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Repeat Prob. 1–71E by replacing Repeat Prob. 1–71E by replacing air by oil with a specific gravity of 0.69. Is this the question you were looking for? If so, place your order here to get started!

Refrigerant-134a enters the compressor Refrigerant-134a enters the compressor of a refrigeration system as saturated vapor at 0.14 MPa, and leaves as superheated vapor at 0.8 MPa and 60째C at a rate of 0.06 kg/s. Determine the rates of energy transfers by mass into and out of the compressor. Assume the kinetic and potential energies to […]

Refrigerant-134a enters the compressor of a Refrigerant-134a enters the compressor of a refrigerator at 140 kPa and -10째C at a rate of 0.3 m3/min and leaves at 1 MPa. The isentropic efficiency of the compressor is 78 percent. The refrigerant enters the throttling valve at 0.95 MPa and 30째C and leaves the evaporator as saturated […]

Refrigerant-134a enters the coils of the evaporator Refrigerant-134a enters the coils of the evaporator of a refrigeration system as a saturated liquid–vapor mixture at a pressure of 160 kPa. The refrigerant absorbs 180 kJ of heat from the cooled space, which is maintained at 5°C, and leaves as saturated vapor at the same pressure. Determine […]

Refrigerant-134a enters an adiabatic compressor Refrigerant-134a at 700 kPa, 70째C, and 8 kg/min is cooled by water in a condenser until it exists as a saturated liquid at the same pressure. The cooling water enters the condenser at 300 kPa and 15째C and leaves at 25째C at the same pressure. Determine the mass flow rate […]

Refrigerant-134a enters a 28-cm diameter Refrigerant-134a enters a 28-cm diameter pipe steadily at 200 kPa and 20째C with a velocity of 5 m/s. The refrigerant gains heat as it flows and leaves the pipe at 180 kPa and 40째C. Determine (a) The volume flow rate of the refrigerant at the inlet, (b) The mass flow […]

Pentane gas at 25C, 150 kPa enters an insulated SSSF Pentane gas at 25?C, 150 kPa enters an insulated SSSF combustion chamber. Sufficient excess air to hold the combustion products temperature to 1800 K enters separately at 500 K, 150 kPa. Calculate the percent theoretical air required and the irreversibility of the process per kmol […]

Refrigerant-134a at 800 kPa and 25°C is thRefrigerant-134a at 800 kPa and 25째C is throttled to a temperature of 20째C. Determine the pressure and the internal energy of the refrigerant at the final state.rottled   Is this the question you were looking for? If so, place your order here to get started!

Exercise 17-1 Wilkins Inc. has two types of handbags: standard and custom. The controller has decided to use a plantwide overhead rate based on direct labor costs. The president has heard of activity-based costing and wants to see how the results would differ if this system were used. Two activity cost pools were developed: machining […]

Reconsider Prob. 5–103. Using EES Reconsider Prob. 5–103. Using EES (or other) software, investigate the effect of the moving velocity of the steel plate on the rate of heat transfer from the oil bath. Let the velocity vary from 5 to 50 m/min. Plot the rate of heat transfer against the plate velocity, and discuss […]