The high thermal energy consumption per m3 fresh water is one of the main barriers to the spread of thermallydriven desalination processes and has limited their use to applications in countries with high reserves of fossilfuels or to specific technological solutions like dual purpose cogeneration plants and solar desalination systems.Being energy conversion efficiency a major issue to improve the performance of thermally driven desalinationplants, thermoeconomic analysis has been attracting the efforts of researchers for the identification of marginsfor process improvement. In this paper a rigorous exergy and thermoeconomic analysis is presented for an 8 effectforward feed Multiple Effect Distillation plant, based on models developed in Engineering Equation Solver.The innovative contribution lies in the detailed methodological formulation with explicative notes on the mainassumptions and in the high level of disaggregation used, which allows us to follow each specific subprocessand thus to acquire an in-depth understanding of the whole cost formation process. The results indicate thatthe monetary value associated with the physical and chemical exergy flows highly vary throughout the plantand that the contribution to the final cost of fresh water is higher for the distillate produced in the last effects.
|Numero di pagine||16|
|Stato di pubblicazione||Published - 2015|
All Science Journal Classification (ASJC) codes
- Water Science and Technology
- Mechanical Engineering