Testing device and testing method for determining absolute dust generating quantity of equipment

Abstract

The invention relates to a testing device and a method for determining the absolute dust generating quantity of equipment. The testing device comprises an environment testing cabin, a cyclic purification air assembly, a stirring fan, an equipment platform and an optical particle counter, wherein the environment testing cabin is used for simulating an indoor environment; the cyclic purification air assembly is used for controlling the dust concentration background value of air in the environment testing cabin and comprises a circulating fan, a circulating air supply outlet and a circulating air return outlet, the circulating fan is communicated with the environment testing cabin through the circulating air supply outlet and the circulating air return outlet stirring fan; the stirring fan is hoisted at the center of the environment testing cabin and used for accelerating the air in the environment testing cabin to be evenly mixed; the equipment platform is positioned in the environment testing cabin and used for placing tested equipment; the optical particle counter is connected with the environment testing cabin through sampling holes formed in the side wall of the environment testing cabin, and used for measuring the dust concentration of air in the environment testing cabin. Compared with the prior art, the testing device has the advantages of being high in confidence level, wide in application range and the like.

Description

technical field [0001] The invention belongs to the technical field of indoor air quality, and relates to a test device and method for determining the absolute value of dust generation of equipment. Background technique [0002] People spend most of their time indoors, and the impact of indoor air quality on human health cannot be ignored. With the airtightness of modern buildings getting higher and higher, people's requirements for indoor air quality are also getting higher and higher. Harmful substances in the air can be roughly divided into four categories: dust, gas, heat, and humidity. Dust is the particulate matter dispersed in the gas, which is one of the important indoor air pollutants and an important indicator for evaluating indoor air quality. The main source of indoor particulate matter is indoor dust. [0003] Therefore, in order to effectively control the level of indoor pollutants and improve indoor air quality, it is necessary to study the dust generation ...

AI Technical Summary

Problems solved by technology

[0005] However, whether it is the actual environmental test method or the environmental chamber test method, the instantaneous concentration of particulate matter is usually measured near the equipment during the operation of the equipment. Since the stability of particulate matter emission and the uniformity of particle distribution cannot be determined, therefore The absolute value of the dust generation of the equipment cannot be determined by this concentration value

The concentration value measured in this way will be relatively rough when used to evaluate the dust generation of the equipment, and the reliability when used to guide the formulation of indoor pollutant control strategies will be relatively poor

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