[Equest-users] Data Center Server Heat Load - 3.63

Ryerson, Gregory Gregory.Ryerson at savvis.net
Mon Sep 14 10:52:54 PDT 2009


My HVAC is all DX. What portion of eQuest allows me the opportunity to
add the server load as 'Process Load'?

 

My goal is to generate 2 reports - one at 72 deg server inlet temp and
one at 80 deg for comparison.

 

Thanks much, Greg

 

________________________________

From: John Aulbach [mailto:jra_sac at yahoo.com] 
Sent: Monday, September 14, 2009 8:12 AM
To: equest-users at lists.onebuilding.org; Ryerson, Gregory
Subject: Re: [Equest-users] Data Center Server Heat Load - 3.63

 

Hi Greg:

 

You reached the Nirvana of eQuest information. If my solution isn't the
best for you, some other esteemed member will give you his or hers.

 

Is your server load cooled by DX units or chilled water? If DX, you
probably want the server load only satisfied by the DX units, not the
other HVAC units in the space. eQuest (DOE-2 engine) cannot have tow
systems satisfying one load.

 

For this situation, I would divide up the room into two zones. The first
being the actual space dimensions, mius the server space. In this space,
put your DX/chilled water HVAC unit. In the 2nd space, use the server
sq.ft and add the server load as Process Load, to be satisfied by the
Server HVAC

 

If your server is cooled by chilled water, I believe it should be the
same procedure. However, the process load could be placed directly on
the Chilled Water loop as a load. No HVAC required for the server space.

 

Others may have a more elegant solution.

 

John Aulbach

--- On Mon, 9/14/09, Ryerson, Gregory <Gregory.Ryerson at savvis.net>
wrote:

	
	From: Ryerson, Gregory <Gregory.Ryerson at savvis.net>
	Subject: [Equest-users] Data Center Server Heat Load - 3.63
	To: equest-users at lists.onebuilding.org
	Date: Monday, September 14, 2009, 7:50 AM

	I'm a newbie with eQuest and can't determine how to add server
load to my bldg. The 'Heat Rejection' and 'Refrigeration' sections are
all zeroes after a simulation. Where do I add that load so that the HVAC
will see the heat load? Thanks, Greg

	 

	Greg Ryerson | Facilities Engineer

Savvis

12301 Tukwila International Blvd,  Tukwila ,  WA 98168

Office: 206.988.6545 | Mobile: 206.391.5813 | Fax: 206.835.8526

E-mail: gregory.ryerson at savvis.net

 


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