Development of In Situ Fan Curve Measurement for VAV AHU Systems

[+] Author and Article Information
M. Liu, G. Liu, I. Joo, L. Song, G. Wang

Energy Systems Laboratory, Architectural Engineering, University of Nebraska, 1110 S 67th Street Omaha., NE 68182

J. Sol. Energy Eng 127(2), 287-293 (Apr 25, 2005) (7 pages) doi:10.1115/1.1849226 History: Received April 27, 2004; Revised July 18, 2004; Online April 25, 2005
Copyright © 2005 by ASME
Topics: Air flow , Errors , Pressure
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Relationship of measured points and the “desired” point at full fan speed
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Schematic diagram of the AHU for the laboratory experiment
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Comparison of fan curves identified by direct and in situ methods (CV=2.1%)
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Schematic diagram of the AHU in the full scale experiment
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Measured airflow and fan head under partial fan speeds (fan speed varied from 394 to 467 rpm)
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Dimensionless fan curve comparison
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Error range for the fan head measurement
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Error range for the airflow measurement




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