Adesktop computer is to be cooled by a fan whose flow rate is 0.34 m3 /min. determine the mass flow rate of air through the fan at an elevation of 3400 m where the air density is 0.7 kg/m3 . also, if the average velocity of air is not to exceed 110 m/min, determine the diameter of the casing of the fan. (page 215).

Refrigerant 134a enters an insulated compressor operating at steady state as saturated vapor at -26°c with a volumetric flow rate of 0.18 m3/s. refrigerant exits at 9 bar, 70°c. changes in kinetic and potential energy from inlet to exit can be ignored. determine the volumetric flow rate at the exit, in m3/s, and the compressor power, in kw.