I did a bunch of trials one summer testing a variety of methods including heat shields, exterior insulation, interior insulation, convection ventilation, forced ventilation, peltier effect active cooling.
#1 by a long shot is painting the enclosure bright white. From: Bill Prince Sent: Friday, July 13, 2018 6:37 PM To: [email protected] Subject: Re: [AFMUG] How to reliably cool a small enclosure in direct sunlight? 1. Add a thermostatically controlled ventilation fan 2. Put a heat shield up on the south side of the enclosure. This can be just a plate of aluminum, painted white on the sun side, and mounted to the enclosure with 1" standoffs We have a site like yours, and just the fan keeps the temperature below 120° F (49° C). I think if we added the heat shield we could drop it another 10° F. bp <part15sbs{at}gmail{dot}com> On 7/13/2018 4:51 PM, Sterling Jacobson wrote: I’ve got a few side of the house enclosures exposed to direct sunlight part of the day. Inside the electronics are about ready to melt. Like 90C+ CPU temps. These are about 3’ x 3’ x 12 deep or something like that, so not a lot of room. What are you guys using to keep these things decently cool? -------------------------------------------------------------------------------- -- AF mailing list [email protected] http://af.afmug.com/mailman/listinfo/af_af.afmug.com
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