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Elias,<br>
There are two components in the TESS Utility library that will choose
a random number. Type578 gets a random number from a normal
distribution. Type577 generates a random number from a "uniform"
distribution.<br>
Best,<br>
David<br>
<br>
<br>
On 10/2/2010 13:38, Elias Sasati wrote:
<blockquote
cite="mid:AANLkTimiE9z-5h3LMdvr5yUxU-vdv1CUS0VqtSQ+LCDR@mail.gmail.com"
type="cite">Dear TRNSYS users,
<div><br>
</div>
<div><br>
</div>
<blockquote class="webkit-indent-blockquote"
style="border: medium none ; margin: 0pt 0pt 0pt 40px; padding: 0px;">
<div>Estimating the electricity demand for a household only by
using TRNBuild Schedule Type Manager and also use fixed values for
Gains from electrical devises, you will not achive real results.</div>
</blockquote>
By adding a value of "2" for 8 p.m. to 11 p.m. every day for lights and
increase that value for weekends in the schedule isn't real world
example. Kitchen won't be used everyday at the same time for one hour
and refrigerator starts and stops depending on the use. OK 8 a.m. to
6p.m. there is almost no use of electricity (only refrigerator is on,
usually) for workdays but after 6p.m. when people go to their home
after work and children come back from school, there is a greater
demand for power.
<div><br>
</div>
<div>So is there a way to use random values within a range with
Studio, so that the load of the generator won't be the same all the
time and the gains of a zone won't be fixed and repeated every day ?</div>
<div><br>
</div>
<div>By the way, I know it's beyond TRNSYS program this question, but
does anyone knows how do they calculate or estimate the electrical load
for a household (Load diversity factor) ? Maybe like "Erlang B formula"
for telecommunications?</div>
<div><br>
</div>
<div><br>
</div>
<div><br>
</div>
<div>Thank you for your time,</div>
<div><br>
</div>
<div>Elias Sasati </div>
<div>
<div><br>
</div>
</div>
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<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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