Translations:Chauffe eau solaire/14/en

The pipes of the refrigerator rack have a small diameter (0,15 inches), there is so a low volume of heat transfer fluid to heat in the panel. This low inertia allows to increase fastly the temperature as soon as there is a sunbeam between two clouds and then to heat the hot water balloon. The more the diameter of the pipes increases, the more it needs time to heat a great volume of fluid and the less the system is performant.