[Bldg-sim] Equest3.6 Outside Air System with Demand Control Ventilation - Reports

1 post / 0 new

EQuest 3.6: Modeling a dedicated outside air system (DOAS) which supplies 7 interior zones directly and 48 fancoils. The DOAS MIN-OA-Control = DCV Zone Sensors and MIN-OA-Method = Set by Critical Zone. The critical zone is one of the 7 zones directly supplied by the DOAS. The fan coil MIN-OA-Control = DCV Return Sensor and MIN-OA-Method = Sum of Zone OA and Outside Air From System = DOAS.

The warning message says " DOAS defined as an OA-FROM-SYSTEM has OA flow requirement of 4667 CFM but its calculated OA flow is only 469 CFM. Its MIN -OUTSIDE - AIR has been reset to meet this requirement..."

The system summary report for DOAS shows sum of (7) zones: 469 oa cfm and 6240 supply cfm.

Does anyone know....

1) Is the 4667quantity the DCV OA CFM which includes the "calculated 469 cfm" outside air for the 7 zones directly attached to the DOAS and the outside air to the fancoils that are indirectly attached to the DOAS? Other than the warning, where in the reports can I find this number?

2) Does the 6240 quantity include the 7 directly supplied zones OA cfm, load cfm (approximately 1570 cfm which is reasonable given the peak load report BTUH) and the 48 fancoils OA cfm?

Jane C. Luck's picture
Offline
Joined: 2011-10-02
Reputation: 0