[From nobody Tue Apr 17 07:37:46 2012 From: Shuichi Hendrickson <Shuichi.Hendrickson@erm.com> To: Kyle Keith <kkeith@icthomasson.com>, "equest-users@lists.onebuilding.org" <equest-users@lists.onebuilding.org> Subject: Re: [Equest-users] Modeling Munters ERV in Equest Thread-Topic: [Equest-users] Modeling Munters ERV in Equest Thread-Index: AQHL2duHYd+jWX/4s0KgixUVai9GVZQcp24g Sender: "equest-users-bounces@lists.onebuilding.org" <equest-users-bounces@lists.onebuilding.org> Date: Fri, 4 Mar 2011 06:28:29 +0000 Message-ID: <7F375B16C5455542AC9B6247C74FDB8602B850@grpandmbx01.mail.erm55.com> References: <8584F8AB76A172489EB23BF39C1FE978691879E5FF@ict-exmail2.ad.icthomasson.int> List-Help: <mailto:equest-users-request@lists.onebuilding.org?subject=help> List-Subscribe: <http://lists.onebuilding.org/listinfo.cgi/equest-users-onebuilding.org>, <mailto:equest-users-request@lists.onebuilding.org?subject=subscribe> List-Unsubscribe: <http://lists.onebuilding.org/options.cgi/equest-users-onebuilding.org>, <mailto:equest-users-request@lists.onebuilding.org?subject=unsubscribe> In-Reply-To: <8584F8AB76A172489EB23BF39C1FE978691879E5FF@ict-exmail2.ad.icthomasson.int> Content-Language: en-US X-MS-Has-Attach: yes X-Auto-Response-Suppress: All X-MS-TNEF-Correlator: Content-Type: multipart/mixed; boundary="_006_7F375B16C5455542AC9B6247C74FDB8602B850grpandmbx01mailer_" MIME-Version: 1.0 --_006_7F375B16C5455542AC9B6247C74FDB8602B850grpandmbx01mailer_ Content-Type: multipart/related; boundary="_005_7F375B16C5455542AC9B6247C74FDB8602B850grpandmbx01mailer_"; type="multipart/alternative" --_005_7F375B16C5455542AC9B6247C74FDB8602B850grpandmbx01mailer_ Content-Type: multipart/alternative; boundary="_000_7F375B16C5455542AC9B6247C74FDB8602B850grpandmbx01mailer_" --_000_7F375B16C5455542AC9B6247C74FDB8602B850grpandmbx01mailer_ Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Kyle, Im not familiar with Munters, but Im modelling a similar type of system usi= ng a Daikin Desica ERV here in Japan. The difference being that rather than= an enthalpy wheel, the Desica has a multi-chamber crossflow HX with solid = desiccant section. Rather than preheating exhaust air to regenerate the des= iccant, the hot gas coils are actually imbedded in the desiccant for direct= contact heating. There's a control damper that switches air flow from betw= een the usable desiccant and desiccant undergoing regeneration sections. I don't know of anyway to "accurately" model this system, but I am attempti= ng to get a decent estimate given the limitations of the software. I doubt = this is the magic bullet, but I'll explain what I'm doing: I think you have to use the OA from system command to pull this off. I set= up a dummy zone with a CAV PSZ heat pump unit with solid desiccant pre tre= at and heat recovery. Make sure to get your supply temp dialled in, latent/= sensible cooling capacity of your coils and don't double count your fan pow= er. Set OA to 100% and your RH setpoint. The "waste heat from compressor" issue is something that has driven me nuts= for awhile since there appears to be no way to recover heat off the compre= ssor for a heat pump in eQuest. Also, you need to reconcile if this is alwa= ys going to be waste heat in the sense that will the heat pump ever operate= primarily to regenerate desiccant or will it always be cooling first. Bas= ically I have come to 2 options 1) Assign gas hydronic for regeneration. Define submeters for heat pu= mp check your btuh hourly demand for gas and compare with hourly heat pump = load. My assumption is that as long as the cooling load on the unit is grea= ter than btus required for regeneration then regeneration is always waste h= eat and can be discounted, i.e. ignore the gas usage in your result reporti= ng. 2) This something that I am still toying with but it seems to work in= principal. Build an air cooled heat pump chiller with compressor heat reco= very (compressor heat recovery only seems to be available for chillers in e= Quest). Assign the PSZ as a chilled water system and assign the desiccant r= egeneration to be hotwater off of your chiller. Discount and water pump ene= rgy for your water loops and make sure your performance curves are dialled = into mimic your heat pump. I would be interested to hear if anyone has tried anything similar or has c= omments on the above. Cheers Shuichi Hendrickson Environmental Engineer, LEED AP ERM Japan The Landmark Tower Yokohama 19F 2-2-1-1, Minatomirai, Nishi-ku Yokohama, 220-8119, Japan T:+81(0)45-640-3780 F:+81(0)45-640-3781 shuichi.hendrickson@erm.com<mailto:shuichi.hendrickson@erm.com> www.erm.com<http://www.erm.com/> Ranked No1 All-Environmental Firm: ENR Magazine (2004, 2005, 2006, 2007) Environmental Adviser of the Year: Acquisitions Monthly (2005, 2006, 2008) * Please consider the environment before printing this email _____ From: Kyle Keith [mailto:kkeith@icthomasson.com] Sent: Friday, March 04, 2011 1:41 AM To: equest-users@lists.onebuilding.org Subject: [Equest-users] Modeling Munters ERV in Equest The Munters unit I am using is the Drycool Dehumidification System. It is = a 100% OA unit that I am using to feed several water source heat pumps room= neutral air thus lowering the load on the heat pumps. Outside air enters = the Munters unit and passes through the top half of an Enthalpy wheel. Ret= urn air from the space passes through the bottom of the wheel exchanging he= at from one stream to the other. The outside air is then pre-cooled with a= DX coil then passes through a desiccant wheel. The DH wheel is regenerate= d with the same return air stream as before after is has passes through a r= ow of coils with heat from the compressors. The supply air is now 76=B0 33= % RH. That air is then ducted to return plenums attached to each heat pump= . I know that I can use the "Outside air from system" option to supply the ai= r to the heat pumps but I have yet to find a way to accurately model this u= nit, specifically the enthalpy wheel's position in the system and the desic= cant wheel's regeneration source (waste heat from the compressor). Admitte= dly I a new to equest but I have spent a considerable amount of time on the= conundrum. Any help would be greatly appreciated. Kyle B. Keith Mechanical I. C. Thomasson Associates, Inc. 2950 Kraft Dr. Suite 500 Nashville, TN 37204 Phone: (615) 346-3498 Fax: (615) 346-3550 Email: kkeith@icthomasson.com<mailto:kkeith@icthomasson.com> _____ This electronic mail message may contain information which is (a) LEGALLY P= RIVILEGED, PROPRIETARY IN NATURE, OR OTHERWISE PROTECTED BY LAW FROM DISCLO= SURE, and (b) intended only for the use of the Addressee (s) names herein. = If you are not the Addressee (s), or the person responsible for delivering = this to the Addressee (s), you are hereby notified that reading, copying, o= r distributing this message is prohibited. If you have received this electr= onic mail message in error, please contact us immediately and take the step= s necessary to delete the message completely from your computer system. Tha= nk you. Please visit ERM's web site: http://www.erm.com --_000_7F375B16C5455542AC9B6247C74FDB8602B850grpandmbx01mailer_ Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable <html> <head> <meta http-equiv=3D"Content-Type" content=3D"text/html; charset=3Diso-8859-= 1"> <style> <!-- @font-face {font-family:"MS Mincho"} @font-face {font-family:"MS Gothic"} @font-face {font-family:Century} @font-face {font-family:Tahoma} @font-face {font-family:"MS PGothic"} @font-face {font-family:"Book Antiqua"} @font-face {font-family:Webdings} @font-face {font-family:"MS Mincho"} @font-face {font-family:"MS Gothic"} @font-face {font-family:"MS PGothic"} p.MsoNormal, li.MsoNormal, div.MsoNormal {margin:0mm; margin-bottom:.0001pt; font-size:12.0pt; font-family:"Times New Roman"} a:link, span.MsoHyperlink {color:blue; text-decoration:underline} a:visited, span.MsoHyperlinkFollowed {color:purple; text-decoration:underline} span.EmailStyle17 {font-family:Arial; color:windowtext} span.EmailStyle18 {font-family:Arial; color:navy} @page Section1 {margin:72.0pt 90.0pt 72.0pt 90.0pt} div.Section1 {} ol {margin-bottom:0mm} ul {margin-bottom:0mm} --> </style> </head> <body lang=3D"EN-AU" link=3D"blue" vlink=3D"purple"> <div class=3D"Section1"> <p class=3D"MsoNormal"><font size=3D"2" color=3D"navy" face=3D"Arial"><span= style=3D"font-size:10.0pt; font-family:Arial; color:navy">Kyle,</span></fo= nt></p> <p class=3D"MsoNormal"><font size=3D"2" color=3D"navy" face=3D"Arial"><span= style=3D"font-size:10.0pt; font-family:Arial; color:navy"> </span></f= ont></p> <p class=3D"MsoNormal"><font size=3D"2" color=3D"navy" face=3D"Arial"><span= style=3D"font-size:10.0pt; font-family:Arial; color:navy">Im not familiar = with Munters, but Im modelling a similar type of system using a Daikin Desi= ca ERV here in Japan. The difference being that rather than an enthalpy wheel, the Desica has a multi-chamber crossfl= ow HX with solid desiccant section. Rather than preheating exhaust air to r= egenerate the desiccant, the hot gas coils are actually imbedded in the des= iccant for direct contact heating. There’s a control damper that switches air flow from between the usa= ble desiccant and desiccant undergoing regeneration sections.</span></font>= </p> <p class=3D"MsoNormal"><font size=3D"2" color=3D"navy" face=3D"Arial"><span= style=3D"font-size:10.0pt; font-family:Arial; color:navy"> </span></f= ont></p> <p class=3D"MsoNormal"><font size=3D"2" color=3D"navy" face=3D"Arial"><span= style=3D"font-size:10.0pt; font-family:Arial; color:navy">I don’t kn= ow of anyway to “accurately” model this system, but I am attemp= ting to get a decent estimate given the limitations of the software. I doubt this is the magic bullet, but I’ll explain what I’m do= ing:</span></font></p> <p class=3D"MsoNormal"><font size=3D"2" color=3D"navy" face=3D"Arial"><span= style=3D"font-size:10.0pt; font-family:Arial; color:navy"> </span></f= ont></p> <p class=3D"MsoNormal"><font size=3D"2" color=3D"navy" face=3D"Arial"><span= style=3D"font-size:10.0pt; font-family:Arial; color:navy">I think you have= to use the OA from system command to pull this off.  I set up a dummy= zone with a CAV PSZ heat pump unit with solid desiccant pre treat and heat recovery. Make sure to get your supply temp d= ialled in, latent/sensible cooling capacity of your coils and don’t d= ouble count your fan power. Set OA to 100% and your RH setpoint.</span></fo= nt></p> <p class=3D"MsoNormal"><font size=3D"2" color=3D"navy" face=3D"Arial"><span= style=3D"font-size:10.0pt; font-family:Arial; color:navy"> </span></f= ont></p> <p class=3D"MsoNormal"><font size=3D"2" color=3D"navy" face=3D"Arial"><span= style=3D"font-size:10.0pt; font-family:Arial; color:navy">The “waste= heat from compressor” issue is something that has driven me nuts for= awhile since there appears to be no way to recover heat off the compressor for a heat pump in eQuest. Also, you need to reconcile = if this is always going to be waste heat in the sense that will the heat pu= mp ever operate primarily to regenerate desiccant or will it always be cool= ing first.  Basically I have come to 2 options</span></font></p> <p class=3D"MsoNormal"><font size=3D"2" color=3D"navy" face=3D"Arial"><span= style=3D"font-size:10.0pt; font-family:Arial; color:navy"> </span></f= ont></p> <p class=3D"MsoNormal" style=3D"margin-left:36.0pt; text-indent:-18.0pt"><f= ont size=3D"2" color=3D"navy" face=3D"Arial"><span style=3D"font-size:10.0p= t; font-family:Arial; color:navy"><span style=3D"">1)<font size=3D"1" face= =3D"Times New Roman"><span style=3D"font:7.0pt "Times New Roman""= >       </span></font></span></span></font><font size=3D"2" color=3D"navy" face=3D"= Arial"><span style=3D"font-size:10.0pt; font-family:Arial; color:navy">Assi= gn gas hydronic for regeneration. Define submeters for heat pump check your= btuh hourly demand for gas and compare with hourly heat pump load. My assumption is that as long as the cooling l= oad on the unit is greater than btus required for regeneration then regener= ation is always waste heat and can be discounted, i.e. ignore the gas usage= in your result reporting.</span></font></p> <p class=3D"MsoNormal" style=3D"margin-left:36.0pt; text-indent:-18.0pt"><f= ont size=3D"2" color=3D"navy" face=3D"Arial"><span style=3D"font-size:10.0p= t; font-family:Arial; color:navy"><span style=3D"">2)<font size=3D"1" face= =3D"Times New Roman"><span style=3D"font:7.0pt "Times New Roman""= >       </span></font></span></span></font><font size=3D"2" color=3D"navy" face=3D"= Arial"><span style=3D"font-size:10.0pt; font-family:Arial; color:navy">This= something that I am still toying with but it seems to work in principal. B= uild an air cooled heat pump chiller with compressor heat recovery (compressor heat recovery only seems to be availa= ble for chillers in eQuest). Assign the PSZ as a chilled water system and a= ssign the desiccant regeneration to be hotwater off of your chiller. Discou= nt and water pump energy for your water loops and make sure your performance curves are dialled into mimic y= our heat pump.</span></font></p> <p class=3D"MsoNormal"><font size=3D"2" color=3D"navy" face=3D"Arial"><span= style=3D"font-size:10.0pt; font-family:Arial; color:navy"> </span></f= ont></p> <p class=3D"MsoNormal"><font size=3D"2" color=3D"navy" face=3D"Arial"><span= style=3D"font-size:10.0pt; font-family:Arial; color:navy">I would be inter= ested to hear if anyone has tried anything similar or has comments on the a= bove.</span></font></p> <p class=3D"MsoNormal"><font size=3D"2" color=3D"navy" face=3D"Arial"><span= style=3D"font-size:10.0pt; font-family:Arial; color:navy"> </span></f= ont></p> <p class=3D"MsoNormal"><font size=3D"2" color=3D"navy" face=3D"Arial"><span= style=3D"font-size:10.0pt; font-family:Arial; color:navy">Cheers</span></f= ont></p> <p class=3D"MsoNormal"><font size=3D"2" color=3D"navy" face=3D"Arial"><span= style=3D"font-size:10.0pt; font-family:Arial; color:navy"> </span></f= ont></p> <p class=3D"MsoNormal" style=3D"text-align:justify; text-justify:inter-ideo= graph; layout-grid-mode:char"> <b><font size=3D"2" color=3D"gray" face=3D"Book Antiqua"><span lang=3D"EN-G= B" style=3D"font-size:10.0pt; font-family:"Book Antiqua"; color:g= ray; font-weight:bold">Shuichi Hendrickson</span></font></b><font size=3D"2= " color=3D"black" face=3D"Arial"><span lang=3D"EN-GB" style=3D"font-size:10= .0pt; font-family:Arial; color:black"></span></font></p> <p class=3D"MsoNormal" style=3D"text-align:justify; text-justify:inter-ideo= graph; layout-grid-mode:char"> <font size=3D"2" color=3D"gray" face=3D"Book Antiqua"><span lang=3D"EN-GB" = style=3D"font-size:10.0pt; font-family:"Book Antiqua"; color:gray= ">Environmental Engineer, LEED AP</span></font><font size=3D"2" color=3D"bl= ack" face=3D"Arial"><span lang=3D"EN-GB" style=3D"font-size:10.0pt; font-fa= mily:Arial; color:black"></span></font></p> <p class=3D"MsoNormal" style=3D"text-align:justify; text-justify:inter-ideo= graph; layout-grid-mode:char"> <font size=3D"2" color=3D"black" face=3D"Arial"><span lang=3D"EN-GB" style= =3D"font-size:10.0pt; font-family:Arial; color:black"><br> </span></font><b><font size=3D"2" color=3D"gray" face=3D"Book Antiqua"><spa= n lang=3D"EN-GB" style=3D"font-size:10.0pt; font-family:"Book Antiqua&= quot;; color:gray; font-weight:bold">ERM Japan</span></font></b><font size= =3D"2" color=3D"black" face=3D"Arial"><span lang=3D"EN-GB" style=3D"font-si= ze:10.0pt; font-family:Arial; color:black"></span></font></p> <p class=3D"MsoNormal" style=3D"text-align:justify; text-justify:inter-ideo= graph; layout-grid-mode:char"> <font size=3D"2" color=3D"gray" face=3D"Book Antiqua"><span lang=3D"EN-GB" = style=3D"font-size:10.0pt; font-family:"Book Antiqua"; color:gray= ">The Landmark Tower </span></font><font size=3D"2" color=3D"black" face=3D"Arial"><span lang=3D= "EN-GB" style=3D"font-size:10.0pt; font-family:Arial; color:black"></span><= /font></p> <p class=3D"MsoNormal" style=3D"text-align:justify; 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color:gray">Y= okohama, 220-8119, Japan</span></font><font size=3D"2" face=3D"Century"><sp= an lang=3D"PT-BR" style=3D"font-size:10.5pt; font-family:Century"></span></= font></p> <p class=3D"MsoNormal" style=3D"text-align:justify; text-justify:inter-ideo= graph; layout-grid-mode:char"> <font size=3D"2" color=3D"black" face=3D"Arial"><span lang=3D"DE" style=3D"= font-size:10.0pt; font-family:Arial; color:black"><br> </span></font><font size=3D"2" color=3D"gray" face=3D"Book Antiqua"><span l= ang=3D"DE" style=3D"font-size:10.0pt; font-family:"Book Antiqua";= color:gray">T:+81(0)45-640-3780 <br> F:+81(0)45-640-3781<br> </span></font><font size=3D"2" color=3D"black" face=3D"Arial"><span lang=3D= "EN-GB" style=3D"font-size:10.0pt; font-family:Arial; color:black"><a href= =3D"mailto:shuichi.hendrickson@erm.com" title=3D"mailto:shuichi.hendrickson= @erm.com mailto:first.lastnamemasashi.hishiyama@erm.com mailto:first.lastname@erm.com"><span lang=3D"DE">shuichi.hendrickson@erm.co= m</span></a></span></font><font size=3D"2" color=3D"black" face=3D"Arial"><= span lang=3D"DE" style=3D"font-size:10.0pt; font-family:Arial; color:black"= > <br> </span></font><font size=3D"2" color=3D"black" face=3D"Arial"><span lang=3D= "EN-GB" style=3D"font-size:10.0pt; font-family:Arial; color:black"><a href= =3D"http://www.erm.com/" title=3D"http://www.erm.com/"><span lang=3D"DE">ww= w.erm.com</span></a> </span></font><font size=3D"2" color=3D"black" face=3D"Arial"><span lang=3D= "DE" style=3D"font-size:10.0pt; font-family:Arial; color:black"></span></fo= nt></p> <p class=3D"MsoNormal" style=3D"layout-grid-mode:char"><i><font size=3D"2" = color=3D"gray" face=3D"Book Antiqua"><span lang=3D"EN-GB" style=3D"font-siz= e:10.0pt; font-family:"Book Antiqua"; color:gray; font-style:ital= ic">Ranked No1 All-Environmental Firm: ENR Magazine (2004, 2005, 2006, 2007)<br> Environmental Adviser of the Year: Acquisitions Monthly (2005, 2006, 2008)<= /span></font></i><i><font size=3D"2" color=3D"gray" face=3D"Book Antiqua"><= span lang=3D"EN-GB" style=3D"font-size:10.5pt; font-family:"Book Antiq= ua"; color:gray; font-style:italic"></span></font></i></p> <p class=3D"MsoNormal" style=3D"text-align:justify; text-justify:inter-ideo= graph; layout-grid-mode:char"> <font size=3D"1" color=3D"teal" face=3D"Webdings"><span lang=3D"EN-US" styl= e=3D"font-size:8.0pt; font-family:Webdings; color:teal">P</span></font><fon= t size=3D"1" color=3D"teal" face=3D"ＭＳ ゴシ&#1248= 3;ク"><span lang=3D"EN-US" style=3D"font-size:8.0pt; font-family:&quo= t;MS Gothic"; color:teal"> </span></font><font size=3D"1" color=3D"teal" face=3D"Arial"><span lang=3D"= EN-US" style=3D"font-size:8.0pt; font-family:Arial; color:teal">Please cons= ider the environment before printing this email</span></font><font face=3D"= ＭＳ Ｐゴシック"><span lang=3D"EN= -US" style=3D"font-family:"MS PGothic""></span></font></p> <p class=3D"MsoNormal"><font size=3D"3" face=3D"Times New Roman"><span styl= e=3D"font-size:12.0pt"> </span></font></p> <p class=3D"MsoNormal"><font size=3D"2" color=3D"navy" face=3D"Arial"><span= style=3D"font-size:10.0pt; font-family:Arial; color:navy"> </span></f= ont></p> <p class=3D"MsoNormal"><font size=3D"2" color=3D"navy" face=3D"Arial"><span= style=3D"font-size:10.0pt; font-family:Arial; color:navy"> </span></f= ont></p> <div> <div class=3D"MsoNormal" align=3D"center" style=3D"text-align:center"><font= size=3D"3" face=3D"Times New Roman"><span lang=3D"EN-US" style=3D"font-siz= e:12.0pt"> <hr size=3D"2" width=3D"100%" align=3D"center" tabindex=3D"-1"> </span></font></div> <p class=3D"MsoNormal"><b><font size=3D"2" face=3D"Tahoma"><span lang=3D"EN= -US" style=3D"font-size:10.0pt; font-family:Tahoma; font-weight:bold">From:= </span></font></b><font size=3D"2" face=3D"Tahoma"><span lang=3D"EN-US" sty= le=3D"font-size:10.0pt; font-family:Tahoma"> Kyle Keith [mailto:kkeith@icthomasson.com] <br> <b><span style=3D"font-weight:bold">Sent:</span></b> Friday, March 04, 2011= 1:41 AM<br> <b><span style=3D"font-weight:bold">To:</span></b> equest-users@lists.onebu= ilding.org<br> <b><span style=3D"font-weight:bold">Subject:</span></b> [Equest-users] Mode= ling Munters ERV in Equest</span></font><span lang=3D"EN-US"></span></p> </div> <p class=3D"MsoNormal"><font size=3D"3" face=3D"Times New Roman"><span styl= e=3D"font-size:12.0pt"> </span></font></p> <p class=3D"MsoNormal"><font size=3D"2" face=3D"Arial"><span lang=3D"EN-US"= style=3D"font-size:10.0pt; font-family:Arial">The Munters unit I am using = is the Drycool Dehumidification System.  It is a 100% OA unit that I a= m using to feed several water source heat pumps room neutral air thus lowering the load on the heat pumps.  Outside a= ir enters the Munters unit and passes through the top half of an Enthalpy w= heel.  Return air from the space passes through the bottom of the whee= l exchanging heat from one stream to the other.  The outside air is then pre-cooled with a DX coil then passes through a de= siccant wheel.  The DH wheel is regenerated with the same return air s= tream as before after is has passes through a row of coils with heat from t= he compressors.  The supply air is now 76=B0 33% RH.  That air is then ducted to return plenums attached to = each heat pump.  </span></font></p> <p class=3D"MsoNormal"><font size=3D"2" face=3D"Arial"><span lang=3D"EN-US"= style=3D"font-size:10.0pt; font-family:Arial"> </span></font></p> <p class=3D"MsoNormal"><font size=3D"2" face=3D"Arial"><span lang=3D"EN-US"= style=3D"font-size:10.0pt; font-family:Arial">I know that I can use the &#= 8220;Outside air from system” option to supply the air to the heat pu= mps but I have yet to find a way to accurately model this unit, specifically the enthalpy wheel’s position in the system and t= he desiccant wheel’s regeneration source (waste heat from the compres= sor).  Admittedly I a new to equest but I have spent a considerable am= ount of time on the conundrum.  Any help would be greatly appreciated.</span></font></p> <p class=3D"MsoNormal"><font size=3D"2" face=3D"Arial"><span lang=3D"EN-US"= style=3D"font-size:10.0pt; font-family:Arial"> </span></font></p> <p class=3D"MsoNormal"><font size=3D"2" face=3D"Arial"><span lang=3D"EN-US"= style=3D"font-size:10.0pt; font-family:Arial">Kyle B. Keith</span></font><= span lang=3D"EN-US"></span></p> <p class=3D"MsoNormal"><font size=3D"2" face=3D"Arial"><span lang=3D"EN-US"= style=3D"font-size:10.0pt; font-family:Arial">Mechanical</span></font><spa= n lang=3D"EN-US"></span></p> <p class=3D"MsoNormal"><font size=3D"2" face=3D"Arial"><span lang=3D"EN-US"= style=3D"font-size:10.0pt; font-family:Arial">I. C. Thomasson Associates, = Inc.</span></font><span lang=3D"EN-US"></span></p> <p class=3D"MsoNormal"><font size=3D"2" face=3D"Arial"><span lang=3D"EN-US"= style=3D"font-size:10.0pt; font-family:Arial">2950 Kraft Dr. Suite 500</sp= an></font><span lang=3D"EN-US"></span></p> <p class=3D"MsoNormal"><font size=3D"2" face=3D"Arial"><span lang=3D"EN-US"= style=3D"font-size:10.0pt; font-family:Arial">Nashville</span></font><font= size=3D"2" face=3D"Arial"><span lang=3D"EN-US" style=3D"font-size:10.0pt; = font-family:Arial">, TN 37204</span></font><span lang=3D"EN-US"></span></p> <p class=3D"MsoNormal"><font size=3D"2" face=3D"Arial"><span lang=3D"EN-US"= style=3D"font-size:10.0pt; font-family:Arial">Phone: (615) 346-3498</span>= </font><span lang=3D"EN-US"></span></p> <p class=3D"MsoNormal"><font size=3D"2" face=3D"Arial"><span lang=3D"EN-US"= style=3D"font-size:10.0pt; font-family:Arial">Fax: (615) 346-3550</span></= font><span lang=3D"EN-US"></span></p> <p class=3D"MsoNormal"><font size=3D"2" face=3D"Arial"><span lang=3D"EN-US"= style=3D"font-size:10.0pt; font-family:Arial">Email: <a href=3D"mailto:kkeith@icthomasson.com">kkeith@icthomasson.com</a></span>= </font></p> <p class=3D"MsoNormal"><font size=3D"2" face=3D"Arial"><span lang=3D"EN-US"= style=3D"font-size:10.0pt; font-family:Arial"><img border=3D"0" width=3D"2= 37" height=3D"114" id=3D"_x0000_i1025" src=3D"cid:image001.jpg@01CBDA80.CE8= B5D20"></span></font><span lang=3D"EN-US"></span></p> <p class=3D"MsoNormal"><font size=3D"3" face=3D"Times New Roman"><span lang= =3D"EN-US" style=3D"font-size:12.0pt"> </span></font></p> <p class=3D"MsoNormal"><font size=3D"3" face=3D"Times New Roman"><span lang= =3D"EN-US" style=3D"font-size:12.0pt"> </span></font></p> </div> <br> <hr> <font face=3D"Arial" color=3D"Gray" size=3D"1"><br> This electronic mail message may contain information which is (a) LEGALLY P= RIVILEGED, PROPRIETARY IN NATURE, OR OTHERWISE PROTECTED BY LAW FROM DISCLO= SURE, and (b) intended only for the use of the Addressee (s) names herein. = If you are not the Addressee (s), or the person responsible for delivering this to the Addressee (s), you ar= e hereby notified that reading, copying, or distributing this message is pr= ohibited. If you have received this electronic mail message in error, pleas= e contact us immediately and take the steps necessary to delete the message completely from your computer sy= stem. Thank you.<br> <br> Please visit ERM's web site: http://www.erm.com<br> </font> </body> </html> --_000_7F375B16C5455542AC9B6247C74FDB8602B850grpandmbx01mailer_-- --_005_7F375B16C5455542AC9B6247C74FDB8602B850grpandmbx01mailer_ Content-Type: image/jpeg; name="image001.jpg" Content-Description: image001.jpg Content-Disposition: inline; filename="image001.jpg"; size=6212; creation-date="Fri, 04 Mar 2011 06:28:44 GMT"; modification-date="Fri, 04 Mar 2011 06:28:44 GMT" Content-ID: <image001.jpg@01CBDA80.CE8B5D20> Content-Transfer-Encoding: base64 /9j/4AAQSkZJRgABAQEAYABgAAD/2wBDAAgGBgcGBQgHBwcJCQgKDBQNDAsLDBkSEw8UHRofHh0a HBwgJC4nICIsIxwcKDcpLDAxNDQ0Hyc5PTgyPC4zNDL/2wBDAQkJCQwLDBgNDRgyIRwhMjIyMjIy MjIyMjIyMjIyMjIyMjIyMjIyMjIyMjIyMjIyMjIyMjIyMjIyMjIyMjIyMjL/wAARCAByAO0DASIA AhEBAxEB/8QAHwAAAQUBAQEBAQEAAAAAAAAAAAECAwQFBgcICQoL/8QAtRAAAgEDAwIEAwUFBAQA AAF9AQIDAAQRBRIhMUEGE1FhByJxFDKBkaEII0KxwRVS0fAkM2JyggkKFhcYGRolJicoKSo0NTY3 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