Recent content by Salah

hi guys: i plan to make solar collector using rectangular hollow steel bar 4×8cm filled with gravel as heat storage and blow air through it and direct that air as preheated for gas combustion oven to reduce gas consumption .can i use a normal fan or it has to a blower?

thank you for information.

hi guys: what should be the colour of the collector for best cooling effect of night clear sky radiative cooling?