Tilted wick solar still with external flat plate reflector: Optimum inclination of still and reflector

We present a theoretical analysis of a tilted wick solar still with an external flat plate reflector. The reflector is assumed to be able to be inclined forwards or backwards according to the seasons. We theoretically predicted the daily amount of distillate of the still throughout the year, which varies with the inclination angle of both the still and reflector. We found the optimum inclination angle of the still as well as the optimum inclination angle of the reflector for each month at 30°N latitude. The daily amount of distillate of the still can be increased by adjusting the inclination of both the still and reflector for any season, thus producing an average of about 21% more than a conventional tilted wick still throughout the year.