In this cycle, heat addition at constat volume followed by heat addition at constant pressure: a)...
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this cycle, heat addition at constat volume followed by heat
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a)...
in an ideal dual combustioncycle, the pressure , volume, and temperature at the beginning of the...
in an ideal dual combustioncycle, the pressure , volume, and temperature at the beginning of the adiabatic compression are 93kn/m2 , 0.05m3, and 24 degrees celcius respectively. The volume ratio of the adiabatic compression is 9:1 . The constant volume heat addition pressure ratio is 1.5:1 and the constant pressure heat addition volume ratio is 2:1 Determine , for this cycle; a. The pressure , volume and temperature at the cycle process change points b. The thermal efficiency of the...
Calculate without constant specific heat (Cp). An air-standard dual cycle has a compression ratio of 14...
Calculate without constant specific heat (Cp). An air-standard dual cycle has a compression ratio of 14 and cut-off ratio of 1.2. The pressure ratio during constant volume heat addition is 1.5. Determine the: (A) Thermal efficiency (B) Amount of heat added (C) Maximum gas pressure and temperature when the cycle is operated at 80kPA and 20°C at the beginning of the compression.
At the beginning of the compression process of an air standard Diesel cycle, the pressure is 109 ...
At the beginning of the compression process of an air standard
Diesel cycle, the pressure is 109 kPa and the temperature is 284 K.
The volume of state 1 is 800.0 cm3. The compression ratio for the
Diesel cycle is 12 and cut-off-ratio is 1.95. Determine: a) the
heat addition, in kJ kJ b) the net work, in kJ kJ c) the thermal
efficiency % d) the mean effective pressure, in kPa kPa
At the beginning of the compression process...
A Diesel engine is approximated by a pressure limited (dual) cycle. The data is as follows:...
A Diesel engine is approximated by a pressure limited (dual)
cycle. The data is as follows:
A Diesel engine is approximated by a pressure limited (dual) cycle. The data is as follows: Inlet temperature and pressure: P1 = 100 kPa, T1 = 298 K Compression ratio = 16:1 Heat added during combustion = 44000 kJ/kgfuel (please note that this value is per kg fuel) A/F = 23 kg/kgf 40% of the heat is added in the constant volume combustion part....
Consider the following figure Otto cycle Heating at constant volume (fuel combustion) Он 3) Adiab...
Consider the following figure Otto cycle Heating at constant volume (fuel combustion) Он 3) Adiabatic expansion power stroke ed 0 rV Adiabatic compression (compression stroke) Cooling at constant volume (cooling of exhaust gases) (a) For the Otto cycle shown in the figure above, calculate the changes in entropy of the gas in each of the constant-volume processes b 无, and Td and the number of moles n and the heat capacity Cv of the gas. (Use any variable or symbol...
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...
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...
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 .
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.
Diesel Cycle a. The pressure and temperature at each state in this cycle. b. The compression ratio. c. The cutoff ratio. d. The thermal efficiency. e. The MEP (mean effective pressure.) Consider an a...
Diesel Cycle
a. The pressure and temperature at each state in this cycle.
b. The compression ratio.
c. The cutoff ratio.
d. The thermal efficiency.
e. The MEP (mean effective pressure.)
Consider an air-standard Diesel cycle (this means use variable specific heats). The inlet state to the compression process is at 95 kPa and 300 K. At the end of the heat addition process, the temperature is 2150 K and the pressure is 7200 kPa. Accounting for the variation of...
At the beginning of the compression process of an air standard
Diesel cycle, the pressure is 109 kPa and the temperature is 284 K.
The volume of state 1 is 800.0 cm3. The compression ratio for the
Diesel cycle is 12 and cut-off-ratio is 1.95. Determine: a) the
heat addition, in kJ kJ b) the net work, in kJ kJ c) the thermal
efficiency % d) the mean effective pressure, in kPa kPa
At the beginning of the compression process...
A Diesel engine is approximated by a pressure limited (dual)
cycle. The data is as follows:
A Diesel engine is approximated by a pressure limited (dual) cycle. The data is as follows: Inlet temperature and pressure: P1 = 100 kPa, T1 = 298 K Compression ratio = 16:1 Heat added during combustion = 44000 kJ/kgfuel (please note that this value is per kg fuel) A/F = 23 kg/kgf 40% of the heat is added in the constant volume combustion part....
Consider the following figure Otto cycle Heating at constant volume (fuel combustion) Он 3) Adiabatic expansion power stroke ed 0 rV Adiabatic compression (compression stroke) Cooling at constant volume (cooling of exhaust gases) (a) For the Otto cycle shown in the figure above, calculate the changes in entropy of the gas in each of the constant-volume processes b 无, and Td and the number of moles n and the heat capacity Cv of the gas. (Use any variable or symbol...
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...
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 .
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.
Diesel Cycle
a. The pressure and temperature at each state in this cycle.
b. The compression ratio.
c. The cutoff ratio.
d. The thermal efficiency.
e. The MEP (mean effective pressure.)
Consider an air-standard Diesel cycle (this means use variable specific heats). The inlet state to the compression process is at 95 kPa and 300 K. At the end of the heat addition process, the temperature is 2150 K and the pressure is 7200 kPa. Accounting for the variation of...
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