Thread: Passive House Cooling

Originally Posted by Airportwo

Using swimming pool water? My pool water is 36c at the moment!.........
Drops to 24 ish in the cool season.........

36 is still cooler than 40 and that 4 degrees with air delivery can feel quite a bit cooler.. JFYI I am responding to the idea of using the cool air byproduct for cooling the house.

Originally Posted by Norton

Originally Posted by Loy Toy

I will keep you posted also and I appreciate your advice!

Have no advice. I know naught about the thermal characteristics and the like. I do know they are cheaper than air con on energy use but air con does a better job of cooling.

especially in humid climbs these units are far more efficient in dryer climbs such as deserts where the humidity isn't high enough for the A/C to work effectively.

sorry, that was not clear DF

climbs=climates Ok

but the phrases are a bit mixed without punctuation

please repeat with more info

Originally Posted by Marmite the Dog

The ones used over here are supposed to be.

They are, UV resistant plastic is nothing new.

Originally Posted by DrAndy

wood every time

Yes and then again time after time,,shrink, swell, Crack and peel,, and damn fine termite food.

Depends on what you make them from

Old teak has few problems, and looks great

Originally Posted by DrAndy

Depends on what you make them from Old teak has few problems, and looks great

All depends on what ya like and want Doc.
I have lived in just about every climate there, is from the Equator to above the arctic circle, in Jungle/forest and into the amargosa valley and into death valley and I find less trouble with PVC plastics than with anything else, and there is no wood that will not swell and shring a tad weather/humidity changing.

And if Old Teak is what you prefer, then that is what you should use.

You are prob right about those plastics BG, but they usually look nasty

I suppose it is a balance of function against beauty, as in many things

Originally Posted by DrAndy

You are prob right about those plastics BG, but they usually look nasty

For me, it has to look OK, but functionality is of the top order.
And we did have one window that was thermal pane double glazed and was the back door and about 2 feet square and aluminum framed and led out of the mud room to the back yard and was the door we used all the time, it would frost on the frame when it was real cold, and the room was not fully heated and only got heat thru a vent in the attic of the room to keep the water reservoir from freezing and keep the batterys warm as they were in the mud room.
But if the heat was uncomfortable, we would leave the back door into that room open and that aluminum would sweat and water would drip, so there PVC or wood was a must.
We kept a kettle on the wood fired air tite heater for room humidity to stop a dry air cough as below zero there is no humidity in the air.

well, I think we are lucky to be in Thailand

I don't like to live in cold climes

Originally Posted by DrAndy

I don't like to live in cold climes

some folks don't and some do.
That cabin was a fine house, and I did enjoy living up there, drinking water from the creek so cold it hurt your teeth, no manmade noise ever unless some one came to visit on a sled with a faulty exhaust or unless I had the single cyl battery charger running.
One mile to my nearest neighbors house, but I did see him and his kids go by on our land when they were cross country training on ski's but never saw then if we were in the house.
Moose, Deer, Black Bear, Elk, Ruff and Spruce grouse all over the place, fish in the creek along with Beavers.
But was a bit of doing to get things going again in spring and then to winterize stuff again in a couple of months and get ready for winter again.
Rode sleds from October til April for 10 miles thru the forest all winter and had a few months to have Propane and gasoline delivered, get in heating wood and get ready for 12 to a max of 25 feet of snow again.
The gal I was married to offered to buy me out when we divorced if I wanted to sell my half and if I would take payments, so as far as I know she is still there.

Originally Posted by DrivingForce

better than second hand car radiators would be second hand A/C condensers, they're larger air surface area and can pass more water through the unit but have a better density per square inch for heating/cooling transfer.. ideally if the fans still work you could use them for the same purpose as their design and just use the entire portion of that unit.

If you're referring to aircon condensers (non automotive), then your statement is in error.

Automotive radiator fins have air-side heat-transfer coefficients around 250 W/m2.K, whereas A/C fins are closer to 100 W/m2.K, depending on fin pattern. Air-side heat-transfer dominates an air-liquid heat-exchanger in the ratio 80:20.

A good radiator will perform well, if matched with the correct fan. Don't use an air face velocity of more than 2 m/s if you want to minimise fan power consumption.

Originally Posted by DrAndy

I don't like to live in cold climes

I thought you lived in London?

only in the warmer months Marmite

although it is only 15C at the moment

Originally Posted by DrAndy

only in the warmer months Marmite although it is only 15C at the moment

I keep thinking you're KW with that avatar. Can we have your old one back?

Originally Posted by DrAndy

anyway, would you like $30,000,000?

Yes please.

OK here it is; please send $450 to cover the diplomatic and food stamps

I'll send it upon receipt of the $30 zillion, as I've no spare change at the moment.