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9-69) An air-standard Stirling cycle operates with a maxi- mum pressure of 3600 kPa and a...
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...
15. An air-standard, ideal gas cycle with limited-pressure combustion is used to evaluate an idea...
15. An air-standard, ideal gas cycle with limited-pressure combustion is used to evaluate an ideal compression ignition engine. The compression ratio is 12. The maximum temperature in the cycle is 2040 °F. The minimum temperature and pressure in the cycle is 40 OF and 20 psia, respectively. The coefficient β=1.2 (β is the ratio of the volume after to the volume before the constant pressure heat input process). Calculate the heat added during combustion per lbm of air, and the...
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...
(12 points) An ideal Otto cycle operates with a compression ratio of 10. At the beginning...
(12 points) An ideal Otto cycle operates with a compression ratio of 10. At the beginning of the compression process, the air is at 101 kPa and 27°C. During the constant volume heat addition process, 790 kJ/kg of heat is transferred to the air. Accounting for variable specific heats with temperature, determine: the maximum temperature during the cycle 1266.862 °C the maximum pressure during the cycle 6239.424 kPa the specific net work output 475.495481 kJ/kg the mean effective pressure (MEP)...
A simple Ideal Brayton cycle operates with air with minimum and maximum temperatures of 27C and...
A simple Ideal Brayton cycle operates with air with minimum and maximum temperatures of 27C and 727°C. It is designed so that the. maximum cycle pressure is 2000 kPa and the minimum cycle pressure is 100 kPa. The isentropic efficiency of the turbine is 78 percent. Determine the network produced per unit mass of air each time this cycle is executed and the cycle's thermal efficiency Use constant specific heats at room temperature. The properties of air at room temperature...
4. A4.6 L spark ignition engine operates on the ideal Otto cycle with a compression ratio of 10. At the beginning of the compression process the air is at 107 kPa and 21 C. The maximum cycle temp...
4. A4.6 L spark ignition engine operates on the ideal Otto cycle with a compression ratio of 10. At the beginning of the compression process the air is at 107 kPa and 21 C. The maximum cycle temperature is 1116°C. Accounting for variable specific heats, determine: (a) the heat addition per cycle in kJ. Ans: 3.368 kJ (b) the net work per cycle in kJ. Ans: 1.907 kJ (c) the mean effective pressure in kPa. Ans: 460.6 kPa (d) the...
An ideal dual combustion cycle operates on 454 kg. of air. At the beginning of compression,...
An ideal dual combustion cycle operates on 454 kg. of air. At the beginning of compression, the air is at 96.53 kPa, 43.3-degree Celsius. Pressure ratio is equal to 1.5, cut-off ratio is 1.6, and compression ratio is 11. Using the air properties, determine (a) the percentage clearance (b) the pressure, the volume, and the temperature at each corner of the cycle, (c) Heat added, Heat rejected, and work net, (d) the thermal efficiency (e) the MEP in kPa.
A Brayton cycle operates with air with minimum and maximum temperatures of 27 ºC and 727...
A Brayton cycle operates with air with minimum and maximum temperatures of 27 ºC and 727 ºC. It is designed so that the maximum cycle pressure is 2000 kPa and the minimum cycle temperature is 100 kPa. The isentropic efficiencies of the turbine and compressor are both 90 percent. Using constant room-temperature specific heats, (a) determine the net work produced per unit mass of air each time this cycle is executed, in kJ/kg. (b) Determine the cycle's thermal efficiency. Remember...
A simple ideal Brayton cycle operates with air with minimum and maximum temperatures of 27°C and...
A simple ideal Brayton cycle operates with air with minimum and
maximum temperatures of 27°C and 727°C. It is designed so that the
maximum cycle pressure is 2000 kPa and the minimum cycle pressure
is 100 kPa. The isentropic efficiency of the turbine is 96 percent.
Determine the net work produced per unit mass of air each time this
cycle is executed and the cycle’s thermal efficiency. Use constant
specific heats at room temperature. The properties of air at room...
9 Required information A Brayton cycle with a pressure ratio of 15 operates with air entering...
9 Required information A Brayton cycle with a pressure ratio of 15 operates with air entering the compressor at 66 kPa and O°C, and the turbine at 600℃ The properties of air at room temperature are co-1.005 kJ/kg-K and k = 1.4. Oin net CompressorT Turbine Qout Calculate the net specific work produced by this cycle treating the air as an ideal gas with constant specific heats The net specific work produced by this cycle is 165kJkg.
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...
15. An air-standard, ideal gas cycle with limited-pressure combustion is used to evaluate an ideal compression ignition engine. The compression ratio is 12. The maximum temperature in the cycle is 2040 °F. The minimum temperature and pressure in the cycle is 40 OF and 20 psia, respectively. The coefficient β=1.2 (β is the ratio of the volume after to the volume before the constant pressure heat input process). Calculate the heat added during combustion per lbm of air, and the...
(12 points) An ideal Otto cycle operates with a compression ratio of 10. At the beginning of the compression process, the air is at 101 kPa and 27°C. During the constant volume heat addition process, 790 kJ/kg of heat is transferred to the air. Accounting for variable specific heats with temperature, determine: the maximum temperature during the cycle 1266.862 °C the maximum pressure during the cycle 6239.424 kPa the specific net work output 475.495481 kJ/kg the mean effective pressure (MEP)...
A simple Ideal Brayton cycle operates with air with minimum and maximum temperatures of 27C and 727°C. It is designed so that the. maximum cycle pressure is 2000 kPa and the minimum cycle pressure is 100 kPa. The isentropic efficiency of the turbine is 78 percent. Determine the network produced per unit mass of air each time this cycle is executed and the cycle's thermal efficiency Use constant specific heats at room temperature. The properties of air at room temperature...
4. A4.6 L spark ignition engine operates on the ideal Otto cycle with a compression ratio of 10. At the beginning of the compression process the air is at 107 kPa and 21 C. The maximum cycle temperature is 1116°C. Accounting for variable specific heats, determine: (a) the heat addition per cycle in kJ. Ans: 3.368 kJ (b) the net work per cycle in kJ. Ans: 1.907 kJ (c) the mean effective pressure in kPa. Ans: 460.6 kPa (d) the...
An ideal dual combustion cycle operates on 454 kg. of air. At the beginning of compression, the air is at 96.53 kPa, 43.3-degree Celsius. Pressure ratio is equal to 1.5, cut-off ratio is 1.6, and compression ratio is 11. Using the air properties, determine (a) the percentage clearance (b) the pressure, the volume, and the temperature at each corner of the cycle, (c) Heat added, Heat rejected, and work net, (d) the thermal efficiency (e) the MEP in kPa.
A simple ideal Brayton cycle operates with air with minimum and
maximum temperatures of 27°C and 727°C. It is designed so that the
maximum cycle pressure is 2000 kPa and the minimum cycle pressure
is 100 kPa. The isentropic efficiency of the turbine is 96 percent.
Determine the net work produced per unit mass of air each time this
cycle is executed and the cycle’s thermal efficiency. Use constant
specific heats at room temperature. The properties of air at room...
9 Required information A Brayton cycle with a pressure ratio of 15 operates with air entering the compressor at 66 kPa and O°C, and the turbine at 600℃ The properties of air at room temperature are co-1.005 kJ/kg-K and k = 1.4. Oin net CompressorT Turbine Qout Calculate the net specific work produced by this cycle treating the air as an ideal gas with constant specific heats The net specific work produced by this cycle is 165kJkg.
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