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</o:shapelayout></xml><![endif]--></head><body lang=PL link="#0563C1" vlink="#954F72"><div class=WordSection1><p class=MsoNormal><span lang=EN-US>I’ve prepared a simulation of a room with TABS (in the ceiling). I have a problem with temperatures that I get in this ceiling. I wonder if it is due to the boundary conditions settings.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>Please take a look at the graphical representation of the situation below:<o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:PL'><img width=715 height=241 style='width:7.4479in;height:2.5104in' id="Obraz_x0020_2" src="cid:image005.jpg@01D38A17.64170EF0"></span><span lang=EN-GB><o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB><o:p> </o:p></span></p><p class=MsoListParagraphCxSpFirst style='margin-left:0cm;mso-add-space:auto;text-indent:-18.0pt;mso-list:l0 level1 lfo1'><![if !supportLists]><span lang=EN-GB><span style='mso-list:Ignore'>1.<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span lang=EN-US>1. Do I understand correctly that “heat transfer coefficient” (Manual TRNSYS17, Volume 5 page 109) is supposed to be set to “less than 0,001kJ/h/m<sup>2</sup>” regardless of conditions being adiabatic or not?</span><span lang=EN-GB><o:p></o:p></span></p><p class=MsoListParagraphCxSpMiddle style='margin-left:0cm;mso-add-space:auto;text-indent:-18.0pt;mso-list:l0 level1 lfo1'><![if !supportLists]><span lang=EN-US><span style='mso-list:Ignore'>2.<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span lang=EN-US>2. As far as remaining partitions are concerned, should I set “heat transfer coefficient” to “less than 0,001kJ/h/m<sup>2</sup>”? <o:p></o:p></span></p><p class=MsoListParagraphCxSpMiddle style='margin-left:0cm;mso-add-space:auto;text-indent:-18.0pt;mso-list:l0 level1 lfo1'><![if !supportLists]><span lang=EN-GB><span style='mso-list:Ignore'>3.<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span lang=EN-US style='color:black'>3. My room has surface area of 48m<sup>2</sup> and volume of 129m<sup>3</sup>. </span><span lang=EN-GB style='color:black'>TABS settings: </span><span lang=EN-GB>m_water=601.2kg/h, T_Water=18°C. TOFL-TIFL =0.7K. </span><span lang=EN-US>What else can cause water temperature difference to be so low?</span><span lang=EN-GB><o:p></o:p></span></p><p class=MsoListParagraphCxSpLast style='margin-left:0cm;mso-add-space:auto'><span style='mso-fareast-language:PL'><img width=604 height=323 style='width:6.2916in;height:3.3645in' id="Obraz_x0020_1" src="cid:image006.jpg@01D38A17.64170EF0"></span><o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span lang=EN-US style='color:black'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma",sans-serif;color:black;mso-fareast-language:PL'>Katarzyna Pałaszyńska M.Sc.</span><span style='color:black;mso-fareast-language:PL'><o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='mso-fareast-language:PL'>Faculty of Civil and Environemntal Engineering<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='mso-fareast-language:PL'>Division of Heating, Air Conditioning and Air Protection<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='mso-fareast-language:PL'>Poznan University of Technology<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma",sans-serif;color:black;mso-fareast-language:PL'><br>e-mail: <a href="mailto:katarzyna.palaszynska@put.poznan.pl"><span style='color:blue'>katarzyna.palaszynska@put.poznan.pl</span></a></span><span style='color:black;mso-fareast-language:PL'><o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:PL'><o:p> </o:p></span></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>