<div dir="ltr"><p class="MsoNormal" style="margin:0cm 0cm 0.0001pt;line-height:normal;font-size:11pt;font-family:Calibri,sans-serif"><span style="font-size:12pt;font-family:"Times New Roman",serif">Dear all,</span></p>
<p class="MsoNormal" style="margin:0cm 0cm 0.0001pt;line-height:normal;font-size:11pt;font-family:Calibri,sans-serif"><span style="font-size:12pt;font-family:"Times New Roman",serif">I want to calculate the wall gains
or heat gain from the building envelope for my building type 56 with one zone/ air node. I read "Volume 5 Multi-zone Building modeling with Type56 and
TRNBuild". I stumbled upon the energy balance equation where all the
energy coming in and out are written. The equation is (NTYPE 904) </span></p>
<p class="MsoNormal" style="margin:0cm 0cm 0.0001pt;line-height:normal;font-size:11pt;font-family:Calibri,sans-serif"><span style="font-size:12pt;font-family:"Times New Roman",serif;color:black">B4_QBAL =- B4_DQAIRdt +
B4_QHEAT - B4_QCOOL + B4_QINF + B4_QVENT + B4_QCOUP + B4_QTRANS + B4_QGINT +
B4_QWGAIN + B4_QSOL + B4_QSOLAIR [kJ/hr]. </span></p>
<p class="MsoNormal" style="margin:0cm 0cm 0.0001pt;line-height:normal;font-size:11pt;font-family:Calibri,sans-serif"><span style="font-size:12pt;font-family:"Times New Roman",serif;color:black">I printed this balance
as Energy_zone.BAL. When i checked the file B4_QWGAIN is 0 and B$_QSOLAIR is
also 0. Why are they zero?</span><span style="font-size:12pt;font-family:"Times New Roman",serif"></span></p>
<p class="MsoNormal" style="margin:0cm 0cm 0.0001pt;line-height:normal;font-size:11pt;font-family:Calibri,sans-serif"><span style="font-size:12pt;font-family:"Times New Roman",serif;color:black">So, I was wondering what
B4_Qwgain is? ( I am particularly interested in it because i need to calculate
the heat gain through the envelope).</span></p>
<p class="MsoNormal" style="margin:0cm 0cm 0.0001pt;line-height:normal;font-size:11pt;font-family:Calibri,sans-serif"><span style="font-size:12pt;font-family:"Times New Roman",serif;color:black">As per what I have read
from the manual it says, wall gain is something that is fed by the user (can’t
it be calculated by TRNSYS). (Should i feed it when defining the wall type as in fig? (surface gain inside and surface gain inside?)</span><span style="font-size:12pt;font-family:"Times New Roman",serif"></span></p><div><img src="cid:ii_k6q8ybf10" alt="image.png" width="495" height="386"><br></div>
<p class="MsoNormal" style="margin:0cm 0cm 0.0001pt;line-height:normal;font-size:11pt;font-family:Calibri,sans-serif"><span style="color:black;font-family:"Times New Roman",serif;font-size:12pt">My question is how to
calculated the heat gain from the building envelope?</span><br></p><p class="MsoNormal" style="margin:0cm 0cm 0.0001pt;line-height:normal;font-size:11pt;font-family:Calibri,sans-serif"><span style="font-size:12pt;font-family:"Times New Roman",serif"></span></p>
<p class="MsoNormal" style="margin:0cm 0cm 0.0001pt;line-height:normal;font-size:11pt;font-family:Calibri,sans-serif"><span style="font-size:12pt;font-family:"Times New Roman",serif;color:black">I need it because of the
cooling load that I calculated for my system (CHILLED CEILING + DOAS) is too
low as compared to thumb rule calculation.</span></p><p class="MsoNormal" style="margin:0cm 0cm 0.0001pt;line-height:normal;font-size:11pt;font-family:Calibri,sans-serif"><span style="font-size:12pt;font-family:"Times New Roman",serif;color:black">Is my cooling load low due to not keeping any value in geosurf? What value should i use for geosurf?</span></p><p class="MsoNormal" style="margin:0cm 0cm 0.0001pt;line-height:normal;font-size:11pt;font-family:Calibri,sans-serif"><span style="font-size:12pt;font-family:"Times New Roman",serif;color:black">Thanking you in anticipation</span></p><p class="MsoNormal" style="margin:0cm 0cm 0.0001pt;line-height:normal;font-size:11pt;font-family:Calibri,sans-serif"><span style="font-size:12pt;font-family:"Times New Roman",serif;color:black"><br></span></p><p class="MsoNormal" style="margin:0cm 0cm 0.0001pt;line-height:normal;font-size:11pt;font-family:Calibri,sans-serif"><span style="font-size:12pt;font-family:"Times New Roman",serif;color:black">Ashmin Aryal</span></p><div><br></div></div>