Using Carbon Dioxide as a Tracer Gas to Measure Air Change Rate ...
Using Carbon Dioxide as a Tracer Gas to Measure Air Change Rate ...
Using Carbon Dioxide as a Tracer Gas to Measure Air Change Rate ...
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C(t)<br />
Well Mixed Room Model - Constant<br />
Contaminant Emission <strong>Rate</strong><br />
G + C ⋅ Q ⎡ ⎛ Q + k ⋅ V ⎞⎤<br />
⎛ Q + k ⋅ V ⎞<br />
IN ⎢ ⎜<br />
L ⎟⎥<br />
+ ⎜<br />
L<br />
= 1−<br />
exp − t C exp − t ⎟<br />
Q + k ⋅ V ⎢ ⎜<br />
⎟⎥<br />
⎜<br />
⎟<br />
⎣ ⎝<br />
V<br />
0<br />
⎠⎦<br />
⎝<br />
V<br />
L<br />
⎠<br />
Input Variables<br />
C IN<br />
V m 3<br />
K L<br />
C 0<br />
mg/m 3<br />
G mg/min<br />
Q m 3/min<br />
per min<br />
mg/m 3<br />
Boelter & Yates, Inc. 2004<br />
Concentration in incoming air<br />
Generation <strong>Rate</strong><br />
Exhaust air flow<br />
Volume of Room<br />
Loss Pathway (sinks)<br />
Initial concentration
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