I finaly found way to free air conditioning!

[nike123]

Does anyone found this article before, and what are yours opinions?

http://tinyurl.com/25ro4d

[Josip]

Hi, nike123 :)


Does anyone found this article before, and what are yours opinions?

seems you forget something...no link no photo....did you think about this...

http://gizmodo.com/assets/resources/2007/08/coolingsystem.jpg

a complete article is here

http://www.instructables.com/id/Free-Air-Conditioning/

hard to say anything;)

Best regards, Josip :)

[nike123]

You are right, silly me!
No, it is not that link, I think of this link:
http://tinyurl.com/25ro4d

[expat]

In France this idea has been around for a while, it's called a Canadian Well. I've never seen an install but apparently it works.

Here's a link (in French unfortunately) with some pictures giving an idea of the system.

http://www.ideesmaison.com/Le-puits-canadien-ou-puits.html

And here's another link to an English site proposing an air conditioning solution working on the principles of water evaporation. Looks interesting but again I've never seen an install.

http://www.ecocooling.co.uk/

[Tony]

Here it is in English:

"The Canadian wells is to disguise, before it gets into the house, some of the fresh air of renewal through pipes buried in the soil, at a depth of about 1 to 2 meters.

In winter, the soil at that depth is warmer than the outside temperature: cold air is preheated as it passed through the pipes.
With this system, the air drawn by the VMC will not be deducted directly from the outside (via the air vents windows), resulting in savings of heating.

In summer, the soil is unlike colder than the outside temperature: the "sinks" smart will use the relative freshness of the soil to temper the air entering the housing."

[Ashley]

Or you could do what I did, build a house near the top of a hill, where there is a nice breeze during the hottest day of summer, large windows to allow the fresh air in, and a half rear door to allow the hot air out.

Add to that a basement where the temperature sits around 18 deg C all year, so there is a nice 'cool area' to retire to, should the temp get too much. BTW, you can walk around the basement underground, so that helps remove any chance of water ingress through the walls of the basement.

This has worked really well for me the past 2 years anyways. Whole house was heated last winter on an 8kW wood stove, all 2500sq ft of it.

[richardb14]

a ground source heatpump has the facility of passive cooling - just thought I'd throw that one in!

so in theory you could utilise this energy and form an AC system around it, you would also have active cooling and heating from the heatpump, but the savings could be immense.

you would need to incorporate some kind of convector radiator system rather than the norm of underfloor heating (you wouldn't want to cool the floor)

[Nick B]

The work is Geothermal - geological and thermal.
2 suggestions:

1) Return the water back down the well which will work like a cooling tower - the temperatrue of the water in the well should not increase significantly.

2) Amazing that he managed to build this contraption but could not figure out that a drip tray would be the cherry on the cake.

The use of ground water to act as a heat rejection medium is commonly used - water-cooled condensing unit, but not often used as a direct sourse of cooling.

He just needs to find a hot spring and he will have the king of heat pump systems.

[PoodleHeadMikey]

36,000 BTU's per hour.

Divide by 8 lbs per gallon = 4500
Divided by 15 delta = 300
Divide by 60 minutes = 5 GPM

That would have to be one big garden and well. <g>

PHM
---------

[Refrigerologist]

36,000 BTU's per hour.

Divide by 8 lbs per gallon = 4500
Divided by 15 delta = 300
Divide by 60 minutes = 5 GPM

That would have to be one big garden and well. <G>

PHM
---------

I have worked on few ground source heat pumps locally and these are fed via a borehole pump systems. One of these was drawing water from 260feet down. Hard to believe, but then this is one large granite rock I live on. I think the pump was about 6stages but it may have been more! I know how deep it was because a fitting broke on the pump and it was pulled out of the borehole. The winching truck ran out of room on the winch and had to drive up and down the road to pull the last 80feet or so. Plenty of scope there for passive cooling methinks! Except of course for the cost of running that pump!