相关实验视频

Updated: Jun 8, 2025

Deposition of Porous Sorbents on Fabric Supports

Deposition of Porous Sorbents on Fabric Supports

Published on: June 12, 2018

在室内面料中提前描述VOC扩散:双孔度建模方法

Xiaojun Zhou¹, Weipeng Fang¹, Xuejiao Dong¹

¹School of Human Settlements and Civil Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, China.

Environmental pollution (Barking, Essex : 1987)

|November 6, 2024

概括

室内面料释放挥发性有机化合物 (VOC),恶化空气质量. 一个新的双孔性模型准确地预测了织物中的VOC扩散,有助于室内空气质量评估.

科学领域:

环境科学环境科学
材料科学材料科学材料科学
化学工程是化学工程的重要组成部分.

背景情况:

挥发性有机化合物 (VOC) 是室内空气污染的重要因素.
室内织物通过吸附和脱吸作用,充当VOC的消化器和二次来源.
织物结构极大地影响VOC扩散动态和室内空气质量.

研究的目的:

为了研究室内面料中的VOC扩散特征.
开发一种用于织物中的VOC扩散系数的预测模型.
评估织物特性对VOC吸附和排放的影响.

主要方法:

组织样本的微观结构检查.
质量转移分析以了解VOC运动.
环境室内实验用于验证模型预测.
使用碎形表示的双孔度介质 (DPM) 模型的开发.

主要成果:

线和纤维间隙被确定为双重质量转移通道.
DPM模型准确地预测了VOC扩散系数.
织物结构和成分显著影响VOC吸附和排放.
模型在不同的环境条件和VOC-织物组合下得到验证.

结论:

DPM模型提供了一种全面的方法来预测织物中的VOC扩散.
准确预测VOC扩散对于评估室内空气质量至关重要.
这项研究提供了一种工具,用于评估通过织物介导的人类暴露于VOC的情况.

关键词:

扩散系数扩散系数织物织物织物织物织物室内空气质量室内空气质量质量转移是指质量转移.挥发性有机化合物挥发性有机化合物

更多相关视频

Analyzing the Photo-oxidation of 2-propanol at Indoor Air Level Concentrations Using Field Asymmetric Ion Mobility Spectrometry

Analyzing the Photo-oxidation of 2-propanol at Indoor Air Level Concentrations Using Field Asymmetric Ion Mobility Spectrometry

Published on: June 14, 2018

An Inverse Analysis Approach to the Characterization of Chemical Transport in Paints

An Inverse Analysis Approach to the Characterization of Chemical Transport in Paints

Published on: August 29, 2014

相关概念视频

Porosity in Cement Paste

Porosity in Cement Paste

The porosity of concrete is a measure of the void spaces within its structure. These spaces impact its strength and durability significantly. When water and cement interact, a chemical reaction called hydration creates a semi-solid paste. This paste includes combined water, making up approximately 23% of the cement's dry mass, and gel water, which fills minuscule voids known as gel pores, accounting for about 28% of the cement gel volume.
The balance of water to cement in the mix is...

Porosity and Absorption of Aggregate

Porosity and Absorption of Aggregate

Aggregates contain pores of varying sizes; while some are completely enclosed within the particles, others open onto the surface, allowing water to penetrate. The porosity of aggregates is a major factor contributing to the overall porosity of concrete, given that aggregates constitute about three-quarters of concrete's volume.
When all pores in an aggregate are filled with water, the aggregate is considered saturated and surface-dry. If left in dry air, water will evaporate until the...