Charge induction-based detection of particulate matter concentration: Effects of environmental parameters on measurement accuracy

IF 4.5 2区工程技术 Q2 ENGINEERING, CHEMICAL

Powder Technology Pub Date : 2025-05-20 DOI:10.1016/j.powtec.2025.121139

Shengyong Lu, Kai Zhang, Yaqi Peng

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引用次数: 0

Abstract

Particulate matter is a primary pollutant generated by waste incineration. This study developed a novel particulate matter concentration detection system based on charge induction principle and investigated the influence of wind speed, temperature, humidity and particle size on measurement accuracy. The detection error decreased with increasing wind speed, temperature, humidity, as well as decreasing particle size. The degree of factors influencing detection accuracy ranked as follows: wind speed > humidity > temperature ≈ particle size. Wind speed primarily affected collision and friction effects and the number of particulate matters passing through the electrode. Temperature and humidity influenced the specific resistance and conductivity of particles, while particle size affected the nucleus-mass ratio and the spatial distribution uniformity at a given mass concentration. This study validates the feasibility of the charge method for particulate matter detection and provides valuable data for the exploration of influencing factors.

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基于电荷感应的颗粒物浓度检测：环境参数对测量精度的影响

颗粒物是垃圾焚烧产生的主要污染物。本研究开发了一种基于电荷感应原理的新型颗粒物浓度检测系统，并研究了风速、温度、湿度和粒径对测量精度的影响。检测误差随风速、温度、湿度的增大和粒径的减小而减小。影响探测精度的因素排序如下：风速>；湿度比;温度≈粒径。风速主要影响碰撞和摩擦效应以及通过电极的颗粒物数量。温度和湿度影响颗粒的比电阻和电导率，而粒径在一定质量浓度下影响核质量比和空间分布均匀性。本研究验证了电荷法检测颗粒物的可行性，为探索影响因素提供了有价值的数据。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Powder Technology 工程技术-工程：化工

CiteScore

9.90

自引率

15.40%

发文量

1047

审稿时长

46 days

期刊介绍： Powder Technology is an International Journal on the Science and Technology of Wet and Dry Particulate Systems. Powder Technology publishes papers on all aspects of the formation of particles and their characterisation and on the study of systems containing particulate solids. No limitation is imposed on the size of the particles, which may range from nanometre scale, as in pigments or aerosols, to that of mined or quarried materials. The following list of topics is not intended to be comprehensive, but rather to indicate typical subjects which fall within the scope of the journal's interests: Formation and synthesis of particles by precipitation and other methods. Modification of particles by agglomeration, coating, comminution and attrition. Characterisation of the size, shape, surface area, pore structure and strength of particles and agglomerates (including the origins and effects of inter particle forces). Packing, failure, flow and permeability of assemblies of particles. Particle-particle interactions and suspension rheology. Handling and processing operations such as slurry flow, fluidization, pneumatic conveying. Interactions between particles and their environment, including delivery of particulate products to the body. Applications of particle technology in production of pharmaceuticals, chemicals, foods, pigments, structural, and functional materials and in environmental and energy related matters. For materials-oriented contributions we are looking for articles revealing the effect of particle/powder characteristics (size, morphology and composition, in that order) on material performance or functionality and, ideally, comparison to any industrial standard.