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a) Draw the process on the PV diagram and explain the changes of pressure and volume durin the process. b) Determine the mass of the air that enters the cylinder, c) Determine the amount of work done,

a) Draw the process on the PV diagram and explain the changes of pressure and volume durin the process. b) Determine the mass of the air that enters the cylinder, c) Determine the amount of work done,

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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A pneumatic (air charged) lifting device is shown in the figure, which consists of a piston-cylinder that is connected to a high-pressure air line through a valve. In a process, the valve is opened slowly, lifting a mass. The initial volume of the piston-cylinder system after the mass is set on the piston is 0.25 m³, and contained air at 300 kPa and 17°C. The piston can be lifted up to a set of stops, at which point the volume is 1 m³. The air line is at 600 kPa and 500 K. The final pressure and temperature inside the cylinder reach 400 kPa and 350 K, respectively. Assume constant air properties at room temperature (cy=0.718 kJ/kgK, cp=1.005 kJ/kgK, R=0.287 kJ/kgK). a) Draw the process on the PV diagram and explain the changes of pressure and volume during the process. b) Determine the mass of the air that enters the cylinder, c) Determine the amount,of work done,
Transcribed Image Text:A pneumatic (air charged) lifting device is shown in the figure, which consists of a piston-cylinder that is connected to a high-pressure air line through a valve. In a process, the valve is opened slowly, lifting a mass. The initial volume of the piston-cylinder system after the mass is set on the piston is 0.25 m³, and contained air at 300 kPa and 17°C. The piston can be lifted up to a set of stops, at which point the volume is 1 m³. The air line is at 600 kPa and 500 K. The final pressure and temperature inside the cylinder reach 400 kPa and 350 K, respectively. Assume constant air properties at room temperature (cy=0.718 kJ/kgK, cp=1.005 kJ/kgK, R=0.287 kJ/kgK). a) Draw the process on the PV diagram and explain the changes of pressure and volume during the process. b) Determine the mass of the air that enters the cylinder, c) Determine the amount,of work done,
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