Monday, April 04, 2011

A bit more than a year back, I published Computer Room Evaporative Cooling where I showed an evaporative cooling design from EcoCooling. Periodically, Alan Beresford sends me designs he’s working on. This morning he sent me a design they are working on for a 7MW data center in Ireland.


I like the design for a couple of reasons: 1) It’s a simple design and efficient design, and 2) it’s a nice example of a few important industry trends. The trends exemplified by this design are: 1) air-side economization, 2) evaporative cooling, 3) hot-aisle containment, and 4) very large plenums with controlled hot-air recycling. The diagrams follow and, for the most part, speak for themselves.



I expect mechanical designs with these broad characteristics are going to be showing up increasingly frequently over the next year or so primarily because it is a cost effective and environmentally sounds approach.




James Hamilton



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Monday, April 04, 2011 2:53:33 PM (Pacific Standard Time, UTC-08:00)  #    Comments [5] - Trackback
Tuesday, April 05, 2011 12:35:20 AM (Pacific Standard Time, UTC-08:00)
the 2 arrows of hot air going out from the roof will be wasted?
Tuesday, April 05, 2011 6:29:35 AM (Pacific Standard Time, UTC-08:00)
Simone, you asked if the heat released from the facility is "wasted". What happens in all but a tiny few facilities that recover and reuse heat (e.g. considerable power is spent removing the heat from the building.

Summary: The heat is almost always released to the environment -- what is different here is that power is not wasted driving power intensive air conditioning systems. Its not a heat recovery system but its a very efficient way of cooling the servers.

Saturday, April 09, 2011 6:38:07 AM (Pacific Standard Time, UTC-08:00)
Oh but imagine if you ran that heat through a turbine!
a person
Saturday, April 09, 2011 6:49:47 AM (Pacific Standard Time, UTC-08:00)
If the heat from a datacenter was highly concentrated, you could run it through a turbine. But, its low grade heat. Essentially the air is not very hot. There isn't enough heat energy to drive a turbine. There is enough heat to drive heat pumps so reclamation is possible:

Monday, April 11, 2011 1:55:59 AM (Pacific Standard Time, UTC-08:00)
"Oh but imagine if you ran that heat through a turbine!"

I imagine the thermodynamic efficiency would be about 5%. Better be a cheap turbine.
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