Methodology for calculating exergy in chemical process

Abstract:

This paper presents a methodology for calculating exergy in chemical processes. Its advantages, both in generality and ease of application, versus other procedures used until now are pointed out. To define the calculation methodology presented here we start from the fact that the chosen reference environment (RE) must satisfy the condition of internal equilibrium. It implies that the dead state of all the systems with the same atomic composition is identical. The RE model proposed by Gaggioli is used. The temperature and pressure of the real physical environment are included as variables in the definition of the RE. Equations are derived to determine the chemical potential for the elements at the dead state as a function of these variables. As an example of the ease of applying the proposed method, procedures are given for calculating the exergy of the different types of substances found in a thermal power plant.

Año de publicación:

1988

Keywords:

Fuente:

scopus