The chemical exergies of common hydrocarbons CaHb can be
Chapter 13, Problem 13.8D(choose chapter or problem)
The chemical exergies of common hydrocarbons \(\mathrm{C}_{a} \mathrm{H}_{b}\) can be represented in terms of their respective lower heating value, \(\overline{\text { LHV }}\), by an expression of the form
\(\frac{\overline{\mathrm{e}}^{\mathrm{ch}}}{(\overline{\mathrm{LHV}})}=c_{1}+c_{2}(\mathrm{~b} / \mathrm{a})-c_{3} / \mathrm{a}\)
where \(c_{1}\), \(c_{2}\), and \(c_{3}\) are constants. Evaluate the constants to obtain an expression applicable to the gaseous hydrocarbons of Table A-26 (Model II).
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