An ideal diesel engine uses air as the working fluid. the volume of the cylinder is 1200 cmº at the beginning of the compression process, 75 cm at the end, and 150 cm after the heat-addition process. the state of air at the beginning of the compression process is 100 kpa and 17 °c. determine (a) the pressure at the beginning of the heat-rejection process, (b) the network per cycle, and (c) the mean effective pressure.

Acompressor receives the shaft work to decrease the pressure of the fluid. a)- true b)- false

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

How to increase the thermal officiency of an ideal simple rankino cycle? among these methods, which one is the best and why?