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

[Carol Gardner]

It sounds like you are trying to use a U-value as a layer. This will give
you problems. Create a material with the resistance you want and then use it
as one of the layers for your wall (construction).

Carol

On Tue, Oct 12, 2010 at 11:47 AM, pranita kothuru <pranita.kothuru at gmail.com
> wrote:

> 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.
> *
>
>
>
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-- 
Carol Gardner PE
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