[Bldg-sim] Data Center Energy Modeling / EQuest

[Shaun Martin]

Hi Michelle,
 
I've modelled many of these options for data centers in equest.
Conceptually, the simplest way to deal with it is to model the CRAC units
and servers process load as a separate zone within a larger conditioned
server room zone.  This gives you two separate systems to work with in the
server room, and you'll need an office space zone to receive the heat
recovery.  See the OA-FROM-SYSTEM keyword.   You'll need a spreadsheet to
work out schedules for the server load vs time and how much load the CRAC
units are seeing vs the server room main air supply unit.
 
Shaun
 

Shaun Martin LEED AP

Principal

Shaun Martin Consulting

Suite 200 - 420 West Hastings Street

Vancouver BC   V6B 1L1

604-789-1095

 <blocked::mailto:smartin at shaunmartinconsulting.com>
smartin at shaunmartinconsulting.com

member CAGBC, ASHRAE


  _____  

From: bldg-sim-bounces at lists.onebuilding.org
[mailto:bldg-sim-bounces at lists.onebuilding.org] On Behalf Of Contri,
Michelle
Sent: Tuesday, September 27, 2011 5:19 AM
To: bldg-sim at lists.onebuilding.org
Subject: [Bldg-sim] Data Center Energy Modeling / EQuest



I wanted to get some referrals as to what software is regularly used for
data center equipment modeling (mainly products that can model the below
cases)??

 

In addition, if anyone that is fluent in eQuest to help me distinguish what
the software can or cannot do for the following:

1.	Air-cooled chillers with integrated dry-cooler economizers?  Can the
modeling tools simulate the combined pressure drop of these coils in series
as well as the operation? 

2.	Air-to-air heat exchanger indirect airside economizers? 

3.	Can a data center IT load be varied easily? 

4.	How are combination systems modeled - IT liquid cooling in the row
or on the cabinet, along with macro HVAC systems? 

5.	How are combined DX/glycol CRAC units w/ dry coolers (waterside
economizer) modeled? 

6.	Can the tools accurately model CRAC units given different sensible
heat ratio, energy efficiency ratios, etc.? 

7.	Adiabatic dry-coolers? 

8.	Datacom heat recovery used for other use - i.e. heat recovery from
small Datacom facility used for office space heating, etc.? 

9.	All non-integrated modes of economizer operation on the above
strategies? 

10.	Effects of aisle containment systems? 

11.	Evaporative humidification? 

12.	In-row, above row, in-cabinet, rear door heat exchangers?  Rear door
heat exchangers with and w/o fans? 

13.	Natural source economizers - lake, river, aquifer, and ground
sources with integrated chiller or DX operation?

Thanks

 

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