Water On Roof Evaporation Cooling

Solar shield sprays a fine mist of water on your roof intermittently during the hot summer days and allows that water to evaporate keeping your building from getting hot.

Water on roof evaporation cooling.

So if i sprinkle water on the roof it should get cooler. This cooling reverses the heat flow through the roof. As water evaporates from the pond heat is consumed. Cooling with liquid water running off from a sprinkler is not efficient but evaporative cooling from a small amount of water like a periodic sprinkle is very efficient.

I have this notion that i should hose water on my roof when it gets really hot outside like 100 degrees florida. Rather than absorbing heat as does insulation the evaporation of water carries heat away from the building. They are simple and appear to be effective but would not be a good choice in areas where water is in short supply. Truck cooling solar shield is an environmentally friendly solution using water even surplus process water to save money on energy costs.

This is because the water retaining bricks intercept solar radiation and dissipate part of it through evaporation convection and nocturnal radiation. An evaporative roof cooling system is designed to reduce the temperature of a roof from 165 f to about 90 f. Haven t tried it because i don t want to look like a dweeb to my neighbors. 1 gallon of water consumes 8000 btu as it evaporates.

I can almost see the heat coming out of the shingles. The water evaporates and cools the surface. At its lowest tech a roof misting system can be little more than a garden hose set to the mist setting and aimed across the roof. Find evaporative coolers at lowe s today.

This shows that in general the best cooling performance within the dormitories can be obtained through using the water retaining bricks on roof. The temperature of dry air can be dropped significantly through the phase transition of liquid water to water vapor. This effect creates an effect equivalent of r 7 roof insulation during the day. Also called an evaporative cooling system a roof misting system lowers surface temperatures by spraying an extremely small amount of water across the roof allowing the water to cool the roof as it evaporates.

Yes water on the roof will help cool it. These systems provide cooling by spraying water on the roof surface. This cools the roof which acts as a heat sink and absorbs heat from the interior of the building. Heat is now transferred out of the building through the roof.

Evaporative cooling uses the fact that water will absorb a relatively large amount of heat in order to evaporate. How roof cooling works. I know that evaporation creates cooling. One study indicates that water use is around 100 gallons per day per 1000 sqft of roof area.

An evaporative cooler is a device that cools air through the evaporation of water. A more refined method involves insulating the pond during the daytime to prevent solar gain.