Laboratory Evaluation of the OASys Indirect/Direct Evaporative
Laboratory Evaluation of the OASys Indirect/Direct Evaporative
Laboratory Evaluation of the OASys Indirect/Direct Evaporative
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Appendix – Figures<br />
Exhaust Airflow Fraction <strong>of</strong> Intake (%)<br />
70<br />
60<br />
50<br />
40<br />
30<br />
20<br />
10<br />
Supply External Resistance (IW)<br />
0.6<br />
0.5<br />
0.4<br />
0.3<br />
0.2<br />
0.1<br />
Figure 14: Supply Backpressure versus Supply Airflow<br />
High<br />
Medium<br />
Low<br />
0.0<br />
0 200 400 600 800 1,000 1,200 1,400 1,600<br />
High<br />
Medium<br />
Low<br />
Supply Airflow (CFM)<br />
491-06.12.doc A-2<br />
Exhaust Damper Open<br />
Exhaust Damper Closed<br />
Intake Air at<br />
91°Fdb / 69°Fwb<br />
Figure 15: Exhaust Airflow Fraction versus Supply Airflow<br />
0<br />
0 200 400 600 800 1,000 1,200 1,400 1,600<br />
Supply Airflow (CFM)<br />
Intake Air at<br />
91°Fdb / 69°Fwb<br />
Exhaust Damper Open<br />
Exhaust Damper Closed
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