Direct Calculation of Average and Marginal Costs From the Productive Structure of an Energy System

[+] Author and Article Information
A. Lazzaretto, A. Macor

Dipartimento di Ingegneria Meccanica, Università di Padova, Via Venezia, 1-35131 Padova, Italy

J. Energy Resour. Technol 117(3), 171-178 (Sep 01, 1995) (8 pages) doi:10.1115/1.2835337 History: Received August 01, 1994; Revised February 28, 1995; Online January 22, 2008


Most of the thermoeconomic accounting and optimization methods for energy systems are based upon a definition of the productive purpose for each component. On the basis of this definition, a productive structure of the system can be defined in which the interactions among the components are described by their fuel product. The aim of this work is to calculate marginal and average unit costs of the exergy flows starting from their definitions by a direct inspection of the productive structure. As a main result, it is noticed that the only differences between marginal and average unit cost equations are located in the capital cost terms of input-output cost balance equations of the components.

Copyright © 1995 by The American Society of Mechanical Engineers
Topics: Structures
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