چكيده به لاتين
The cost of fresh water resources and the limitations of using fossil energy sources for water desalination have led the world to use clean energy such as renewable fuel cells such as solar energy to produce fresh water. During this research, construction of a new solar still with parabolic trough collector and technical and economic analysis of the system with the aim of maximum efficiency and lowest cost was on the agenda. In addition, all effective capacities for increasing efficiency and cost effectiveness were used for the design. These parameters include proper system direction, percentage of hybrid nanoparticles, absorber diameter of the collector, application / non-application of glass cover, solar still geometry, copper coil geometry, and presence / absence of solar still for the pre-test and solar still air pressure, the fluid flow was the solar still crossing factor as well as the solar still water depth in the experimental design section. The results showed that using a combination of nanofluids including carbon nanotube and magnesium oxide (1: 4 ratio) and mass percentage of 0.4 nanoparticles in the base fluid (thermal oil) as the operating fluid, the collector axis was deployed along the east Western, 1 inch diameter vacuum absorber tube, single slope pond geometry, spiral copper coil geometry in the presence of water layer in pretest, and operating fluid with discharge of 3 liters per minute, water depth of 2.5 The centimeter and pressure of 0.4 atm yields the best system efficiency (55%) at a cost of $ 2.21 per cubic meter of water.
