In this work, the effect of integrating the still basin with external condenser and using nanofluids on
the performance of modified solar still is investigated experimentally under outdoors of Kafrelsheikh
City (north of Egypt) climatic conditions. It was found that using a small power consumption fan
work with photovoltaic solar panels improves the evaporation and condensation rates by avoiding the
effect of non-condensable gases and creating an amount of turbulence of the water vapor content of
the air above the saline. The higher performance of modified still is achieved for continuous running
fan of speed 1350 rpm through all the day time (53.22% higher than the productivity of the
conventional still). The higher performance of modified still is achieved for corrupted running fan of
speed 1350 rpm and with operating through all the effective fan operating period from 11 a.m. to 3
p.m. (50.24% higher than the productivity of the conventional still). The productivity of the basin
solar still can be increased by mixing Nanofluids with water inside the still. Using Nanofluids
improves the solar still water productivity by about 116% and 76% with and without operating the
vacuum fan respectively.