Thermo-economic analysis of combined power and water production in Iran by multi effect desalination method

Abstract

AbstractCurrent study reports thermo-economic evaluation of various configurations of combined electricity and potable water production systems. All of these systems use single pressure heat recovery steam generators and multi-effect seawater desalination systems coupled to single cycle gas turbine power plants. These combined power and water production plants are located in the south of Iran near salt water of the Persian Gulf. The aim of this work is to find the most appropriate combination of gas turbines with different capacities (4, 10, 25 MW) to produce 18,000 m3/d fresh water. In this regard, a complete model of the system, including thermodynamics, heat transfer, and economic models as well as pressure loss calculations are developed. In this model, steady state mass and energy conservation equations are considered for each component of every configuration as a control volume. The results from this thermo-economic analysis of whole cycle are reported as the levelized cost of electricity, desalinat...