<html>
<head>
<meta content="text/html; charset=UTF-8" http-equiv="Content-Type">
</head>
<body bgcolor="#FFFFFF" text="#000000">
<p>Nick, others,</p>
<p>Your reading of the HOF is correct. As a member of TC 4.2
(Climatic Information), I remember quite well the progression of
events that led to the development of the new ASHRAE Clear Sky
Model. More than 10 years ago, the TC conducted an exercise to
look through the HOF to find where weather-related issues were
being dealt with by other TCs. This led to the design day
formulation in the Loads Calculation section of the HOF and the
realization that the so-called ASHRAE Clear Sky Model was very
antiquated, of unknown provenance, and very North America -
specific. <br>
</p>
<p>Since we had a very good solar expert in the TC (Chris Gueymard),
we eventually contracted with Chris to work with Didier Thevenard,
the contractor for the ASHRAE Design Condition tables, to create a
better Clear Sky Model based on Chris' REST2 model. The REST2
Model is a physical model that requires some 30 input parameters
that can get very arcane (Aerosol Optical Depth, Precipitable
Moisture, etc.) but is very accurate (Chris once said that NREL
has found that REST2 was within 5% of NREL's measurements, which
Chris attributed to measurement errors :-) ). <br>
</p>
<p>Anyway, Chris compiled the inputs from satellite data and ran
REST2 for the whole world, which Didier then simplified into a
2-parameter model with a Taub and Taud for each location and
month, 24 numbers in all. So now the new ASHRAE Design Day
procedure is to look up the Taub/Taud for your location, plug
those into two exponential equation, and get the hourly profiles
for GHI (global horizontal) and DNI (direct normal) by month
(although you still need to calculate the sun position in order to
get the extraterrestrial radiation, so don't try to do this in a
spreadsheet just yet). <br>
</p>
<p>However, implementing it into DOE-2.2 would be very easy, since
DOE-2 already calculates the sun position. I just don't know
whether anyone has tried to do so.</p>
<p>Joe<br>
</p>
<pre class="moz-signature" cols="90">Joe Huang
White Box Technologies, Inc.
346 Rheem Blvd., Suite 205A
Moraga CA 94556
<a class="moz-txt-link-abbreviated" href="mailto:yjhuang@whiteboxtechnologies.com">yjhuang@whiteboxtechnologies.com</a>
<a class="moz-txt-link-freetext" href="http://weather.whiteboxtechnologies.com">http://weather.whiteboxtechnologies.com</a> for simulation-ready weather data
(o) (925)388-0265
(c) (510)928-2683
"building energy simulations at your fingertips"
</pre>
<div class="moz-cite-prefix">On 12/2/2016 11:18 AM, Nicholas Caton
wrote:<br>
</div>
<blockquote
cite="mid:AMXPR04MB2471CDA131958218D53A29CB68E0@AMXPR04MB247.eurprd04.prod.outlook.com"
type="cite">
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<meta name="Generator" content="Microsoft Word 15 (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:SimSun;
panose-1:2 1 6 0 3 1 1 1 1 1;}
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:Consolas;
panose-1:2 11 6 9 2 2 4 3 2 4;}
@font-face
{font-family:Verdana;
panose-1:2 11 6 4 3 5 4 4 2 4;}
@font-face
{font-family:"Microsoft YaHei";
panose-1:2 11 5 3 2 2 4 2 2 4;}
@font-face
{font-family:"\@SimSun";
panose-1:2 1 6 0 3 1 1 1 1 1;}
@font-face
{font-family:"\@Microsoft YaHei";
panose-1:2 11 5 3 2 2 4 2 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:"Calibri",sans-serif;
color:black;
mso-fareast-language:ZH-CN;}
p.MsoBodyText, li.MsoBodyText, div.MsoBodyText
{mso-style-priority:99;
mso-style-link:"Body Text Char";
mso-margin-top-alt:auto;
margin-right:0in;
mso-margin-bottom-alt:auto;
margin-left:0in;
font-size:11.0pt;
font-family:"Calibri",sans-serif;
color:black;
mso-fareast-language:ZH-CN;}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:#0563C1;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:#954F72;
text-decoration:underline;}
p
{mso-style-priority:99;
mso-margin-top-alt:auto;
margin-right:0in;
mso-margin-bottom-alt:auto;
margin-left:0in;
font-size:11.0pt;
font-family:"Calibri",sans-serif;
color:black;
mso-fareast-language:ZH-CN;}
pre
{mso-style-priority:99;
mso-style-link:"HTML Preformatted Char";
margin:0in;
margin-bottom:.0001pt;
font-size:10.0pt;
font-family:"Courier New";
color:black;
mso-fareast-language:ZH-CN;}
p.MsoListParagraph, li.MsoListParagraph, div.MsoListParagraph
{mso-style-priority:34;
margin-top:0in;
margin-right:0in;
margin-bottom:0in;
margin-left:.5in;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:"Calibri",sans-serif;
color:black;
mso-fareast-language:ZH-CN;}
p.msonormal0, li.msonormal0, div.msonormal0
{mso-style-name:msonormal;
mso-style-priority:99;
mso-margin-top-alt:auto;
margin-right:0in;
mso-margin-bottom-alt:auto;
margin-left:0in;
font-size:11.0pt;
font-family:"Calibri",sans-serif;
color:black;
mso-fareast-language:ZH-CN;}
span.BodyTextChar
{mso-style-name:"Body Text Char";
mso-style-priority:99;
mso-style-link:"Body Text";
font-family:SimSun;
mso-fareast-language:ZH-CN;}
span.d2hbreadcrumbslinkseparator
{mso-style-name:d2h_breadcrumbslinkseparator;}
p.exampleinput, li.exampleinput, div.exampleinput
{mso-style-name:exampleinput;
mso-margin-top-alt:auto;
margin-right:0in;
mso-margin-bottom-alt:auto;
margin-left:0in;
font-size:11.0pt;
font-family:"Calibri",sans-serif;
color:black;
mso-fareast-language:ZH-CN;}
p.doe-2input, li.doe-2input, div.doe-2input
{mso-style-name:doe-2input;
mso-margin-top-alt:auto;
margin-right:0in;
mso-margin-bottom-alt:auto;
margin-left:0in;
font-size:11.0pt;
font-family:"Calibri",sans-serif;
color:black;
mso-fareast-language:ZH-CN;}
span.HTMLPreformattedChar
{mso-style-name:"HTML Preformatted Char";
mso-style-priority:99;
mso-style-link:"HTML Preformatted";
font-family:Consolas;
color:black;}
span.EmailStyle27
{mso-style-type:personal;
font-family:"Calibri",sans-serif;
color:windowtext;}
span.EmailStyle28
{mso-style-type:personal;
font-family:"Calibri",sans-serif;
color:#1F497D;}
span.EmailStyle29
{mso-style-type:personal-reply;
font-family:"Calibri",sans-serif;
color:windowtext;}
.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]-->
<div class="WordSection1">
<p class="MsoNormal"><span
style="color:windowtext;mso-fareast-language:EN-US">I think
the “transition from doe2.1e” document may be congruous
actually with Joe’s original suggestion… It does reinforce
that we’re on the right track to consider CLIMATE as
associated with determing solar pathing for design days.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="color:windowtext;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="color:windowtext;mso-fareast-language:EN-US">I’ve
gone digging into Fundamentals 2005 and, googling after
citations therein to try and lock in on this
“Climate/Latitude” binning for solar angles. Found nothing
direct in the Handbook to clarify but it does appear this
(older) “ASHRAE clear sky model” was in fact limited to the
Northern hemisphere (which may lead to why there’s seemingly
nothing presently in DESIGN-DAY inputs to directly inform
North vs South hemispheres… it seems a distinct possibility
eQUEST makes a separate check of weather file latitude or
other solar inputs however to account for this). <o:p></o:p></span></p>
<p class="MsoNormal"><span
style="color:windowtext;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="color:windowtext;mso-fareast-language:EN-US">I’ve
come across many papers/names associated with evaluation and
improvement of that clear sky model. The “midlatitude” term
particularly pops up in a few such abstracts / summaries for
papers I can’t readily access, so I suspect doe2.2 initially
was following one such extension to the pre-2006 ASHRAE
clear sky model.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="color:windowtext;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="color:windowtext;mso-fareast-language:EN-US">~Nick<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="color:windowtext;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<div>
<p class="MsoNormal"><span
style="font-family:"Arial",sans-serif;color:#3A7A46;mso-fareast-language:EN-US"><img
style="width:7.5208in;height:.0937in" id="_x0000_i1036"
src="cid:part1.FC385C34.9237CDDF@whiteboxtechnologies.com" height="9"
width="722"><o:p></o:p></span></p>
<p class="MsoNormal"><b><span
style="font-family:"Arial",sans-serif;color:#3A7A46;mso-fareast-language:EN-US">Nick
Caton, P.E., BEMP</span></b><span
style="color:#3A7A46;mso-fareast-language:EN-US"><o:p></o:p></span></p>
<table class="MsoNormalTable"
style="width:543.0pt;border-collapse:collapse" border="0"
cellpadding="0" cellspacing="0" width="724">
<tbody>
<tr>
<td style="width:172.3pt;padding:0in 0in 0in 0in"
valign="top" width="230">
<p class="MsoNormal"><span
style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#626469;mso-fareast-language:EN-US">
Senior Energy Engineer</span><span
style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><br>
</span><span
style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#626469;mso-fareast-language:EN-US">
Energy and Sustainability Services</span><span
style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><br>
</span><span
style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#626469;mso-fareast-language:EN-US">
Schneider Electric</span><span
style="color:#1F497D;mso-fareast-language:EN-US"><o:p></o:p></span></p>
</td>
<td style="width:218.3pt;padding:0in 0in 0in 0in"
valign="top" width="291">
<p class="MsoNormal"><span
style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#57B069;mso-fareast-language:EN-US">D </span><span
style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#626469;mso-fareast-language:EN-US">913.564.6361
</span><span
style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><br>
</span><span
style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#57B069;mso-fareast-language:EN-US">M </span><span
style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#626469;mso-fareast-language:EN-US">785.410.3317
</span><span
style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><br>
</span><span
style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#57B069;mso-fareast-language:EN-US">E </span><span
style="color:#1F497D;mso-fareast-language:EN-US"><a
moz-do-not-send="true"
href="mailto:nicholas.caton@schneider-electric.com"><span
style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#626469">nicholas.caton@schneider-electric.com</span></a></span><span
style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><br>
</span><span
style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#57B069;mso-fareast-language:EN-US">F </span><span
style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#626469;mso-fareast-language:EN-US">913.564.6380</span><span
style="color:#1F497D;mso-fareast-language:EN-US"><o:p></o:p></span></p>
</td>
<td style="width:152.4pt;padding:0in 0in 0in 0in"
valign="top" width="203">
<p class="MsoNormal" style="text-align:right"
align="right"><span
style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#626469;mso-fareast-language:EN-US">15200
Santa Fe Trail Drive<br>
Suite 204<br>
Lenexa, KS 66219<br>
United States</span><span
style="color:#1F497D;mso-fareast-language:EN-US"><o:p></o:p></span></p>
</td>
</tr>
<tr style="height:4.0pt">
<td colspan="3" style="width:543.0pt;padding:0in 0in 0in
0in;height:4.0pt" valign="top" width="724">
<p class="MsoNormal" style="mso-line-height-alt:4.0pt"><span
style="color:#3A7A46;mso-fareast-language:EN-US"><img
style="width:7.5208in;height:.5104in"
id="_x0000_i1035"
src="cid:part3.9A8BB888.ED4EA13B@whiteboxtechnologies.com"
alt="cid:image001.png@01D189AB.58634A10"
height="49" border="0" width="722"></span><span
style="color:#3A7A46;mso-fareast-language:EN-US"><o:p></o:p></span></p>
</td>
</tr>
</tbody>
</table>
<p class="MsoNormal"><span
style="color:windowtext;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
</div>
<p class="MsoNormal"><span
style="color:windowtext;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<div>
<div style="border:none;border-top:solid #E1E1E1
1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal"><b><span style="color:windowtext">From:</span></b><span
style="color:windowtext"> Equest-users
[<a class="moz-txt-link-freetext" href="mailto:equest-users-bounces@lists.onebuilding.org">mailto:equest-users-bounces@lists.onebuilding.org</a>]
<b>On Behalf Of </b>zhaoyongqing1987 via Equest-users<br>
<b>Sent:</b> Tuesday, November 29, 2016 7:54 PM<br>
<b>To:</b> Daric Adair via Equest-users
<a class="moz-txt-link-rfc2396E" href="mailto:equest-users@lists.onebuilding.org"><equest-users@lists.onebuilding.org></a><br>
<b>Subject:</b> Re: [Equest-users] Purpose of a
DESIGN-DAY CLIMATE input?<o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<div>
<div>
<div>
<div id="d2h_breadcrumbs">
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Microsoft
YaHei",sans-serif"><o:p> </o:p></span></p>
</div>
<div id="d2h_breadcrumbs">
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Microsoft
YaHei",sans-serif"><o:p> </o:p></span></p>
</div>
<div id="d2h_breadcrumbs">
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Microsoft
YaHei",sans-serif">DOE2.2 help files indicates
that </span>CLEARNESS and CLOUD-TYPE are now
replaced by <span
style="color:white;background:#3399FF">CLIMATE</span> and
VISIBILIY. It seems that CLIMATE is used for determine
the clearness of sky.<span
style="font-size:10.0pt;font-family:"Microsoft
YaHei",sans-serif"><o:p></o:p></span></p>
</div>
<p class="MsoBodyText"><span
style="font-size:10.0pt;font-family:"Microsoft
YaHei",sans-serif"><a moz-do-not-send="true"
href="mailmaster://webui/pages/write/writemail_content.html">Volume
3: Topics</a><span
class="d2hbreadcrumbslinkseparator"> > </span><a
moz-do-not-send="true"
href="mailmaster://webui/pages/write/writemail_content.html">Overview
and Converting From 2.1E</a><span
class="d2hbreadcrumbslinkseparator"> > </span><a
moz-do-not-send="true"
href="mailmaster://webui/pages/write/writemail_content.html">LOADS</a><o:p></o:p></span></p>
<p class="exampleinput"><span
style="font-size:10.0pt;font-family:"Microsoft
YaHei",sans-serif">DOE-2.1E version:<o:p></o:p></span></p>
<p class="doe-2input"><span
style="font-size:10.0pt;font-family:"Microsoft
YaHei",sans-serif">HOT-CLEAR-SUMMER = DESIGN-DAY<br>
DRYBULB-HI = 91 DRYBULB-LO = 71<br>
HOUR-HI = 15 HOUR-LO = 7<br>
DEWPT-HI = 65.5 DEWPT-LO = 60<br>
DHOUR-HI = 16 DHOUR-LO = 8<br>
WIND-SPEED = 7.5 WIND-DIR = 10<br>
CLOUD-AMOUNT = 0 CLOUD-TYPE = 0<br>
CLEARNESS = 1 GROUND-T = 61 ..<o:p></o:p></span></p>
<p class="doe-2input"><span
style="font-size:10.0pt;font-family:"Microsoft
YaHei",sans-serif">COLD-CLOUDY-WINTER =
DESIGN-DAY<br>
DRYBULB-HI = 6 DRYBULB-LO = -4<br>
HOUR-HI = 15 HOUR-LO = 2<br>
DEWPT-HI = 6 DEWPT-LO = -4<br>
DHOUR-HI = 16 DHOUR-LO = 3<br>
WIND-SPEED = 15 WIND-DIR = 14<br>
CLOUD-AMOUNT = 5 CLOUD-TYPE = 2<br>
CLEARNESS = 1 GROUND-T = 46 ..<o:p></o:p></span></p>
<p class="exampleinput"><span
style="font-size:10.0pt;font-family:"Microsoft
YaHei",sans-serif">Converted:<o:p></o:p></span></p>
<p class="doe-2input"><span
style="font-size:10.0pt;font-family:"Microsoft
YaHei",sans-serif">"Chicago CDD" = DESIGN-DAY<br>
TYPE = COOLING<br>
DRYBULB-HIGH = 91 DRYBULB-RANGE = 20<br>
HOUR-HIGH = 15 HOUR-LOW = 7<br>
WETBULB-AT-HIGH = 77 <br>
WIND-SPEED = 7.5 WIND-DIR = SW<br>
CLOUD-AMOUNT = 0 </span><span
style="font-size:10.0pt;font-family:"Microsoft
YaHei",sans-serif;color:white;background:#3399FF">CLIMATE</span><span
style="font-size:10.0pt;font-family:"Microsoft
YaHei",sans-serif"> = MIDLATITUDE<br>
VISIBILITY = HIGH GROUND-T = 61<br>
..<o:p></o:p></span></p>
<p class="doe-2input"><span
style="font-size:10.0pt;font-family:"Microsoft
YaHei",sans-serif">"Chicago HDD" = DESIGN-DAY<br>
TYPE = HEATING<br>
DRYBULB-HIGH = 6 DRYBULB-RANGE = 10<br>
HOUR-HIGH = 15 HOUR-LOW = 2<br>
WIND-SPEED = 15 WIND-DIR = NW<br>
CLOUD-AMOUNT = 5 </span><span
style="font-size:10.0pt;font-family:"Microsoft
YaHei",sans-serif;color:white;background:#3399FF">CLIMATE</span><span
style="font-size:10.0pt;font-family:"Microsoft
YaHei",sans-serif"> = MIDLATITUDE<br>
VISIBILITY = LOW GROUND-T = 46<o:p></o:p></span></p>
<div id="ntes-pcmail-signature">
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Microsoft
YaHei",sans-serif"><o:p> </o:p></span></p>
</div>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Microsoft
YaHei",sans-serif"><o:p> </o:p></span></p>
</div>
<div style="margin-bottom:7.5pt">
<p class="MsoNormal" style="margin-bottom:12.0pt"><span
style="font-size:10.5pt;font-family:"Microsoft
YaHei",sans-serif"><o:p> </o:p></span></p>
<div>
<p
style="margin:0in;margin-bottom:.0001pt;background:#EFEFEF"><span
style="font-size:9.0pt;font-family:"Microsoft
YaHei",sans-serif">On 11/30/2016 07:04<span
lang="ZH-CN">，
</span></span><span
style="font-size:9.0pt;font-family:"Microsoft
YaHei",sans-serif;color:#3593DB">David Griffin
II via Equest-users <<a moz-do-not-send="true"
href="mailto:equest-users@lists.onebuilding.org">equest-users@lists.onebuilding.org</a>>
</span><span
style="font-size:9.0pt;font-family:"Microsoft
YaHei",sans-serif">wrote<span lang="ZH-CN">：</span></span><span
style="font-size:9.0pt;font-family:"Microsoft
YaHei",sans-serif;color:#3593DB" lang="ZH-CN">
</span><span
style="font-size:9.0pt;font-family:"Microsoft
YaHei",sans-serif"><o:p></o:p></span></p>
</div>
</div>
<blockquote id="ntes-pcmail-quote">
<p class="MsoNormal"><a moz-do-not-send="true"
name="_MailEndCompose"><span style="color:#1F497D">Nick/Joe,</span></a><span
style="mso-bookmark:_MailEndCompose"></span><o:p></o:p></p>
<p class="MsoNormal"><span style="color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="color:#1F497D">I have
done some light research on the topic since DOE2.3
moves in the direction of utilizing DESIGN-DAY more
rigorously; e.g. if you depend on the weather file for
auto sizing in DOE2.3, your simulation takes twice as
long. I would refer both of you to page 23 of the
DOE2.3 Volume 6 “Design-Sizing Enhancements” where it
appears the eQUEST team is attempting exactly what Joe
previously mentioned.</span><o:p></o:p></p>
<p class="MsoNormal"><span style="color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="color:#1F497D">Although
I believe the CLIMATE input is still available in
DOE2.3 it may be ignored by the new algorithm. Maybe
Jeff H. can shed some light on this situation for us.</span><o:p></o:p></p>
<p class="MsoNormal"><span style="color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="color:#1F497D">Sincerely,</span><o:p></o:p></p>
<p class="MsoNormal"><span style="color:#1F497D"> </span><o:p></o:p></p>
<table class="MsoNormalTable" style="width:100.0%"
border="0" cellpadding="0" cellspacing="0" width="100%">
<tbody>
<tr>
<td style="width:60.0pt;padding:0in 9.75pt 0in 0in"
valign="top" width="80">
<p class="MsoNormal"><span
style="font-size:12.0pt;font-family:SimSun;color:windowtext"><a
moz-do-not-send="true"
href="http://www.archnexus.com"><span
style="text-decoration:none"><img
moz-do-not-send="true"
style="width:.8333in;height:1.0312in"
id="_x0000_i1025"
src="http://www.stationerycentral.com/SignatureImages10/ArchNexus-logo-80x99.png"
alt="ARCH | NEXUS" height="99"
border="0" width="80"></span></a><o:p></o:p></span></p>
</td>
<td style="width:.75pt;border:none;border-left:solid
#009AD9 1.0pt;padding:0in 0in 0in 0in"
valign="top" width="1">
<p class="MsoNormal"><span
style="font-size:12.0pt;font-family:SimSun;color:windowtext">
<o:p></o:p></span></p>
</td>
<td style="padding:0in 0in 0in 6.75pt">
<table class="MsoNormalTable" style="width:100.0%"
border="0" cellpadding="0" cellspacing="0"
width="100%">
<tbody>
<tr>
<td colspan="2" style="padding:0in 0in 0in
0in">
<p class="MsoNormal"><span
style="font-family:"Verdana",sans-serif;color:#52616E">DAVID
W. GRIFFIN II</span><span
style="font-size:12.0pt;font-family:SimSun;color:windowtext"><o:p></o:p></span></p>
</td>
</tr>
<tr>
<td colspan="2" style="padding:4.5pt 0in 0in
0in">
<p class="MsoNormal"><span
style="font-size:7.5pt;font-family:"Verdana",sans-serif;color:#52616E">BEMP<br>
ENERGY ANALYST</span><span
style="font-size:12.0pt;font-family:SimSun;color:windowtext"><o:p></o:p></span></p>
</td>
</tr>
<tr>
<td colspan="2" style="padding:4.5pt 0in
4.5pt 0in">
<p class="MsoNormal"><span
style="font-size:7.5pt;font-family:"Verdana",sans-serif;color:#52616E">2505
E Parleys Way<br>
Salt Lake City, UT 84109 </span><span
style="font-size:12.0pt;font-family:SimSun;color:windowtext"><o:p></o:p></span></p>
</td>
</tr>
<tr>
<td style="width:100.0%;padding:0in 0in 0in
2.25pt" nowrap="nowrap" width="100%">
<p class="MsoNormal"><b><span
style="font-size:7.5pt;font-family:"Verdana",sans-serif;color:#52616E">Office</span></b><span
style="font-size:7.5pt;font-family:"Verdana",sans-serif;color:#52616E"> 801.924.5028
</span><span
style="font-size:12.0pt;font-family:SimSun;color:windowtext"><o:p></o:p></span></p>
</td>
<td style="padding:0in 0in 0in 0in"><br>
</td>
</tr>
<tr>
<td colspan="2" style="padding:4.5pt 0in 0in
0in" nowrap="nowrap">
<p class="MsoNormal"><span
style="font-size:7.5pt;font-family:"Verdana",sans-serif;color:#52616E"><a
moz-do-not-send="true"
href="http://www.archnexus.com"><span
style="color:#52616E;text-decoration:none">archnexus.com</span></a></span><span
style="font-size:12.0pt;font-family:SimSun;color:windowtext"><o:p></o:p></span></p>
</td>
</tr>
<tr>
<td colspan="2" style="padding:4.5pt 0in 0in
0in" nowrap="nowrap">
<p class="MsoNormal"><span
style="font-size:12.0pt;font-family:SimSun;color:windowtext"><a
moz-do-not-send="true"
href="https://twitter.com/arch_nexus"><span
style="text-decoration:none"><img
moz-do-not-send="true"
style="width:.302in;height:.2291in"
id="_x0000_i1026"
src="http://www.stationerycentral.com/SignatureImages10/ArchNexus-tw-sharp-L-29x22.png"
alt="Twitter" height="22"
border="0" width="29"></span></a><a
moz-do-not-send="true"
href="https://www.facebook.com/pages/Architectural-Nexus/179588705397563?ref=ts&fref=ts"><span
style="text-decoration:none"><img
moz-do-not-send="true"
style="width:.302in;height:.2291in"
id="_x0000_i1027"
src="http://www.stationerycentral.com/SignatureImages10/ArchNexus-fb-sharp-L-29x22.png"
alt="Facebook" height="22"
border="0" width="29"></span></a><a
moz-do-not-send="true"
href="https://www.youtube.com/channel/UCYRPWKF-yp-AUiI8ia2XfKw?feature=mhee"><span
style="text-decoration:none"><img
moz-do-not-send="true"
style="width:.302in;height:.2291in"
id="_x0000_i1028"
src="http://www.stationerycentral.com/SignatureImages10/ArchNexus-yt-sharp-L-29x22.png"
alt="Youtube" height="22"
border="0" width="29"></span></a><a
moz-do-not-send="true"
href="https://www.linkedin.com/company/architectural-nexus"><span
style="text-decoration:none"><img
moz-do-not-send="true"
style="width:.302in;height:.2291in"
id="_x0000_i1029"
src="http://www.stationerycentral.com/SignatureImages10/ArchNexus-li-sharp-L-29x22.png"
alt="LinkedIn" height="22"
border="0" width="29"></span></a><o:p></o:p></span></p>
</td>
</tr>
</tbody>
</table>
</td>
</tr>
</tbody>
</table>
<div>
<div style="border:none;border-top:solid #E1E1E1
1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal"><b><span style="color:windowtext">From:</span></b><span
style="color:windowtext"> Joe Huang via
Equest-users [mailto:<a moz-do-not-send="true"
href="mailto:equest-users@lists.onebuilding.org">equest-users@lists.onebuilding.org</a>]
<br>
<b>Sent:</b> Tuesday, November 29, 2016 1:49 PM<br>
<b>To:</b> <a moz-do-not-send="true"
href="mailto:equest-users@lists.onebuilding.org">equest-users@lists.onebuilding.org</a><br>
<b>Subject:</b> Re: [Equest-users] Purpose of a
DESIGN-DAY CLIMATE input?</span><o:p></o:p></p>
</div>
</div>
<p class="MsoNormal"> <o:p></o:p></p>
<p>I think this is a case of DOE-2 still using an older
procedure for the solar portion of the design day
calculation. Prior to 2006, ASHRAE used a relatively
crude ASHRAE Clear Sky Model to determine the hourly
profile of solar radiation for the design day. That
model assumes there are different sky conditions for
different latitudes, etc. In 2006, ASHRAE TC 4.2
(Climatic Information) carried out a project to develop
an entirely new ASHRAE Clear Sky Model that's a
parameterization of a detailed solar model developed by
Chris Gueymard. <o:p></o:p></p>
<p>It would be nice if DOE-2 incorporates the new ASHRAE
Clear Sky Model, which isn't terribly hard, but would
take work. Besides, I'm under the impression that the
vast majority of DOE-2 users don't do design day
calculations but rather let the program autosize the
equipment anyway!<o:p></o:p></p>
<p>Joe<o:p></o:p></p>
<pre>Joe Huang<o:p></o:p></pre>
<pre>White Box Technologies, Inc.<o:p></o:p></pre>
<pre>346 Rheem Blvd., Suite 205A<o:p></o:p></pre>
<pre>Moraga CA 94556<o:p></o:p></pre>
<pre><a moz-do-not-send="true" href="mailto:yjhuang@whiteboxtechnologies.com">yjhuang@whiteboxtechnologies.com</a><o:p></o:p></pre>
<pre><a moz-do-not-send="true" href="http://weather.whiteboxtechnologies.com">http://weather.whiteboxtechnologies.com</a> for simulation-ready weather data<o:p></o:p></pre>
<pre>(o) (925)388-0265<o:p></o:p></pre>
<pre>(c) (510)928-2683<o:p></o:p></pre>
<pre>"building energy simulations at your fingertips"<o:p></o:p></pre>
<div>
<p class="MsoNormal">On 11/29/2016 9:43 AM, Nicholas
Caton via Equest-users wrote:<o:p></o:p></p>
</div>
<blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
<p class="MsoNormal">I have a question concerning
doe2/eQUEST DESIGN-DAYs.<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal">One of the keywords for DESIGN-DAY
confuses me: CLIMATE. I have not been able to find
this documented in the current doe2 reference manual
or 2.1A engineering manuals.
<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal">It appears the CLIMATE keyword can
accept one of three inputs: “SUBARCTIC,”
“MIDLATITUDE,” or “TROPICAL.” The default is
MIDLATITUDE and does not appear to reference anything
else.<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal"><img
style="width:5.9062in;height:4.8229in"
id="_x0000_i1030"
src="cid:part24.9781C9E9.4B0A6C01@whiteboxtechnologies.com"
height="463" border="0" width="567"><o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal">So I have a few questions:<o:p></o:p></p>
<p class="MsoListParagraph" style="text-indent:-.25in">1.<span
style="font-size:7.0pt;font-family:"Times New
Roman",serif">
</span>What is this input used for? Does it help to
determine solar angles during design day
calculations? Does it affect how other DESIGN-DAY
inputs are interpreted?<o:p></o:p></p>
<p class="MsoListParagraph" style="text-indent:-.25in">2.<span
style="font-size:7.0pt;font-family:"Times New
Roman",serif">
</span>Since one of the options is named
“MIDLATITUDE,” my best guess is this is trying to
establish in a loose sense which slice of the globe
the weather station is located at for solar angle
purposes. From that guess,
<a moz-do-not-send="true"
href="http://www.lat34north.com/cities/CitiesLatitude.cfm">I
googled the topic for a bit</a> and came up with
this framework:<o:p></o:p></p>
<p class="MsoListParagraph"
style="margin-left:1.0in;text-indent:-.25in">a.<span
style="font-size:7.0pt;font-family:"Times New
Roman",serif">
</span>SUBARCTIC latitudes are > 66.5 or <
-66.5 (Inside the Arctic circles – experiences days
of complete daylight/darkness)<o:p></o:p></p>
<p class="MsoListParagraph"
style="margin-left:1.0in;text-indent:-.25in">b.<span
style="font-size:7.0pt;font-family:"Times New
Roman",serif">
</span>TROPICAL is between -23.5 and 23.5 (Tropic of
Capricorn/Cancer – experiences the sun traversing
directly overhead)<o:p></o:p></p>
<p class="MsoListParagraph"
style="margin-left:1.0in;text-indent:-.25in">c.<span
style="font-size:7.0pt;font-family:"Times New
Roman",serif">
</span>MIDLATITUDE = everywhere else<o:p></o:p></p>
<p class="MsoListParagraph" style="text-indent:-.25in">3.<span
style="font-size:7.0pt;font-family:"Times New
Roman",serif">
</span>I struggle however with the concept of a
DESIGN-DAY input based on latitude, where<o:p></o:p></p>
<p class="MsoListParagraph"
style="margin-left:1.0in;text-indent:-.25in">a.<span
style="font-size:7.0pt;font-family:"Times New
Roman",serif">
</span>The latitude is already a part of the weather
file required for every simulation… and pulling the
exact latitude would be more accurate anyway (I
confess here I have never studied solar pathing in
great depth – the problem may be simpler than I
realize?).<o:p></o:p></p>
<p class="MsoListParagraph"
style="margin-left:1.0in;text-indent:-.25in">b.<span
style="font-size:7.0pt;font-family:"Times New
Roman",serif">
</span>These bands alone don’t give you enough
information to know when you’re in the lower
hemisphere (where solar angles based on the day/month
would be flipped)<o:p></o:p></p>
<p class="MsoListParagraph"
style="margin-left:1.0in;text-indent:-.25in">c.<span
style="font-size:7.0pt;font-family:"Times New
Roman",serif">
</span>This leads me to question whether there’s a
(meaningful) difference in solar angles experienced
for loads calculations when you use the weather file
instead of DESIGN-DAY inputs.
<o:p></o:p></p>
<p class="MsoListParagraph"
style="margin-left:1.0in;text-indent:-.25in">d.<span
style="font-size:7.0pt;font-family:"Times New
Roman",serif">
</span>Alternatively, maybe the latitude IS pulled
from the weather file for solar angle purposes so I’m
completely on the wrong path as to the purpose/intent
for the CLIMATE input.<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal">Can anyone set me straight on this
topic?<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal">~Nick<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal"><span
style="font-family:"Arial",sans-serif;color:#3A7A46"><img
style="width:7.5208in;height:.0937in"
id="Picture_x0020_1"
src="cid:part1.FC385C34.9237CDDF@whiteboxtechnologies.com"
height="9" border="0" width="722"></span><o:p></o:p></p>
<p class="MsoNormal"><b><span
style="font-family:"Arial",sans-serif;color:#3A7A46">Nick
Caton, P.E., BEMP</span></b><o:p></o:p></p>
<table class="MsoNormalTable"
style="width:543.0pt;border-collapse:collapse"
border="0" cellpadding="0" cellspacing="0" width="724">
<tbody>
<tr>
<td style="width:172.3pt;padding:0in 0in 0in 0in"
valign="top" width="230">
<p class="MsoNormal"><span
style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#626469">
Senior Energy Engineer</span><span
style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#1F497D"><br>
</span><span
style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#626469">
Energy and Sustainability Services</span><span
style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#1F497D"><br>
</span><span
style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#626469">
Schneider Electric</span><o:p></o:p></p>
</td>
<td style="width:218.3pt;padding:0in 0in 0in 0in"
valign="top" width="291">
<p class="MsoNormal"><span
style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#57B069">D </span><span
style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#626469">913.564.6361
</span><span
style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#1F497D"><br>
</span><span
style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#57B069">M </span><span
style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#626469">785.410.3317
</span><span
style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#1F497D"><br>
</span><span
style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#57B069">E </span><span
style="color:#1F497D"><a
moz-do-not-send="true"
href="mailto:nicholas.caton@schneider-electric.com"><span
style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#626469">nicholas.caton@schneider-electric.com</span></a></span><span
style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#1F497D"><br>
</span><span
style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#57B069">F </span><span
style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#626469">913.564.6380</span><o:p></o:p></p>
</td>
<td style="width:152.4pt;padding:0in 0in 0in 0in"
valign="top" width="203">
<p class="MsoNormal" style="text-align:right"
align="right"><span
style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#626469">15200
Santa Fe Trail Drive<br>
Suite 204<br>
Lenexa, KS 66219<br>
United States</span><o:p></o:p></p>
</td>
</tr>
<tr style="height:4.0pt">
<td colspan="3" style="width:543.0pt;padding:0in
0in 0in 0in;height:4.0pt" valign="top"
width="724">
<p class="MsoNormal"
style="mso-line-height-alt:4.0pt"><span
style="color:#3A7A46"><img
style="width:7.5208in;height:.5104in"
id="Picture_x0020_3"
src="cid:part3.9A8BB888.ED4EA13B@whiteboxtechnologies.com"
alt="cid:image001.png@01D189AB.58634A10"
height="49" border="0" width="722"></span><o:p></o:p></p>
</td>
</tr>
</tbody>
</table>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<div>
<div class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Times
New Roman",serif">
<hr style="color:#8091A5" align="left"
noshade="noshade" size="2" width="100%">
</span></div>
</div>
<p class="MsoNormal"><span
style="font-size:10.0pt;color:gray">This message was
scanned by Exchange Online Protection Services.
</span><o:p></o:p></p>
<div>
<div class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Times
New Roman",serif">
<hr style="color:#8091A5" align="left"
noshade="noshade" size="2" width="100%">
</span></div>
</div>
<p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Times New
Roman",serif"><br>
<br>
<br>
<br>
</span><o:p></o:p></p>
<pre>_______________________________________________<o:p></o:p></pre>
<pre>Equest-users mailing list<o:p></o:p></pre>
<pre><a moz-do-not-send="true" href="http://lists.onebuilding.org/listinfo.cgi/equest-users-onebuilding.org">http://lists.onebuilding.org/listinfo.cgi/equest-users-onebuilding.org</a><o:p></o:p></pre>
<pre>To unsubscribe from this mailing list send a blank message to <a moz-do-not-send="true" href="mailto:EQUEST-USERS-UNSUBSCRIBE@ONEBUILDING.ORG">EQUEST-USERS-UNSUBSCRIBE@ONEBUILDING.ORG</a><o:p></o:p></pre>
</blockquote>
<p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Times New
Roman",serif"> </span><o:p></o:p></p>
</blockquote>
</div>
<p class="MsoNormal" style="margin-bottom:12.0pt"><span
style="font-size:10.0pt;font-family:"Microsoft
YaHei",sans-serif"><o:p> </o:p></span></p>
</div>
<p class="MsoNormal"><span
style="font-size:12.0pt;font-family:SimSun;color:windowtext"><br>
<br>
<br>
______________________________________________________________________<br>
This email has been scanned by the Symantec Email
Security.cloud service.<br>
______________________________________________________________________<o:p></o:p></span></p>
</div>
<hr style="color:#8091A5; " align="left" noshade="noshade"
size="2" width="100%">
<span
style="font-size:10.0pt;font-family:"Calibri",sans-serif;color:gray">This
message was scanned by Exchange Online Protection Services.
</span>
<hr style="color:#8091A5; " align="left" noshade="noshade"
size="2" width="100%">
</blockquote>
<br>
</body>
</html>