• This Q will come in my exam , could you please solve it step by step and explain it ?,
Steam is the working fluid in an ideal Rankine cycle. Saturated vapor enters the turbine at 8.0MPa and saturated liquid exits the condenser at a pressure of 0.008MPa. The net power output of the cycle is 100MW. Determine for the cycle (a) the thermal efficiency, (b) the back work ratio, (c) the mass flow rate of the steam, in k(g)/(h), (d) the rate of heat transfer, Q_(in)^(Ë™), into the working fluid as it passes through the boiler, in MW, (e) the rate of heat transfer, Q_(out )^(Ë™), from the condensing steam as it passes through the condenser, in MW, (f) the mass flow rate of the condenser cooling water, in k(g)/(h), if cooling water enters the condenser at 15deg C and exits at 35deg C.
Solution
Known: An ideal Rankine cycle operates with steam as the working fluid. The boiler and condenser pressures are specified, and the net power output is given.
Find: Determine the thermal efficiency, the back work ratio, the mass flow rate of the steam, in k(g)/(h), the rate of heat transfer to the working fluid as it passes through the boiler, in MW, the rate of heat transfer from the condensing steam as it passes through the condenser, in MW, the mass flow rate of the condenser cooling water, which enters at 15deg C and exits at 35deg C.
Schematic and Given Data:
Figure E8.1
Steam is the working fluid in an ideal Rankine cycle. Saturated vapor enters the turbine at 8.O MPa and saturated liquid ex its the condenser at a pressure of 0.008 MPa. The net power output of the cycle is 100 MW. Determine for the cycle (a) the thermal efficiency,(b) the back work ratio,c the mass flow rate of the steam, in kg/h,d the rate of heat transfer, Qin, into the working fluid as it passes through the boiler,in MW.e the rate of heat transfer. Qoutfrom the condensing steam as it passes through the condenser,in MW,(f the mass flow rate of the condenser cooling water, in kg/h, if cooling water enters the condenser at 15Cand exits at 35C
Solution Known:An ideal Rankine cycle operates with steam as the working fluid.The boiler and condenser pressures are specified and the net power output is given. Find:Determine the thermal efficiency.the back work ratio,the mass flow rate of the steam,in kg/h,the rate of heat trans fer to the working fluid as it passes through the boiler,in MW,the rate of heat transfer from the condensing steam as it passes through the condenser,in MW,the mass flow rate of the condenser cooling water,which enters at 15C and exits at 35C
Schematic and Given Data:
2iin
P= 8.0 MPa
Boiler
W
Turbine
1
Saturated
8.0 MPa
Condense
Cooling water
0.008 MPa
Pump
2
4
3
W
Saturated
liquid at O.008 MPa
Figure E8.1
