Additivity of chemical energies of alkanes

被引：9

作者：

Kabo, GJ ^{[1
]}

Govin, OV ^{[1
]}

Kozyro, AA ^{[1
]}

机构：

[1] Belarusian State Univ, Phys & Chem Problems Res Inst, Minsk 220080, BELARUS

来源：

ENERGY | 1998年 / 23卷 / 05期

关键词：

D O I：

10.1016/S0360-5442(97)00109-6

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

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 1500 K and 150 to 370 K, respectively. (C) 1998 Elsevier Science Ltd. All rights reserved.

引用

页码：383 / 391

页数：9

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