Method and system for measuring permeability coefficient of room particulate matter

A technology of permeability coefficient and particulate matter, which is applied in the field of measuring the permeability coefficient of room particulate matter, to achieve the effects of convenient detection process, simplified detection method and accurate detection results

Active Publication Date: 2019-06-21
NANTONG UNIVERSITY
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Problems solved by technology

[0004] In the prior art, there is no method and system for measuring the permeability coefficient of room particles

Method used

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  • Method and system for measuring permeability coefficient of room particulate matter
  • Method and system for measuring permeability coefficient of room particulate matter
  • Method and system for measuring permeability coefficient of room particulate matter

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Embodiment Construction

[0045] The present invention will be further described below in conjunction with embodiment. The following examples are only used to illustrate the performance of the present invention more clearly, and should not be limited to the following examples.

[0046] The embodiments of the present invention measure the permeability coefficient of room particles under the condition of natural convection, wherein natural convection refers to the condition that there is no external driving force but the fluid still moves.

[0047] The particulate matter in the embodiment of the present invention refers to the solid or liquid particulate matter in the atmosphere. The particulate matter that has attracted people's attention is divided into two categories: PM2.5 (fine particulate matter) and PM10 (respirable particulate matter). The diameter of the former does not exceed 2.5 A micron is 1 / 60 of the diameter of a human hair, and the latter is thicker. The particulate matter detected in this...

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Abstract

The invention discloses a method for measuring the permeability coefficient of room particulate matter. The method comprises the following steps: obtaining the air volume data V of the room; detectingand continuously recording the concentration Cin of the particulate matter in the room and detecting and continuously recording the concentration Cout of the particulate matter outside the room; andcalculating and processing according to the formula I on the basis of the air volume data V in the room, the concentration Cin of the particulate matter in the room and the concentration Cout of the particulate matter outside the room so as to obtain the permeability coefficient p of the particulate matter, wherein k is the natural settlement coefficient, Q is the fresh air volume in the room andQc is the air volume of the air purifier. According to the method and the system for measuring the permeability coefficient of the room particulate matter, the concentration of the particulate matterinside and outside the room and the concentration of CO2 in the room are directly detected and then the permeability coefficient of the room particulate matter is obtained through calculation so thatthe detection method is simplified and the detection process is more convenient and the detection result is more accurate.

Description

technical field [0001] The invention relates to the technical field of indoor and outdoor permeability coefficient detection of particulate matter, in particular to a method and system for measuring the permeability coefficient of particulate matter in a room. Background technique [0002] A large number of epidemiological studies have shown that exposure to particulate matter can significantly increase the morbidity and mortality of respiratory and cardiovascular diseases in the population. Therefore, it is necessary to conduct quantitative research on the relationship between indoor and outdoor particulate matter concentrations, especially PM2.5 concentrations, in order to improve the accuracy of population PM2.5 exposure assessment results in epidemiological studies. [0003] The parameters currently used to reflect the relationship between indoor and outdoor particulate matter concentrations include the permeability coefficient, which refers to the ratio of the concentra...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N15/08
Inventor 彭超华喜冠南倪培永田为广周大成范陆健张琦汤钰周磊何明辉左俊臣沈天任
Owner NANTONG UNIVERSITY
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