Roof Pond Cooling System

Evaporation in a pond is proportional to the air water contact area.

Roof pond cooling system.

In general the pond is covered during day to prevent heating and open at night to be cooled. What is roof pond roof pond is a passive cooling technique based upon the increased heat capacity of cheap and widely available water. Comparing performance relative to other passive strategies showed that in many cases roof pond cooling systems are about equally effective in maintaining indoor thermal comfort. This review suggests that in some cases roof ponds can provide year round thermal comfort while reducing demand for.

With these elements a roof pond can contribute to thermal comfort in all seasons. Roof ponds with wet gunny bags shaded roof ponds ventilated roof ponds and roof ponds with movable insulation proved to be more effective relative to other variants of roof pond cooling systems. A more refined method involves insulating the pond during the daytime to prevent solar gain. Overall 19 roof pond cooling and 4 roof pond heating systems were identified.

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. The main aims were to gain a detailed understanding of different roof pond configurations and their performance compare effectiveness of. H2o sun 3. This cools the roof which acts as a heat sink and absorbs heat from the interior of the building.

This paper systematically reviews literature on passive heating and cooling of buildings using roof ponds. During the day water in the pond absorbs heat cooling the ceiling below. To demonstrate a roof pond system that uses water and sun to heat and cool without electricity. Exposure of the water pond to the night sky for cooling.

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. The principal constituents of a roof pond system are the container for the water the supporting structure and the thermal insulation with which the thermal coupling and decoupling of the water are achieved. As water evaporates from the pond heat is consumed. In the simplest form this involves placing a pond on the building roof.