粉尘质量浓度测试方法的实验研究  

Experimental study of test method for dust mass concentration

作　　者：王智超[1] 吴占松[1] 杨英霞[2] 李剑东[2] 

机构地区：[1]清华大学热能工程系,北京100084 [2]中国建筑科学研究院,北京100013

出　　处：《清华大学学报（自然科学版）》2013年第3期366-370,共5页Journal of Tsinghua University(Science and Technology)

摘　　要：为了使测试粉尘质量浓度的方法和仪器更加简单方便,提出了一种粉尘质量浓度测试方法,并研发了粉尘测试仪。通过实验的方法,对粉尘测试仪采用的涤纶覆膜、1 000目金属滤膜、1 400目金属滤膜3种采样滤膜的过滤特性进行了研究,得出了3种采样滤膜的粉尘质量浓度与滤膜阻力增量之间存在的函数关系,并确定选择1 400目金属滤膜作为粉尘测试仪的采样滤膜。经测试,该粉尘测试仪与称重法测试的粉尘质量浓度误差在10%以内。采用新的测试原理研发的粉尘测试仪可以应用于实际粉尘质量浓度的测试。A method was developed to quickly and easily measure dust mass concentrations. The dust mass concentration monitor was then used to measure the filtration properties of a polyester coated memhrane, a 1 000 mesh metal membrane and a 1 400 mesh metal membrane. The functional relationships between the dust concentration and the resistance of the three sample filter membranes were measured. The 1 400 mesh metal membrane was then chosen as the sampling filter of the dust mass concentration monitor. The results show that dust mass concentration test error of this monitor is less than 10% of the weighing method. This dust concentration monitor can be applied to dust mass concentration detection in any air environment.

关 键 词：粉尘仪 粉尘质量浓度测试 采样滤膜 阻力增量 

分 类 号：TU834.6[建筑科学—供热、供燃气、通风及空调工程]