cooling water Pump 4

Answer 1

' ( 480%) 2 tebire, Wr' Per work clueloped by the = 0.80 wィ hi-hr

Pump, wp VW 3

Ca in 卫JLA ·in bal.と Ф.in = 31 ss. 5 ,RJI h,' = 332), 4-lo 47.7 e 2213. 7 JP-31 un =。. 32 74 31 55-5 32.74-

乞w na .、 This gives the w.dsto as gaulsん