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<p>Muhammad,</p>
<p> Can you be a bit more specific about what you mean by "transient
state" analysis? Type1271 uses a performance map lookup method.
Its compressor is assumed to vary its speed to maintain a constant
outlet temperature on the load side. In that the heat pump
compressor adjusts to the present load requirements it does do a
transient analysis. However, if you are looking for a component
that uses a more first principals approach and models the state of
the refrigerant in the heat pumps heat exchangers, compressors,
and expansion valve then I think you would need to look to a
different Type than 1271.</p>
<p><br>
</p>
<p>As a side comment, please note that Type1271 is an air (source)
to water (load) heat pump, not an air to air heat pump. <br>
</p>
<p>kind regards,</p>
<p> David</p>
<p><br>
</p>
<p><br>
</p>
<div class="moz-cite-prefix">On 12/20/2018 07:50, Muhammad Abid via
TRNSYS-users wrote:<br>
</div>
<blockquote type="cite"
cite="mid:DB7PR06MB4619646F3827E9C01E0B6B11A1BF0@DB7PR06MB4619.eurprd06.prod.outlook.com">
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<p style="margin-top:0;margin-bottom:0">Hi,</p>
<p style="margin-top:0;margin-bottom:0"><br>
</p>
<p style="margin-top:0;margin-bottom:0">I am a new user to
TRNSYS from Ulster University. I would be working for my PhD
studies on the topic of variable speed air source heat pump .
I found this "Type 1271v2" ASHP from TESS library useful for
me.</p>
<p style="margin-top:0;margin-bottom:0"><br>
</p>
<p style="margin-top:0;margin-bottom:0">I am interested in the
transient state analysis of the HP. Is this Type suitable for
me or i should use some other software(like EES or Matlab) for
the transient state analysis?</p>
<p style="margin-top:0;margin-bottom:0"><br>
</p>
<p style="margin-top:0;margin-bottom:0">Best Regards</p>
</div>
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David BRADLEY
Principal
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