<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"><head><meta http-equiv=Content-Type content="text/html; charset=utf-8"><meta name=Generator content="Microsoft Word 14 (filtered medium)"><!--[if !mso]><style>v\:* {behavior:url(#default#VML);}
o\:* {behavior:url(#default#VML);}
w\:* {behavior:url(#default#VML);}
.shape {behavior:url(#default#VML);}
</style><![endif]--><style><!--
/* Font Definitions */
@font-face
{font-family:Gulim;
panose-1:2 11 6 0 0 1 1 1 1 1;}
@font-face
{font-family:Gulim;
panose-1:2 11 6 0 0 1 1 1 1 1;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:Tahoma;
panose-1:2 11 6 4 3 5 4 4 2 4;}
@font-face
{font-family:Verdana;
panose-1:2 11 6 4 3 5 4 4 2 4;}
@font-face
{font-family:"\@Gulim";
panose-1:2 11 6 0 0 1 1 1 1 1;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0cm;
margin-bottom:.0001pt;
font-size:12.0pt;
font-family:"Gulim","sans-serif";
mso-fareast-language:KO;}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:purple;
text-decoration:underline;}
p
{mso-style-priority:99;
mso-margin-top-alt:auto;
margin-right:0cm;
mso-margin-bottom-alt:auto;
margin-left:0cm;
font-size:12.0pt;
font-family:"Gulim","sans-serif";
mso-fareast-language:KO;}
p.MsoAcetate, li.MsoAcetate, div.MsoAcetate
{mso-style-priority:99;
mso-style-link:"Balloon Text Char";
margin:0cm;
margin-bottom:.0001pt;
font-size:8.0pt;
font-family:"Tahoma","sans-serif";
mso-fareast-language:KO;}
span.BalloonTextChar
{mso-style-name:"Balloon Text Char";
mso-style-priority:99;
mso-style-link:"Balloon Text";
font-family:"Tahoma","sans-serif";
mso-fareast-language:KO;}
span.EmailStyle20
{mso-style-type:personal-reply;
font-family:"Calibri","sans-serif";
color:#1F497D;}
.MsoChpDefault
{mso-style-type:export-only;
font-family:"Calibri","sans-serif";
mso-fareast-language:EN-US;}
@page WordSection1
{size:612.0pt 792.0pt;
margin:70.85pt 70.85pt 70.85pt 70.85pt;}
div.WordSection1
{page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]--></head><body lang=SV link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Hi,<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 lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>I think we constantly underestimate the impact on society of this field. Let’s take some pride in what we do!<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Most of the wealth of developed nations is in the value of buildings. That value is starting to be related to the actual performance of those buildings. (Funny this hasn’t happened before.) We have venture capitalists calling and asking about the validation status of our tool. They want to know if they can trust the performance numbers quoted by someone selling a property. This would hardly have happened a few years back.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Suppose an engineering-proficient company, perhaps like Toyota, was challenged with the task of developing a high performance building. Do you think they would look for the latest ISO standardized monthly hand calculation method for its optimization? No, they would look for the best possible engineering tools available for describing and experimenting with dynamical virtual models of buildings. (Actually, they might not do so well first because they would probably underestimate the pure technical challenges involved).<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Even a big ship, such as the AEC industry, will turn eventually in response to the challenges ahead. At that stage, real knowledge and engineering skills are likely to be more important than committee designed hand calculation methods.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Cheers,<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Per<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US 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 lang=EN-US style='font-size:8.0pt;font-family:"Verdana","sans-serif";color:#1F497D;mso-fareast-language:EN-US'>-----------------------------------------<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:8.0pt;font-family:"Verdana","sans-serif";color:#1F497D;mso-fareast-language:EN-US'>Per Sahlin<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:8.0pt;font-family:"Verdana","sans-serif";color:#1F497D;mso-fareast-language:EN-US'>EQUA Simulation AB <o:p></o:p></span></p><p class=MsoNormal><span style='font-size:8.0pt;font-family:"Verdana","sans-serif";color:#1F497D;mso-fareast-language:EN-US'><a href="mailto:per.sahlin@equa.se"><span lang=EN-US style='color:blue'>per.sahlin@equa.se</span></a></span><span style='font-size:8.0pt;font-family:"Verdana","sans-serif";color:#1F497D;mso-fareast-language:EN-US'> <span lang=EN-US><o:p></o:p></span></span></p><p class=MsoNormal><span style='font-size:8.0pt;font-family:"Verdana","sans-serif";color:#1F497D;mso-fareast-language:EN-US'>+46 8 546 20 111<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:8.0pt;font-family:"Verdana","sans-serif";color:#1F497D;mso-fareast-language:EN-US'>+46 70 422 03 02 (mobile)<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:8.0pt;font-family:"Verdana","sans-serif";color:#1F497D;mso-fareast-language:EN-US'>+46 8 546 20 101 (fax)<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:8.0pt;font-family:"Verdana","sans-serif";color:#1F497D;mso-fareast-language:EN-US'>plurresahlin (skype)<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:8.0pt;font-family:"Verdana","sans-serif";color:#1F497D;mso-fareast-language:EN-US'>Råsundavägen 100<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:8.0pt;font-family:"Verdana","sans-serif";color:#1F497D;mso-fareast-language:EN-US'>169 57 SOLNA, Sweden<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:8.0pt;font-family:"Verdana","sans-serif";color:#1F497D;mso-fareast-language:EN-US'><a href="http://www.equa.se"><span style='color:blue'>http://www.equa.se</span></a> <o:p></o:p></span></p><p class=MsoNormal><span style='font-size:8.0pt;font-family:"Verdana","sans-serif";color:#1F497D;mso-fareast-language:EN-US'>-----------------------------------------<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:8.0pt;font-family:"Verdana","sans-serif";color:#1F497D;mso-fareast-language:EN-US'><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 lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><div style='border:none;border-left:solid blue 1.5pt;padding:0cm 0cm 0cm 4.0pt'><div><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=MsoNormal><b><span lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> bldg-sim-bounces@lists.onebuilding.org [mailto:bldg-sim-bounces@lists.onebuilding.org] <b>On Behalf Of </b>Michael Wetter<br><b>Sent:</b> den 2 februari 2012 07:26<br><b>To:</b> Jeff Haberl<br><b>Cc:</b> </span><span lang=KO style='font-size:10.0pt'>김덕우</span><span lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>; bldg-sim@lists.onebuilding.org<br><b>Subject:</b> Re: [Bldg-sim] the use of dynamic energy simulation tool<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Deuk-Woo<o:p></o:p></p><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>To add to Jeff's answer of point 4), Modelica models that allow dynamic simulation of building energy and control systems are available from <a href="http://simulationresearch.lbl.gov/modelica" target="_blank">http://simulationresearch.lbl.gov/modelica</a>, including source code. These models will run at sub-second time steps (when fast transients are present) and can model realistic representations of control sequences. <o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>The models can also be linked to hardware through BACnet and A/D converters using the Building Controls Virtual Test Bed, <a href="http://simulationresearch.lbl.gov/bcvtb" target="_blank">http://simulationresearch.lbl.gov/bcvtb</a>.<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>See the papers, manuals and user guides at these web sites for more detailed information.<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>All the best,<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>Michael<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p><div><p class=MsoNormal>2012/2/1 Jeff Haberl <<a href="mailto:jhaberl@tamu.edu" target="_blank">jhaberl@tamu.edu</a>><o:p></o:p></p><div><div><p><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>Dear Deuk-Woo,<o:p></o:p></span></p><p><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> <o:p></o:p></span></p><p><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>Here are a few comments on your questions:<o:p></o:p></span></p><div><p><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> <o:p></o:p></span></p><p style='margin-left:38.0pt'><span lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>1.</span><span lang=EN-US style='font-size:7.0pt;font-family:"Times New Roman","serif"'> </span><span lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>To get energy efficiency incentives, such as LEED certificate. </span><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'><o:p></o:p></span></p><p style='margin-left:40.0pt'><span lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>2.</span><span lang=EN-US style='font-size:7.0pt;font-family:"Times New Roman","serif"'> </span><span lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>To compare alternatives (wall material, window, building design) in architect point of view. </span><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'><o:p></o:p></span></p><p style='margin-left:40.0pt'><span lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>3.</span><span lang=EN-US style='font-size:7.0pt;font-family:"Times New Roman","serif"'> </span><span lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>To compare alternatives (system type and configuration, COP, etc.) in mechanical engineer point of view. </span><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'><o:p></o:p></span></p><p style='margin-left:38.0pt'><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> <o:p></o:p></span></p></div><p style='margin-left:38.0pt'><span lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>For Items #1 - 3, EQUEST, EP+ or TRNSYS will do. In the U.S. EQUEST is the most widely used by the AE community. Note, for most of these simulations an hourly simulation will do, which is not a true dynamic simulation.</span><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'><o:p></o:p></span></p><div><p style='margin-left:38.0pt'><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> <o:p></o:p></span></p><p style='margin-left:38.0pt'><span lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>4.</span><span lang=EN-US style='font-size:7.0pt;font-family:"Times New Roman","serif"'> </span><span lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>To develop energy efficient control strategies and to test DDC controllers. (BEMS and emulation; maybe electric engineering field or ??)</span><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'><o:p></o:p></span></p><p style='margin-left:40.0pt'><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> <o:p></o:p></span></p></div><p style='margin-left:40.0pt'><span lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>For this you'll need MATLAB and a true dynamic simulation platform (i.e., it usually needs 1 sec or less time steps and true dynamic equations). Many of the U.S. controls companies have developed extensive tools for this, including Modelica/Dymola platforms. However, they do not distribute these outside their own companies. MATLAB is fast becoming a platform of choice, perhaps because most universities teach with it. There are other platforms as well, check with your local ME or EE controls Prof. Some that come to mind are HVACSiM+ (by George Walton at NIST).</span><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'><o:p></o:p></span></p><div><p style='margin-left:40.0pt'><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> <o:p></o:p></span></p><p style='margin-left:40.0pt'><span lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>5.</span><span lang=EN-US style='font-size:7.0pt;font-family:"Times New Roman","serif"'> </span><span lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>To identify the system mal-function (such as AHU) comparing between “predicted” energy and “actual” energy in real-time. (BEMS, maybe electric engineering field??)</span><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'><o:p></o:p></span></p><p style='margin-left:40.0pt'><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> <o:p></o:p></span></p></div><p style='margin-left:40.0pt'><span lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>This is a tough one. LBNL and PNNL have been working on this for some time. PNNL has their AHU fault detection program, and other programs. LBNL has their controls test bed up and running. You might also check with the Chair of ASHRAE TC 7.5 to see what the latest RPs for controls simulation. This TC has most of the knowledgable folks on it (which does not include me). </span><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'><o:p></o:p></span></p><div><p style='margin-left:40.0pt'><span lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> </span><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'><o:p></o:p></span></p><p style='margin-left:40.0pt'><span lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>6.</span><span lang=EN-US style='font-size:7.0pt;font-family:"Times New Roman","serif"'> </span><span lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>Building Simulator: which is used to training building managers or operators or learners (students) in HVAC system operation realistically (such as flight simulator)</span><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'><o:p></o:p></span></p><p style='margin-left:40.0pt'><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> <o:p></o:p></span></p></div><p style='margin-left:40.0pt'><span lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>Check out Joe Deringer's LEARNHVAC web page...just amazing...there is also other emulator work at LBNL that Phil Haves and Michael Wetter are doing.</span><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'><o:p></o:p></span></p><div><p style='margin-left:40.0pt'><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> <o:p></o:p></span></p><p style='margin-left:40.0pt'><span lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>7.</span><span lang=EN-US style='font-size:7.0pt;font-family:"Times New Roman","serif"'> </span><span lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>To </span><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>“</span><span lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>JUST</span><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>”</span><span lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> verify Building behavior (HVAC operation, energy consumption, etc) over the whole year period with different whether conditions in IWEC and TMY. (to see "what could be")</span><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'><o:p></o:p></span></p><p style='margin-left:40.0pt'><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> <o:p></o:p></span></p></div><p style='margin-left:40.0pt'><span lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>This can be done with forward models (i.e., simulation) or inverse models (i.e., ASHRAE RP1050), or a combination of both. You can also use component models such as those available from ASHRAe (HVAC01 and HVAC02 toolkit, RP865, RP827, etc).</span><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'><o:p></o:p></span></p><p style='margin-left:40.0pt'><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> <o:p></o:p></span></p><p style='margin-left:40.0pt'><span lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>There are other proprietary tools that diagnose HVAC problems, some have published results, some not. You'll find lots of papers (apx., 3 - 5,000) on our Lab's web site about our commissioning work, which includes air-side simulation as a diagnostic. </span><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'><o:p></o:p></span></p><p style='margin-left:40.0pt'><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> <o:p></o:p></span></p><p style='margin-left:40.0pt'><span lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>Hope this helps.</span><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'><o:p></o:p></span></p><p style='margin-left:40.0pt'><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> <o:p></o:p></span></p><p style='margin-left:40.0pt'><span lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>Jeff</span><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'><o:p></o:p></span></p><p><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> <o:p></o:p></span></p><div><p><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> <o:p></o:p></span></p><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";color:blue'>8=! 8=) :=) 8=) ;=) 8=) 8=( 8=) 8=() 8=) 8=| 8=) :=') 8=)8=?<br><br>Jeff S. Haberl, Ph.D.,P.E., <a href="mailto:FASHRAE..............jhaberl@tamu.edu" target="_blank">FASHRAE..............jhaberl@tamu.edu</a><br><br>Professor............................................................Office Ph: <a href="tel:979-845-6507" target="_blank">979-845-6507</a><br><br>Department of Architecture.............................Lab Ph:<a href="tel:979-845-6065" target="_blank">979-845-6065</a><br><br>Energy Systems Laboratory.............................FAX: <a href="tel:979-862-2457" target="_blank">979-862-2457</a><br><br>Texas A&M University.....................................77843-3581<br><br>College Station, Texas, USA, 77843..................URL:<a href="http://www.esl.tamu.edu" target="_blank">www.esl.tamu.edu</a><br><br>8=/ 8=) :=) 8=) ;=) 8=) 8=() 8=) :=) 8=) 8=! 8=) 8=? 8=)8=0</span><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'><o:p></o:p></span></p></div></div><div><div class=MsoNormal align=center style='text-align:center'><span style='font-family:"Times New Roman","serif"'><hr size=2 width="100%" align=center></span></div><div><p class=MsoNormal style='margin-bottom:12.0pt'><b><span style='font-family:"Tahoma","sans-serif";color:black'>From:</span></b><span style='font-family:"Tahoma","sans-serif";color:black'> <a href="mailto:bldg-sim-bounces@lists.onebuilding.org" target="_blank">bldg-sim-bounces@lists.onebuilding.org</a> [<a href="mailto:bldg-sim-bounces@lists.onebuilding.org" target="_blank">bldg-sim-bounces@lists.onebuilding.org</a>] on behalf of </span><span lang=KO style='color:black'>김덕우</span><span style='font-family:"Tahoma","sans-serif";color:black'> [<a href="mailto:deukwookim@skku.edu" target="_blank">deukwookim@skku.edu</a>]<br><b>Sent:</b> Tuesday, January 31, 2012 11:22 PM<br><b>To:</b> <a href="mailto:bldg-sim@lists.onebuilding.org" target="_blank">bldg-sim@lists.onebuilding.org</a><br><b>Subject:</b> [Bldg-sim] the use of dynamic energy simulation tool</span><span style='font-family:"Times New Roman","serif"'><o:p></o:p></span></p></div><div><div><div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US>Dear all, </span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US>I have been thinking about the use of dynamic energy simulation tool (e.g. whole building simulation tool, such as E+, ESP-r, TRNSYS, SPARK, etc). </span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US>The usage area of the tool would be classified into two, academic area and practical area.</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US>But I really want to hear your high-level opinion on the practical areas.</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US>The typical usage of energy simulation program in practice could be listed as follows (as far as I know), </span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p><p style='margin-left:38.0pt'><span lang=EN-US style='font-family:"Times New Roman","serif"'>1.</span><span lang=EN-US style='font-size:7.0pt;font-family:"Times New Roman","serif"'> </span><span lang=EN-US style='font-family:"Times New Roman","serif"'>To get energy efficiency incentives, such as LEED certificate. </span><span style='font-family:"Times New Roman","serif"'><o:p></o:p></span></p><p style='margin-left:40.0pt'><span lang=EN-US style='font-family:"Times New Roman","serif"'>2.</span><span lang=EN-US style='font-size:7.0pt;font-family:"Times New Roman","serif"'> </span><span lang=EN-US style='font-family:"Times New Roman","serif"'>To compare alternatives (wall material, window, building design) in architect point of view. </span><span style='font-family:"Times New Roman","serif"'><o:p></o:p></span></p><p style='margin-left:40.0pt'><span lang=EN-US style='font-family:"Times New Roman","serif"'>3.</span><span lang=EN-US style='font-size:7.0pt;font-family:"Times New Roman","serif"'> </span><span lang=EN-US style='font-family:"Times New Roman","serif"'>To compare alternatives (system type and configuration, COP, etc.) in mechanical engineer point of view. </span><span style='font-family:"Times New Roman","serif"'><o:p></o:p></span></p><p style='margin-left:38.0pt'><span lang=EN-US style='font-family:"Times New Roman","serif"'>4.</span><span lang=EN-US style='font-size:7.0pt;font-family:"Times New Roman","serif"'> </span><span lang=EN-US style='font-family:"Times New Roman","serif"'>To develop energy efficient control strategies and to test DDC controllers. (BEMS and emulation; maybe electric engineering field or ??)</span><span style='font-family:"Times New Roman","serif"'><o:p></o:p></span></p><p style='margin-left:40.0pt'><span lang=EN-US style='font-family:"Times New Roman","serif"'>5.</span><span lang=EN-US style='font-size:7.0pt;font-family:"Times New Roman","serif"'> </span><span lang=EN-US style='font-family:"Times New Roman","serif"'>To identify the system mal-function (such as AHU) comparing between “predicted” energy and “actual” energy in real-time. (BEMS, maybe electric engineering field??)</span><span style='font-family:"Times New Roman","serif"'><o:p></o:p></span></p><p style='margin-left:40.0pt'><span lang=EN-US style='font-family:"Times New Roman","serif"'>6.</span><span lang=EN-US style='font-size:7.0pt;font-family:"Times New Roman","serif"'> </span><span lang=EN-US style='font-family:"Times New Roman","serif"'>Building Simulator: which is used to training building managers or operators or learners (students) in HVAC system operation realistically (such as flight simulator)</span><span style='font-family:"Times New Roman","serif"'><o:p></o:p></span></p><p style='margin-left:40.0pt'><span lang=EN-US style='font-family:"Times New Roman","serif"'>7.</span><span lang=EN-US style='font-size:7.0pt;font-family:"Times New Roman","serif"'> </span><span lang=EN-US style='font-family:"Times New Roman","serif"'>To </span><span style='font-family:"Times New Roman","serif"'>“</span><span lang=EN-US style='font-family:"Times New Roman","serif"'>JUST</span><span style='font-family:"Times New Roman","serif"'>”</span><span lang=EN-US style='font-family:"Times New Roman","serif"'> verify Building behavior (HVAC operation, energy consumption, etc) over the whole year period with different whether conditions in IWEC and TMY. (to see "what could be")</span><span style='font-family:"Times New Roman","serif"'><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US>I think that the large portion of usage would be #1. </span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US>But, the problem have been arisen due to the uncertainties and </span><span lang=KO>“</span><span lang=EN-US>too many</span><span lang=KO>”</span><span lang=EN-US> required input values of dynamic simulation tools. </span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US>As far as I know in South Korea, many people say </span><span lang=KO>“</span><span lang=EN-US>these tools are not suited to assess building energy performance with acceptable speed. And there is no evidence it is helpful to achieve energy reduction actually. Something are missing. We (AEC) do not want to do full dynamic simulation. We just need a tool that is simple and faster and reliable</span><span lang=KO>”</span><span lang=EN-US>. </span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US>These days, the government is willing to move their direction which requires architects just to submit a building energy analysis report using simple ISO toolkit. </span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US>(many of my colleague agree to need of the normative performance method, ISO 13790 and DIN 18599.)</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US>Now, in this situation, we have to rethink about the purpose of doing full dynamic energy simulation (E+, ESP-r, TRNSYS, etc) with practicality in mind.</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US>I think that its usage would be more suitable for #4, #5, #6 rather than #1, #2, #3. Because #1,#2,#3 can be evaluated using ISO standards with acceptable speed and accuracy. </span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US>(but I do not know well about the usage in the fields of #4, #5, #6)</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US>I</span><span lang=KO>’</span><span lang=EN-US>m waiting your comments on my thoughts.</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US>p.s. this topic was discussed in E+ user group before, and the contents are slightly revised for better discussions. </span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:12.0pt'><span lang=EN-US>Best Regards, <br>Deuk-Woo, Kim </span><o:p></o:p></p></div></div></div></div></div></div></div><p class=MsoNormal style='margin-bottom:12.0pt'><br>_______________________________________________<br>Bldg-sim mailing list<br><a href="http://lists.onebuilding.org/listinfo.cgi/bldg-sim-onebuilding.org" target="_blank">http://lists.onebuilding.org/listinfo.cgi/bldg-sim-onebuilding.org</a><br>To unsubscribe from this mailing list send a blank message to <a href="mailto:BLDG-SIM-UNSUBSCRIBE@ONEBUILDING.ORG" target="_blank">BLDG-SIM-UNSUBSCRIBE@ONEBUILDING.ORG</a><o:p></o:p></p></div><p class=MsoNormal><o:p> </o:p></p></div></div></div></body></html>