Size matters when keeping components cool in our enclosures...many are in direct sunlight...we use extreme weather devices plus heating and cooling solutions.
On Tue, Jun 27, 2023, 12:10 PM Chuck McCown via AF <[email protected]> wrote: > Fans convert pretty much 100% to heat energy. > > https://www.aps.org/publications/apsnews/201506/physicshistory.cfm > > > > Yeah it's pretty much always an unmanned environment. No women either. > > When you're cooling a house, the surface area facing the outside and the > number of door & window penetrations is a big deal, but POP sites are > usually in a space the size of a walk-in closet with one door. So I'm > pretty sure that the heat generated in the room is what I need to worry > about, but I'm not sure how well a resistance heater translates to > electronics. I'm also fuzzy on power consumed by fans. Kinetic energy and > heat are really the same thing, right? Right? > > Maybe when I'm rich, bored, and retired I'll put servers inside of a water > jacket and measure their actual heat output. > > -Adam > > > > -----Original Message----- > From: AF <[email protected]> On Behalf Of D. Bernardi > Sent: Monday, June 26, 2023 5:03 PM > To: AnimalFarm Microwave Users Group <[email protected]> > Subject: Re: [AFMUG] Heat estimate > > > > Not directly related but when I researched cooling for a new datacenter the > key was efficient airflow (or even hot isle/cold isle), and setting the > thermost higher not lower. Although that saves engery and $$$ you have a > much shorter time to recover from a cooling failure as system temperature > will raise rapidly with little margin. > > There's an interesting study where Intel ran tests for nearly a year with > servers in an air cooler environment in New Mexico with outside > temperatures > approaching 100F. I'll see if I can find it. > > From there, finding the right size cooling requirements is still a > challenge (easy to over do it) but it helped. Cooling for resistive heat > is > different than for human comfort so if it is an unmanned environment, > there's that to consider as well. > > > > At 02:50 PM 6/26/2023, you wrote: > >Content-Type: multipart/alternative; > > boundary="----=_NextPart_000_0262_01D9A83D.942822B0" > >Content-Language: en-us > > > >I've been assuming that whatever energy you put into an electronic > >system is coming out as heat -there might be multiple conversions > >before it becomes heat, but it must become heat eventually. > > > >A resistive heater is said to convert 1 Watt to > >3.41 BTU/hr. So that's the conversion I'm using. > > > >I'm largely ignoring other factors because I'm assuming the > >overwhelming majority of heat in the room is the heat from my > >equipment, and the goal is to pump that heat outside. > > > > > > > >I don't think I've undersized an air conditioner > >yet using that methodology, but is it overkill? > >-- > >AF mailing list > >[email protected] > >http://af.afmug.com/mailman/listinfo/af_af.afmug.com > > > -- > AF mailing list > [email protected] > http://af.afmug.com/mailman/listinfo/af_af.afmug.com > > > -- > AF mailing list > [email protected] > http://af.afmug.com/mailman/listinfo/af_af.afmug.com > > > -- > AF mailing list > [email protected] > http://af.afmug.com/mailman/listinfo/af_af.afmug.com >
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