[Bldg-sim] Design Builder : Low E coated surface

[Nick Kovess]

Hi Deepa,

I believe 'flip' means to switch which 'surface' on the individual pane the low-E coating is applied to. The order of the panes in the glazing setup will not change if you tick the flip box. When you are building up a glazing system, design builder clearly shows 'outermost pane' and 'innermost pane', these do not change if you check the flip box.

Basically I believe it is the opposite to what Chris just said.

In terms of finding out on which surface the coating originally is, and thus where it will move to if 'flipped', I have found using the software Window5 easiest for this. In Window5, find the same pane you wish to use in DesignBuilder and when you look at the glazing set up you can see a dashed line which indicates the location of the coating. 

Hope that helps



Nick Kovess
Engineer | Building Science Group
 
Meinhardt
Level 12
501 Swanston Street
Melbourne VIC 3000
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>>> Chris Yates <chris at zed-uk.com> 28/08/2009 3:14 pm >>>
Hi Deepa
I think flip means swap the place of inside and outside pane - not  
flipping the individual panes so that the coating moves to the  
opposite surface.
DB uses the International Glazing Database which you can download from  
lbnl. It's easy to use so worth downloading a copy. Unforunately you  
can't transfer the results to DB at present.

Chris

Sent from my iPhone

On 28 Aug 2009, at 04:38, deepa chandrashekaran <creations.deepa at googlemail.com 
 > wrote:

> Jeff,
>
> Thank you for responding. I agree that it depends on the climate.
>
> Design Builder has the option called 'flip' while making the double  
> pane assembly. Hence I was not clear as to which surface is the  
> coating on and what does flip actually mean?
>
>
> Deepa
>
>
> On Thu, Aug 27, 2009 at 8:26 PM, Jeff Haberl <jhaberl at tamu.edu> wrote:
> The "surface" depends on the climate.
>
> Cooling dominated climates benefit from the low-E on the inside  
> surface of the outside pane.
>
> Heating dominated climates benefit from the low-E on the outside  
> surface of the inside pane.
>
> Such characteristics are normally defined by the applicable codes  
> for a given location.
>
> Jeff
> BB 8=! 8=) :=) 8=) ;=) 8=) 8=( 8=) :=') 8=) 8=) 8=? BB
>
> Jeff S. Haberl, Ph.D., P.E., FASHRAE...................jhaberl at esl.tamu.edu 
>
> Professor. 
> .....................................................Office Ph: 979-845-6507
>
> Department of Architecture.......................Lab Ph: 979-845-6065
>
> Energy Systems Laboratory.......................FAX: 979-862-2457
>
> Texas A&M University..............................77843-3581
>
> College Station, Texas, USA.......................URL: www- 
> esl.tamu.edu
>
> BB 8=/ 8=) :=) 8=) ;=) 8=) 8=() 8=) 8=?  8=) 8=) 8= BB
>
> From: bldg-sim-bounces at lists.onebuilding.org <bldg-sim-bounces at lists.onebuilding.org 
> >
> To: Bldg-Sim <bldg-sim at lists.onebuilding.org>
> Sent: Thu Aug 27 21:58:12 2009
> Subject: [Bldg-sim] Design Builder : Low E coated surface
> Hello all,
>
> I am trying to model several types of Low E glazing in Design  
> Builder to understand the effect on the peak heating and cooling load.
>
> While choosing different glazing, I could not understand which  
> surface of the glazing has the Low E coating.
>
> I would appreciate any inputs about this aspect.
>
>
> Thanks,
> Deepa Chandrashekaran, LEED AP
> Master of Building Science 2010
> University of Southern California
>
>
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