A Decomposition Strategy for Thermoeconomic Optimization

[+] Author and Article Information
Y. M. El-Sayed

Advanced Energy Systems, Fremont, CA 94539

J. Energy Resour. Technol 111(3), 111-120 (Sep 01, 1989) (10 pages) doi:10.1115/1.3231412 History: Received October 01, 1988; Revised May 01, 1989; Online October 22, 2009


An optimal thermal design of a considered system configuration is conveniently decided when the system is modeled as made up of one thermodynamic subsystem and of the essential number of design subsystems. The thermodynamic subsystem decides the performance of the components and the design subsystems decide their best matching geometry and costs. An optimizer directs all decisions to an extremum of a given objective function. This decomposition strategy is illustrated by investigating the optimal values of seven decision design variables for a regenerative gas turbine power cycle when a cost-objective function is minimized. The results seen from the point of view of second law analysis and costing are discussed.

Copyright © 1989 by ASME
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