Question: Air is expanded in an adiabatic turbine of 90 percent isentropic efficiency from an inlet state of 2800 kPa 8 and 400 degree C to an outlet pressure of 150 kPa. Calculate the outlet temperature of …

9–37E A spark-ignition engine has a compression ratio of 10, an isentropic compression efficiency of 85 percent, and an isentropic expansion efficiency of 95 percent. At the beginning of the compression, …

The isentropic efficiency of the compressor is 80 percent, and that of the gas turbine is 85 percent. The bottoming cycle is a simple ideal Rankine cycle operating between the pressure limits of 7 MPa and …

The isentropic efficiency of the turbine and the pump are 85 % and 90 %, respectively. Steam A steam power plant operates on a reheat Rankine cycle. Steam enters the high-pressure turbine at 12.5 …

Question: The compression ratio of an air-standard Otto cycle is 9.5. Prior to the isentropic compression process, the air is at 100 kPa, 35°C and 600 cm3 . The temperature at the end of the isentropic …

Question: Consider the isentropic flow over an airfoil. The freestream conditions correspond to a standard altitude of 10,000 ft and M∞= 0.82. At a given point on the airfoil, M = 0.78. Calculate p and …

Question: The figure shows isentropic expansion through a turbine at steady state. The area on the diagram that represents the work developed by the turbine per unit mass flowing is area enclosed by …

A gas-turbine power plant operates on the simple Brayton cycle with air as the working fluid and delivers 32 MW of power. The minimum and maximum temperatures in the cycle are 310 K and 900 K, …

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.

Air within a piston-cylinder assembly, initially at 12 bar, 620 K, undergoes an isentropic expansion to 1.4 bar. Stray heat transfer from the heat exchanger to its surroundings and kinetic and potential energy …