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Terminal Box Airflow Reset: An Effective Operation and Control Strategy for Comfort Improvement and Energy Conservation
Abstract
A new terminal box operation and control
strategy, airflow reset, is developed to improve
building comfort and energy efficiency during
unoccupied and lightly occupied hours. The airflow
reset lowers the minimum airflow possibility to zero
for variable air volume (VAV) terminal boxes, and
changes the airflow to a lower value for constant air
volume terminal boxes (CV). It maintains zone
temperatures at comfortable levels or daytime set
points during unoccupied or lightly occupied hours. It
decreases heating, cooling, and fan power
significantly. A case study measured 40% of the
design airflow reduction in the Air Handling Unit
level. This paper presents airflow reset strategies,
potential heating and cooling energy savings models,
and implementation issues.
Citation
Liu, M.; Abbas, M.; Zhu, Y.; Claridge, D. E. (2002). Terminal Box Airflow Reset: An Effective Operation and Control Strategy for Comfort Improvement and Energy Conservation. Energy Systems Laboratory (http://esl.tamu.edu); Texas A&M University (http://www.tamu.edu). Available electronically from https : / /hdl .handle .net /1969 .1 /4538.