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13. Air enters a compressor operating at steady state at...
Problem 2 20) Air enters a compressor operating at steady state at 280 K and exits...
Problem 2 20) Air enters a compressor operating at steady state at 280 K and exits at a higher pressure and a higher temperature of 1020 K. Specitic heat at constant pressure for air is a constant and equal to 1.003 kJkg K. The mass flow rate is 01 kg's. If the compressor consumes electric power 77 kW Neglect kinetic and potential energy effects and assume air is ideal gas. Find (1) The rate of heat transfer between the compressor...
Air enters a compressor operating at steady state at a pressure of 100 kPa, a temperature...
Air enters a compressor operating at steady state at a pressure of 100 kPa, a temperature of 290 K, and with a mass flow rate of 0.72 kg/s. At the exit, the pressure is 700 kPa and the temperature is 450 K. Heat transfer from the compressor to its surroundings occurs at a rate of 3 kW. Kinetic and potential energy changes can be ignored. Determine the power input to the compressor, in kW. Assume that the air is an...
Steam enters a turbine operating at steady state at 700oF and 450 lbf/in2 and leaves as...
Steam enters a turbine operating at steady state at 700oF and 450 lbf/in2 and leaves as a saturated vapor at 0.8 lbf/in2. The turbine develops 12,000 hp, and heat transfer from the turbine to the surroundings occurs at a rate of 2 x 106 Btu/h. Neglect kinetic and potential energy changes from inlet to exit. Determine the exit temperature, in oF, and the volumetric flow rate of the steam at the inlet, in ft3/s.
Problem 4.033 Air enters an uninsulated nozzle operating at steady state at 760°R with negligible velocity...
Problem 4.033 Air enters an uninsulated nozzle operating at steady state at 760°R with negligible velocity and exits the nozzle at 520°R with a velocity of 1010 ft/s. Assuming ideal gas behavior and neglecting potential energy effects, determine the heat transfer per unit mass of air flowing, in Btu/lb. Btu/lb the tolerance is +/-2%
1. Similar to Problem 8-70 Air enters a compressor at ambient conditions of 15 psia and...
1. Similar to Problem 8-70 Air enters a compressor at ambient conditions of 15 psia and 50°F with a low velocity and exits at 150 psia, 620°F, and 350 ft/s. The compressor is cooled by the ambient air at 50°F at a rate of 1500 Btu/min. The power input to the compressor is 1000 hp. Determine (a) the mass flow rate of air and (b) the portion of the power input that is used just to overcome the irreversibilities. WRITE...
Problem 12.043 SI Air enters a compressor operating at steady state at 50°C, 0.9 bar, 70%...
Problem 12.043 SI Air enters a compressor operating at steady state at 50°C, 0.9 bar, 70% relative humidity with a volumetric flow rate of 0.8 m3/s. The molst alr exits the compressor at 155°C, 1.5 bar Assuming the compressor is well insulated, determine: (a) the relative humidity at the exit, in percent (b) the magnitude of the power input, in kVW (c) the rate of entropy production, in kW/K
Air at 95°F, 1 atm, and 10% relative humidity enters an evaporative cooler operating at steady...
Air at 95°F, 1 atm, and 10% relative humidity enters an evaporative cooler operating at steady state. The volumetric flow rate of the incoming air is 895 ft3/min. Liquid water at 68°F enters the cooler and fully evaporates. Moist air exits the cooler at 70°F, 1 atm. There is no significant heat transfer between the device and its surroundings and kinetic and potential energy effects can be neglected. a)Determine the mass flow rate of the dry air in lb(dry air)/min....
Air at 95°F, 1 atm, and 10% relative humidity enters an evaporative cooler operating at steady...
Air at 95°F, 1 atm, and 10% relative humidity enters an evaporative cooler operating at steady state. The volumetric flow rate of the incoming air is 1765 ft3/min. Liquid water at 68°F enters the cooler and fully evaporates. Moist air exits the cooler at 70°F, 1 atm. There is no significant heat transfer between the device and its surroundings and kinetic and potential energy effects can be neglected. A. Determine the mass flow rate of the dry air in lbm(dry...
Moist air at 300C and 50% RH enters a dehumidifier operating at steady state with a...
Moist air at 300C and 50% RH enters a dehumidifier operating at steady state with a volumetric flowrate of 280 m3/min. the moist air passes over the refrigerating coil and water condenses. The condensate leaves at 100C. Saturated moist air leaves in a separate stream at the same temperature. There is no significant loss of energy by heat transfer to the surroundings and the pressure remains constant at 1.013 bar. What is the rate of condensation of water in kg/min?...
Problem 4.018 SI Air enters a horizontal, constant-diameter heating duct operating at steady state at 300...
Problem 4.018 SI Air enters a horizontal, constant-diameter heating duct operating at steady state at 300 K, 1 bar, with a volumetric flow rate of 0.25 m3/s, and exits at 325 K, 0.95 bar. The flow area is 0.05 m2 Assuming the ideal gas model with k-1.4 for the air, determine: (a) the mass flow rate, in kg/s, (b) the velocity at the inlet and exit, each in m/s, and (c) the rate of heat transfer to the air, in...
Problem 2 20) Air enters a compressor operating at steady state at 280 K and exits at a higher pressure and a higher temperature of 1020 K. Specitic heat at constant pressure for air is a constant and equal to 1.003 kJkg K. The mass flow rate is 01 kg's. If the compressor consumes electric power 77 kW Neglect kinetic and potential energy effects and assume air is ideal gas. Find (1) The rate of heat transfer between the compressor...
Air enters a compressor operating at steady state at a pressure of 100 kPa, a temperature of 290 K, and with a mass flow rate of 0.72 kg/s. At the exit, the pressure is 700 kPa and the temperature is 450 K. Heat transfer from the compressor to its surroundings occurs at a rate of 3 kW. Kinetic and potential energy changes can be ignored. Determine the power input to the compressor, in kW. Assume that the air is an...
Problem 12.043 SI Air enters a compressor operating at steady state at 50°C, 0.9 bar, 70% relative humidity with a volumetric flow rate of 0.8 m3/s. The molst alr exits the compressor at 155°C, 1.5 bar Assuming the compressor is well insulated, determine: (a) the relative humidity at the exit, in percent (b) the magnitude of the power input, in kVW (c) the rate of entropy production, in kW/K
Air at 95°F, 1 atm, and 10% relative humidity enters an evaporative cooler operating at steady state. The volumetric flow rate of the incoming air is 1765 ft3/min. Liquid water at 68°F enters the cooler and fully evaporates. Moist air exits the cooler at 70°F, 1 atm. There is no significant heat transfer between the device and its surroundings and kinetic and potential energy effects can be neglected. A. Determine the mass flow rate of the dry air in lbm(dry...
Problem 4.018 SI Air enters a horizontal, constant-diameter heating duct operating at steady state at 300 K, 1 bar, with a volumetric flow rate of 0.25 m3/s, and exits at 325 K, 0.95 bar. The flow area is 0.05 m2 Assuming the ideal gas model with k-1.4 for the air, determine: (a) the mass flow rate, in kg/s, (b) the velocity at the inlet and exit, each in m/s, and (c) the rate of heat transfer to the air, in...
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