Afuel gas is delivered to an industrial plant by a 3-in sch 40 commercial steel pipe, 80 m long. the gas has molecular weight of 18, viscosity of 1 × 10−5 kg/(m/s) and = 1.4. the gas is available at 1 mpa and 75℃ and the required delivery pressure is 500 kpa. the mach number at the entrance is given as 0.05. assuming that the delivery is adiabatic, calculate the exit temperature, the superficial mass velocity and the exit mach number. verify if the expansion is in the choking flow regime or not.

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.

Asingle-geared blanking press has a stroke of 200 mm and a rated capacity of 320 kn. a cam driven ram is assumed to be capable of delivering the full press load at constant force during the last 15 percent of a constant-velocity stroke. the camshaft has an average speed of 90 rev/min and is geared to the flywheel shaft at a 6: 1 ratio. the total work done is to include an allowance of 16 percent for friction a) estimate the maximum energy fluctuation b) find the rim weight for an effective diameter of 1.2 m and a coefficient of speed fluctuation of 0.10

Agas is compressed from vi 0.3 m, p 1 bar to of v2 0.1 m3, p2--3 bar. pressure and volume are related linearly during the process. for the gas, find the work, in kj.