Passive Cooling Double Roof House

This may seem like a tall order but the seasonal position of the sun conveniently serves this end.

Passive cooling double roof house.

Hello i am andy lee graham ceo of. Passive solar design takes advantage of a building s site climate and materials to minimize energy use. Using heat storing materials such as concrete to absorb heat. The lower roof namely the ceiling is composed of glass fiber cloth of 1mm and zinc board of 0 5mm so that it functions as a radiant cooling panel.

Passive cooling is free unlike air conditioning which is expensive to install and run. 2 this house has no intake to the north plenum above grade. Because of the small heating loads of modern homes it is very important to avoid oversizing south facing. Use cross ventilation or ridge vents to ventilate the air cavity between the roofs.

And extend the roofline to shade exterior walls and create shaded outdoor living spaces. Insulation is critical to passive cooling particularly to the roof and floor. Reflective and radiative processes are the methods used to decrease heat gain by facilitating the elimination of excess heat in a building s interior to maintain a comfortable environment. 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.

Passive cooling works by. Passive heating and cooling in homes is simply a matter of determining where the sun exposure is and trying to capture and keep as much of that heat as you can in the winter while keeping it out in the summer. Windows are often left open to take advantage of natural cooling and walls are easily shaded. Insulation thermal mass cross flow ventilation passive cooling.

Summary this paper describes passive cooling effect of double roofing system with rainwater spraying. Apr 7 2020 research on tropical cooling of homes. Roofs however are difficult to shade and floors are a source of constant heat gain through conduction and convection with only limited cooling contribution to offset it. This is a fascinating house in leyte philippines that is passively cooled using a number of unique methods including a double roof a strategy for shading south and north walls in low latitudes using the roof and double walls on the east and west for shading.

There may be several causal factors in this. The upper roof is thermally well insulated so that it functions as shading. Incorporate a double roof structure separated by an air cavity. 1 it has been noted by givoni 1981 that double roof construction has limited cooling effect due to radiant transfer of heat from insolation on the roof to the inner shell.