Thread: Evaporative Cooling

Originally Posted by waynep

watching this with interest - after last weekend's high temps we are thinking about upgrading from our 2 fans and one useless portable evap cooler.-
but aircon is not as pc as evap cooling these days am I right ? i know our beloved govt. was asking everyone to reduce use of aircons in the big blackout a few weeks ago but they dint specifically mention evap cooling. oops is ths stealing the thread ...sorry

Evaporative cooling uses about a 10th of the electricity that refrigerated air con, if not more, and the water use is minimal, plus you can/should re-use the waste water from the evap cooler for the garden, car wash etc.,

Exactly why i'm keen on this unit since its free, my mate who lives 2 doors up has evap cooling and over the weekend their place was less than half the temp of my place - sat night inside it was 33 degree's ! I dont think i have slept more than maybe 4 hours a night for the last week because the temp hasnt dropped enough to cool the house.

Originally Posted by ladas

On average, there would be 4 - 5 days during a summer that the humidity would be too high to be effective.

On average in Melbourne there would only be 4-5 days a summer that you would need airconditioning!

Thet do make the air moist. An A/C will de-humidify the air and evap cooler will humidify the air. The water is absorbed into the air and sent down the ductwork.

Thomas

Originally Posted by Frenchie

On average in Melbourne there would only be 4-5 days a summer that you would need airconditioning!

Not this year cocker

...............but know where you are coming from

JD is right again!, cooling from an evaporative unit, is totally dependent on relative humidity. The ratio of water vapour the air, at a certain temperature, the atmosphere can hold, prior to condensing, against the amount of water vapour in the air, temperature dependent, at the time. So in a humid atmosphere, ie Darwin, Cairns, etc, during the Wet, this type of unit is useless. Might be OK in Perth, check it out on the BOM site.

Its free, just get it, what have you got to loose!
Oh and it will work great in sunny vic.

Guys, I have read that evaporative cooling may not be used in Period 4 drought water restrictions! FYI.