[BLDG-SIM] Simulation of Demand Controlled Ventilation

[Varkie Thomas]

In order to vary the outdoor air with occupany (with CO2 sensors in the return air that controls the OA dampers), I repeated the occupancy schedule in the MIN-AIR-SCH also.  The energy use went up compared to the same input (which also specified airside economizer) that did not have MIN-AIR-SCH.  I assume the schedule was applied during the intermediate season also when it should be using 100% OA.  In this situation the OA must vary independently of the supply air which would be based on the cooling load in a VAV system
 
Varkie.
 

-----Original Message-----
From: Aulbach, John [mailto:JAulbach at semprasolutions.com]
Sent: Thursday, March 20, 2003 12:16 PM
To: Varkie Thomas; BLDG-SIM at gard.com
Subject: RE: [BLDG-SIM] Simulation of Demand Controlled Ventilation


What does -999 do in the Min-Air-Sch? Doesn't that "vote" on what OSA is needed, and also yield to the economizer as well?

-----Original Message-----
From: Varkie Thomas [mailto:Varkie.Thomas at som.com]
Sent: Thursday, March 20, 2003 9:59 AM
To: BLDG-SIM at gard.com
Subject: [BLDG-SIM] Simulation of Demand Controlled Ventilation


We tried scheduling the outdoor air fraction in the Systems component of the DOE2.1E program by using the occupancy schedule in the Loads component.  This would vary the outdoor air based on occupancy using CO2 sensors in the Return Air.  However the schedule overrode the air-side economizer.  Can this problem be fixed in DOE2.1E?
 
Varkie Thomas

-----Original Message-----
From: Bob Ramirez [mailto:bob at rer.com]
Sent: Wednesday, March 19, 2003 4:53 PM
To: BLDG-SIM at gard.com
Subject: [BLDG-SIM] Simulation of Demand Controlled Ventilation



Hello group

 

Does anyone out there have experience with simulating demand controlled ventilation in DOE2?  I am especially interested in any work that validates the use of such a model for estimating energy savings from this control scheme.  Any advice or information would be greatly appreciated.  Thanks!

 

Bob

 

 

Bob Ramírez, P.E. 
Senior Engineer 
Bob at RER.com  , Bob.Ramirez at Itron.com 

 

RER is now Itron!
http://www.RER.com/Consulting 
11236 El Camino Real  San Diego, CA 92130    USA

VOICE:858.481.0081X427  FAX:858.481.7550 

 

 

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