[AusNOG] Data Suburb

[Luke Smith]

2012/1/5 Tony de Francesco <tonyd at pue.com.au>

> **
>
> Thanks very much for that analogy as it precisely highlights one of the
> reasons why the “reduced efficiency at part load” argument gets so much
> traction with people, i.e. people think they understand the technology and
> find over simplified examples to justify their position.
>

I'm fairly familiar with the theory and practice of air-conditioning. I
think your provided figures are missing a lot of factors that don't scale
linearly with load- such as coolant pumping.

I understand that you can get *very* close to linearly scaling
capacity/efficiency. But so many factors work against you, and as Mark said
you end up burning a lot of effort on improving/modularising the system for
what amounts to 5% of its lifespan.

Have you got examples of any DC (not just an air-conditioner) that ran at a
better (or even the same) PUE when it was half full?
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.ausnog.net/pipermail/ausnog/attachments/20120105/981bd7b9/attachment.html>