Ecological function according to entransy dissipation applied to the optimization of shell and tube heat exchangers

Abstract

The heat exchangers of tube and shell are of the most important equipment in the industry. Its thermodynamic design is based on the global coefficient of heat transference and the total pressure drop. In 2007 a new thermodynamic property settled down denominated “Entransy”, which expresses the capacity of a body to transfer heat. The loss of that capacity is denominated “Dissipation of Entransy” . In order to evaluate the ecological impact of the thermal machines, Angle-Brown created in 1991 the call ecological function. In the present work the dissipation of entransy with the ecological function was combined and a new expression was created to evaluate the environmental impact of the heat exchangers. In addition the muti-objective optimization was realized to these equipment. The ecological function and the cost were used like functions objective. In order to realize the optimization the method of the Genetic Algorithms was used.