Cooling using the venturi effect

westaussie · Mar 27, 2010 12:25 am

We are in Perth have purchaced a block approx 8klms from the coast, a south (front) facing home will be built on the property. South facing blocks in Perth IMO rated as one of the most prefered facing such that you have a North East Alfresco/patio.

So we have designed a home with a 16m staight passage which all the bedrooms run along and at the end of the passage we have a awning window.

We will mass plant on the western side with low growing plants, and some taller plants 2m directly in front of the windows to shade the Western windows, which will convert carbon dioxide to oxygen, oxegen being a light gas will rise and cause air movement (upward) and this creating a cooling effect, and with the 3pm fremantle doctor will force the cooling air into the Western side windows, air being forced into western windows and air passing the northern awing window drawing out the air from the home and cooling down the home.

Foil sarking between the colorbond roofing and battens and batts on the ceiling.

Fingers cross we should not need any form of mechanical air-conditioning.

missed anything? ::lol::

onc_artisan · Mar 27, 2010 1:48 am

not much

dymonite69 · Mar 27, 2010 10:28 am

Sound like a good use of landscaping to help condition the house.

The plants are acting like a natural evaporative air conditioner (not so much to do with air currents from O2 production/CO2 consumption). If you also used misters this would also increase the effect.

onc_artisan · Mar 27, 2010 10:42 am

Just be mindful not to detract from 'winter' gain with deciduous plantings and all will be good.

westaussie · Mar 27, 2010 4:06 pm

Sounds like a good idear as you suggest onc_artisan, planting using "deciduous plantings" will look at these in 1.5 m - 2m front of the windows only perhaps looing at plans no more than 3m in height, then mass planting of <1m all other areas to create a cool enviroment rather than pathers or concrete, we can do this here as it would be the side of the house that would not be used.

thanks for your comments,

dymonite69, the misters would be the ideal method of watering the plant early morning 5am... IMO i believe the O2 / CO2 will have some input with what i'll be achieveing, perhaps only a small amount but it all adds up.

cheers

WA

onc_artisan · Mar 27, 2010 4:10 pm

Are you planting fruit baring trees?

westaussie · Mar 27, 2010 4:21 pm

Hi onc_artisan, we will be planting fruit trees (around 3) , either orange, lemon, or lime however this will be near the alfresco area (North East) not in the area mentioned above, the trees for the area (western side) above would need to be small in height and narrow, i would expect to plant say 3 or 4 in a row infront of the window.

Cheers,

WA

Yak_Chat · Mar 27, 2010 7:51 pm

Can you pop up a sketch of your design?

You need to be careful that the air is not just going via a wind tunnel through the house and not actually drawing air through all rooms. ie nice cool passageway but hot rooms - not good.

And also make sure the air entrance point is smaller than the exit - so the venturi works properly - and have the trees are spaced far enough away and located properly so the air coming over the roof when the doctor arrives doesn't create a downdraft that inhibits the air flowing through the house, nor block the air truing to exit the house during the hotter part of the day.

A rough sketch and compass directions would help.

westaussie · Apr 03, 2010 11:48 am

Hi Yak_chat,

tried several times to post a sketch but each posts comes up with "sorry the board attachmemt quota has been used".

I'll try again some time later.

Cheers