Evaluating Exergy
A vessel contains carbon dioxide. Using the ideal gas model
(a) determine the specific exergy of the gas, in Btu/lb, at p = 90 lbf/in.2 and T = 200°F.
(b) plot the specific exergy of the gas, in Btu/lb, versus pressure ranging from 15 to 90 lbf/in.2, for T = 80°F.
(c) plot the specific exergy of the gas, in Btu/lb, versus temperature ranging from 80 to 200°F, for p = 15 lbf/in.2
The gas is at rest and zero elevation relative to an exergy reference environment for which T0 = 80°F, p0 = 15 lbf/in.2
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