Thedelivery pressure of a two
stage compressor is 17.5 bar and theclearance volume of lp cylinder
is equal to 4% of swept volume. theatmospheric conditions are 1 bar
and 288 k. the starting pressurein lp cylinder is 1 bar and temp.
at the beginning of compressionin each stage is 326 k and the
intercooler pressure is 4 bar. theindex of polytropic law of
compression and expansion in both thestages is 1.25. determine
volumetric efficiency, work done
perkg of air and isothermal
efficiency.

An air compression refrigeration system is to have an air pressure of 100 psia in the brine tank and an allowable air temperature increase of 60°f for standard vapor compression cycle temperatures of 77 f entering the expansion cylinder and 14 f entering the compression cylinder, calculate the coefficient of performance a. 2.5 b 3.3 c. 4.0 d. 5.0

Most leaks in reciprocating air compressors can be detected and minimized by: (clo4) a)-detecting leakage areas using ultrasonic acoustic detector. b)-tightening joints and connections c)-replacing faulty equipment d)-all of the given options

A2-m rigid tank initially contains saturated water vapor at 100 kpa. the tank is connected to a supply line through a valve. steam is flowing in the supply line at 600 kpa and 300 c. the valve is opened, and steam is allowed to enter the tank until the pressure in the tank reaches the line pressure, at which point the valve is closed. a thermometer placed in the tank indicates that the temperature at the final state is 200°c. determine (a) the mass of steam that has entered the tank (b) the amount of heat transfer.