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<p class="MsoNormal"><span style="font-family:"Century Schoolbook",serif">Dear Sardari,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Century Schoolbook",serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Century Schoolbook",serif">You can use two-stage heat pump models to create low, nominal and high stages for the considered heat pump.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Century Schoolbook",serif">We had a publication for a two stage air source heat pump. Pls. see the shared link below.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Century Schoolbook",serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Century Schoolbook",serif"><a href="https://www.sciencedirect.com/science/article/pii/S2210670721000482">https://www.sciencedirect.com/science/article/pii/S2210670721000482</a>
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Century Schoolbook",serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Century Schoolbook",serif">Best regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Century Schoolbook",serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Century Schoolbook",serif">Dr. Huseyin Gunhan OZCAN<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Century Schoolbook",serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="mso-fareast-language:TR">From:</span></b><span style="mso-fareast-language:TR"> TRNSYS-users <trnsys-users-bounces@lists.onebuilding.org>
<b>On Behalf Of </b>Pouyan Talebizadehsardari (Staff) via TRNSYS-users<br>
<b>Sent:</b> Monday, August 9, 2021 12:54 PM<br>
<b>To:</b> TRNSYS-users@lists.onebuilding.org<br>
<b>Cc:</b> Pouyan Talebizadehsardari (Staff) <Pouyan.Talebizadehsardari@brunel.ac.uk><br>
<b>Subject:</b> [TRNSYS-users] air-to-water heat pump - Type 941<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span lang="EN-GB" style="font-size:14.0pt">Dear All,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="font-size:14.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="font-size:14.0pt">I am modelling a house heated by radiators using an air-to-water heat pump. This model is based on user-supplied data files containing catalogue data for the capacity and power based on the inlet
water temperature and air to the heat pump. As I understand, for a specific existed heat pump, the system should be tested for several inlet conditions (for example 5 different temperatures of water and air=25 case) and then create a new data file including
the capacity and power. Am I correct?<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="font-size:14.0pt">My main question is that is it possible to consider additional characteristics of the heat pump in the model such as variable speed compressor so the system can be worked with a lower power when
less heat is required for the radiators?<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="font-size:14.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="font-size:14.0pt">Thanks in advance<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="font-size:14.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="font-size:14.0pt">Best regards<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal" style="background:white"><b><span lang="EN-GB" style="color:#201F1E;border:none windowtext 1.0pt;padding:0cm;mso-fareast-language:EN-GB">*******************************************************************************</span></b><span lang="EN-GB" style="font-size:12.0pt;font-family:"Times New Roman",serif;color:#222222;mso-fareast-language:EN-GB"><o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><b><span lang="EN-GB" style="font-size:12.0pt;font-family:"Times New Roman",serif;color:#201F1E;border:none windowtext 1.0pt;padding:0cm;mso-fareast-language:EN-GB">Pouyan Talebizadeh Sardari</span></b><span lang="EN-GB" style="font-size:12.0pt;font-family:"Times New Roman",serif;color:#201F1E;border:none windowtext 1.0pt;padding:0cm;mso-fareast-language:EN-GB">, BSc
MSc PhD AFHEA</span><span lang="EN-GB" style="font-size:12.0pt;font-family:"Times New Roman",serif;color:#222222;mso-fareast-language:EN-GB"><o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span lang="EN-GB" style="font-size:12.0pt;font-family:"Times New Roman",serif;color:#201F1E;border:none windowtext 1.0pt;padding:0cm;mso-fareast-language:EN-GB">Centre for Sustainable Energy Use in Food Chains,
<o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span lang="EN-GB" style="font-size:12.0pt;font-family:"Times New Roman",serif;color:#201F1E;border:none windowtext 1.0pt;padding:0cm;mso-fareast-language:EN-GB">Institute of Energy Futures,
<o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span lang="EN-GB" style="font-size:12.0pt;font-family:"Times New Roman",serif;color:#201F1E;border:none windowtext 1.0pt;padding:0cm;mso-fareast-language:EN-GB">Brunel University London,
<o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span lang="EN-GB" style="font-size:12.0pt;font-family:"Times New Roman",serif;color:#201F1E;border:none windowtext 1.0pt;padding:0cm;mso-fareast-language:EN-GB">Kingston Lane, Uxbridge, Middlesex, UB8 3PH, UK
</span><span lang="EN-GB" style="font-size:12.0pt;font-family:"Times New Roman",serif;color:#222222;mso-fareast-language:EN-GB"><o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span lang="EN-GB" style="font-size:12.0pt;font-family:"Times New Roman",serif;color:#201F1E;border:none windowtext 1.0pt;padding:0cm;mso-fareast-language:EN-GB">Email: </span><span lang="EN-GB" style="color:black;mso-fareast-language:EN-GB"><a href="mailto:pouyan.talebizadehsardari@brunel.ac.uk"><span style="font-size:12.0pt;font-family:"Times New Roman",serif;color:blue;border:none windowtext 1.0pt;padding:0cm">pouyan.talebizadehsardari@brunel.ac.uk</span></a></span><span lang="EN-GB" style="font-size:12.0pt;font-family:"Times New Roman",serif;color:#222222;mso-fareast-language:EN-GB"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"><o:p> </o:p></span></p>
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