1 kg of air at a pressure of 14 bar occupies 0.6 $m^3$ and from this condition it expands to 1.4 bar according to law $PV^{1.25} = C$

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1 kg of air at a pressure of 14 bar occupies 0.6

$m^3$ and from this condition it expands to 1.4 bar according to law

$PV^{1.25} = C$

written 6.5 years ago by

teamques10 ★ 69k

• modified 5.6 years ago

Find: (i) Change in internal energy (ii) Work done by air Assume Cp = 1.005 KJ/kg K and Cv = 0.718 KJ/kg K

thermodynamics

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written 6.5 years ago by

teamques10 ★ 69k

• modified 6.4 years ago

Given data: Initial pressure = P1 = 14 Bar = 14 x 105 N/m2

Final pressure = P2 = 1.4 Bar = 1.4 x 105 N/m2

Initial volume = V1 = 0.6 $m^3$

Cp = 1.005 kJ/kgK,

Cv = 0.718 kJ/kgK and

Process is $PV^{1.25} = C$

Air mass m …

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