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Open AccessArticle

Optimization of Steam Pressure Levels in a Total Site Using a Thermoeconomic Method

Department of Energy and Environment, Science and Research Branch, Islamic Azad University, Tehran 14778, Iran
Author to whom correspondence should be addressed.
Energies 2012, 5(3), 702-717;
Received: 30 January 2012 / Revised: 3 March 2012 / Accepted: 6 March 2012 / Published: 12 March 2012
(This article belongs to the Special Issue Exergy Analysis of Energy Systems)
The present study aims to develop a thermoeconomic-based approach for optimization of steam levels in a steam production and distribution system by use of the specific exergy costing (SPECO) method for determining optimum steam levels to minimize the cost caused by exergy destruction. In the field of total site optimization, incremental cost of the utility system caused by exergy destruction has been selected as an objective function and the result is compared with the case that energy minimization has been selected as the prime objective. The steam levels are optimized considering steam demand at each level, output power generated by turbines, boiler duty, fuel and cold utility requirements as well as capital cost of equipments. The analysis showed that thermoeconomic (exergoeconomic) approach in optimization not only can change the optimum structure of steam levels but also may reduce the total cost of utility system up to 8%. View Full-Text
Keywords: thermoeconomics; exergoeconomics; total site thermoeconomics; exergoeconomics; total site
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Shamsi, S.; Omidkhah, M.R. Optimization of Steam Pressure Levels in a Total Site Using a Thermoeconomic Method. Energies 2012, 5, 702-717.

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