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13th December 2023, 08:11 PM #1Senior Member
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Is a mobile evaporative cooler in a tin shed a bad idea?
My existing ceiling, wall and monster floor fans just move hot summer air around with only moderate cooling effect.
A mobile evaporative cooler would be much better when I can point it where I'm working.
What I'm concerned about is whether this is going to promote rust on tools and machinery. Rust on the shed frame isn't an issue as it's fully galvanised while the cladding is coated both sides, although there's the possibility of condensation on the metal. That's probably not a major issue as usually I'd be using the cooler only while the sun is heating the shed and for maybe half an hour afterwards, but perhaps longer on unusually hot days.
Any opinions and especially practical experience welcomed.
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13th December 2023 08:11 PM # ADSGoogle Adsense Advertisement
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13th December 2023, 09:31 PM #2GOLD MEMBER
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Well if the rust you see on machines from some of the more humid areas of Queensland is anything to go by I'd have my doubts about an evap. cooler in the shed.
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14th December 2023, 06:20 AM #3GOLD MEMBER
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No experience with an evap cooler in a shed, but we had evap cooling when we lived in Canberra. It was spectacularly effective in the dry Canberra air. But within about 30 minutes any paperwork lying around would be wrinkly from the absorbed moisture. Also, be aware, evap cooling is ineffective on humid days. It would have been useless in Melbourne yesterday.
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14th December 2023, 07:54 AM #4
Never used one. From what I've heard you need to keep windows/doors open while in operation.
A work friend of mine has one in her house (Canberra). She says when the door (to the carport) is open the carport tends to be lovely and cool.
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14th December 2023, 10:16 AM #5Senior Member
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A cheap refrigerated box or split system would be best, I think. "Chilly cool" rather than "damp cool". Or keep the fans and wet your t-shirt
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14th December 2023, 11:03 AM #6Senior Member
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14th December 2023, 11:06 AM #7Senior Member
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14th December 2023, 12:06 PM #8Senior Member
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The other factor to consider with evap coolers is that the moisture they'll put in the air will affect any timber in your shed, causing expansion and movement!
I recently had a 5kW reverse-cycle split system installed in my 9x4m tin workshop, and it's very effective.
Insulating the shed would make it much more efficient, but I find it's very effective without insulation.
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14th December 2023, 05:16 PM #9Intermediate Member
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wet your t-shirt
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14th December 2023, 07:57 PM #10Senior Member
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15th December 2023, 12:32 AM #11Senior Member
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On a very hot day my shirt is dripping in the shed after an hour or so, and it's all mine. Doesn't help that much under the fans.
However, these comments have inspired me to consider starting a calendar or website or whatever entitled something like "Wet T shirt men in their sheds". Gotta be a market for it somewhere.
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15th December 2023, 07:24 AM #12
That idea might work. There seems to be a market for unusual things.
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15th December 2023, 03:08 PM #13Originally Posted by 419
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15th December 2023, 04:10 PM #14Senior Member
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Nothing significant.
Shading for first few hours of daylight, then full sun.
No lining.
Thin and largely useless foil insulation under roof.
Installing better insulation under roof is on my list of things to do. Also serious extractor fan on wall under roof peak. Both have been on my list for about ten years, so I must be getting closer to doing it.
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15th December 2023, 04:37 PM #15Senior Member
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I've taken a long time (too long) to build my workshop. But it's insulated better than the house . Don't tell my wife
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