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Variable Speed Drive Volumetric Tracking (VSDVT) for Airflow Control in Variable Air Volume (VAV) Systems
Abstract
An airflow control method has been developed
for variable air volume (VAV) systems. This airflow
control method is named VSD volumetric tracking
(VSDVT) since both the supply and return airflows
are determined using signals of the variable speed
drives (VSD) instead of the flow stations. Its
performance is studied and compared with the fan
tracking (FT) method using model simulations. The
VSDVT maintains a constant building pressure and
the required outside airflow under all load conditions,
reduces the annual return air fan energy by up to
50%, and the annual supply air fan energy by up to
30%. This paper presents the VSDVT method, the
system models, and the simulation results.
Citation
Liu, M. (2002). Variable Speed Drive Volumetric Tracking (VSDVT) for Airflow Control in Variable Air Volume (VAV) Systems. Energy Systems Laboratory (http://esl.tamu.edu); Texas A&M University (http://www.tamu.edu). Available electronically from https : / /hdl .handle .net /1969 .1 /4573.