<div dir="auto">Thanks a lot David. Would you please elaborate a bit more about the compressor power how it would be calculated?<div dir="auto">External files contains fractions of compressor power e.g. 0.8,0.9 etc. Where as in manual equations are quoted as: q_condensor = q_evporator + p_compressor </div><div dir="auto">Here, both q_condensor and p_compressor are unknown</div><div dir="auto">How q_condensor and p_compressor will be calculated. </div><div dir="auto"><br></div><div dir="auto">Thanks</div><div dir="auto"><br></div><div dir="auto">Regards,</div><div dir="auto">Muhammad Zeeshan </div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Fri, Mar 27, 2020, 18:45 David BRADLEY <<a href="mailto:d.bradley@tess-inc.com" target="_blank" rel="noreferrer">d.bradley@tess-inc.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div>
<p>Muhammad,</p>
<p> Please refer to the Type941 documentation. It explains how the
external files and the parameters relate to each other to compute
the overall capacity and power consumption of the heat pump. <br>
</p>
<p> The evaporator does not really need to be designed more than to
choose a machine with an appropriate rated capacity. Traditionally
that might mean adding a safety factor to the peak cooling load
(10% is often used) and then selecting a machine that will meet
that capacity. Also bear in mind that Type941 models a single
speed (ie single capacity) heat pump that is either on or off.
Depending on how variable the load in your building it, you might
want to meet that load with multiple smaller heat pumps rather
than one big one.</p>
<p>kind regards,</p>
<p> David</p>
<p><br>
</p>
<div>On 03/27/2020 08:02, Muhammad Zeeshan
via TRNSYS-users wrote:<br>
</div>
<blockquote type="cite">
<div dir="auto">Hello Everyone,
<div dir="auto"> </div>
<div dir="auto"> I am working on
cooling a building with type 41(air to water source heat
pump). The cooling load of the building is 25 tons. I want to
know</div>
<div dir="auto"><br>
</div>
<div dir="auto">1)- how the compressor power will be calculated?
as the external files of type 941 contains fractions of
compressor power which shows no link to the equations provided
in manual. How to link the external file with the provided
equations?</div>
<div dir="auto"><br>
</div>
<div dir="auto">2)-As the cooling load of the building is 25
tons, how to design the evaporator for this building load?</div>
<div dir="auto"><br>
</div>
<div dir="auto">Your help in this regard will be highly
appreciated.</div>
<div dir="auto"><br>
</div>
<div dir="auto"><br>
</div>
<div dir="auto"><br>
</div>
<div dir="auto">Regards,</div>
<div dir="auto">Muhammad Zeeshan</div>
</div>
<br>
<fieldset></fieldset>
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<pre 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 href="mailto:d.bradley@tess-inc.com" rel="noreferrer noreferrer" target="_blank">d.bradley@tess-inc.com</a>
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