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3. (14 points) Determine whether it is possible to compress air adiabatically from 70 kPa and...
1. (3 Points) Air (as an ideal gas) is compressed in an adiabatic compressor from an...
1. (3 Points) Air (as an ideal gas) is compressed in an adiabatic compressor from an initial state of 100 kPa and 300K to a final state of at 200 kPa and 600K. Determine the change in specific entropy of air during this compression process. 2. (3 Points) A heat engine operates between two temperature limits of 1300 K and 400 K. It receives 1.2 MJ of heat while producing 500 kJ of useful work. Determine: a. The exergy of...
P1) (50 points) - Air is compressed steadily by a 7.5-kW compressor. Air enters a compressor...
P1) (50 points) - Air is compressed steadily by a 7.5-kW compressor. Air enters a compressor at a pressure of 100 kPa, a temperature of 290 K and a velocity of 6 m/s through an inlet with an area of 0.005 m2. At the exit, the pressure is 700 kPa, the temperature 480 K and the velocity is 2 m/s. Determine: a) heat transfer that takes place between the compressor and the surrounding medium at 290 K, in kW and...
9:08 LTE HomeWork-5.pdf 1 of 2 MEEN 2374 Home work #5 Air is compressed from 120 kPa and 310 K to...
answer both 1&2 please
9:08 LTE HomeWork-5.pdf 1 of 2 MEEN 2374 Home work #5 Air is compressed from 120 kPa and 310 K to 600 kPa and 550 K. A heat loss of 20 kJ/kg occurs during the process. Determine the power required for a mass flow rate of 3.2kg's 2. Steam at 5 MPa and 500 C expands adiabatically to 75 kPa. If the exhaust steam has a vapor quality of 0.9, determine the work output of this...
Problem 6.030 SI Air is compressed adiabatically in a piston-cylinder assembly from 1 bar, 300 K...
Problem 6.030 SI Air is compressed adiabatically in a piston-cylinder assembly from 1 bar, 300 K to 9 bar, 600 K. The air can be modeled as an ideal gas and kinetic and potential energy effects are negligible. Determine the amount of entropy produced, in kJ/K per kg of air, for the compression. What is the minimum theoretical work input, in kj per kg of air, for an adiabatic compression from the given initial state to a final pressure of...
1. Saturated R134a vapor enters the uninsulated compressor of a home central air- conditioning system at...
1. Saturated R134a vapor enters the uninsulated compressor of a home central air- conditioning system at 4 °C. The flow rate of R134a through the compressor is 0.1 kg/s, and the electrical power input is 5 kW. The exit state is 65 °C with 1000 kPa. Any heat transfer from the compressor is to the ambient environment at 27 °C. a) Determine the rate of entropy production for the process in kW/K. b) If the change in enthalpy for the...
7. An industrial turbine process requires a steady 0.5 kg/s of air at 200 kPa. This air is to be the exhaust from a...
7. An industrial turbine process requires a steady 0.5 kg/s of air at 200 kPa. This air is to be the exhaust from a specially designed turbine with inlet state 400 kPa, 400 K. The heat transfer could be obtained from a source at 500 K if necessary. This process may be assumed to be reversible and the changes in kinetic and potential energy are negligible. Air is an ideal gas, with constant specific heats, using Table A.S (a) Which...
In an Otto cycle air is compressed from an initial pressure 120 kPa and temperature 370...
In an Otto cycle air is compressed from an initial pressure 120 kPa and temperature 370 T (K). The cycle has compression ratio of 10. In the constant volume heat addition process 1000 kJ/kg heat is added into the air. Considering variation on the specific heat of air with temperature, determine, (a) the pressure and temperature at the end of heat addition process (show the points on P-v diagram) (b) the network output (c) the thermal efficiency (d) the mean...
It is possible to dissolve this chain. Your material is hot. I want the solution as...
It is possible to dissolve this chain. Your material
is hot. I want the solution as soon as possible, half an hour
(Answer five questions) Note: Take: R.-8.314kJ/kg K. For air c=1.005kJ/kg K & y=1.4 Mc =12kg/kmol, Mo. -32 kg/kmol, Myz =28 kg/kmol, M.,=29 kg/kmol, MH2 =28 kg/kmol i. Q1: A- Answer false or true and discusse the followings: For an adiabatic system d. 20. ii. It is impossible to construct a device that operates in a cycle and produces...
2. (5 Points) 3-kg of air (an ideal gas) is heated in a piston-cylinder device from...
2. (5 Points) 3-kg of air (an ideal gas) is heated in a piston-cylinder device from 17°C to 117°C at a constant pressure of 100 kPa. Determine the entropy change in kJ/K, assuming: a. Constant specific heat. b. Variable specific heat.
Propane is compressed from an initial state with a pressure of 100 lbf/in2 and a quality...
Propane is compressed from an initial state with a pressure of 100 lbf/in2 and a quality of 0.40 to a final saturated liquid state with a temperature is 50°F. Is it possible for this process to occur adiabatically? Justify your answer. Air is contained in a rigid, well-insulated container of volume 3 m3. The air undergoes a process from an initial state with a pressure of 200 kPa and temperature of 300 K. During the process, the air receives 720...
1. (3 Points) Air (as an ideal gas) is compressed in an adiabatic compressor from an initial state of 100 kPa and 300K to a final state of at 200 kPa and 600K. Determine the change in specific entropy of air during this compression process. 2. (3 Points) A heat engine operates between two temperature limits of 1300 K and 400 K. It receives 1.2 MJ of heat while producing 500 kJ of useful work. Determine: a. The exergy of...
P1) (50 points) - Air is compressed steadily by a 7.5-kW compressor. Air enters a compressor at a pressure of 100 kPa, a temperature of 290 K and a velocity of 6 m/s through an inlet with an area of 0.005 m2. At the exit, the pressure is 700 kPa, the temperature 480 K and the velocity is 2 m/s. Determine: a) heat transfer that takes place between the compressor and the surrounding medium at 290 K, in kW and...
answer both 1&2 please
9:08 LTE HomeWork-5.pdf 1 of 2 MEEN 2374 Home work #5 Air is compressed from 120 kPa and 310 K to 600 kPa and 550 K. A heat loss of 20 kJ/kg occurs during the process. Determine the power required for a mass flow rate of 3.2kg's 2. Steam at 5 MPa and 500 C expands adiabatically to 75 kPa. If the exhaust steam has a vapor quality of 0.9, determine the work output of this...
Problem 6.030 SI Air is compressed adiabatically in a piston-cylinder assembly from 1 bar, 300 K to 9 bar, 600 K. The air can be modeled as an ideal gas and kinetic and potential energy effects are negligible. Determine the amount of entropy produced, in kJ/K per kg of air, for the compression. What is the minimum theoretical work input, in kj per kg of air, for an adiabatic compression from the given initial state to a final pressure of...
1. Saturated R134a vapor enters the uninsulated compressor of a home central air- conditioning system at 4 °C. The flow rate of R134a through the compressor is 0.1 kg/s, and the electrical power input is 5 kW. The exit state is 65 °C with 1000 kPa. Any heat transfer from the compressor is to the ambient environment at 27 °C. a) Determine the rate of entropy production for the process in kW/K. b) If the change in enthalpy for the...
7. An industrial turbine process requires a steady 0.5 kg/s of air at 200 kPa. This air is to be the exhaust from a specially designed turbine with inlet state 400 kPa, 400 K. The heat transfer could be obtained from a source at 500 K if necessary. This process may be assumed to be reversible and the changes in kinetic and potential energy are negligible. Air is an ideal gas, with constant specific heats, using Table A.S (a) Which...
It is possible to dissolve this chain. Your material
is hot. I want the solution as soon as possible, half an hour
(Answer five questions) Note: Take: R.-8.314kJ/kg K. For air c=1.005kJ/kg K & y=1.4 Mc =12kg/kmol, Mo. -32 kg/kmol, Myz =28 kg/kmol, M.,=29 kg/kmol, MH2 =28 kg/kmol i. Q1: A- Answer false or true and discusse the followings: For an adiabatic system d. 20. ii. It is impossible to construct a device that operates in a cycle and produces...
2. (5 Points) 3-kg of air (an ideal gas) is heated in a piston-cylinder device from 17°C to 117°C at a constant pressure of 100 kPa. Determine the entropy change in kJ/K, assuming: a. Constant specific heat. b. Variable specific heat.
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