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<p>TRNSYS Users,</p>
<p>I wanted to thank all of our users that proposed solutions to the first ever TESS/TRNSYS pop quiz! We had several unique solutions and several excellent responses to the quiz. If you tried to solve the problem you likely realized that it was a bit trickier than it looked at first glance. There were two common solutions that were proposed, to use the Input Delay Controller and to use the TESS Runtime Calculator model. Both solutions will work equally well but the Runtime Calculator approach is much more flexible if you ever need to change the simulation timestep. One of the keys to this exercise was to remember that the time notation in TRNSYS represents the end of the simulation timestep. For example, Time=2 represents the time period from 1.875 to 2.000 with an 1/8th hour timestep. This tripped up a few of our submittals that were otherwise substantially correct.</p>
<p>You can check out one of our solutions to the problem in the attached project file.</p>
<p>So without further ado, the winners of the $100 TESS credit are:</p>
<p>Roel Loonen, University of Eindhoven in the most creative solution category and Professor MK (wishes to remain anonymous so his students aren't aware that he wasn't working on their homework) for the best solution. Professor MK is a long time TRNSYS user and and is well known to this technical support forum. Congratulations to you both and please let us know how/when you'd like to cash in your award!</p>
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<p>Jeff</p>
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<pre>---<br />Jeff Thornton
President - TESS LLC
3 N. Pinckney Street, Suite 202, Madison WI USA 53703
Office: (608) 274-2577 Fax: (608) 278-1475
www.tess-inc.com
E-Mail: thornton@tess-inc.com
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