<div dir="ltr"><div><p class="" style="margin-bottom:0.0001pt"><span style="font-family:Arial,sans-serif;color:rgb(39,78,19)">Dear Experts,</span></p>
<p class="" style="margin-bottom:0.0001pt"><i><span style="font-family:Arial,sans-serif;color:rgb(39,78,19)"> </span></i><span style="font-family:Arial,sans-serif;color:rgb(39,78,19)">I am straggling to
input Fan Power in the baseline model (System 6 - Packaged VAV with PFP Boxes)
and have the following issues:</span></p>
<p class="" style="margin-bottom:0.0001pt"><span style="color:rgb(39,78,19);font-family:Arial,sans-serif">1- In Table 1.4.6 -
General HVAC, there is a note for this type of system that requires</span><br></p>
<p class="" style="margin-bottom:0.0001pt"><span style="font-family:Arial,sans-serif;color:rgb(39,78,19)"> </span><span style="font-family:Arial,sans-serif">“All Baseline fans in parallel VAV
fan-powered boxes sized for 50% of peak primary airflow and modeled with 0.35
W/cfm fan power and a minimum flow setpoint of 30% of peak (or minimum
ventilation rate) per G3.1.3.14”.<span style="color:rgb(39,78,19)"> </span></span></p>
<p class="" style="margin-bottom:0.0001pt"><span style="font-family:Arial,sans-serif;color:rgb(39,78,19)">Supply and return air
of the system are equal, 49,202 cfm for each. Based on this cfm, supply fan
power and return fan power is 17.22 KW (49,202 * 0.35). This number is different
with the figure from ASHRAE 90.1-2007 Baseline Fan Power Calculator (The spreadsheet
from 7group). In addition, when I input the supply and return cfm and 17.22 KW
for both fans in “Table 1.4.7A - Baseline Air-Side HVAC System Schedule”, it indicates
“Allowed Fan Power” to be 55.4 KW and it will be red out with any other numbers
input as system fan power.</span></p>
<p class="" style="margin-bottom:0.0001pt"><span style="font-family:Arial,sans-serif;color:rgb(39,78,19)"> </span><span style="color:rgb(39,78,19);font-family:Arial,sans-serif">2- In eQUEST’s “Fan
Power and Control” screen, the input boxes for supply and return design KW/cfm
are grayed out (n/) and I cannot input any data for the fan powers.</span></p>
<p class="" style="margin-bottom:0.0001pt"><span style="color:rgb(39,78,19);font-family:Arial,sans-serif">As always, I would truly
appreciate your comments,</span><br></p>
<p class="" style="margin-bottom:0.0001pt"><span style="color:rgb(39,78,19);font-family:Arial,sans-serif">Morteza</span><br></p></div><div><br></div><div><br></div><br clear="all"><div><div dir="ltr"><img src="https://lh6.googleusercontent.com/Uuukta80GuFfvKouzA0mdSvUXqml7MtSwSiw-evuGMU=w147-h43-p-no"><br>
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