[Equest-users] Metric unit

jean-luc.godillon at schneider-electric.com jean-luc.godillon at schneider-electric.com
Wed May 30 19:20:48 PDT 2012

Hi there


Has anyone worked out to apply the metric unit to equest?




Jean-Luc Godillon  |   Schneider Electric   |  Buildings Business  |
AUSTRALIA  |   Manager Project Development and Engineering 
Phone: +61 3 8807 4600   |   Fax: +61 3 8807 4601   |   Mobile: +61
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Email: jean-luc.godillon at schneider-electric.com
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<http://www.schneider-electric.com/buildings>   |   Address: Level 2, 40
Albert Road, South Melbourne, VIC, 3205 

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From: equest-users-bounces at lists.onebuilding.org
[mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of Bobby
Sent: Thursday, 31 May 2012 12:19 PM
To: equest-users at lists.onebuilding.org
Subject: [Equest-users] building shade effect


Hello everyone!


I am working on a project, a high rise office building. The architect
added louvers as part of the design which I admire for sophistication.
Attached is a picture that shows the louvers outside for shading. But,
when I did the initial run, the effect of the louvers is only around 1%
energy improvement from the baseline.


Please let me know if there is a better way to do it in eQuest. What I
did was to measure the louver thickness and proportioned it to the glass
area that it covers. I put the fraction as "Transmittance:" in Building
and Fixed Shades properties. Doe 2 help says: 


Fraction of incident solar radiation that is transmitted by the shading
surface. The default value is 0.0, which means the surface is opaque. A
value greater than 0.0 represents a device that passes some solar
radiation, such as a tree, lattice, or fabric. Using SHADE-SCHEDULE
allows seasonal variation in transmittance. Daylighting calculation
assumes TRANSMITTANCE = 0.


The design team quite find it hard to believe that the louvers have very
minimal effect. I told them to consider the window to wall ratio (almost
60%) and that fact that they will be using a clear glass, even with
these louvers partial UV rays still pass through the gaps that spreads
allover the glass surface that adds to the heat load for air
conditioning. Ive noticed to some of my other projects in tropical
countries, building shades don't have much effect to energy efficiency.
Did anyone encounter the same result with building shades? 






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