Lecture 10 Examples

Lecture 10 Examples - Example 1 Calculate the enthalpy...

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Example 1: Calculate the enthalpy change as 5 kg of air is heated from 400 K to 800 K using the values tabulated in Table A-21.
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Example 2: Calculate the enthalpy change as 5 kg of air is heated from 400 K to 800 K assuming constant specific heats.
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Example 3: Air is contained in a piston-cylinder device fitted with stops. The piston initially rests on the
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Unformatted text preview: stops and a pressure of 300 kPa is required to move the piston. Initially, the air is at 100 kPa and 27 °C and occupies a volume of 0.4 m 3 . Determine the amount of heat transferred to the air, while increasing the temperature to 1200 K. Assume air has constant specific heats evaluated at 300 K....
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