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Supply Fan Speed Control Optimization Using a Fan Airflow Station

机译:使用风扇气流站优化风扇转速控制

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摘要

This paper provides an overview of the typical variable speed drive (VSD) control for the supply fan in a variable airflow volume(VAV) system. Two new control methods using the fan airflow station (FAS) are presented in this paper. In the first method, the supply fan speed is controlled to maintain a constant system resistance, which is calculated based on the measured fan head, and airflow, which is calculated by the FAS. In the second method, the supply fan speed is controlled to maintain the duct static pressure set point, which is reset based on the airflow ratio measured by the FAS. The innovative methods can be applied to systems with either direct digial control (DDC) or pneumatic control boxes. The case studies show that the new control method can significantly save supply fan power and increase fan efficiency.
机译:本文概述了可变风量(VAV)系统中送风风扇的典型变速驱动(VSD)控制。本文介绍了两种使用风扇气流站(FAS)的新控制方法。在第一种方法中,控制送风风扇的速度以保持恒定的系统阻力(该阻力是根据测得的风扇头计算得出的)和气流(由FAS计算得出的)。在第二种方法中,控制送风风扇的速度以保持管道静压设定点,该设定点将根据FAS测得的气流比率进行重置。创新的方法可以应用于带有直接数字控制(DDC)或气动控制箱的系统。案例研究表明,新的控制方法可以显着节省风扇电源并提高风扇效率。

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