nanog mailing list archives
Re: "Hypothetical" Datacenter Overheating
From: Izaac <izaac () setec org>
Date: Wed, 17 Jan 2024 15:10:24 -0500
On Wed, Jan 17, 2024 at 12:07:42AM -0500, Glenn McGurrin via NANOG wrote:
Free air cooling loops maybe? (Not direct free air cooling with air exchange, the version with something much like an air handler outside with a coil and an fan running cold outside air over the coil with the water/glycol that would normally be the loop off of the chiller) the primary use of them is cost savings by using less energy to cool when it's fairly cold out, but it can also prevent low temperature issues on compressors by not running them when it's cold. I'd expect it would not require the same sort of facade changes as it could be on the roof and depending only need water/glycol lines into the space, depending on cooling tower vs air cooled and chiller location it could also potentially use the same piping (which I think is the traditional use).
You're looking for these: https://en.wikipedia.org/wiki/Thermal_wheel Basically, an aluminum honeycomb wheel. One half of its housing is an air duct "outside" while the other half is an air duct that's "inside." Cold outside air blows through the straws and cools the metal. Wheel rotates slowly. That straw is now "inside." Inside air blows through it and deposits heat onto the metal. Turn turn turn. A surprisingly effective way to lower heating/cooling costs. Basically "free," as you just need to turn it on the bearing. Do you get deposits in the comb? Yes, if you don't filter properly. Do you get condensation in the comb? Yeah. Treat it with desiccants. -- . ___ ___ . . ___ . \ / |\ |\ \ . _\_ /__ |-\ |-\ \__
Current thread:
- Re: "Hypothetical" Datacenter Overheating, (continued)
- Re: "Hypothetical" Datacenter Overheating Mike Hammett (Jan 15)
- Re: "Hypothetical" Datacenter Overheating Ray Bellis (Jan 16)
- Re: "Hypothetical" Datacenter Overheating Sean Donelan (Jan 16)
- Re: "Hypothetical" Datacenter Overheating Glenn McGurrin via NANOG (Jan 16)
- Re: "Hypothetical" Datacenter Overheating Lamar Owen (Jan 17)
- Re: "Hypothetical" Datacenter Overheating Tom Beecher (Jan 17)
- Re: "Hypothetical" Datacenter Overheating Lamar Owen (Jan 18)
- Re: "Hypothetical" Datacenter Overheating Jay R. Ashworth (Jan 20)
- Re: "Hypothetical" Datacenter Overheating Tom Beecher (Jan 21)
- Re: "Hypothetical" Datacenter Overheating Jay R. Ashworth (Jan 21)
- Re: "Hypothetical" Datacenter Overheating Glenn McGurrin via NANOG (Jan 16)
- Re: "Hypothetical" Datacenter Overheating Mike Hammett (Jan 15)
- Re: "Hypothetical" Datacenter Overheating Izaac (Jan 17)
- Re: "Hypothetical" Datacenter Overheating Glenn McGurrin via NANOG (Jan 18)