Passive Cooling Roof Design

Because of the small heating loads of modern homes it is very important to avoid oversizing south facing.

Passive cooling roof design. The water is collected at the bottom of the roof and. Passive design utilises natural sources of heating and cooling such as the sun and cooling breezes. Passive cooling is the use of similar design principles to reduce summer cooling requirements. A well designed passive solar home first reduces heating and cooling loads through energy efficiency strategies and then meets those reduced loads in whole or part with solar energy.

Alvarado and martinez 2008 tested a simple and inexpensive passive cooling design for concrete roofs and demonstrated that the implementation of the design could result in a considerable drop in roof temperature. Windows are often left open to. Besides researchers found that a roof with a high density vegetation works as a passive cooling system in fact the energy released from the building through the roof during the summer is a 9. Skytherm house invented by.

Depending on your situation climate house style personal preferences etc it is most effective if you incorporate the principles of both passive cooling and passive heating. Passive solar design takes advantage of a building s site climate and materials to minimize energy use. It is achieved by appropriately orientating your building on its site and carefully designing the building envelope roof walls windows and floors of a home. Passive cooling is free unlike air conditioning which is expensive to install and run.

What is roof pond roof pond is a passive cooling technique based upon the increased heat capacity of cheap and widely available water. Insulation is critical to passive cooling particularly to the roof and floor. Article on passive design cooling techniques for hot humid climates with examples. To demonstrate a roof pond system that uses water and sun to heat and cool without electricity.

Some passive systems use a small amount of conventional energy to control dampers shutters night insulation and other devices that enhance solar energy collection storage and use and reduce undesirable heat transfer. H2o sun 3. Passive cooling is a building design approach that focuses on heat gain control and heat dissipation in a building in order to improve the indoor thermal comfort with low or no energy consumption. Their design is composed of an insulating layer topped by a triangular shaped reflector which casts shadows on itself and.

The water runs down the roof cooling by radiation to the night sky. This approach works either by preventing heat from entering the interior heat gain prevention or by removing heat from the building natural cooling. Passive cooling design principles. Lakeland florida side by side test.

Passive cooling should be part of an overall approach to passive design.