风量罩罩体阻力对测量结果的影响  

Influence of airflow hood body's resistance on measurement results

作　　者：罗运有[1] 余鹏[1] 冯国强[1] 

机构地区：[1]广东省建筑科学研究院

出　　处：《制冷与空调》2014年第2期63-65,共3页Refrigeration and Air-Conditioning

基　　金：广东省促进科技服务业发展专项计划项目(2011B040300008)

摘　　要：介绍目前风口风量的测量方法和特点,分析风量罩罩体阻力对测量结果的影响,对不同型号的风机盘管机组的送风量进行测试。试验及其不确定度分析表明,风量罩的罩体阻力使得风口风量降低约1.0%,风量罩精度引起的不确定度约为风量罩罩体阻力引起的不确定度的2.5倍。The present measurement methods and characteristics of air outlet volume are introduced. In addition,the influence of airflow hood body＇s resistance on measurement results is analyzed and the air outlet volume of different fan-coil units （FCU） are tested. Based on analysis of testing results and uncertainty,it is found that the airflow hood body＇ s resistance makes the air outlet volume decrease by about 1. 0%. The uncertainty caused by airflow hood＇s manufacturing precision is about 2. 5 times of the one caused by its body＇ s resistance.

关 键 词：风机盘管机组 风量罩 风口风量 阻力 不确定度 

分 类 号：TB663[一般工业技术—制冷工程]