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<title>EnergyPlus--Quest Competitor or Natural Evolution</title>
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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Bill <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>I agree with your comments about operational issues contributing
to lack of “performance” in high-performance buildings. <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>However, on the design side, many energy analysis/simulation
programs don’t allow for the modeling of sophisticated ‘green’
heating and cooling strategies, i.e. mix mode, their plant/system definitions
are limited, and they can’t simulate the buildings operation, i.e. night-time
cooling. <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>The only program EnergyPlus program we’ve found that overcomes
many of these limitations is Hevacomp out of the UK. For retocommissioning
work, it seems to offer the right set of ease-of-use and capabilities.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"DIN","serif";
color:#6A6A6A'>Dan Monaghan | Global Marketing Manager<br>
Building Performance Group<o:p></o:p></span></b></p>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"DIN","serif";
color:#6A6A6A'>Bentley Systems, Incorporated<o:p></o:p></span></b></p>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"DIN","serif";
color:#6A6A6A'>Phone</span></b><span style='font-size:10.0pt;font-family:"DIN","serif";
color:#6A6A6A'>: +1-410-207-5501| <b>Skype</b>: dmonaghan.skype</span><span
style='font-size:10.0pt;font-family:"DIN","serif";color:#1F497D'><br>
</span><b><span style='font-size:10.0pt;font-family:"DIN","serif";color:#6A6A6A'>E-mail</span></b><span
style='font-size:10.0pt;font-family:"DIN","serif";color:#6A6A6A'>: <a
href="mailto:christine.byrne@bentley.com">dan.monaghan@bentley.com</a></span><b><span
style='font-size:10.0pt;font-family:"DIN","serif";color:#1F497D'> </span></b><b><span
style='font-size:10.0pt;font-family:"DIN","serif";color:#6A6A6A'>| URL:</span></b><span
style='font-size:10.0pt;font-family:"DIN","serif";color:#1F497D'> </span><span
style='font-size:10.0pt;font-family:"DIN","serif";color:#6A6A6A'><a
href="http://www.bentley.com/">www.bentley.com</a></span><span
style='font-size:10.0pt;font-family:"DIN","serif";color:#1F497D'><br>
</span><b><span style='font-size:10.0pt;font-family:"DIN","serif";color:#6A6A6A'>Address</span></b><span
style='font-size:10.0pt;font-family:"DIN","serif";color:#6A6A6A'>: Bentley | 40
Dunvegan Rd. | Baltimore| MD | 21228 | USA</span><span style='font-size:10.0pt;
font-family:"DIN","serif";color:#1F497D'> <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><a href="http://www.bentley.com/"><span style='font-size:
11.0pt;color:#1F497D;text-decoration:none'><img border=0 width=158 height=37
id="Picture_x0020_1" src="cid:image001.png@01C9BC1B.2F92AB90"></span></a><span
style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
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<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> Bill
[mailto:bkoran@qwest.net] <br>
<b>Sent:</b> Sunday, April 12, 2009 11:00 PM<br>
<b>To:</b> Dan Monaghan; equest-users@lists.onebuilding.org<br>
<b>Subject:</b> RE: [Equest-users] EnergyPlus--Quest Competitor or Natural
Evolution<o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:blue'>I work mostly in the existing buildings (non- or pre-"green)
markets, but to the extent green buildings don't live up to the promises is
largely due to operaitons, not design. Many green buildings are more
complex, and since even more traditional buildings typically have significantly
sub-optimal operations, it is only logical that green buildings will suffer at
least as much when compared to expectations/simulation results.</span><o:p></o:p></p>
<p class=MsoNormal> <o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:blue'>Some interesting documentation of green building performance is
available at <a href="http://www.newbuildings.org">www.newbuildings.org</a>.</span><o:p></o:p></p>
<p class=MsoNormal> <o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:blue'>As far as Energy Plus and eQuest, I only have experience with DOE-2
and eQuest. EnergyPlus should be superior since it was built using the
best of DOE-2 and BLAST. IIRC, it was moving away from a
transfer-function-based simulation to a heat balance-based simulation.
This should also help it to be superior in some circumstances. DOE-2
derivative simulation tools are generally weak at simulating suboptimal
operations, and are very poor at simulating certain controls improvements or
retrocommissioning measures. I don't know how much better EnergyPlus is
in this regard.</span><o:p></o:p></p>
<p class=MsoNormal> <o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:blue'>At any rate, because of federal funding, and that some (many/most?)
federal projects and organizations will only allow EnergyPlus, it seems certain
that EnergyPlus is the future. My use of DOE-2 dates back to before there
were convenient interfaces and we dealt only with BDL and user-defined
functions, and we needed the stacks of documentation to know what we were
doing. I certainly believe that as more interfaces for EnergyPlus are
developed, more students come out of school with knowledge of EnergyPlus, and
more of us learn EnergyPlus, it will see greater and greater use.</span><o:p></o:p></p>
<p class=MsoNormal> <o:p></o:p></p>
<p><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>William E.
Koran, P.E.</span> <br>
<span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>Senior
Engineer</span> <br>
<span style='font-family:"Tahoma","sans-serif"'>Q u E S T</span> <br>
<span style='font-size:7.5pt;font-family:"Tahoma","sans-serif"'>Quantum Energy
Services and Technologies</span> <br>
<span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>Web:</span> <a
href="http://www.quest-world.com/" title="blocked::http://www.quest-world.com/"><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>www.quest-world.com</span></a>
<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<div class=MsoNormal align=center style='text-align:center'>
<hr size=2 width="100%" align=center>
</div>
<p class=MsoNormal style='margin-bottom:12.0pt'><b><span style='font-size:10.0pt;
font-family:"Tahoma","sans-serif"'>From:</span></b><span style='font-size:10.0pt;
font-family:"Tahoma","sans-serif"'> equest-users-bounces@lists.onebuilding.org
[mailto:equest-users-bounces@lists.onebuilding.org] <b>On Behalf Of </b>Dan.Monaghan@bentley.com<br>
<b>Sent:</b> Sunday, April 12, 2009 7:05 PM<br>
<b>To:</b> equest-users@lists.onebuilding.org<br>
<b>Subject:</b> [Equest-users] EnergyPlus--Quest Competitor or Natural
Evolution</span><o:p></o:p></p>
<p><span style='font-family:"Calibri","sans-serif"'>Thanks to</span> <span
style='font-family:"Calibri","sans-serif"'>all</span> <span style='font-family:
"Calibri","sans-serif"'>the people</span> <span style='font-family:"Calibri","sans-serif"'>who
responded to my question.</span><o:p></o:p></p>
<p><span style='font-family:"Calibri","sans-serif"'>A few of you ask me to post
the result from my very unscientific survey.</span><o:p></o:p></p>
<p><span style='font-family:"Calibri","sans-serif"'>The list is
split 50%, 50% in their opinion that EnergyPlus will become a natural
transition to eQuest.</span><o:p></o:p></p>
<p><span style='font-family:"Calibri","sans-serif"'>The basic sentiment is that
eQuest is recognized to be less capable, but faster and easier to use.</span> <o:p></o:p></p>
<p><span style='font-family:"Calibri","sans-serif"'>However,</span> <span
style='font-family:"Calibri","sans-serif"'>almost</span> <span
style='font-family:"Calibri","sans-serif"'>all</span> <span style='font-family:
"Calibri","sans-serif"'>who responded</span> <span style='font-family:"Calibri","sans-serif"'>recognized
that as the demand for high-performance buildings grows, the ability to</span><i>
</i><i><span style='font-family:"Calibri","sans-serif"'>accurately</span></i> <span
style='font-family:"Calibri","sans-serif"'>predict energy consumption, C02 emissions,
occupant</span> <span style='font-family:"Calibri","sans-serif"'>comfort</span>
<span style='font-family:"Calibri","sans-serif"'>and life cycle costs</span> <span
style='font-family:"Calibri","sans-serif"'>are going to become more
important.</span> <span style='font-family:"Calibri","sans-serif"'> I read
this to mean that</span> <span style='font-family:"Calibri","sans-serif"'>the</span>
<span style='font-family:"Calibri","sans-serif"'>demand for detailed analysis
tools</span> <span style='font-family:"Calibri","sans-serif"'>like EnergyPuls
is likely to increase.</span><o:p></o:p></p>
<p><span style='font-family:"Calibri","sans-serif"'>Someone asked me why
Bentley cares. We believe that there’s a hole in the U.S. energy
analysis/simulation market. We believe, as this survey indicates, that
the tools available to U.S. designers seem to fall into two camps. Tools that
are</span> <span style='font-family:"Calibri","sans-serif"'>easy-to-use, but
inaccurate/incomplete. Or, tools that are precise, but difficult to use and
slow. </span> <o:p></o:p></p>
<p><span style='font-family:"Calibri","sans-serif"'>Unfortunately, because of
this we see:</span><o:p></o:p></p>
<p> <o:p></o:p></p>
<p><span style='font-family:"Calibri","sans-serif"'>1. </span>
<span style='font-family:"Calibri","sans-serif"'>Many “green”
building don’t live up to the promises </span><o:p></o:p></p>
<p><span style='font-family:"Calibri","sans-serif"'>2. </span>
<span style='font-family:"Calibri","sans-serif"'>Robust energy simulation is
typically reserved for</span> <span style='font-family:"Calibri","sans-serif"'>“special”
projects, or certain</span> <span style='font-family:"Calibri","sans-serif"'>project
types.</span><o:p></o:p></p>
<p><span style='font-family:"Calibri","sans-serif"'>3. </span>
<span style='font-family:"Calibri","sans-serif"'>Accurate energy analysis
is typically siloed, as oppose to integrated into the design process </span><o:p></o:p></p>
<p><span style='font-family:"Calibri","sans-serif"'>As the leader in building
engineering and analysis software or mission is “sustaining the worlds
infrastructure”. As such we’re working on solving this problem,</span>
<a href="http://www.bentley.com/eps"><span style='font-family:"Calibri","sans-serif"'>www.bentley.com/eps</span></a><span
style='font-family:"Calibri","sans-serif"'>.</span><o:p></o:p></p>
<p><b><span style='font-size:10.0pt;font-family:"DIN","serif";color:#6A6A6A'>Dan
Monaghan | Global Marketing Manager<br>
Building Performance Group</span></b><o:p></o:p></p>
<p><b><span style='font-size:10.0pt;font-family:"DIN","serif";color:#6A6A6A'>Bentley
Systems, Incorporated</span></b><o:p></o:p></p>
<p><b><span style='font-size:10.0pt;font-family:"DIN","serif";color:#6A6A6A'>Phone</span></b><span
style='font-size:10.0pt;font-family:"DIN","serif";color:#6A6A6A'>:
+1-410-207-5501| <b>Skype</b>: dmonaghan.skype</span><br>
<b><span style='font-size:10.0pt;font-family:"DIN","serif";color:#6A6A6A'>E-mail</span></b><span
style='font-size:10.0pt;font-family:"DIN","serif";color:#6A6A6A'>: </span><a
href="mailto:christine.byrne@bentley.com"><span style='font-size:10.0pt;
font-family:"DIN","serif"'>dan.monaghan@bentley.com</span></a><b><span
style='font-size:10.0pt;font-family:"Calibri","sans-serif"'> </span></b><b><span
style='font-size:10.0pt;font-family:"DIN","serif";color:#6A6A6A'>| URL:</span></b>
<a href="http://www.bentley.com"><span style='font-size:10.0pt;font-family:
"DIN","serif"'>www.bentley.com</span></a><br>
<b><span style='font-size:10.0pt;font-family:"DIN","serif";color:#6A6A6A'>Address</span></b><span
style='font-size:10.0pt;font-family:"DIN","serif";color:#6A6A6A'>: Bentley | 40
Dunvegan Rd.</span> <span style='font-size:10.0pt;font-family:"DIN","serif";
color:#6A6A6A'>| Baltimore| MD | 21228 | USA</span><span style='font-size:10.0pt;
font-family:"DIN","serif"'> </span><o:p></o:p></p>
<p><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black'><img
border=0 id="_x0000_i1026" src="cid:image002.png@01C9BC1B.2F92AB90"
alt="Picture (Device Independent Bitmap)"></span><o:p></o:p></p>
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