<p dir="ltr">Thank you sir</p>
<div class="gmail_quote">Le 10 avr. 2018 17:53, "Jeff Thornton via TRNSYS-users" <<a href="mailto:trnsys-users@lists.onebuilding.org">trnsys-users@lists.onebuilding.org</a>> a écrit :<br type="attribution"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">We don't officially support TRNSYS 16 as it's two versions out of date. But I took a quick look at your project and several things stood out immediately. The first is that you are using a 1-hour time step. That means your control decisions are made once an hour - likely the biggest cause of your issues. Typically a sysytem like this should run at around a 1-minute time step. The other thing I caught was that your pump flow rates are only about a third of the minimum flow rate that the heap pump expects. This will create a very large temperature difference across both sides of the heat pump.<br>
<br>
Jeff<br>
<br>
---<br>
Jeff Thornton<br>
President - TESS LLC<br>
22 N. Carroll Street, Madison WI USA 53703<br>
Office: (608) 274-2577 Fax: (608) 278-1475<br>
<a href="http://www.tess-inc.com" rel="noreferrer" target="_blank">www.tess-inc.com</a><br>
E-Mail: <a href="mailto:thornton@tess-inc.com" target="_blank">thornton@tess-inc.com</a><br>
<br>
<br>
On 04/10/2018 8:19 am, berkane ahlem via TRNSYS-users wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
dear sirs,<br>
i'am using the type 668 (water to water heat pump ) in trnsys16<br>
coupled with horizontal ground heat exchange type556 for heating a<br>
storage tank, the problem is The<br>
temperature of the outlet source and The temperature of the outlet load it's<br>
not acceptable<br>
please find the attached program in trnsys<br>
thanks<br>
<br>
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