If I have a simple piston-cylinder heat engine, where air is the working system and constant heat is applied, thereafter a mass is applied to the piston creating a higher pressure (reduction in volume), would this process be considered isothermal or polytropic? The walls of the cylinder are not insulted either.

If I have a simple piston-cylinder heat engine, where air is the working system and constant heat is applied, thereafter a mass is applied to the piston creating a higher pressure (reduction in volume), would this process be considered isothermal or polytropic? The walls of the cylinder are not insulted either.

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.

Chapter8: Natural Convection

Section: Chapter Questions

Problem 8.12P: 8.12 An electric room heater has been designed in the shape of a vertical cylinder 2 m tall and 30...

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8.12 An electric room heater has been designed in the shape of a vertical cylinder 2 m tall and 30 cm in diameter. For safety, the heater surface cannot exceed . If the room air is at , find the power rating of the heater in watts.
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