Roof Pond Passive Solar System

The roof uses water either plastic bags filled with water or an open pond as the heat sink while a system of movable insulation panels regulate the mode of heating or cooling.

Roof pond passive solar system.

Of the roof pond heating variants skytherm is the only one that has been compared with other common passive heating systems such as direct gain trombe wall and sunspace. Experimental roof pond building. A brief history of the development of the roof pond concept is presented and several existing roof pond buildings located throughout the united states are. Research on comparing roof pond systems with other passive techniques is also limited.

What is roof pond roof pond is a passive cooling technique based upon the increased heat capacity of cheap and widely available water. To demonstrate a roof pond system that uses water and sun to heat and cool without electricity. It typically is constructed of containers holding 6 to 12 in 150 to 300 mm of water on a flat roof. In general the pond is covered during day to prevent heating and open at night.

Roof pond passive cooling. An indirect gain solar passive design that provides both heating and cooling is the thermal pond approach which uses water encased in ultraviolet ray inhibiting plastic beds underlined with a dark color that are placed on a roof. The main aims were to gain a detailed understanding of different roof pond configurations. The vapors were discharged from the pond in order to improve the building s summer performance whereas the same will reduce the efficiency of the system in winters.

During daytime in the summer the water on the roof is protected from the solar radiation and ambient air temperature by movable insulation which allows it to serve as. This paper systematically reviews literature on passive heating and cooling of buildings using roof ponds. H2o sun 3. However by reviewing the sizing techniques for the other systems and by knowing the specific design of the roof pond system an approximate ratio can be calculated.

An introduction to the roof pond passive solar space heating and cooling concept is provided including basic methods of operation and system configurations adaptable to different climates. It has proved more effective than these systems. Even on cloudy days passive solar heating designs continue to collect energy from diffused sunlight.