Consider the insulated piston-cylinder device shown in the figure below. The cylinder has a piston restrained by a spring and initially contains 0.8 m³ of air at 100 kPa and 25°C. Now, the air in the device is heated for 1 hour by a resistance heater placed inside the cylinder, causing the piston to rise. If the pressure varies linearly with volume until a final pressure of 300 kPa and a final volume of 1.2 m³ is reached, (a) determine the final temperature, (b) determine the power of the electrical resistance and (c) show the process path of air on P-v and T-v diagrams. Assume that the specific heats vary with temperature. Air ww

Consider the insulated piston-cylinder device shown in the figure below. The cylinder has a piston restrained by a spring and initially contains 0.8 m³ of air at 100 kPa and 25°C. Now, the air in the device is heated for 1 hour by a resistance heater placed inside the cylinder, causing the piston to rise. If the pressure varies linearly with volume until a final pressure of 300 kPa and a final volume of 1.2 m³ is reached, (a) determine the final temperature, (b) determine the power of the electrical resistance and (c) show the process path of air on P-v and T-v diagrams. Assume that the specific heats vary with temperature. Air ww

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter3: Transient Heat Conduction

Section: Chapter Questions

Problem 3.12P

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