nanog mailing list archives
Re: Slightly OT: Calculating HVAC requirements for server rooms
From: Paul Vixie <vixie () isc org>
Date: Sun, 03 May 2009 15:57:16 +0000
warning-- it's sunday. pontification alert. "Ricky Beam" <jfbeam () gmail com> writes:
On Sat, 02 May 2009 00:26:37 -0400, Wayne E. Bouchard <web () typo org> wrote:... approximationEven an approximation is hard to make. One might think the simple math of "how much power is fed into the room" would do, but it ignores numerous factors that greatly effect the answer. I can rattle off example after example, but it's unnecessary. You'll need professionals to install the hardware, so there's no point not calling them in for a consult.
"Always listen to experts. They'll tell you what can't be done and why. Then do it." --Robert Heinlein after 1993 i stopped letting HVAC people do design work for me, either at home or at work. i've had to sign several waiver letters promising not to sue an HVAC company if the system they built to my spec failed to perform. astoundingly, not everyone "in the business" knows the difference between conduction, convection, and radiation. consult, sure, but with suspicion. same thing for power, structural, security, insurance, finance, network, hardware, software, and legal people, many of whom have never questioned their own assumptions nor those of their certification boards, state and county governments, or teachers/mentors. they don't have to live with the results ... but i do ... thus my willingness to dive deep.) YMMV. -- Paul Vixie KI6YSY
Current thread:
- Slightly OT: Calculating HVAC requirements for server rooms Mike Lyon (May 01)
- Re: Slightly OT: Calculating HVAC requirements for server rooms William Warren (May 01)
- Re: Slightly OT: Calculating HVAC requirements for server rooms Ricky Beam (May 01)
- Re: Slightly OT: Calculating HVAC requirements for server rooms Seth Mattinen (May 01)
- Re: Slightly OT: Calculating HVAC requirements for server rooms Wayne E. Bouchard (May 01)
- Re: Slightly OT: Calculating HVAC requirements for server rooms Ricky Beam (May 01)
- Re: Slightly OT: Calculating HVAC requirements for server rooms Paul Vixie (May 03)
- Re: Slightly OT: Calculating HVAC requirements for server rooms Ricky Beam (May 01)
- Re: Slightly OT: Calculating HVAC requirements for server rooms William Warren (May 01)
- Re: Slightly OT: Calculating HVAC requirements for server rooms William Herrin (May 02)
- Re: Slightly OT: Calculating HVAC requirements for server rooms Jack Bates (May 02)
- Re: Slightly OT: Calculating HVAC requirements for server rooms Barton F Bruce (May 03)
- RE: Slightly OT: Calculating HVAC requirements for server rooms Frank Bulk (May 02)
- Re: Slightly OT: Calculating HVAC requirements for server rooms Joe Greco (May 02)
- <Possible follow-ups>
- Re: Re: Slightly OT: Calculating HVAC requirements for server rooms joel . mercado (May 02)
- Re: RE: Slightly OT: Calculating HVAC requirements for server rooms joel . mercado (May 02)