Answer in Molecular Physics | Thermodynamics for Aqib Abdullah #144451
February 21st, 2023
The schematic shows a steam power plant in which the turbine develops 1050 kW. The heat supplied to the steam in the boiler is 5040 kJ/kg, the heat rejected by the steam to the cooling water in the condenser is 3780 kJ/kg and the feed pump work required to pump the condensate back into the boiler is 6 kW.
Calculate:
a. the steam flow rate in kg/s.
b. The amount of heat transferred for 10 kg of steam. Follow your book’s sign convention.
a. “Q_{Net} = W_{Net}”
“m_{sfr} times (5040 u2013 3780) = (1050 u2013 6)”
“m_{sfr} = frac{1044}{1260} = 0.82 ;kg/s”
b. “Q_{Net} = m times 5040 = 10 times 5400 = 54000 ;kJ”
