Performance Analysis of Combined Cycle Power Plant with Multi-Effect Distillation (MED) Desalination Process

Abstract

Abstract- Water is the most important chemical component on earth. Seawater distillation processes have a considerable promise as a technique suitable for producing large scale quantities of potable water from the seawater. It involves a broad range of technologies that yield access to marginal sources of water such as seawater, brackish ground- and surface water, and wastewater. Given the reduction in access to fresh water in recent decades and the uncertainty in availability effected by climate change, desalination is critical for ensuring the future of humanity. Multieffect distillation employs the same principles of multi-stage flash distillation but contrary to it, it occurs in a series of vessels (effects) and uses the principles of evaporation and condensation at reduced ambient pressure. A dual-purpose desalination plant is a process that produces both power and desalted water with the optimum use of thermal energy in producing the two products. It offers a considerable saving in energy usage. The present paper focuses on the modelling and thermodynamic analysis of the "Multi-Effect Distillation" (MED) desalination installed in combined cycle power plant. The expected performance characteristics of the designed MED desalination plant are determined.Water is the most important substance on earth. Seawater distillation processes have a considerable technique suitable for producing large scale quantities of potable water.  This process involves a wide range of technologies that yield access to different sources of water such as seawater, ground and surface water, and wastewater. Because of the reduction in access to fresh water in recent decades and the uncertainty in availability effected by climate change, desalination is the critical process that ensure the future of humanity for fresh water requirement. Multi effect distillation process employs the same principles with multi-stage flash distillation but in contrasts, it occurs in a series of vessels (effects) and uses the principles of evaporation and condensation at reduced ambient pressure. A dual-purpose desalination plant has a process that produces both power and fresh water using optimum thermal energy. It offers a considerable saving in energy usage. This paper focuses on the modelling and thermodynamic analysis of the "Multi-Effect Distillation" (MED) desalination installed in combined cycle power plant and moreover the expected performance characteristics of the designed MED desalination plant has been determined.