Controls and Diagnostics for Air Distribution Systems

[+] Author and Article Information
John M. House

Iowa Energy Center, Energy Resource Station, DMACC, 2006 S. Ankeny Blvd., Ankeny, IA 50021e-mail: jhouse@energy.iastate.edu

Kwangduk Douglas Lee

Massachusetts Institute of Technology, Department of Mechanical Engineering, 77 Massachusetts Ave., #10-007, Cambridge, MA 02139e-mail: douglee@mit.edu

Leslie K. Norford

Massachusetts Institute of Technology, School of Architecture and Planning, Department of Architecture, 77 Massachusetts Ave., #5-418D, Cambridge, MA 02139-4301e-mail: lnorford@mit.edu

J. Sol. Energy Eng 125(3), 310-317 (Aug 04, 2003) (8 pages) doi:10.1115/1.1592185 History: Received December 01, 2002; Revised March 01, 2003; Online August 04, 2003
Copyright © 2003 by ASME
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Grahic Jump Location
Schematic of a variable-air-volume system
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Unstable control resulting from an overly aggressive supervisory control strategy
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Supply fan/return fan ramp on in the morning
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Supply fan/return fan low frequency oscillation
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Supply fan/return fan high frequency oscillation
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Third order polynomial fit of the ramp up portion of the supply fan/return fan real power data
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Variations of the supply fan/return fan power and the supply fan frequency
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Correlation of VSD power for a supply fan and a return fan with higher harmonics of apparent power
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Stability of the seventh harmonic of reactive power as a means of tracking VSD power from a central location, during a period in which a chiller and associated pumps and a cooling tower fan are operated. The tower fan causes the periodic power spikes




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