questions of Install Drift Eliminators and minimum efficiencies

Jie Zhang

LEEDuser Basic Member

9 thumbs up

April 1, 2011

In the pdf download from usgbc.org, one of the credits requirements is 'install drift eliminators that achieve minimum efficiencies of 0.2% for counter-flow systems or 0.5% for cross-flow system'. Anyone who knows this efficiencies? What doest it mean? And how to calculate or measure? Thanks very much.

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Jie Zhang

LEEDuser Basic Member

9 thumbs up

Tue, 04/19/2011 - 08:49

Compared the LEED requirement of drift eliminator the minimum efficiencies are more higher than Chinese standard requirements. Now what I want to know is how about the average level of drift eliminator in USA. Another question is about the maximum level of conductivity. The unit of conductivity is μS/ml, however I do some study of this value that the unit is μS/cm. I wonder that it is just a printing mistake or the 'μS/ml' needs to convert to 'μS/cm'. Thanks and hope for answer.

Batya Metalitz

Technical Director, LEED

USGBC

LEEDuser Expert

225 thumbs up

Wed, 05/25/2011 - 15:57

The credit authors have looked over this credit and believe that the units for conductivity are correct with μS/ml, with ml being equal to cm3. They are also staying with the drift eliminator values listed in the credit. This credit is currently being revised though, and we'll have a new version out in July that may help to clarify.