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<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>I tried out IES-VE a few months or a year
ago with some people because the potential for this type of integration seemed
very exciting. However, we found the HVAC side to be pretty basic.
For a lot of building types, there are significant savings to be had by
changing HVAC control schemes and/or configurations and using HVAC types that
were not well-represented in IES-VE the last time I saw it. It seemed
like a great interface to use if you were trying to design a building to use
minimal energy due to envelope, orientation, natural ventilation, etc. In
other words, it seems strong on the loads calculation side. On the system
use side, though, it seemed a lot more limited than DOE2 or EnergyPlus.
For that reason, I have also stuck with the multiple-tools method. I
agree with all who wrote that it would be wonderful to have one integrated tool
in the future! Rob does bring up an interesting point about the
resolution of spaces needed for daylighting vs. thermal vs. architectural
modeling. Architects especially have to be so detailed in their models
that I’ve often just ended up using the floor plans they provided,
deleting a bunch of elements out of those, and scaling wall heights and
windows. Other than that, their 3D models only serve to help me visualize
the building myself. It would be nice if we didn’t end up tripling
the effort like we all do now, but so far I don’t see a great way around
it (unless you don’t need complex system modeling – then you could
use IES-VE as discussed below).<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Kristin Field<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
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face="Times New Roman"><span style='font-size:12.0pt'>
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<p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>From:</span></font></b><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'>
bldg-sim-bounces@lists.onebuilding.org
[mailto:bldg-sim-bounces@lists.onebuilding.org] <b><span style='font-weight:
bold'>On Behalf Of </span></b>CARNEY Ronan<br>
<b><span style='font-weight:bold'>Sent:</span></b> Wednesday, March 11, 2009
10:34 PM<br>
<b><span style='font-weight:bold'>To:</span></b> Rob Guglielmetti; Ross Harding<br>
<b><span style='font-weight:bold'>Cc:</span></b> bldg-sim@lists.onebuilding.org<br>
<b><span style='font-weight:bold'>Subject:</span></b> Re: [Bldg-sim] One model</span></font><o:p></o:p></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=blue face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:blue'>Actually, I'm utilising IES to do HVAC
design, Energy Analysis, PMV calc, lighting lux design, lighting power
intensity design and natural daylight analysis all in line with the Australian
Standards and Green Star (another form of LEED) requirements. </span></font><o:p></o:p></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=blue face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:blue'>Although the software costs money, I've
found it to be worthwhile battling against it's flaws and it gives us the
results which we require. </span></font><o:p></o:p></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
<p class=MsoNormal><strong><b><u><font size=2 color=blue face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:blue'>Please note, this is a
one model approach</span></font></u></b></strong><font size=2 color=blue
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:blue'>. It's easy
to start a project at CD (concept design) stage within Google Sketchup and to
utilise the freeware version of IES to do alternate design analysis. However,
it's way better if the full suite is purchases and the model is crossed over
into IES. Within IES multiple analysis and detailed designs can be modelled
quickly and with fantastic final project results. I know, I've done it.</span></font><o:p></o:p></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=blue face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:blue'>Also with the daylight analysis, if you've
got a detailed building with over 100000 surfaces, it's going to take forever
to do the analysis, that's my only issue with the software. However, the
software is developing multithreading facility within it's software, therefore
decreasing the time for analysis dramatically.</span></font><o:p></o:p></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=blue face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:blue'>Should anyone want to discuss my
approaches further, and are in <st1:place w:st="on"><st1:City w:st="on">Brisbane</st1:City></st1:place>,
I welcome the opportunity to meet and greet with you.</span></font><o:p></o:p></p>
<p><b><i><font size=2 color=navy face="Times New Roman"><span style='font-size:
10.0pt;color:navy;font-weight:bold;font-style:italic'><!-- Converted from text/rtf format -->Regards,</span></font></i></b><font
size=2><span style='font-size:10.0pt'><br>
<b><i><span style='font-weight:bold;font-style:italic'>Ronan Carney</span></i></b><br>
</span></font><font size=2 face=Complex><span style='font-size:10.0pt;
font-family:Complex'>Electrical Engineer</span></font><font size=2><span
style='font-size:10.0pt'><br>
</span></font><b><font size=2 color=maroon face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:maroon;font-weight:bold'>Project Services</span></font></b><font
size=2><span style='font-size:10.0pt'><br>
</span></font><font size=2 color=blue face=Wingdings><span style='font-size:
10.0pt;font-family:Wingdings;color:blue'>*</span></font><font size=2
color=purple face=Arial><span style='font-size:10.0pt;font-family:Arial;
color:purple'>Level 5B <st1:address w:st="on"><st1:Street w:st="on">80 George
St</st1:Street><font color=black face="Times New Roman"><span
style='font-family:"Times New Roman";color:windowtext'> </span></font><st1:City
w:st="on">Brisbane</st1:City></st1:address></span></font><font size=2><span
style='font-size:10.0pt'><br>
</span></font><font size=2 color=blue face=Wingdings><span style='font-size:
10.0pt;font-family:Wingdings;color:blue'>(</span></font><font size=2
face=Arial><span style='font-size:10.0pt;font-family:Arial'>Ph:</span></font><font
size=2><span style='font-size:10.0pt'> </span></font><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>(07) 3224 5983</span></font><font
size=2><span style='font-size:10.0pt'><br>
</span></font><font size=2 color=blue face=Wingdings><span style='font-size:
10.0pt;font-family:Wingdings;color:blue'>2</span></font><font size=2
face=Arial><span style='font-size:10.0pt;font-family:Arial'>Fax: (07) 3224 6151</span></font><font
size=2><span style='font-size:10.0pt'><br>
</span></font><font size=2 color=blue face=Wingdings><span style='font-size:
10.0pt;font-family:Wingdings;color:blue'>,</span></font><font size=2
face=Arial><span style='font-size:10.0pt;font-family:Arial'>Email<font
color=blue><span style='color:blue'>:</span></font></span></font><u><font
size=2><span style='font-size:10.0pt'> </span></font></u><a
href="mailto:Ronan.Carney@projectservices.qld.gov.au"
title="mailto:Ronan.Carney@projectservices.qld.gov.au"><font size=2 face=Arial
title="mailto:Ronan.Carney@projectservices.qld.gov.au"><span
title="mailto:Ronan.Carney@projectservices.qld.gov.au"><span style='font-size:
10.0pt;font-family:Arial'>Ronan.Carney@projectservices.qld.gov.au</span></span></font></a>
<o:p></o:p></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
<div class=MsoNormal align=center style='text-align:center'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'>
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<p class=MsoNormal style='margin-bottom:12.0pt'><b><font size=2 face=Tahoma><span
style='font-size:10.0pt;font-family:Tahoma;font-weight:bold'>From:</span></font></b><font
size=2 face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'>
bldg-sim-bounces@lists.onebuilding.org
[mailto:bldg-sim-bounces@lists.onebuilding.org] <b><span style='font-weight:
bold'>On Behalf Of </span></b>Rob Guglielmetti<br>
<b><span style='font-weight:bold'>Sent:</span></b> Thursday, 12 March 2009 1:12
PM<br>
<b><span style='font-weight:bold'>To:</span></b> Ross Harding<br>
<b><span style='font-weight:bold'>Cc:</span></b> bldg-sim@lists.onebuilding.org<br>
<b><span style='font-weight:bold'>Subject:</span></b> Re: [Bldg-sim] One model</span></font><o:p></o:p></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>On Mar 11, 2009, at 6:09 PM, Ross Harding wrote:<o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-bottom:12.0pt'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><span class=apple-style-span><span style='webkit-text-stroke-width: -1'><font
size=1 color="#144fae" face="Times New Roman"><span lang=EN-AU
style='font-size:9.0pt;color:#144FAE'><span style='orphans: 2;widows: 2;
webkit-border-horizontal-spacing: 0px;webkit-border-vertical-spacing: 0px;
webkit-text-decorations-in-effect: none;webkit-text-size-adjust: auto;
webkit-text-stroke-width: 0;word-spacing:0px'>The ultimate goal for us would be
to use one model for daylight and energy models, but I haven’t found that
quite that simple as most software requires varying drawing techniques.</span></span></font></span><font
color=black><span lang=EN-AU style='color:black'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'></span><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Amen brother! Another issue is that while the energy model has to
include the total building -- all spaces and systems -- to be a complete
picture of the energy use, a Radiance-based daylight model does not necessarily
require all the spaces to be modeled simultaneously. Indeed, the accuracy
of the ambient calculation is directly affected by the maximum size of the
scene, and so conducting a simultaneous daylight simulation of an entire
building at an acceptably rigorous ambient resolution can be -- is generally --
time-prohibitive.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>As mentioned in a recent thread on this list, Thomas Bleicher's
"su2rad" plugin for SketchUp can export a SU model to Radiance format
and there is also an E+ plugin to allow one to use the same SU model for E+
analysis; in theory, these three components (SketchUp, su2rad and the E+
plugin) allow for a "single model" approach to energy and daylight
modeling. However, because the su2rad exporter wants to take the entire model
and create a single Radiance scene description, that creates the aforementioned
problem of the ambient calculation getting out of hand fairly quickly. I
suppose through intelligent layering and model structuring, one could create a
model that could be exported to Radiance in "space components", but
I'm not sure if this is compatible with the E+ plugin's layering/model
organization requirements.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>- Rob Guglielmetti<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>********************************************************</span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Kristin M. Field</span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Engineer II - Mechanical</span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Electricity, Resources & Building Systems Integration</span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>National Renewable Energy Laboratory</span></font><o:p></o:p></p>
<p class=MsoNormal><st1:Street w:st="on"><st1:address w:st="on"><font size=2
face=Arial><span style='font-size:10.0pt;font-family:Arial'>1617 Cole Blvd.</span></font></st1:address></st1:Street><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Mail Stop #1725</span></font><o:p></o:p></p>
<p class=MsoNormal><st1:place w:st="on"><st1:City w:st="on"><font size=2
face=Arial><span style='font-size:10.0pt;font-family:Arial'>Golden</span></font></st1:City><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>, <st1:State
w:st="on">CO</st1:State> <st1:PostalCode w:st="on">80401</st1:PostalCode></span></font></st1:place><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Phone: 303.384.7376</span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Fax: 303.384.7540</span></font><o:p></o:p></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> </span><o:p></o:p></font></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
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