<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div>Read the technical documentation for the model. It explains exactly how that model calculates the power consumption from the given parameters and inputs. In the case of the standard variable speed fan, the pressure drop is used to set the exiting air side conditions and should also be taken into account in the given power vs flow parameters. If you change the pressure drop (added resistance for example) you'll need to re-calculate the flow vs power relationship - and may need to change the rated flow and power parameters as well.</div><div id="AppleMailSignature"><br></div><div id="AppleMailSignature">Jeff<br><br>Sent from my iPhone</div><div><br>On Jan 22, 2017, at 5:33 AM, Amirreza Heidary via TRNSYS-users <<a href="mailto:trnsys-users@lists.onebuilding.org">trnsys-users@lists.onebuilding.org</a>> wrote:<br><br></div><blockquote type="cite"><div><div dir="ltr">Why changing the "air-side pressure increase" of a variable speed fan does not have any effect of the fan pressure increse?<br clear="all"><div><div class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div dir="ltr"><div><div style="text-align:right"><div style="text-align:left"><br></div><div style="text-align:left">--------------------------------------------------------------------------------------------------------------------------------------------------<br><img src="https://docs.google.com/uc?id=0B56a_joPrCZuYUg5aFkzTlR2dTg&export=download" width="96" height="96"><br></div><div style="text-align:left;font-size:12.8px"><b><font face="georgia, serif">amirrezaheidary</font></b></div><div style="text-align:left;font-size:12.8px"><i><font color="#444444" face="trebuchet ms, sans-serif">master student of energy systems Engineering</font></i></div><div style="text-align:left;font-size:12.8px"><font color="#444444" face="trebuchet ms, sans-serif"><i>Sharif university of technology</i></font></div><div style="text-align:left;font-size:12.8px"><font color="#444444" face="trebuchet ms, sans-serif"><i>Tehran-Iran</i></font></div><div style="text-align:left;font-size:12.8px"><font face="georgia, serif"><i>E-mail address</i></font><font face="comic sans ms, sans-serif">:</font></div><blockquote style="margin:0px 0px 0px 0.8ex;padding-left:1ex;font-size:12.8px;border-left-color:rgb(204,204,204);border-left-width:1px;border-left-style:solid"><p style="text-align:left"><font color="#1155cc" face="tahoma, sans-serif"><a href="mailto:heidari@energy.sharif.edu" target="_blank">heidari@energy.sharif.edu</a></font></p></blockquote><blockquote style="margin:0px 0px 0px 0.8ex;padding-left:1ex;font-size:12.8px;border-left-color:rgb(204,204,204);border-left-width:1px;border-left-style:solid"><p style="text-align:left"><font face="tahoma, sans-serif" style="color:rgb(17,85,204)"><a style="color:rgb(17,85,204)" href="mailto:sm_mousavi@pwut.ac.ir" target="_blank">a</a><a href="mailto:mirrezaheidarysbu@gmail.com" target="_blank">mirrezaheidarysbu@gmail.com</a></font></p></blockquote><div style="text-align:left"><b style="color:rgb(0,0,0);font-family:"times new roman","new york",times,serif;font-size:small"><span lang="EN-GB" style="color:green;font-family:Webdings">P</span></b><i style="color:rgb(0,0,0);font-family:"times new roman","new york",times,serif;font-size:small"><span lang="EN-GB" style="color:navy"> </span></i><b style="color:rgb(0,0,0);font-family:"times new roman","new york",times,serif;font-size:small"><i><span lang="EN-GB" style="color:green">Save a tree... Please don't print this E-mail unless you really need to.</span></i></b><b><font color="#0000ff"><font size="1"> </font></font></b><br></div><br></div><font color="#0000ff"><font size="1"><br></font></font></div><div><font color="#0000ff"><font size="1"><br></font></font><div><div><font color="#0000ff"><font size="1"><br></font></font></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div>
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