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现行 3359(RP-451)
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Airflow Measurements at Coil Faces with Vane Anemometers: Statistical Correlation and Recommended Field Measurement Procedure 用叶片风速计测量线圈表面的气流:统计相关性和推荐的现场测量程序
介绍了测量通过加热或冷却盘管的空气体积流量的程序。说明当皮托管穿越不可能或不可行时,所描述和验证的旋转叶片风速计程序将提供结果中具有类似不确定性的体积流量。结果表明,该程序可将盘管表面的体积流量估计值控制在7%以内。说明该程序在100至1100 fpm的速度范围内有效,上游干扰,如弯头、部分堵塞的线圈、阻尼器和风扇爆炸,只要测量的速度为正且相对均匀,对使用K系数程序的准确性几乎没有影响。关键词:空气流量,加热线圈,冷却电池,测量,风速计,精确度。 引文:ASHRAE Transactions,第96卷,pt。亚特兰大,1990年。
Presents a procedure for measuring the volume flow rate of air through a heating or cooling coil. States that when a pitot tube traverse is impossible or impractical, the rotating vane anemometer procedure which is described and verified, will provide volume flow rates with similar uncertainty in the results. Shows that the procedure produces estimates of volume flow rate at coil faces to within 7%. States the procedure is valid in a velocity range of 100 to 1100 fpm, and upstream disturbances such as elbows, partially blocked coils, dampers and fan blasts had virtually no effect on the accuracy of using the K-factor procedure as long as the measured velocities were positive and relatively uniform.KEYWORDS: Air flow, heating coils, cooler batteries, measuring, anemometers, accuracy.
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