Unit-3: First Law of Thermodynamics: Example: Polytropic Process

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Example: Polytropic Process

Example:
Polytropic Process

Nitrogen expands in a cylinder from 690 kPa and 260^oC to 210 kPa and 40^oC. Assuming ideal gas behavior, calculate the work done on the face of the piston per kg of nitrogen. Assume

pressure and volume are related by PV^{\( \delta \)} = constant, where \( \delta \) is a suitable exponent. Also calculate Q and \( \Delta \)U of the process. (C_P of nitrogen = 1.038 kJ.kg^-1.^oC^-1)