C. A thermodynamic cycle in which air is the working fluid, has the following reversible non-flow processes: 1st process (1-2): The air is compressed adiabatically through a volume ratio of 6:1, the initial pressure and temperature being 103 kN/m? and 100°C respectively. 2nd process (2-3): The air is heated at constant volume until the pressure is 3,450 kN'm?. 3rd process (3-4): The air is expanded adiabatically to its original volume. 4th process (4-1): The air is cooled at constant volume to its original state. For air, R = 0.287 kJ/kgK, and y=1.4. i. Calculate the missing values of the pressure, volume and temperature for each of the state points 1,2,3,4. ii. Determine the amount of heat transferred to the air between state points 2 and 3. i. Sketch the thermodynamic cycle on a P-v diagram and T-s diagram.

C. A thermodynamic cycle in which air is the working fluid, has the following reversible non-flow processes: 1st process (1-2): The air is compressed adiabatically through a volume ratio of 6:1, the initial pressure and temperature being 103 kN/m? and 100°C respectively. 2nd process (2-3): The air is heated at constant volume until the pressure is 3,450 kN'm?. 3rd process (3-4): The air is expanded adiabatically to its original volume. 4th process (4-1): The air is cooled at constant volume to its original state. For air, R = 0.287 kJ/kgK, and y=1.4. i. Calculate the missing values of the pressure, volume and temperature for each of the state points 1,2,3,4. ii. Determine the amount of heat transferred to the air between state points 2 and 3. i. Sketch the thermodynamic cycle on a P-v diagram and T-s diagram.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

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Section: Chapter Questions

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Concept explainers

Work and Heat Transfer

It is generally related to thermal engineering which tells about the use, creation, conversion and transfer of heat energy between the systems. It is also considered that to transfer heat from one source to another, transfer of masses is also required. There are various mechanisms by which, transfer of heat takes place i.e. thermal conduction, convection, radiation or by change of phase. All these mechanisms have their own specific features which sometimes occur simultaneously within the same system.

Question

c. A thermodynamic cycle in which air is the working fluid, has the following reversible
non-flow processes:
1st process (1-2):
The air is compressed adiabatically through a volume ratio of 6:1, the initial pressure
and temperature being 103 kN/m? and 100°C respectively.
2nd process (2-3):
The air is heated at constant volume until the pressure is 3,450 kN/m?.
3rd process (3-4):
The air is expanded adiabatically to its original volume.
4th process (4-1):
The air is cooled at constant volume to its original state.
For air, R = 0.287 kJ/kgK, and y=1.4.
i. Calculate the missing values of the pressure, volume and temperature for
each of the state points 1,2,3,4.
ii. Determine the amount of heat transferred to the air between state points 2
and 3.
ii. Sketch the thermodynamic cycle on a P-v diagram and T-s diagram.

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