SYMBCOST. A program for symbolic computation of exergoeconomic cost parameters

Abstract:

Symbolic exergoeconomics is a methodology for calculating all exergy-cost variables of a plant as a function of: input exergy resources or output exergy products, efficiencies of the subsystems, bifurcation exergy ratios, amortization cost of the subsystems, and the exergy unit prices of the input flows. This technique can be applied in many diverse fields of energy analysis, such as simulation, optimization and cost accounting and in the analysis of perturbations and sensitivity of thermal systems. In spite of the existence of the theory, the analytical studies are restricted by the limitations of human capacity to algebraically handle dozens of variables for practical cases. What is needed is a symbolic manipulation program to obtain the formulae for the different exergoeconomic parameters of any exergy structure. This would enable the scientific and technical community to use and develop the facilities of symbolic exergoeconomics. For this purpose the symbolic exergoeconomic program package SYMBCOST was developed. SYMBCOST uses the symbolic computation program REDUCE. Its capabilities are shown by solving a simple real case: device replacement in existing installations. This technique proves to be very useful for plant retrofitting, because energy managers frequently ignore the cost dependencies particularly in very complex structures.

Año de publicación:

1990

Keywords:

Fuente:

scopus