I’d like to build an evaporative cooler for the coming summer, but I don’t want to start a fire. Will a box fan draw air through cooling pads (and possibly ducting) without overheating or worse, or should I look for any other type of fan? Squirrel-cage fan maybe?
I’d like to build an evaporative cooler for the coming summer: some kind of box with a fan attached to it that draws air through cooling pads. Examples to give you the idea are:
(can’t see the fan but I assume there’s a box fan there)
- and here
(I’d like more surface area than this for cooling and stronger fans)
Where I’m stuck is that some people have mentioned box fans can overheat if you restrict the air coming into them because they're working too hard and there's not enough air moving to cool them(?). I’d like to leave this thing running unattended, so that’s a problem.
What kind of fan could I use that’s reasonably priced (ideally) and will tolerate some “sucking”? I’ll save quite a few bucks by not using air conditioning, so I’m willing to pay around $100ish for a fan if I had to.
Is a squirrel-cage fan any better/safer for this? I’ve seen this
and have heard they might be a better option than a box fan, plus they seem to show up in HVAC related products. Or just some kind of “industrial strength” fan?
FYI if you’re into the details: the area being cooled is about 500 sq. feet, so I don’t think I need a gigantic fan.
Yes, I could just buy a portable evaporative cooler, but I’d like to design something I can mount to the interior of a window so that fresh dry air is drawn in (can’t install a traditional window unit to the exterior). I might have to just put it near the window and use some kind of ducting to pull in fresh air (let’s say it’d be 6 feet of 6 or 10 inch ducting, which would also restrict airflow).
If the fan dies after a few years that’s fine, but I’d prefer not to start a fire.