Model based economizer control of an air handling unit
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United States of America Patent
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Jul 9, 2002
Grant Date -
N/A
app pub date -
Jan 10, 2001
filing date -
Jan 10, 2001
priority date (Note) -
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status (Latency Note)
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Abstract
A strategy for controlling an air side economizer of an HVAC system uses a model of the airflow through the system to estimate the load in two modes when minimum and maximum amounts of outdoor air are being introduced into the building. Transitions between minimum outdoor air and maximum outdoor air usage occur based on those estimated loads, which in a preferred embodiment are cooling loads. The second embodiment of this economizer control strategy uses the model and a one-dimensional optimization routine to determine the fraction of outdoor air that minimizes the load on the HVAC system.
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