Is Roof Misters controller just a timer?
No, the amount of solar radiation impinging on the roof varies, hour by hour, throughout the day and varies day by day. Likewise, the amount of water required varies throughout the day with the morning and evening requiring less than what is needed during midday. A set time “on” and a set time “off” obviously does not allow for this, resulting in a system that will be set correctly for only two times throughout the entire day. In addition, the weather conditions are constantly changing and so does the amount of water required to maintain the roof surface temperature at its lowest point. Therefore, the problem with controlling a system in this non-responsive fashion is that the amount of water issued to the roof is either too much or too little for the majority of the time. When too much water is issued, you have runoff and water is wasted. When too little water is issued, the roofs temperature rises and the heat entering the building through the roof increases. By contrast, the Roof Mi
