[Equest-users] CW Pump power issue

Gastón Michaud F. gaston.michaud at cts-cr.com
Thu Aug 7 17:15:38 PDT 2014

Hello everyone,
I am modeling a system 8 for a LEED baseline and I'm having an interesting issue over here.  The system is a VAV with PFP boxes, with one system per floor and a central chiller plant.
Now, the LEED reviewers are saying that the IT rooms should be modeled with a system 4 which sounds reasonable since the chiller should not be working on unoccupied hours just for this small room.  When I make the change in eQuest, by setting an independent system for this zone, the total pump and cooling energy consumption drops significantly, which doesn't make any sense if the room is just about 1 ton in a 3000 ton system.
Has anyone had a similar issue?
Thank you!

  Ing. Gastón Michaud F.
  Tel.: (506) 2222-7529
  Fax: (506) 2256-5608
  From USA: 1-305-433-3668
  Calle 30, Avenida 0 y 2. San José, Costa Rica

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