Hello.
Is it necessary to consider the zone air distribution effectiveness (Ez) for projects unable to meet ASHARE 62.1-2007 when calculating 10cfm/person minimum ventilation?
Thanks in advance,
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Julia Weatherby
PresidentWeatherby Design & Co. Engineers
94 thumbs up
March 21, 2014 - 12:16 pm
No, you do not need to consider Ez for air handling units unable to meet ASHRAE 62.1-2007. The 10 cfm/person is as measured at the AHU outdoor intake.
However, you do need to evaluate each AHU separately to determine whether it can meet ASHRAE 62.1-2007, prior to using the 10 cfm/person alternative. You may need to submit some AHU's through the ASHRAE 62.1-2007 path while others in the same building use the 10 cfm/person route.
Noriko Nagazumi
Woonerf Inc.74 thumbs up
March 23, 2014 - 9:21 pm
Thank you very much, Julia!