[Equest-users] overhangs

[Nick Caton]

Further to Brian's response,

The last property (rightmost on the spreadsheet view, in detailed mode)
you can define for any given surface is called SHADING-SURFACE.  By
default I think the wizards make all surfaces "self shading," so a basic
response to your question would be "everything is a shade," in addition
to potentially being a heat-transfer surface.

Here's a copy of the help file for that entry:

SHADING-SURFACE
Accepts code-words YES and NO that tell the program that this exterior
surface shades other surfaces. YES causes this EXTERIOR-WALL surface to
be considered also as a BUILDING-SHADE surface with TRANSMITTANCE = 0.
Whenever an exterior wall is capable of shading another exterior surface
(for example, in an L-shaped building), setting SHADING-SURFACE = YES
greatly simplifies shading surface input. See "Building Shades" in the
DOE-2.2 Topics.

~Nick

NICK CATON, E.I.T.
PROJECT ENGINEER
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olathe ks 66061
direct 913 344.0036
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-----Original Message-----
From: equest-users-bounces at lists.onebuilding.org
[mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of B.
Fountain
Sent: Monday, June 14, 2010 1:35 PM
To: Jacob Faiola
Cc: equest-users at lists.onebuilding.org
Subject: Re: [Equest-users] overhangs

If you are defining an exterior wall (aka roof) then it will be a heat
transfer surface.  To specify an overhang, you need to create a building
shade.

> Hi all;
>
> How do I ensure that eQUEST does not transfer heat through my roof
> overhangs into the interior spaces?
> How does the software determine what part of the exterior roof surface
is
> actual heat transfer medium, as opposed to overhang for shading?
>
> thanks,
> Jacob
>
>
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