BrokenFans

Ziglin (they/them)

That's a lot of power that probably won't last long.

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if you were in a room with no ventilation (ie shut and sealed windows, a door with an air seal and no air vents)

in zero gravity
OR in a room with a heat index of 90°F+ (heat index not temperature)
OR in a room that puts you in danger of hypothermia (especially if you have heart issues at the same time

it's possible that a fan might exacerbate oxygen deprivation or the affects of the extreme temperatures

If you have normal windows, a gap under the door and a vent of some kind then it simply won't.

Midnight Wolf

The unit is new, just replaced an older one, and an event a couple weeks ago showed about 3h of runtime. Fan was on a low setting, other small devices were running, but no heavy load on the ups.

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Definitely how I feel when the power goes out and I can't use my CPAP, get absolutely shit or zero sleep, I need to get a generator at some point

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get yourself one of these. bonus, you can charge your phone from it too.

Screenshot_20250112-213147_Amazon Shopping

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I have one of those for my home server, how long can a CPAP run off one of those?

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What's the power draw from your cpap? Considering a cpap is just a fan basically i assume it has a much lower power draw than a server

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depends on how new/old your unit is.

should be able to find out how many watts yours is and figure out runtime based on the watthours of the ups.

you can also use their tool:
https://www.cyberpowersystems.com/tools/runtimes/

if your cpap is 50watts that ups will run it for around 100 minutes.

there are bigger more expensive ones too though. you could probably make one that's DC that waaaay cheaper though.

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If you’re actually being serious as opposed to trolling, up to about 88 degrees a fan is capable of cooling the human body sufficiently where lowering air temperature isn’t necessary.

Assuming it’s not too humid that is

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Thanks looks like I'd probably get about 100 minutes at 80 watts of draw. Better than nothing but only a drop in the bucket during storm season around me unfortunately, if storms continue to grow in intensity I can expect at least 1-2 complete overnight outages a year

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Oh definitely, really the UPS on my server only gives the server enough time to shut down services gracefully, and notify other systems when the battery of the UPS is almost dead, and then it shuts the other PC and itself off before battery hits critical. All told that's like 30 minutes at most

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Seems like I've never been to a country with high temperature and low humidity at the same time. Which is odd, because I've travelled several countries on all continents.

Ziglin (they/them)

So I'm assuming the 1kw is just the maximum output at a time?

Midnight Wolf

It's the capacity of the batteries. Technically the max output, for a very short time