I put a 12v RV exhaust fan in the roof. It required a ~12x12 hole. If you don't have active, as opposed to passive, exhaust it will get really humid inside. The RV enclosure has a lid that can be cranked open or closed. The ideal fan speed produced negative pressure inside, but since the structure is already dust-proof, there was no impact from that.
Bill Wiltschko
---------- Original Message --------
Subject: [hexayurt] Re: Exhaust for swamp cooler
From: Chasomatic <[email protected]>
Date: Fri, August 17, 2012 9:46 am
To: [email protected]
Last year I took a furnace filter 16x20x1 and cut it into 4 smaller pieces. I then took 4 6x8x1 picture frames and hot glued the filter material into the frame. Finally I cut 4 holes in the top of my dome (where they fit without impacting the roof structure) and pressed the frames in the holes.This gave me great light in the day, and the passive ventilation worked great with my swamp cooler.2011 I had a 30*f drop from outside to inside temperature (105 to 75).A swamp cooler won't work if it's inside the yurt. Has to be outside.charlie
On Thursday, August 16, 2012 11:59:19 PM UTC-7, Ray S wrote:Hi everyone. This will be my 3rd year at the playa with a hexayurt and I've finally managed to build myself a swamp cooler (see Figjam's thread here: http://eplaya.burningman.com/--viewtopic.php?f=280&t=33842& ). I haven't decided if I'll have it outside of my yurt with the fan poking through a hole fit for it, or have it inside with a hole cut for the vent on the back of the cooler.. I'm figuring on trying both and see what works best.start=1500 My real question is, what should I do for exhaust? I have an HVAC furnace filter which is around 16" x 22" or something around that. I was thinking of cutting a hole for it on the opposite side of where I have my swamp cooler mounted, so I would hopefully get a cross breeze and passively exhaust out while the fan on the cooler is running. The fan I'm using on my swamp cooler is the Endless Breeze which is rated at 900CFM on high, but I'll probably be running it on low or medium which I'd imagine would be closer to 300-600CFM. Would there be enough pressure from this fan pushing air in to force air out the other side? Maybe I should go for two exhaust windows? I'm hoping someone out there has done something similar and can chime in :)
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