A single-acting, twin cylinder 15.25 x 15.25-cm. compressor receives saturated ammonia vapor at -18°C and discharges it at 1514.3 kPa. The system is used to produce ice at a final temperature of-10°C from water at 27°C. The compressor runs at 450 rpm with an actual volumetric efficiency of 78%. Assume compression and mechanical efficiencies to be 82% and 88%, respectively. Calculate the following: (a) capacity of the system in tons of refrigeration, (b) brake hp
A single-acting, twin cylinder 15.25 x 15.25-cm. compressor receives saturated ammonia vapor at -18°C and discharges it at 1514.3 kPa. The system is used to produce ice at a final temperature of-10°C from water at 27°C. The compressor runs at 450 rpm with an actual volumetric efficiency of 78%. Assume compression and
Ans. (a) 17.04 TR, (b) 32 hp, (c) 8.37 tons, (d) 3.4, 2.79
SOLVE PROPERLY
Step by step
Solved in 4 steps with 4 images