DIY swamp coolers for emergency use?
For those of you lucky enough not to be in California just now, we’re having record heat and also record levels of wildfires, caused by a series of mostly dry thunderstorms that came through last week (NoCal doesn’t GET thunderstomrs usually, and certainly not in August.) The air is bad and I’m trying to figure out how to keep the place cool and filter air. So far I haven’t been able to convinece myself to sleep with closed windows.
As part of my solution I started looking at swamp coolers. The ones that particularly interest me are homemade ones, like this one: https://www.ebay.com/itm/Mini-Coleman-Red-5qt-Portable-Swamp-Cooler-Air-Conditioner-4-USB-Fan-Adapter/153685876714?hash=item23c8645fea:g:W8EAAOSwsQ5e9Aec. They also come in larger sizes. I’d probably buy one rather than build it myself because I don’t really have the right tools or level of handiness to make one out of the plastic coolers, and styrofoam seems too breakable.
Since I’m mostly interested in using these when I sleep I’d probably try to fill the cooler with a few frozen 2 liter bottles and maybe some extra ice so the cool air production lasts.
I’m just wondering if anyone has used similar contraptions.
Do they work to cool a medium sized bedroom? I know they’re not like air conditioning but if they can drop the temp some that would help a lot. Do they work if the window is open?
I live in coastal Northern California with a relatively mild and relatively humid climate (although getting dryer and hotter by the year!) Do swamp coolers still cool down a room in that kind of climate if you fill them with ice?
How much ice or what configuration of ice would I have to put in and what size cooler would I be looking for to keep it going for say 6-8 hours while I sleep?
What size of fan would I need to be able to feel the air some feet away? I would ideally like a USB fan so I can rechage it from a power pack if the power goes out.