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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4000<br />
3000<br />
2000<br />
1000<br />
0<br />
Ventilation <strong>Rate</strong> - Boilers Off<br />
1.8 <strong>Air</strong> <strong>Change</strong>s Per Hour<br />
March 27, 2003<br />
0 18.75 37.5 56.25<br />
Time in Minutes<br />
Trial 1<br />
Boilers Off - 1.8 ACH<br />
Elementary School<br />
<strong>Carbon</strong> <strong>Dioxide</strong><br />
Concentration<br />
(ppm)<br />
<strong>Carbon</strong> <strong>Dioxide</strong><br />
Concentration<br />
(ppm)<br />
5000<br />
4000<br />
3000<br />
2000<br />
1000<br />
0<br />
Boelter & Yates, Inc. 2004<br />
Average CO2 Concentration vs Time<br />
March 27, 2003<br />
0<br />
2.25<br />
4.5<br />
6.75<br />
9<br />
11.3<br />
13.5<br />
15.8<br />
18<br />
20.3<br />
22.5<br />
24.8<br />
27<br />
29.3<br />
31.5<br />
Time in Minutes<br />
Boilers On<br />
Trial 2 – 3.5 ACH<br />
Trial 3 – 3.9 ACH<br />
Average 3.7 ACH<br />
Trial 2 - Average <strong>Carbon</strong><br />
<strong>Dioxide</strong> Concentrations<br />
with 2 Boilers Operating<br />
Trial 3 - Average <strong>Carbon</strong><br />
<strong>Dioxide</strong> Concentrations<br />
with 2 Boilers Operating
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