Use Nature to Cool Your Home

Use Nature to Cool Your Home


For many people the solution to a hot home is to turn on their air-conditioner and wait for the colder air to cool the hot air inside the home. And whilst this will eventually work, it uses a lot of electricity and isn’t necessarily very healthy compared to other more natural alternatives.

So for those of you who are interested in reducing your energy consumption but still survive comfortably on a hot day, here are 3 ways you can naturally cool your home.

1. Exhaust Systems

Now you might be thinking that I’m referring to those whirling spheres on the tops of roofs that let hot air escape, but I’m actually talking about systems that use exhaust fans to suck the hot air out of a room, through the roof cavity and out through the eaves.

Exhaust systems typically work best when windows and or doors are opened allowing the cooler outside air to be drawn in as the hotter inside air is sucked out. This provides cooling even on those days where the outside temperatures are quite high as the flow of air naturally cools the home.

2. Thermal Buoyancy

Thermal buoyancy works on the principle of hot air rising and escaping through an opening near the top of the ceiling. It works best on two-storey homes where there is ample ceiling height for the hotter air to rise to, creating a vacuum behind it as it escapes.

Once again this system works best with windows and/or doors open through which cooler outside air is drawn in as the rising hot air leaves the room. But the entire system works even more effectively if a ‘solar chimney’ is built into the home. A solar chimney creates a cavity in which the air is heated by the sun. This cavity typically is made of glass helping to heat the air inside. This air heats quickly and then rises rapidly creating a draft that creates an air-flow through the home.

3. Venturi Effect

The Venturi Effect also works on a vacuum principle however here rather than relying on hot air rising, the system relies on breezes passing across the roof of your property.

Also known as Bernoulli’s Principle, it works by virtue of the fact that fast moving air has lower air pressure. Fast moving air captured on the roof is diverted into the home which in turn draws higher pressure air from the outside which results in air circulation within the home itself, thus cooling the home.

It is important to note however that this system only works in areas that achieve strong breezes and can be very ineffective on days that are still with little natural air movement.

This blog was developed by architect Dion Seminara from Dion Seminara Architecture All posts, sponsored and un-sponsored have been reviewed and approved by the Sustainable Community Media Editorial Team to ensure quality, relevance/usefulness and objectivity.


Topics: Building Green, Going Green, Heating & Cooling, Home Design & Plans, Indoor Air Quality, Windows

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