On the requirements of this prerequisite it says " Each air-handler must be measured; sampling or grouping of air-handlers is prohibited";
If I have three AHU's working for the same zone how can I calculate each one? I have only one area and a number of people for the zone.
Is there a way to calculate each one? Help!
Thanks in advance.
Ben Stanley
Senior Sustainability ManagerWSP - Built Ecology
LEEDuser Expert
250 thumbs up
February 20, 2012 - 10:15 am
You could assign a sub-portion of the zone (space and people) to each AHU and run the calculations that way. The apportioned spaces to each AHU can be based on what makes the most sense given the system design.
Dorilee Torres
8 thumbs up
February 22, 2012 - 9:31 am
And if I have several AHUs that are back-up, do I need to make the calculations also?
Ben Stanley
Senior Sustainability ManagerWSP - Built Ecology
LEEDuser Expert
250 thumbs up
February 22, 2012 - 11:51 am
It sounds like you need to determine what the worst-case scenario is for ventilation in the applicable space and then run the calculations and outside air testing accordingly. If the back-up AHUs run during the worst case scenario then they should be included.
The worst case scenario is generally highest occupancy during typical operations and lowest amount of outside air to the space. This often occurs during heating season but that is not always the case.