[Equest-users] u-values

[tim]

I let my eQuest model generate U-values (see LV-I report - page 2 of
attached pdf)

 

The U-values don't seem to make any sense.  The LV-I report says a door has
a U-value of 2.080.

I looked up hollow metal insulated doors on the internet and found one that
has a value of 0.16.

Why is there such a difference?

 

I know how to change u-values in detailed edit mode, but wonder what
experience others have had with determining what U-values should be used.

I used an online calculator to find the u-value for a wall like mine (also
attached).

Having trouble figuring out how to determine/ enter u-value for a roof
assembly that is a trussed attic with insulation above ceiling as well as
others.

 

I also realize ASHRAE has basic u-values listed, but my leed reviewer
commented saying ASHRAE U-values should be used only if the actual U-values
are unknown.  I assume this means if the makeup of a wall or assembly cannot
be determined.

 

Thanks for your help in advance!

Timothy W. Hill

tim.JRGA at fuse.net

 

John R. Grier, Architect

11309 Deerfield Road

Cincinnati, Ohio 45242

(513)489-3690

 

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.onebuilding.org/pipermail/equest-users-onebuilding.org/attachments/20120830/7d9903a1/attachment.htm>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: Strand Proposed 2 - LV-H LV-I.pdf
Type: application/pdf
Size: 6044 bytes
Desc: not available
URL: <http://lists.onebuilding.org/pipermail/equest-users-onebuilding.org/attachments/20120830/7d9903a1/attachment.pdf>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: Existing wall.pdf
Type: application/pdf
Size: 334462 bytes
Desc: not available
URL: <http://lists.onebuilding.org/pipermail/equest-users-onebuilding.org/attachments/20120830/7d9903a1/attachment-0001.pdf>