GENERAL THEORY OF EXERGY SAVING 1. ON THE EXERGETIC COST.

Abstract:

The fundamental problem of costing is stated as follows: Given a system whose limits have been defined, and an aggregation level specifying the subsystems which make up the system, obtain the costs of all physical flows which inter-relate its structure. Many authors have provided solutions by seeking an answer in the light of the Second Law of Thermodynamics. However, the Second Law is not enough to solve the problem because it lacks information. Our hypothesis is that the Nature has all the information necessary for calculating costs. The F-P-R propositions, described here, are a solution to the problem. To prove this, it is essential not to go outside the field of physics; and so a new thermodynamic concept, the Exergetic Cost or Exergetic Expense, which is the real amount of exergy required to produce any physical flow in a system whose limits, aggregation level and subsystem efficiencies have been defined. The exergetic cost is a natural way of connecting thermodynamics and economics.

Año de publicación:

1986

Keywords:

Fuente:

scopus