Determination method of indoor particle sedimentation parameters based on dynamic mass balance

A mass-balancing, method-determining technique with application in the field of environmental science
CN109799174AInactive Publication Date: 2019-05-24SHANDONG UNIV OF SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHANDONG UNIV OF SCI & TECH
Publication Date
2019-05-24
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a determination method of indoor particle sedimentation parameters based on dynamic mass balance, and belongs to the field of environmental science. The method includes the following steps: firstly, selecting a to-be-measured room, and arranging dust particle counters inside and outside the to-be-measured room as measuring instruments for indoor and outdoor particles; secondly, starting the measuring instruments for synchronous determination; thirdly, obtaining the parameters of indoor and outdoor particle concentration ratios, ventilation times, sedimentation rates andpermeability factors through the dust particle counters and data analysis; and finally, establishing a mass balance equation based on the dynamic balance of particles and calculating to obtain a sedimentation rate Kcomp and permeability P of the to-be-measured room by using a least square method. The determination method of the indoor particle sedimentation parameters based on the dynamic mass balance determines the permeability and the sedimentation rate by using the mass balance equation, which can better understand indoor particle dynamics and behavior under natural ventilation conditionsand helps to analyze the particle size distribution of the indoor particles.
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Description

technical field

[0001] The invention relates to the field of environmental science, in particular to a method for determining indoor particle settling parameters based on dynamic mass balance. Background technique

[0002] According to statistics: people spend about 85-90% of their time indoors every day, so the impact of indoor environmental pollution control on human health is very important. Suspended particulate matter in the outdoor atmosphere generally enters the indoor environment through the building envelope through the gaps in the building, and stays indoors for a long time without settling. Therefore, the indoor particle concentration distribution largely depends on the penetration of these particles through the building envelope and the degree of suspension in the indoor air. Therefore, even in the absence of obvious pollution sources indoors, the indoor particle concentration distribution may not be equivalent to the outdoor particle concentration distribution ...

Claims

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