Calculate the maximum temperature in the cycle

A volume of 1.5 m3 of air initially at 1.3 bar and 32 oC undergoes three processes in order to complete a cycle:
Process
1 to 2 Isothermal compression from state 1 through a volumetric compression ratio of 4.4 to state 2
2 to 3 Isobaric heating back to the original volume.
3 to 1 Isochoric cooling back to state1.
Assume for air Mw = 28.96 Cp = 1.005 kJ/kg.K
ALL ANSWERS MUST BE GIVEN TO 3 SIGNIFICANT FIGURES
For this cycle, determine the initial mass of air (15%);
kg
A volume of 1.5 m3 of air initially at 1.3 bar and 32 oC undergoes three processes in order to complete a cycle:
Process
1 to 2 Isothermal compression from state 1 through a volumetric compression ratio of 4.4 to state 2
2 to 3 Isobaric heating back to the original volume.
3 to 1 Isochoric cooling back to state1.
Assume for air Mw = 28.96 Cp = 1.005 kJ/kg.K
ALL ANSWERS MUST BE GIVEN TO 3 SIGNIFICANT FIGURES
For this cycle, determine the initial mass of air (15%);
kg
Find the maximum pressure in the cycle (15%)
kPa
Calculate the maximum temperature in the cycle (15%)
Degrees C
A volume of 1.5 m3 of air initially at 1.3 bar and 32 oC undergoes three processes in order to complete a cycle:
Process
1 to 2 Isothermal compression from state 1 through a volumetric compression ratio of 4.4 to state 2
2 to 3 Isobaric heating back to the original volume.
3 to 1 Isochoric cooling back to state1.
Assume for air Mw = 28.96 Cp = 1.005 kJ/kg.K
ALL ANSWERS MUST BE GIVEN TO 3 SIGNIFICANT FIGURES
For this cycle, determine the initial mass of air (15%);
kg
Find the maximum pressure in the cycle (15%)
kPa
Calculate the maximum temperature in the cycle (15%)
Degrees C
Find the work done during process 1-2 (15%):
kJ
Find the work done during process 2-3 (15%):
kJ
CalcuA volume of 1.5 m3 of air initially at 1.3 bar and 32 oC undergoes three processes in order to complete a cycle:
Process
1 to 2 Isothermal compression from state 1 through a volumetric compression ratio of 4.4 to state 2
2 to 3 Isobaric heating back to the original volume.
3 to 1 Isochoric cooling back to state1.
Assume for air Mw = 28.96 Cp = 1.005 kJ/kg.K
ALL ANSWERS MUST BE GIVEN TO 3 SIGNIFICANT FIGURES
For this cycle, determine the initial mass of air (15%);
kg
Find the maximum pressure in the cycle (15%) low-cost airline operating in South Africa is considering adding either Boeing 737-400 or Boeing 737-800 to its fleet. The following information is prepared for
the economic evaluation. Either aircraft is to be used for 5 years and sold for the estimated salvage value. Assume the double declining balance is used for tax
purposes in this country and the airline’s before-tax MARR is 6.00% per year and the effective tax rate is 35%. Select a machine on the basis of after-tax present
worth analysis.
kPa
Calculate the maximum temperature in the cycle (15%)
Degrees C
Find the work done during process 1-2 (15%):
kJ
Find the work done during process 2-3 (15%):
kJ
Calculate the net work done during the cycle (10%)
kJ
The heat rejected during the Isochoric cooling (15%)
kJ

late the net work done during the cycle (10%)
kJ
The heat rejected during the Isochoric cooling (15%)
kJ

the work done during process 1-2 (15%):
kJ
Find the work done during process 2-3 (15%):
kJ
Calculate the net work done during the cycle (10%)
kJ
The heat rejected during the Isochoric cooling (15%)
kJ

the maximum pressure in the cycle (15%)
kPa
Calculate the maximum temperature in the cycle (15%)
Degrees C
Find the work done during process 1-2 (15%):
kJ
Find the work done during process 2-3 (15%):
kJ
Calculate the net work done during the cycle (10%)
kJ
The heat rejected during the Isochoric cooling (15%)
kJ

 

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