A. an ideal vapor compression refrigeration cycle with r-134a as the working fluid. saturated vapor enters the compressor at -10°c and saturated liquid leaves the condenser at 2 mpa. the mass flow rate through the unit is 10 kg/min. determine the refrigeration capacity in tons. b. the volumetric analysis of a gas mixture shows that it consists of 70% nitrogen, 20% carbon dioxide, and 10% carbon monoxide. if the pressure and temperature of the mixture is 140 kpa and 40°c, what is the percent of carbon monoxide by mass?

At steady state, air at 200 kpa, 325 k, and mass flow rate of 0.5 kg/s enters an insulated duct having differing inlet and exit cross-sectional areas. the inlet cross-sectional area is 6 cm2. at the duct exit, the pressure of the air is 100 kpa and the velocity is 250 m/s. neglecting potential energy effects and modeling air as an 1.008 kj/kg k, determine ideal gas with constant cp = (a) the velocity of the air at the inlet, in m/s. (b) the temperature of the air at the exit, in k. (c) the exit cross-sectional area, in cm2