An ideal air standard brayton cycle operates at steady state with compressor inlet conditions of 300 K and 100 kPa and fixed turbine inlet temperature of 1700 K. for the cycle: a) determine the net power developed per unit mass flowing in kJ/kg, and the thermal efficiency for a compressor pressure ratio of 8
b) plot the net power developed per unit mass flowing , in KJ/kg , and the thermal efficiency, each versus compressor pressure ratio ranging from 2 to 50

For the closed feedwater heater below, feedwater enters state 3 at a pressure of 2000 psia and temperature of 420 °f at a rate of ix10 ibhr. the feedwat extracted steam enters state 1 at a pressure of 1000 psia and enthalpy of 1500 btu/lbm. the extracted er leaves at an enthalpy of 528.7 btu/lbm steam leaves as a saturated liquid. (16) a) determine the mass flow rate of the extraction steam used to heat the feedwater (10) b) determine the terminal temperature difference of the closed feedwater heater