An air cycle system supplies 3kg/s of compressed, 550 Kpa air at 665 K at the...
An air cycle system supplies 3kg/s of compressed, 550 Kpa air at 665 K at the inletof a heat exchanger. In the heat exchange, 400Kj/kg of heat is added. Then the air expands through 90%efficient turbine to 100Kpa. Find the turbine outlet air temperature in degrees. Use cold-Air standard assumption.
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An air cycle system supplies 3kg/s of compressed, 550 Kpa air at
665 K at the...
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...
A combined gas turbine-vapor power plant has a net power output of 100 MW. Air enters...
A combined gas turbine-vapor power plant has a net power output of 100 MW. Air enters the compressor of the gas turbine at 100kPa, 300K, and is compressed to 1200kPa. The isentropic efficiency of the compressor is 84%. The conditions at the inlet to the turbine are 1200kPa and 1400 K. Air expands through the turbine, which has an isentropic efficiency of 88%, to a pressure of 100kPa. The air then passes through the interconnecting heat exchanger, and is finally...
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...
Consider a closed Brayton cycle heat-engine. Air is compressed from 300K, 100 kPa to 580K, 700...
Consider a closed Brayton cycle heat-engine. Air is compressed from 300K, 100 kPa to 580K, 700 kPa. The air is heated at the rate of 950 kJ/kg before it enters the turbine. The isentropic efficiency of the turbine is 86%. Determine: a) the fraction of the turbine shaft power used to drive the compressor, and b) the thermal efficiency of the engine. Sketch the prooess on a T-s diagram. Do the calculation first with variable specific heats and then repeat...
Air enters the compressor of a cold air-standard Brayton cycle at 100 kpa, 300 k, with...
Air enters the compressor of a cold air-standard Brayton cycle at 100 kpa, 300 k, with a mass flow rate of 6 kg/s. the compressor pressure ratio is 10, and the turbine inlet temperature is 1400 K. For k = 1.4, calculate a. The thermal efficiency of the cycle b. The back work ratio c. The net power developed, in kW d. Reconsider the above with an ideal regenerator.
3. Consider a dual-loop cycle utilizing air as the working fluid is shown schematically in the fi...
3. Consider a dual-loop cycle utilizing air as the working fluid is shown schematically in the figure below. Air enters the compressor at 1 bar and 4°C and is compressed to 3 bar. Part of the air exiting the compressor enters the refrigeration cycle and remaining enters the power cycle. The air supplied to the refrigeration cycle from the compressor is cooled to the 55°C at constant pressure in a heat exchanger and then expands in a turbine to 1...
Combined cycle power plants are common because of their high efficiency and scalability. They typically combine a gas turbine cycle (the Brayton Cycle) with a steam turbine cycle (the Rankine Cycle) [...
Combined cycle power plants are common because of their high efficiency and scalability. They typically combine a gas turbine cycle (the Brayton Cycle) with a steam turbine cycle (the Rankine Cycle) [1]. The goal of this project is to determine the operating efficiency and profitability of a realistic combined cycle power plant. The power plant is as follows: 1. A natural gas-fired Brayton cycle with mÛ air,Br = 1.25 kg s−1 . (a) Ambient air at 1 bar and 300...
kPa (20) 3. An ideal Stirling cycle uses air as the working fluid. The air is at 400 K and 200 kPa at the beginning...
kPa (20) 3. An ideal Stirling cycle uses air as the working fluid. The air is at 400 K and 200 kPa at the beginning of the isothermal compression process, and heat is supplied to the air from a source at 1800 K in the amount of 900 kJ/kg.Utilizing cold air-standard assumptions, determine the maximum pressure in the cycle. c,- 1.005 kJ/kg-K, k 1.4, R 0.287 kJ/kg-K tamet sam Proeess
kPa (20) 3. An ideal Stirling cycle uses air as...
Air enters the compressor of an ideal Brayton refrigeration cycle at 140 kPa, 270 K, and...
Air enters the compressor of an ideal Brayton refrigeration cycle at 140 kPa, 270 K, and is compressed to 420 kPa. At the turbine inlet, the temperature is 320 K and the volumetric flow rate is 0.4 m3/s. Determine (a) the mass flow rate, in kg/s (b) the net power input, in kW (c) the refrigerating capacity, in kW (d) the coefficient of performance Round answers to 3 significant digits.
Problem 2/2 (50%) -The gas-turbine cycle of a combined gas-steam power plant has a pressure ratio...
Problem 2/2 (50%) -The gas-turbine cycle of a combined gas-steam power plant has a pressure ratio of 12. Air enters the compressor at 310 K and the turbine at 1400 K. The combustion gases leaving the gas turbine are used to heat the steam at 12.5 MPa to 500 C in a heat exchanger. The combustion gases leave the heat exchanger at 247"C. Steam expands in a high pressure turbine to a pressure of 2.5 MPa and is reheated in...
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...
Consider a closed Brayton cycle heat-engine. Air is compressed from 300K, 100 kPa to 580K, 700 kPa. The air is heated at the rate of 950 kJ/kg before it enters the turbine. The isentropic efficiency of the turbine is 86%. Determine: a) the fraction of the turbine shaft power used to drive the compressor, and b) the thermal efficiency of the engine. Sketch the prooess on a T-s diagram. Do the calculation first with variable specific heats and then repeat...
Air enters the compressor of a cold air-standard Brayton cycle at 100 kpa, 300 k, with a mass flow rate of 6 kg/s. the compressor pressure ratio is 10, and the turbine inlet temperature is 1400 K. For k = 1.4, calculate a. The thermal efficiency of the cycle b. The back work ratio c. The net power developed, in kW d. Reconsider the above with an ideal regenerator.
3. Consider a dual-loop cycle utilizing air as the working fluid is shown schematically in the figure below. Air enters the compressor at 1 bar and 4°C and is compressed to 3 bar. Part of the air exiting the compressor enters the refrigeration cycle and remaining enters the power cycle. The air supplied to the refrigeration cycle from the compressor is cooled to the 55°C at constant pressure in a heat exchanger and then expands in a turbine to 1...
kPa (20) 3. An ideal Stirling cycle uses air as the working fluid. The air is at 400 K and 200 kPa at the beginning of the isothermal compression process, and heat is supplied to the air from a source at 1800 K in the amount of 900 kJ/kg.Utilizing cold air-standard assumptions, determine the maximum pressure in the cycle. c,- 1.005 kJ/kg-K, k 1.4, R 0.287 kJ/kg-K tamet sam Proeess
kPa (20) 3. An ideal Stirling cycle uses air as...
Problem 2/2 (50%) -The gas-turbine cycle of a combined gas-steam power plant has a pressure ratio of 12. Air enters the compressor at 310 K and the turbine at 1400 K. The combustion gases leaving the gas turbine are used to heat the steam at 12.5 MPa to 500 C in a heat exchanger. The combustion gases leave the heat exchanger at 247"C. Steam expands in a high pressure turbine to a pressure of 2.5 MPa and is reheated in...
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