Question: The compression ratio of an air-standard Otto cycle is 10. Prior to the isentropic compression process, the air is at 100kPa,27°C and 400cm3 (the cylinder volume at BDC). The …

A steam turbine having an isentropic turbine efficiency of 90% drives an air compressor having an isentropic compressor efficiency of 85%. Steady-state operating data are provided on the figure. …

Question: Consider a modification of the air-standard Otto cycle in which the isentropic compression and expansion processes are each replaced with polytropic processes having n=1.25.

Assuming isentropic flow, air as an ideal gas, and constant specific heats determine the state at several locations in the system. Note: The specific heat ratio and gas constant for air are given as k=1.4 and …

Question: Skill 67: What is the equation for the isentropic efficiency of a valve? Skill 6 7: What is the equation for the isentropic efficiency of a valve? Here’s the best way to solve it.

 Isentropic efficiency of the turbine is 85%.  Saturated liquid water at 0.06 bar exits the condenser (State 3 ) and enters an adiabatic pump which increased the A Rankine cycle using water as the …

Question: Consider the isentropic flow over an airfoil. The freestream conditions are T 245 K and p. 4.35 x 104 N/m2. At a point on the airfoil, the pressure is 3.9 x 104 N/m2 Calculate the density at this …

Question: The compressor in a refrigerator compresses saturated R-134a vapor at O°F to 200 psia. Calculate the work required by this compressor, in Btu/lbm, when the compression process is …

6.162 As shown in Fig. P6.162, a steam turbine having an isentropic turbine efficiency of 90% drives an air compressor having an isentropic compressor efficiency of 85%.  Steadystate …

Question: Assume that the flow of air through a given duct is isentropic. Atone point in the duct, the pressure and temperature are p1 = 1800lb/ft2 and T1 = 500oR, respectively. At asecond point, the …