<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=us-ascii">
<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: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;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:"Calibri","sans-serif";}
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.MsoAcetate, li.MsoAcetate, div.MsoAcetate
{mso-style-priority:99;
mso-style-link:"Balloon Text Char";
margin:0in;
margin-bottom:.0001pt;
font-size:8.0pt;
font-family:"Tahoma","sans-serif";}
span.BalloonTextChar
{mso-style-name:"Balloon Text Char";
mso-style-priority:99;
mso-style-link:"Balloon Text";
font-family:"Tahoma","sans-serif";}
span.EmailStyle19
{mso-style-type:personal;
font-family:"Calibri","sans-serif";
color:windowtext;}
span.EmailStyle20
{mso-style-type:personal;
font-family:"Calibri","sans-serif";
color:#1F497D;}
span.EmailStyle21
{mso-style-type:personal;
font-family:"Calibri","sans-serif";
color:#1F497D;}
span.EmailStyle22
{mso-style-type:personal-reply;
font-family:"Calibri","sans-serif";
color:#1F497D;}
.MsoChpDefault
{mso-style-type:export-only;
font-size:10.0pt;}
@page WordSection1
{size:8.5in 11.0in;
margin:1.0in 1.0in 1.0in 1.0in;}
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="EN-US" link="blue" vlink="purple">
<div class="WordSection1">
<p class="MsoNormal"><span lang="EN" style="font-size:12.0pt;font-family:"Arial","sans-serif";letter-spacing:-.75pt">From th e Cooling Load Calculations andPrinciples<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN" style="font-size:12.0pt;font-family:"Arial","sans-serif";letter-spacing:-.75pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN" style="font-size:12.0pt;font-family:"Arial","sans-serif";letter-spacing:-.75pt">"Thermal Zoning</span><span lang="EN" style="font-size:12.0pt;font-family:"Times New Roman","serif""><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN" style="font-size:12.0pt;font-family:"Arial","sans-serif"">Thermal zoning is a method of designing and controlling the HVAC system so that occupied areas can bemaintained at a different temperature than unoccupied areas using
independent setback thermostats. A zone is defined as a space or group of spaces in a building having similar heating and cooling requirementsthroughout its occupied area so that comfort conditions may be controlled by a single thermostat.When doing the cooling
load calculations, always divide the building into zones. Always estimate the buildingpeak load and individual zones airflow rate. The building peak load is used for sizing the refrigeration capacityand the individual zone loads are helpful in estimating the
airflow rates (air-handling unit capacity).In practice the corner rooms and the perimetric spaces of the building have variations in load as compared tothe interior core areas. The following facts may be noted:</span><span lang="EN" style="font-size:12.0pt;font-family:"Times New Roman","serif""><o:p></o:p></span></p>
<div>
<p class="MsoNormal"><span lang="ES-CO" style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN" style="font-family:"Arial","sans-serif"">a) The buildings are usually divided into two major zones.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN" style="font-family:"Arial","sans-serif"">•<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN" style="font-family:"Arial","sans-serif"">Exterior Zone: The area inward from the outside wall (usually 12 to 18 feet, if rooms do not line theoutside wall). The exterior zone is directly affected by outdoor conditions during
summer and winter.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN" style="font-family:"Arial","sans-serif"">•<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN" style="font-family:"Arial","sans-serif"">Interior Zone: The area contained by the external zone. The interior zone is only slightly affected byoutdoor conditions and usually has a uniform cooling.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN" style="font-family:"Arial","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN" style="font-family:"Arial","sans-serif"">b) Single-zone models shall be limited to open floor plans with perimeter walls not exceeding 40 feet inlength.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN" style="font-family:"Arial","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN" style="font-family:"Arial","sans-serif"">c) For large building footprints, assume a minimum of five zones per floor: one zone for each exposure(north, south, east & west) and an interior zone"</span><span lang="EN" style="font-size:52.5pt;font-family:"Times New Roman","serif""><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="ES-CO" style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="ES-CO" style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="ES-CO" style="color:#1F497D">Hector Lampra, P. Eng, LEED AP, CEM<o:p></o:p></span></p>
</div>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<div>
<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""> Doddi, Sai K [mailto:Sai.Doddi@hatchmott.com]
<br>
<b>Sent:</b> Tuesday, December 18, 2012 3:10 PM<br>
<b>To:</b> Hector Lamprea<br>
<b>Subject:</b> RE: HAP Cooling Load Calculation.<o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="color:#1F497D">Hector ,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"> Thanks so much for helping. If you don’t mind, I have another question.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">How do the zones work? Is zone like a block that is a group of spaces? Why would I want any more than 1 zone?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">In the classroom example in HAP, a few spaces are categorized into a zone. Why is it necessary? Couldn’t they have been just defined as separate spaces?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">I know these are too many questions.
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Any suggestions would be great.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Thanks,<br>
Sai.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<div>
<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""> Hector Lamprea
<a href="mailto:[mailto:hector.lamprea@fundyeng.com]">[mailto:hector.lamprea@fundyeng.com]</a>
<br>
<b>Sent:</b> Tuesday, December 18, 2012 10:16 AM<br>
<b>To:</b> Doddi, Sai K<br>
<b>Subject:</b> RE: HAP Cooling Load Calculation.<o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="color:#1F497D">There is a tab in the room called partitio, use this to recreate diffence in room temperarutes.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<div>
<p class="MsoNormal"><span lang="ES-CO" style="color:#1F497D">Hector Lampra, P. Eng, LEED AP, CEM<o:p></o:p></span></p>
</div>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<div>
<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"">
<a href="mailto:hap-users-bounces@lists.onebuilding.org">hap-users-bounces@lists.onebuilding.org</a>
<a href="mailto:[mailto:hap-users-bounces@lists.onebuilding.org]">[mailto:hap-users-bounces@lists.onebuilding.org]</a>
<b>On Behalf Of </b>Doddi, Sai K<br>
<b>Sent:</b> Tuesday, December 18, 2012 2:09 PM<br>
<b>To:</b> <a href="mailto:hap-users@lists.onebuilding.org">hap-users@lists.onebuilding.org</a><br>
<b>Subject:</b> [Hap-users] HAP Cooling Load Calculation.<o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Hello there,<o:p></o:p></p>
<p class="MsoNormal"> I am a new HAP user currently using HAP to assess the cooling load for a train station. I am having trouble understanding conceptually how HAP handles certain cooling loads.
<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">In my case, I have two adjacent rooms, one of which is air conditioned to 68 deg F and 50% RH, and the other does not need any A/C, just ventilation. There are a few set of rooms at one end of the station and another set of rooms at the
other end of the station. Some of the rooms need A/C whereas some others don’t.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">In HAP, I haven’t been able to figure out, how to assign an order to the rooms. I would think this order is important to assess the heat transfer between the rooms correctly and correspondingly calculate the overall heat load.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">In order to estimate the heat load, I would like to have an independent a/c system for each room that needs to be airconditioned. Hence, I am using 5 CAV’s to air condition 5 spaces (rooms) and I am also using 4 CAV’s to ventilation ( not
A/C) to ventilate the 4 non-A/C rooms. Also, there are corridors and windows.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">As mentioned earlier, I haven’t been able to figure out how to arrange the rooms in an order and how to group them. In the space properties, I see a tab for Partitions. But, it allows for a maximum of 2 partitions only. I am not sure if
this is the way to specify internal walls.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">The tutorial only comes with 2 examples, that does not consider a case where the rooms are conditioned differently.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Any suggestions would be greatly appreciated.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thanks much,<o:p></o:p></p>
<p class="MsoNormal">Sai.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><u><o:p><span style="text-decoration:none"> </span></o:p></u></p>
<p class="MsoNormal">Sai Doddi <span style="font-size:9.0pt;font-family:"Verdana","sans-serif";color:#595959">
|</span><span style="font-size:9.0pt;font-family:"Verdana","sans-serif";color:blue">
</span><span style="font-size:8.0pt;font-family:"Verdana","sans-serif""><a href="mailto:sai.doddi@hatchmott.com">sai.doddi@hatchmott.com</a></span><span style="font-size:9.0pt;font-family:"Verdana","sans-serif";color:#595959"><o:p></o:p></span></p>
<p class="MsoNormal"><b><span style="font-size:9.0pt;font-family:"Verdana","sans-serif";color:#1F497D">Hatch Mott MacDonald</span></b><b><span style="font-size:9.0pt;font-family:"Verdana","sans-serif";color:blue">
</span></b><u><span style="font-size:9.0pt;font-family:"Verdana","sans-serif";color:blue"><o:p></o:p></span></u></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Verdana","sans-serif";color:#595959">111 Universal Hollywood Drive, Suite 2100,
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Verdana","sans-serif";color:#595959">Los Angeles, CA 91436<o:p></o:p></span></p>
<p class="MsoNormal"><b><span style="font-size:8.0pt;font-family:"Verdana","sans-serif";color:#595959">Tel:</span></b><b><span style="font-size:9.0pt;font-family:"Verdana","sans-serif";color:#595959">
</span></b><span style="font-size:9.0pt;font-family:"Verdana","sans-serif";color:#595959">818-736-4314
</span><b><span style="font-size:8.0pt;font-family:"Verdana","sans-serif";color:#595959">Fax:
</span></b><span style="font-size:9.0pt;font-family:"Verdana","sans-serif";color:#595959">818-506-8044<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Verdana","sans-serif";color:#595959"><a href="http://www.hatchmott.com">http://www.hatchmott.com</a><b>
</b><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.0pt;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Verdana","sans-serif";color:blue"><img border="0" width="205" height="68" id="_x0000_i1025" src="cid:image001.jpg@01CDDD32.D00F0140" alt="test.png"></span><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><u><o:p><span style="text-decoration:none"> </span></o:p></u></p>
<p class="MsoNormal">Sai Doddi <span style="font-size:9.0pt;font-family:"Verdana","sans-serif";color:#595959">
|</span><span style="font-size:9.0pt;font-family:"Verdana","sans-serif";color:blue">
</span><span style="font-size:8.0pt;font-family:"Verdana","sans-serif""><a href="mailto:sai.doddi@hatchmott.com">sai.doddi@hatchmott.com</a></span><span style="font-size:9.0pt;font-family:"Verdana","sans-serif";color:#595959"><o:p></o:p></span></p>
<p class="MsoNormal"><b><span style="font-size:9.0pt;font-family:"Verdana","sans-serif";color:#1F497D">Hatch Mott MacDonald</span></b><b><span style="font-size:9.0pt;font-family:"Verdana","sans-serif";color:blue">
</span></b><u><span style="font-size:9.0pt;font-family:"Verdana","sans-serif";color:blue"><o:p></o:p></span></u></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Verdana","sans-serif";color:#595959">111 Universal Hollywood Drive, Suite 2100,
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Verdana","sans-serif";color:#595959">Los Angeles, CA 91436<o:p></o:p></span></p>
<p class="MsoNormal"><b><span style="font-size:8.0pt;font-family:"Verdana","sans-serif";color:#595959">Tel:</span></b><b><span style="font-size:9.0pt;font-family:"Verdana","sans-serif";color:#595959">
</span></b><span style="font-size:9.0pt;font-family:"Verdana","sans-serif";color:#595959">818-736-4314
</span><b><span style="font-size:8.0pt;font-family:"Verdana","sans-serif";color:#595959">Fax:
</span></b><span style="font-size:9.0pt;font-family:"Verdana","sans-serif";color:#595959">818-506-8044<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Verdana","sans-serif";color:#595959"><a href="http://www.hatchmott.com">http://www.hatchmott.com</a><b>
</b><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.0pt;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Verdana","sans-serif";color:blue"><img border="0" width="205" height="68" id="Picture_x0020_1" src="cid:image001.jpg@01CDDD32.D00F0140" alt="test.png"></span><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman","serif""><br>
______________________________________________________________________<br>
Attention:<br>
This e-mail and any files transmitted with it from Hatch Mott MacDonald are confidential and intended solely for use of the individual or entity to whom they are addressed. If you have received this e-mail in error please immediately notify the sender.<br>
______________________________________________________________________<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman","serif""><br>
______________________________________________________________________<br>
This email has been scanned by the Symantec Email Security.cloud service.<br>
For more information please visit <a href="http://www.symanteccloud.com">http://www.symanteccloud.com</a><br>
______________________________________________________________________<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman","serif""><br>
______________________________________________________________________<br>
Attention:<br>
This e-mail and any files transmitted with it from Hatch Mott MacDonald are confidential and intended solely for use of the individual or entity to whom they are addressed. If you have received this e-mail in error please immediately notify the sender.<br>
______________________________________________________________________<o:p></o:p></span></p>
</div>
</body>
</html>