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</o:shapelayout></xml><![endif]--></head><body lang=KO link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span lang=EN-US>Dear all, <o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><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). <o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>The usage area of the tool would be classified into two, academic area and practical area.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>But I really want to hear your high-level opinion on the practical areas.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>The typical usage of energy simulation program in practice could be listed as follows (as far as I know), <o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoListParagraph style='margin-left:38.0pt;mso-para-margin-left:0gd;text-indent:-18.0pt;mso-list:l0 level1 lfo2'><![if !supportLists]><span lang=EN-US><span style='mso-list:Ignore'>1.<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span lang=EN-US>To get energy efficiency incentives, such as LEED</span><span lang=EN-US> certificate</span><span lang=EN-US>. <o:p></o:p></span></p><p class=MsoListParagraph style='margin-left:40.0pt;mso-para-margin-left:0gd;text-indent:-18.0pt;mso-list:l0 level1 lfo2'><![if !supportLists]><span lang=EN-US><span style='mso-list:Ignore'>2.<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span lang=EN-US>To compare alternatives (wall material, window, building design) in architect point of view. <o:p></o:p></span></p><p class=MsoListParagraph style='margin-left:40.0pt;mso-para-margin-left:0gd;text-indent:-18.0pt;mso-list:l0 level1 lfo2'><![if !supportLists]><span lang=EN-US><span style='mso-list:Ignore'>3.<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span lang=EN-US>To compare alternatives (system type and configuration, COP, etc.) in mechanical engineer point of view. <o:p></o:p></span></p><p class=MsoListParagraph style='margin-left:38.0pt;mso-para-margin-left:0gd;text-indent:-18.0pt;mso-list:l0 level1 lfo2'><![if !supportLists]><span lang=EN-US><span style='mso-list:Ignore'>4.<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span lang=EN-US>To develop energy efficient control strategies and to test DDC controllers. (BEMS and emulation; maybe electric engineering field or ??)<o:p></o:p></span></p><p class=MsoListParagraph style='margin-left:40.0pt;mso-para-margin-left:0gd;text-indent:-18.0pt;mso-list:l0 level1 lfo2'><![if !supportLists]><span lang=EN-US><span style='mso-list:Ignore'>5.<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span lang=EN-US>To </span><span lang=EN-US>identify the system mal-function (such as AHU) comparing </span><span lang=EN-US>between ¡°predicted¡± energy and ¡°actual¡± energy</span><span lang=EN-US> in real-time</span><span lang=EN-US>. </span><span lang=EN-US>(BEMS, maybe electric engineering field??)<o:p></o:p></span></p><p class=MsoListParagraph style='margin-left:40.0pt;mso-para-margin-left:0gd;text-indent:-18.0pt;mso-list:l0 level1 lfo2'><![if !supportLists]><span lang=EN-US><span style='mso-list:Ignore'>6.<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span lang=EN-US>Building Simulator: which is used to training building managers or operators or learners (students) in HVAC system operation realistically (such as flight simulator)<o:p></o:p></span></p><p class=MsoListParagraph style='margin-left:40.0pt;mso-para-margin-left:0gd;text-indent:-18.0pt;mso-list:l0 level1 lfo2'><![if !supportLists]><span lang=EN-US><span style='mso-list:Ignore'>7.<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span lang=EN-US>To </span>¡°<span lang=EN-US>JUST</span>¡±<span lang=EN-US> verify Building behavior (</span><span lang=EN-US>HVAC operation</span><span lang=EN-US>, energy consumption, etc)</span><span lang=EN-US> over the whole year period with different whether conditions in IWEC and TMY. </span><span lang=EN-US>(to see "what could be")<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>I think that the large portion of usage would be #1. <o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>But, the problem have been arisen due to the uncertainties and </span>¡°<span lang=EN-US>too many</span>¡±<span lang=EN-US> required input values of dynamic simulation tools. <o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>As far as I know in South Korea, many people say </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=EN-US>. <o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><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. <o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>(many of my colleague agree to need of the normative performance method, ISO 13790 and DIN 18599.)<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><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.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><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. <o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>(but I do not know well about the usage in the fields of #4, #5, #6)<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>I</span>¡¯<span lang=EN-US>m waiting your comments on my thoughts.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>p.s. this topic was discussed in E+ user group before, and the contents are slightly revised for better discussions. <o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>Best Regards, <br>Deuk-Woo, Kim <br><br><o:p></o:p></span></p></div></body></html>