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Refrigerant 134a enters a compressor operating at steady state as saturated vapor at -8 degress celcius and exits at a pressure of 12 bar. The isentropic compressor efficiency is 70%. Heat transfer between the compressor and its surroundings can be ignored. Kinetic and potential energy effects are also neligible. Determine the exit temperature in degrees celcius and the work input (-Wcv/m), in kJ/kg of refrigerant flowing.
wouldnt the initial pressure of a friction-less piston-cylinder assembly that contains a water-vapor mixture be 200 kpa
a long power transmission cable is buried at a depth ground to cable centerline distance of 2 meters. the cable is
find the equation pu v of a surface of revolution obtained by revolving a profile curve on the xy-plane about the
the torsional assembly shown in figure consists of a solid bronze gb 45 gpashaftcd and hollow aluminium alloyga28 gpa
a seismic instrument has a natural frequency of 20 hz and a damping ratio of 0.65. determine the maximum input
measurements of drag force are made on a model automobile in a towing tank filled with fresh water. the model length is
water is being pumped from a large lake to a reservoir 25m above at a rate of 25 ls by a 10kw shaft pump. if the
What is the maximum allowable pressure if a factor of safety of 4 is to be used and what pressure would a strain of 40 pc indicate?
air flows through a well-insulated nozzle operating at steady state. at the inlet the pressure is 5 bar the temperature
consider an adiabatic turbine with an isentropic efficiency of 85. the inlet pressure and temperature are 3.50 mpa and
the wear resistance of a steel shaft is to be improved by nitrogen hardening of its surface. the initial nitrogen
gasoline car enginea gasoline car engine has a compression ratio of 8. air enters the cylinders of the engines at 60of.
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