Passive Cooling Double Roof House

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.

Passive cooling double roof house.

Hello i am andy lee graham ceo of. Using heat storing materials such as concrete to absorb heat. Apr 7 2020 research on tropical cooling of homes. This may seem like a tall order but the seasonal position of the sun conveniently serves this end.

And extend the roofline to shade exterior walls and create shaded outdoor living spaces. Incorporate a double roof structure separated by an air cavity. Insulation thermal mass cross flow ventilation passive cooling. Windows are often left open to take advantage of natural cooling and walls are easily shaded.

There may be several causal factors in this. Use cross ventilation or ridge vents to ventilate the air cavity between the roofs. Because of the small heating loads of modern homes it is very important to avoid oversizing south facing. Using shade and insulation to keep heat out of your home in summer.

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. 2 this house has no intake to the north plenum above grade. The upper roof is thermally well insulated so that it functions as shading. Insulation is critical to passive cooling particularly to the roof and floor.

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. 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.

Passive cooling is free unlike air conditioning which is expensive to install and run. 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. Using breeze and air movement inside your home to keep you cool. Passive solar design takes advantage of a building s site climate and materials to minimize energy use.