Hello All,
I am working on a school project. The ventilation is "Mechanical Ventilation 100% Outside Air" +natural ventilation in all of the classrooms. There are several multiple zone AHUs and several single zone AHUs.
I use v.4 of the online form.
I chechked the box "Mechanical Ventilation 100% Outside Air" and started filling in table IEQp1-A3.
Do I need to fill anything exept these tables?
I have noticed the following while filling in the IEQp1-A3 table:
There is NO fieled where one can fill in the Project Design Outdoor Airflow for EACH SEPARATE ZONE so that the table can compare the results zone by zone. At the bottom of the table there is the SUM of the Vot values for all zones and under it one is asked to fill in the Project Design Outdoor Airflow for the AHU.
In this case one can be below the Voz for several zones but still will manage to comply to the credit if he has more flow than the required in other zones of the same AHU.
Am I correct or do I miss something because this seems terribly wrong?
(I have asked this question in other section of the forum by mistake, sorry)
Roger Chang
Principal, Energy and Engineering LeaderDLR Group | Westlake Reed Leskosky
LEEDuser Expert
398 thumbs up
August 31, 2012 - 1:24 pm
Each zone needs to comply with ASHRAE 62.1, even if the form does not ask for details on a zone by zone level. I suggest submitting a separate spreadsheet with your calculations for backup.
Dylan Connelly
Mechanical EngineerIntegral Group
LEEDuser Expert
472 thumbs up
September 4, 2012 - 10:28 pm
Todor,
With the V4 form you are correct that you only need to enter in the total OA for each system, not each zone as in previous versions of the form and LEED. No need to submit additional backup calculations in this regard.
You are penalized in zones where you aren't providing as much OA with your Zp coefficient. The forms will only give you an error if you to have zones with a minimum SA that is lower than required OA requirements of that zone.