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<p>Arrate,</p>
<p> Most tempering valves that I am familiar with are three-way
(they mix cold water in with a source that is hotter than the
desired delivery temperature). There is a model of such a valve in
the standard Trnsys18 library. If you are using Trnsys17 then
there is a model in the TESS Controllers library or the same
function can be achieved using Type11. To use Type11 for this,
have a look at its documentation; there is an example of setting
it up as a tempering valve.</p>
<p> I am not sure what the 4th way is used for in your case. Is it
perhaps to bring the temperature up to a minimum allowable value
using water from a hot source? If so then you might be able to use
two tempering valves in sequence to achieve this. Trnsys18 has
both heating and cooling tempering valve controller models. If you
are using an earlier version you'll need to be a little clever
about how you apply the models' control signals because those
models are only set up for cooling applications.</p>
<p>kind regards,</p>
<p> David</p>
<p><br>
</p>
<div class="moz-cite-prefix">On 03/08/2019 07:35, ARRATE HERNANDEZ
via TRNSYS-users wrote:<br>
</div>
<blockquote type="cite"
cite="mid:20190308143532.Horde.RlGmDYhRS1TOPjHhGxjqDII@webposta.ehu.eus">Dear
users,
<br>
<br>
I want to fix an output value, the flow rate to load, in a 4-way
tempering valve to use it in a DHW loop. Could you help me?
Thanks,
<br>
<br>
Arrate
<br>
<br>
<br>
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<pre class="moz-signature" cols="72">--
***************************
David BRADLEY
Principal
Thermal Energy Systems Specialists, LLC
3 North Pinckney Street - suite 202
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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