Quantifying Argon Concentration within Insulating Glass Units using Low Frequency Ultrasonic Technique
Abstract
Insulating glass units (IGUs) account for over 30% of thermal transmission losses in building envelopes. To mitigate this, IGUs are often filled with low-conductivity gases like Argon. However, Argon concentration decreases over time due to IGU aging and manufacturing processes, which lessens their insulating effectiveness. This study presents a novel nondestructive methodology to quantify Argon concentration in IGUs using ultrasonic technique. The ultrasonic energy transmitted through the IGU is correlated with Argon concentration, validated through both experimental measurements and numerical models using COMSOL Multiphysics. The models simulate acoustic-structure interaction by adjusting gas density to reflect Argon presence, showing increased ultrasonic energy with higher Argon concentrations. Experimental measurements on two IGU samples with twenty Argon-air mixtures (ranging from 100% to 25% Argon) show that the proposed ultrasonic technique achieves a mean absolute error of 0.13, outperforming Spark Emission Spectroscopy and Helantec ISO-GAS-Control, which have errors of 2.31 and 0.33, respectively.
Cite
@article{arxiv.2501.10317,
title = {Quantifying Argon Concentration within Insulating Glass Units using Low Frequency Ultrasonic Technique},
author = {Hamed Khaleghi and Parisa Salehi and Chenxi Xu and Didem Ozevin and Aslihan Karatas},
journal= {arXiv preprint arXiv:2501.10317},
year = {2025}
}
Comments
This version of the paper lacks essential data and discussions that are crucial for accurately conveying the study's findings. Due to the significance of the missing content, a minor revision would not be sufficient to address these gaps. Therefore, I am withdrawing the paper to prevent potential misinterpretations