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Nitrogen gas enters a diffuser at 100 kPa and 110 degrees C with a velocity of 205 m/s and leaves at a 110 kpa and 45 m/s. It is estimated that 2.5 kJ/kg of heat is lost from the diffuser to the surroundings at 100 kpa and 27 degrees C. The exit area of the diffuser is .04 m^2 . Accounting for the variation of the specific heats with temperature, determine:
a) the exit temperatureb) the rate of exergy destructionc) the second law efficiency of the diffuser
water vapor an ideal gas enters a diffuser expansion device at a pressyre of 0.70 bar a termperature of 160 c and a
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steam at 3 mpa and 400 degc is expanded to 30 kpa in an adiabatic turbine with an isentropic efficiency of 92 percent.
an inventor claims to have developed a refrigeration unit that maintains a cold space at -10degc while operating in a
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