[Equest-users] U value (Building envelope Construction)

[pranita kothuru]

Hello All -

I don't know whether I am understanding the R value input in eQuest in the
way its supposed to be.

In the Building Envelope Constructions *(3-25) in the DD Wizard:*

Construction: Custom, layer by layer construction

Layer-by layer: Arena Roof (name of the roof I have created)

In the layer by layer window I use the 'Specify Resistance' (under the spec
method) option and insert the overall R value of the roof directly below in
the box.

When I go to the.inp file, I see the following -

"EL1 Roof Construction" = CONSTRUCTION
   TYPE             = U-VALUE
   U-VALUE          = 30
   ABSORPTANCE      = 0.6
   ROUGHNESS        = 1

It says the U -value is 30 which is really low. Am I missing something here
in understanding the U-value and R value. (I have inserted the r value as 30
not the U value)

Thank you for your comments in advance.
-- 

*Pranita.
*
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.onebuilding.org/pipermail/equest-users-onebuilding.org/attachments/20101012/392c1a03/attachment.htm>