چكيده به لاتين
Water scarcity is a key word that is heard more today than ever before. There is no smoother way to fight this crisis than desalination of available saline water. Whether for drinking, industrial and food, medical or agricultural purposes, all these sectors can successfully overcome this crisis by using desalination plants. But the most important issue we face in desalination is energy consumption. In fact, water desalination occurs either thermally, which requires a lot of heat, or uses direct solar energy, which has a relatively low efficiency. Also, water desalination is done by membrane methods and especially by reverse osmosis method, which requires high electrical power to overcome osmotic pressure and various system drops. Therefore, in this research, in order to desalinate water, a system has been considered with the least amount of energy consumption and the lowest cost to produce fresh water from sea-water. For this purpose, a system consisting of water desalination by reverse osmosis and membrane distillation methods has been studied and PV / T has been used to supply the energy used. Finally, the optimized and hybrid system proposed by the research, in the RO part has a specific energy consumption of 2.0046 kWh / m3, and PV/T system has an electrical efficiency of 13.29% and total exergy efficiency of 22.84% in a year and MD system has a mass flux of 0. 01855 kg / m2.S with thermal efficiency of 41.06%. The general system will produce 1000 cubic meters of fresh water per day with the levelized cost of 1.8335 $ / m3.
