Long-Term Performances and Technoeconomic and Environmental Assessment of Al2O3/Water and MWCNT/Oil Nanofluids in Three Solar Collector Technologies

Bringing together nanofluids and solar collectors has been widely discussed without any major advance or long-term study being carried out. In this context, paper provides a useful feasibility to help future decisions in using Solar Water Heating Systems (SWHSs) different locations. The performances of SWHSs the nanofluid-based flat plate collector (FPSC), evacuated tube (ETC), compound parabolic (CPC) under Mediterranean, arctic, desert climate conditions are presented discussed. analysis is out transient-based numerical approach, solving energy balance equations for systems. Various performance factors such as saving, fractions, environmental impacts auxiliary supplies evaluated feasibly assess use devices. Simulation results demonstrate that increases heater which reduces considerably payback period ( P P ) investment heating systems up 3.34 years Tunisian climate. Under Quebec’s region, annualized return ETC system from 4874.65 US$ 9785.93 by adding 0.06 v% Al2O3 water. Also, with electric heaters harmful CO2 emissions 0.49 tons/year.