Additivity of chemical exergies of alkanes

G.j Kabo, O.v Govin and A.a Kozyro

Energy, 1998, vol. 23, issue 5, 383-391

Abstract: A standard thermochemical model is proposed for the reference environment. Chemical exergies of liquid and gaseous alkanes were calculated over a wide temperature range using the proposed model. The exergies of alkanes may be calculated using additive methods. Two additive schemes were studied: a scheme with effective bonds and a replacement scheme. The thermal dependence of the additive constants was investigated. Each compound in the liquid state has a different temperature range for the initial thermodynamic data. This fact limits exergy calculations for a wide temperature range. A new method for calculation of the additive constants over a wide temperature range using polynomials is proposed. This method allows the calculation of chemical exergies of gaseous and liquid alkanes from 200 to 1500K and 150 to 370K, respectively.

Date: 1998
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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:23:y:1998:i:5:p:383-391

DOI: 10.1016/S0360-5442(97)00109-6

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