一、序言确保设计风量是保证空调、通风设备性能的重要条件之一。由于漏风、偏流和阻力等原因,使施工后的风量经常偏离设计风量,所以,施工之后必须测定送风口风量。日本 JIS 推荐,采用吸引方法测定送风口的风量,这种方法的测定精度较高。但是,吸引方法测定风量时,装置大;测量过程麻 I. Introduction The design of air volume is one of the important conditions for ensuring the performance of air conditioning and ventilation equipment. Due to air leakage, biased flow, and resistance, the air volume after construction often deviates from the design air volume. Therefore, the air volume at the air outlet must be measured after construction. Japan JIS recommends using the suction method to measure the air volume at the air outlet. This method has high accuracy. However, when the air volume is measured by the suction method, the device is large;