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3. Air in a standard Otto cycle is at 17°C and 1 bar and has a volume 0.4 L before compression. The compressor has a compression ratio 8. The maximum allowed temperature is 1927°C. Estimate the heat...
At the beginning of the compression process of an air-standard Otto cycle, p1 = 1 bar...
At the beginning of the compression process of an air-standard Otto cycle, p1 = 1 bar and T1 = 300 K. The compression ratio is 6 and the heat addition per unit mass of air is 1300 kJ/kg. Determine: (a) the maximum temperature of the cycle, in K. (b) the net work, in kJ/kg. (c) the percent thermal efficiency of the cycle. (d) the mean effective pressure, in kPa.
1. At the beginning of the compression process of an air-standard Otto cycle, P bar, T1...
1. At the beginning of the compression process of an air-standard Otto cycle, P bar, T1 = 290 K, Vi = 400 cm. The maximum temperature in the cycle is 2200 K and the compression ratio is 8. Determine (a) the heat addition, in kJ (b) the net work, in kJ. (c) the thermal efficiency. (d) the mean effective pressure, in bar.
At the beginning of the compression process of an air-standard Otto cycle, P1 = 1.0 bar,...
At the beginning of the compression process of an air-standard Otto cycle, P1 = 1.0 bar, T1 = 290 K, V1 = 400 cm3. The maximum temperature in the cycle is 2200 K and the compression ratio is 8. Determine: a) the heat addition in kJ, b) the net work in kJ, c) the thermal efficiency, and d) the mean effective pressure, in bar.
An ideal Otto cycle has a compression ratio of 8. At the beginning of the transferred compression...
An ideal Otto cycle has a compression ratio of 8. At the beginning of the transferred compression process, air is at 95 kPa and 27-degree C, and 750 kJ/kg of heat is to air during the constant-volume heat-addition process. Considering the variation of specific heats with temperature (Table A-17), determine (a) the pressure and temperature at the end of the heat addition process, (b) the net work output, (c) the thermal efficiency, and (d) the mean effective pressure for the...
Problem (3) The compression ratio of an air-standard Otto cycle is 8. At the beginning of...
Problem (3) The compression ratio of an air-standard Otto cycle is 8. At the beginning of compression process, the air is at 100 KPa, and 17 °C. 800 kJ/kg of heat is transferred to the air during the constant volume heat addition process. Determine: (a) The highest temperature in the cycle. (b) The highest pressure in the cycle. (c) The net work. (d) The thermal efficiency of the cycle.
An ideal Otto cycle has a compression ratio of 9. At the beginning of the compression...
An ideal Otto cycle has a compression ratio of 9. At the beginning of the compression process, air is at 100 kPa and 17°C, and 900 kJ/kg of heat is transferred to air during the constant-volume heat-addition process. Taking into account the variation of specific heats with temperature, determine (a) the pressure and temperature at the end of the heat-addition process, (b) the net work output, (c) the thermal efficiency, and (d) the mean effective pressure for the cycle .
At the beginning of the compression process of an air standard Otto cycle, p1 = 1...
At the beginning of the compression process of an air standard Otto cycle, p1 = 1 bar, T1 = 300 K. The maximum temperature in the cycle is 2250 K and the compression ratio is 9.8. The engine has 4 cylinders and an engine displacement of Vd = 2.3 L. Determine per cylinder: a) the volume at state 1. b) the air mass per cycle. c) the heat addition per cycle, in kJ. d) the heat rejection per cycle, in...
At the beginning of the compression process of an air standard Otto cycle, p1 = 1...
At the beginning of the compression process of an air standard Otto cycle, p1 = 1 bar, T1 = 300 K. The maximum temperature in the cycle is 2250 K and the compression ratio is 9.8. The engine has 4 cylinders and an engine displacement of Vd = 2.7 L. Determine per cylinder: a) the volume at state 1. b) the air mass per cycle. c) the heat addition per cycle, in kJ. d) the heat rejection per cycle, in kJ. e) the net work...
Consider a modification of the air-standard Otto cycle in which the isentropic compression and expansion processes...
Consider a modification of the air-standard Otto cycle in which the isentropic compression and expansion processes are each replaced with polytropic processes having n = 1.35. The compression ratio is 10 for the modified cycle. At the beginning of compression, p1 = 1 bar and T1 = 310 K. The maximum temperature during the cycle is 2200 K. Determine: (a) the heat transfer and work in kJ per kg of air for each process in the modified cycle. (b) the...
Required information An ideal Otto cycle has a compression ratio of 8. At the beginning of...
Required information An ideal Otto cycle has a compression ratio of 8. At the beginning of the compression process, air is at 95 kPa and 27 and 720 kJ/kg of heat is transferred to air during the constant volume heat addition process. Take into account the variation of specific heats with temperature. The gas constant of air is R=0.287 kJ/kg.K. Determine the network output (You must provide an answer before moving on to the next part.) The net work output...
1. At the beginning of the compression process of an air-standard Otto cycle, P bar, T1 = 290 K, Vi = 400 cm. The maximum temperature in the cycle is 2200 K and the compression ratio is 8. Determine (a) the heat addition, in kJ (b) the net work, in kJ. (c) the thermal efficiency. (d) the mean effective pressure, in bar.
An ideal Otto cycle has a compression ratio of 8. At the beginning of the transferred compression process, air is at 95 kPa and 27-degree C, and 750 kJ/kg of heat is to air during the constant-volume heat-addition process. Considering the variation of specific heats with temperature (Table A-17), determine (a) the pressure and temperature at the end of the heat addition process, (b) the net work output, (c) the thermal efficiency, and (d) the mean effective pressure for the...
Problem (3) The compression ratio of an air-standard Otto cycle is 8. At the beginning of compression process, the air is at 100 KPa, and 17 °C. 800 kJ/kg of heat is transferred to the air during the constant volume heat addition process. Determine: (a) The highest temperature in the cycle. (b) The highest pressure in the cycle. (c) The net work. (d) The thermal efficiency of the cycle.
An ideal Otto cycle has a compression ratio of 9. At the beginning of the compression process, air is at 100 kPa and 17°C, and 900 kJ/kg of heat is transferred to air during the constant-volume heat-addition process. Taking into account the variation of specific heats with temperature, determine (a) the pressure and temperature at the end of the heat-addition process, (b) the net work output, (c) the thermal efficiency, and (d) the mean effective pressure for the cycle .
Required information An ideal Otto cycle has a compression ratio of 8. At the beginning of the compression process, air is at 95 kPa and 27 and 720 kJ/kg of heat is transferred to air during the constant volume heat addition process. Take into account the variation of specific heats with temperature. The gas constant of air is R=0.287 kJ/kg.K. Determine the network output (You must provide an answer before moving on to the next part.) The net work output...
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