Laboratory Evaluation of the OASys Indirect/Direct Evaporative

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Appendix – Figures Intake Airflow (CFM) Change Relative to 115VAC 1,700 1,600 1,500 1,400 1,300 1,200 1,100 1,000 900 +10% +5% 0% -5% -10% -15% -20% Figure 12: Normalized Performance Sensitivity to Line Voltage -25% 90 95 100 105 110 115 120 125 491-06.12.doc A-1 Line Voltage Damper Closed Figure 13: Intake Airflow Sensitivity to Supply Backpressure High Medium Low y = -684.52x + 1467.6 y = -798.31x + 1287.5 y = -599.38x + 1665.6 y = -751.03x + 1449.3 y = -907.19x + 1277.6 Intake Air at 91°Fdb / 69°Fwb Intake Airflow Speed Power Effectiveness ECER y = -708.51x + 1638.4 800 0.0 0.1 0.2 0.3 0.4 0.5 0.6 Supply External Resistance (IW) Intake Air at 91°Fdb / 69°Fwb Exhaust Damper Open Exhaust Damper Closed
Page 1 and 2: Pacific Gas and Electric Company PY
Page 3 and 4: CONTENTS EXECUTIVE SUMMARY ........
Page 5 and 6: EXECUTIVE SUMMARY Testing was condu
Page 7 and 8: INTRODUCTION Background The increas
Page 9 and 10: humidity), and reach what is called
Page 11 and 12: evaporative cooler and heat exchang
Page 13 and 14: An alternative measure of capacity
Page 15 and 16: 13. Make-up water flow rate, using
Page 17 and 18: Table 3: Test Point Matrix (Highlig
Page 19 and 20: °F 120 110 100 90 80 70 60 50 40 D
Page 21 and 22: combines the effects of airflow, ef
Page 23 and 24: 60 Figure 11: Performance at All Va
Page 25 and 26: Figure 22 and Figure 23 are plots o
Page 27 and 28: high speed. Increasing the outlet r
Page 29: 491-06.12.doc APPENDIX
Page 33 and 34: Appendix - Figures Power (W) Wet-Bu
Page 35 and 36: Appendix - Figures Water Consumptio
Page 37 and 38: 491-06.12.doc A-7 Table 6: OASys T
Page 39 and 40: 491-06.12.doc A-9 Table 6: OASys Te
Page 41 and 42: 491-06.12.doc A-11 Table 6: OASys T
Page 43: 491-06.12.doc A-13 Table 6: OASys T

Laboratory Evaluation of the OASys Indirect/Direct Evaporative

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