A Cost Approach for Optimization of a Combined Power and Thermal Desalination System through Exergy and Environmental Analysis

• DOI: 10.1021/ie401068c
• Publication Date: 2013-07-18T20:14:31Z
• Authors: I. Janghorban Esf...; J. T. Kim; C. K. Yoo
• Keywords: Capital cost; Vapor-compression refrigeration; Low-temperature thermal desalination; Exergy efficiency; Operating cost

In this Article, a systematic approach of cost analysis and optimization for combining the multieffect thermal vapor compression (METVC) desalination system with gas turbine power plant (GT) was proposed on basis thermodynamic, economic, environmental attributes. The total annual (TAC) combined system, including capital operating costs, modified to define an efficient objective function by adding exergy destruction as lost opportunity cost, emissions damage cost. A parametric conducted evaluate effects key thermodynamic parameters GT METVC systems, inlet temperature (TIT), HRSG outlet (HOT), difference between (ΔTMETVC) (MTAC). parameter achieved using genetic algorithm (GA) find optimal minimization MTAC system. addition, methodology applied optimize located in Mahshar, Iran. results indicated that systems less than five cannot be current because produce fresh water requirements. Among more four selected best which can 28 543 m3/day 127 MW power, respectively, reduce NOx emission 3.6% compared plant.