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Meriem,<br>
TRNSYS's outputs are almost always the average value of the
variable over the timestep. Type99 makes some assumptions about what
kind of data is provided in the file (averages over the timestep,
instantaneous values at the end of the timestep, etc.) so you have
to make certain that the data you are providing has the same
assumptions. If you are working with field measured data and need a
little more flexibility in reading it you can use Type9. Type9 does
not do the radiation processing that Type99 does so you will have to
connect your Type9 to a Type16 radiation processor. Type9 does,
however, allow to you specify what kind of data you are providing
(in terms of averages over a timestep, totals for each time step, or
instantaneous values at the end of the timestep) for each of the
values that you read.<br>
<br>
As far as your questions 3 and 4 are concerned, the correlations
that take raw radiation data and use it to compute the radiation
falling on an arbitrary tilted surface require that you specify two
components of the radiation. The correlations that use Ibn
(Ibeam_normal) and one other component (I for example) are the
preferred correlations. That, however, does not mean that you can't
read all of the components if you have them measured. Simply use I
and Ibn for the radiation mode.<br>
Best,<br>
David<br>
<br>
<br>
<br>
<div class="moz-cite-prefix">On 4/27/2014 18:05, MERIEM SOUSSI
wrote:<br>
</div>
<blockquote
cite="mid:1398639911.9524.YahooMailNeo@web172706.mail.ir2.yahoo.com"
type="cite">
<div style="color:#000; background-color:#fff;
font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial,
Lucida Grande, sans-serif;font-size:12pt">
<div class="" style=""><span class="" style="">Dear
Trnsys-users,</span></div>
<div style="color: rgb(0, 0, 0); font-size: 16px; font-family:
HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida
Grande', sans-serif; background-color: transparent;
font-style: normal" class=""><span class="" style="">I'm using
type 99 to read a weather file in user format.</span></div>
<div style="color: rgb(0, 0, 0); font-size: 16px; font-family:
HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida
Grande', sans-serif; background-color: transparent;
font-style: normal" class=""><span class="" style="">I created
the weather data file in the appropriate format and tested
it in order to verify the data produced by type 99. The file
is created with one hour time interval and the simulation
needed is also of 1h interval, so I need type 99 to read the
exact values supplied without modification, I only need it
to process several surfaces.</span></div>
<div style="color: rgb(0, 0, 0); font-size: 16px; font-family:
HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida
Grande', sans-serif; background-color: transparent;
font-style: normal" class=""><span class="" style="">I have
the following questions:</span></div>
<div style="color: rgb(0, 0, 0); font-size: 16px; font-family:
HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida
Grande', sans-serif; background-color: transparent;
font-style: normal" class=""><span class="" style="">1- How
can I get the exact values of ambient Temperature that I
supply in the data file? I tested with "No interpolation" </span></div>
<div style="background-color: transparent" class=""><interp>
0 <add> 0 <mult> 1<span class=""
style="white-space: pre"> </span> <samp> 0</div>
<div style="color: rgb(0, 0, 0); font-size: 16px; font-family:
HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida
Grande', sans-serif; background-color: transparent;
font-style: normal" class=""><span class="" style="">and i
didn't get the right values?</span></div>
<div style="color: rgb(0, 0, 0); font-size: 16px; font-family:
HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida
Grande', sans-serif; background-color: transparent;
font-style: normal;" class=""><span class="" style="">2- How
can I get the exact values of relative humidity, I tested
with no interpolation and <interp>=0. and I get wrong
values.</span></div>
<div style="background-color: transparent" class=""><span
class="" style="color: rgb(0, 0, 0); font-family:
HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida
Grande', sans-serif; font-size: 16px; font-style: normal">3-
I have the values of </span><span style="background-color:
transparent" class="">IBEAM_H, <span style="white-space:
pre" class=""> </span></span><span
style="background-color: transparent; font-size: 12pt"
class="">IBEAM_N, <span style="white-space: pre" class=""> </span></span><span
style="background-color: transparent; font-size: 12pt"
class="">IDIFF_H </span><span class=""
style="background-color: transparent; font-size: 12pt;
white-space: pre"> and </span><span class=""
style="background-color: transparent; font-size: 12pt;
white-space: pre"> </span><span style="background-color:
transparent; font-size: 12pt" class="">IGLOB_H<span
style="white-space: pre" class="">. Is it correct to write
them all in the weather data file or this may cause a
problem and I should respect the choice: (Ib and Id, I and
Id, I and Ibn) as mentioned in the help document?</span></span></div>
<div style="background-color: transparent; color: rgb(0, 0, 0);
font-size: 16px; font-family: HelveticaNeue, 'Helvetica Neue',
Helvetica, Arial, 'Lucida Grande', sans-serif; font-style:
normal" class=""><span style="background-color: transparent;
font-size: 12pt" class=""><span style="white-space: pre"
class="">4- If I have to choose between the irradiation
values mentioned above, which irradiation I need to supply
in addition to </span></span><span class=""
style="font-size: 12pt; background-color: transparent"><span
class="" style="white-space: pre"> </span></span><span
class="" style="font-size: 12pt; background-color:
transparent">IBEAM_N.</span></div>
<div style="background-color: transparent; color: rgb(0, 0, 0);
font-size: 16px; font-family: HelveticaNeue, 'Helvetica Neue',
Helvetica, Arial, 'Lucida Grande', sans-serif; font-style:
normal" class=""><span style="background-color: transparent;
font-size: 12pt" class=""><span style="white-space: pre"
class="">Actually, I need to supply the DNI (IBEAM_N)
since I'm using a field of parabolic trough solar
collectors and I want to be sure of the values used.</span></span></div>
<div style="background-color: transparent; color: rgb(0, 0, 0);
font-size: 16px; font-family: HelveticaNeue, 'Helvetica Neue',
Helvetica, Arial, 'Lucida Grande', sans-serif; font-style:
normal;" class=""><span style="background-color: transparent;
font-size: 12pt" class=""><span style="white-space: pre"
class="">Thank you in advance for help </span></span></div>
<div style="background-color: transparent; color: rgb(0, 0, 0);
font-size: 16px; font-family: HelveticaNeue, 'Helvetica Neue',
Helvetica, Arial, 'Lucida Grande', sans-serif; font-style:
normal;" class=""><span style="background-color: transparent;
font-size: 12pt" class=""><span style="white-space: pre"
class="">Cordially</span></span></div>
<div class="" style=""><br class="" style="">
<br class="" style="">
<font class="" style="" color="#0060bf" face="garamond, new
york, times, serif" size="4">Meriem SOUSSI<br class=""
style="">
Ingénieur énergéticien/doctorant<br class="" style="">
<br>
</font></div>
</div>
<br>
<fieldset class="mimeAttachmentHeader"></fieldset>
<br>
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</pre>
</blockquote>
<br>
<pre class="moz-signature" cols="72">--
***************************
David BRADLEY
Principal
Thermal Energy Systems Specialists, LLC
22 North Carroll Street - suite 370
Madison, WI 53703 USA
P:+1.608.274.2577
F:+1.608.278.1475
<a class="moz-txt-link-abbreviated" href="mailto:d.bradley@tess-inc.com">d.bradley@tess-inc.com</a>
<a class="moz-txt-link-freetext" href="http://www.tess-inc.com">http://www.tess-inc.com</a>
<a class="moz-txt-link-freetext" href="http://www.trnsys.com">http://www.trnsys.com</a></pre>
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