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Problem 2 20) Air enters a compressor operating at steady state at 280 K and exits...
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...
Air enters a compressor at 152 kPa and 290 K and exits at a temperature of...
Air enters a compressor at 152 kPa and 290 K and exits at a temperature of 507.4 K. Determine the power (kW) for the compressor if the inlet volumetric flow rate is 0.139 m/s and the heat transfer through the shell of the compressor to the surroundings is 1.31 kW. Use the ideal gas tables (variable specific heats).
An air compressor is operating at a steady state with a mass flow rate of 1.3...
An air compressor is operating at a steady state with a mass flow rate of 1.3 kg/s. The inlet pressure and temperature are P1 171 kPa and T1 319 K, respectively. The exit pressure and temperature are P2 609 kPa and T2 428 K. respectively. Heat lost from the compressor to the surroundings per unit mass flow is 16 kJ/kg. Air can be assumed as an ideal gas. Kinetic and potential energy changes can be neglected. what is the required...
Air modeled as an ideal gas enters a turbine operating at steady state at 1040 K,...
Air modeled as an ideal gas enters a turbine operating at steady state at 1040 K, 278 kPa and exits at 120 kPa. The mass flow rate is 5.5 kg/s, and the power developed is 1200 kW. Stray heat transfer and kinetic and potential energy effects are negligible. Assuming k = 1.4, determine: (a) the temperature of the air at the turbine exit, in K. (b) the percent isentropic turbine efficiency.
Ethylene enters a reversible, isothermal, steady-flow compressor at 1 bar and 280 K, and exits at...
Ethylene enters a reversible, isothermal, steady-flow compressor at 1 bar and 280 K, and exits at 40 bar. Find the required compressor work (kJ/kmol) using the ideal gas equation of state.
A compressor is used to steadily compress Air which enters the compressor at a pressure of...
A compressor is used to steadily compress Air which enters the compressor at a pressure of 220 kPa, a temperature of 320 K, and a velocity of 8 m/s through an inlet with area of 0.13 m². The air exits the compressor at a pressure of 770 kPa, temperature is 490 K, and a of velocity is 4 m/s. The compressor consumes 430 kW of power. Assuming variable specific heats, find: A) The heat transfer during this process. B) The...
Help on a and b please 13. Air enters a compressor operating at steady state at...
Help on a and b please
13. Air enters a compressor operating at steady state at 15 lbf/in. 60°F, with a volumetric flow rate of 5000 ft/min. The compression occurs in two stages, with each stage being a polytropic process with n1.3. The air is cooled to 100°F between the stages by an intercooler operating at 40 lbf/in. Air exits the compressor at 120 lbf/in.2 Determine, in Btu/min: (a) (b) The power and heat transfer rate for each compressor stage...
thermo question 2. (20 points) Steam enters a turbine operating at steady state at 2 MPa,...
thermo question
2. (20 points) Steam enters a turbine operating at steady state at 2 MPa, 360°C with a velocity of 100 m/s. Saturated vapor exits at 0.1 MPa and a velocity of 50 m/s. The elevation of the inlet is 3 m higher than at the exit. The mass flow rate of the steam is 15 kg's, and the power developed is 7 MW. Let g -9.81 m/s Determine (a) the area at the inlet, in m, and (b)...
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...
Steam enters a counterflow heat exchanger operating at steady state at 0.07 MPa with a quality...
Steam enters a counterflow heat exchanger operating at steady state at 0.07 MPa with a quality of 0.9 and exits at the same pressure as saturated liquid. The steam mass flow rate is 1.3 kg/min. A separate stream of air with a mass flow rate of 100 kg/min enters at 30oC and exits at 60oC. The ideal gas model with cp = 1.005 kJ/kg·K can be assumed for air. Kinetic and potential energy effects are negligible. Determine the temperature of...
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...
Air enters a compressor at 152 kPa and 290 K and exits at a temperature of 507.4 K. Determine the power (kW) for the compressor if the inlet volumetric flow rate is 0.139 m/s and the heat transfer through the shell of the compressor to the surroundings is 1.31 kW. Use the ideal gas tables (variable specific heats).
An air compressor is operating at a steady state with a mass flow rate of 1.3 kg/s. The inlet pressure and temperature are P1 171 kPa and T1 319 K, respectively. The exit pressure and temperature are P2 609 kPa and T2 428 K. respectively. Heat lost from the compressor to the surroundings per unit mass flow is 16 kJ/kg. Air can be assumed as an ideal gas. Kinetic and potential energy changes can be neglected. what is the required...
A compressor is used to steadily compress Air which enters the compressor at a pressure of 220 kPa, a temperature of 320 K, and a velocity of 8 m/s through an inlet with area of 0.13 m². The air exits the compressor at a pressure of 770 kPa, temperature is 490 K, and a of velocity is 4 m/s. The compressor consumes 430 kW of power. Assuming variable specific heats, find: A) The heat transfer during this process. B) The...
Help on a and b please
13. Air enters a compressor operating at steady state at 15 lbf/in. 60°F, with a volumetric flow rate of 5000 ft/min. The compression occurs in two stages, with each stage being a polytropic process with n1.3. The air is cooled to 100°F between the stages by an intercooler operating at 40 lbf/in. Air exits the compressor at 120 lbf/in.2 Determine, in Btu/min: (a) (b) The power and heat transfer rate for each compressor stage...
thermo question
2. (20 points) Steam enters a turbine operating at steady state at 2 MPa, 360°C with a velocity of 100 m/s. Saturated vapor exits at 0.1 MPa and a velocity of 50 m/s. The elevation of the inlet is 3 m higher than at the exit. The mass flow rate of the steam is 15 kg's, and the power developed is 7 MW. Let g -9.81 m/s Determine (a) the area at the inlet, in m, and (b)...
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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