Argon, which has a constant specific heat as a noble gas, has a specific heat ratio of 1.667 and an ideal gas constant of 0.2081 kJ/kg-K. Determine the values of cp and cv for argon.
Given: k = cp/cv = 1.667; R = 0.2081 kJ/kg-K
What will be an ideal response?
For an ideal gas, cp – cv = R, so cp = R + cv
Substituting: k = (R+cv) / cv = 1.667 = (0.2081 kJ/kg-K + cv)/cv
Solving: cv = 0.312 kJ/kg-K
Then, cp = R + cv = 0.520 kJ/kg-K
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