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Re: [EnergyPlus_Support] question about vapor barrier

This layer is so thin that the thermal properties will have very little impact 
on the results.  Look in a handbook of material properties, or use the 
properties of "MATERIAL:Regular,E3 - 3 / 8 IN FELT AND MEMBRANE" from 
BLASTMaterials.idf (in the Datasets folder) and change the thickness to an 
appropriate value.

Mike


On 11 Aug 2004, at 15:31, Zheng Li wrote:

> Dear:
> 
> I want to use the vapor barrier for the envelope. I found the vapor barrier
> moisture characteristics in MOISTUREMATERIAL of the DataSets, but I cannot find
> the other related information of this surface construction element to fill up
> the "MATERIAL: REGULAR". Where can I get it? Is there any other materials that I
> can use to  take place the vapor barrier?
> 
> Thanks!
> 
> Best Regards
> LI
> 
> 
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========================================================
Michael J. Witte, GARD Analytics, Inc.
EnergyPlus Testing and Support      
EnergyPlus-Support@xxxxxxxx




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