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<p class=MsoNormal>Hello<o:p></o:p></p>
<p class=MsoNormal>I am working with the *.aim file variables and have found an
unexpected impact.<o:p></o:p></p>
<p class=MsoNormal>Using all the same values and only modifying the ACH50 results
in the opposite response I would expect.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Particularly- when I raise the ACH50 the annual zone (I only
have 1 in the model) infiltration air load energy drops.<o:p></o:p></p>
<p class=MsoNormal>As I raise the ACH50 further, it continues to decrease.<o:p></o:p></p>
<p class=MsoNormal>Three test cases:<o:p></o:p></p>
<p class=MsoNormal>ACH50 Annual Air Load(kWh)<o:p></o:p></p>
<p class=MsoNormal>1.5 -6557<o:p></o:p></p>
<p class=MsoNormal>3.5 -1754<o:p></o:p></p>
<p class=MsoNormal>5 -1045<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Thoughts on why an increase in air changes per hour causes
decreased energy consumption?<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Lukas Swan<o:p></o:p></p>
<p class=MsoNormal>Nova Scotia<o:p></o:p></p>
<p class=MsoNormal>Canada<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>#<o:p></o:p></p>
<p class=MsoNormal># AIM-2 input file for CCHT house from HOT2000 inputs<o:p></o:p></p>
<p class=MsoNormal>#<o:p></o:p></p>
<p class=MsoNormal>#---Leakage
description-------------------------------------------------------------------------<o:p></o:p></p>
<p class=MsoNormal>#1 1.50 10 1 523
# blower door input; 1.5 ac/h @50Pa; ELA dP=10Pa; 1=ELA not given; ELA=523.7
cm^2.<o:p></o:p></p>
<p class=MsoNormal>#1 3.50 10 1 523<o:p></o:p></p>
<p class=MsoNormal>1 5 10 1 523<o:p></o:p></p>
<p class=MsoNormal>#
# Set first number to 6 (and no other data) for energy tight house<o:p></o:p></p>
<p class=MsoNormal>#---Leakage
distribution------------------------------------------------------------------------<o:p></o:p></p>
<p class=MsoNormal>1 0.20 0.65 0.15
# Use default leakage distribution.<o:p></o:p></p>
<p class=MsoNormal>#
# Set `1 0.1 0.6 0.2' for user input leakage distribution.<o:p></o:p></p>
<p class=MsoNormal>#---Shielding and terrain
data------------------------------------------------------------------<o:p></o:p></p>
<p class=MsoNormal>3 7 4 2
10.0
# See subroutine /users/ian/src/esp-r/esrubld/aim2.F/AIM2_READIN<o:p></o:p></p>
<p class=MsoNormal>#---Height of building eaves
(m)----------------------------------------------------------------<o:p></o:p></p>
<p class=MsoNormal>2.7<o:p></o:p></p>
<p class=MsoNormal>#---Flue diameters
(mm)-------------------------------------------------------------------------<o:p></o:p></p>
<p class=MsoNormal>0 0. 0. 0. 0. # furnace, fire#1, fire#2, dhw#1, dhw#2.<o:p></o:p></p>
<p class=MsoNormal>#---Zone
indices--------------------------------------------------------------------------------<o:p></o:p></p>
<p class=MsoNormal>1
# Zone whose temperature used to calculate density of indoor air.<o:p></o:p></p>
<p class=MsoNormal>1 1 #
Total number of zones receiving infil; indices of zones receive infil.<o:p></o:p></p>
<p class=MsoNormal>0
# Index of basement zone (=0 if no basement).<o:p></o:p></p>
<p class=MsoNormal>#-----------------------------------------------------------------------------------------------<o:p></o:p></p>
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