Abstract

This study aims at inhibiting the formation of calcium carbonate in heat exchangers by using guided ultrasonic waves associated with the heterodyne effect of multiple frequencies. To provide a proof of concept, an experimental approach on a plate and joint heat exchanger was considered and complemented by a modeling approach. This study explains how to identify areas susceptible to calcium carbonate deposition. The scaled surface is analyzed using a 3 D digital microscope, the preferential deposition areas are identified and the fraction of the surface occupied by calcium carbonate is determined. In addition, modeling was performed to detect areas sensitive to temperature and fluid flow. The modeling was validated using experimental data from a scaled plate analyzed with a 3 D microscope. As a predictive tool, this model could be particularly useful in identifying effective strategies to mitigate or even eliminate fouling.

摘要

本研究旨在通过使用与多频率外差效应相关的引导超声波来抑制热交换器中碳酸钙的形成。为了提供概念证明，考虑了板式和联合换热器的实验方法，并辅以建模方法。本研究解释了如何识别易受碳酸钙沉积影响的区域。使用 3D 数字显微镜分析缩放表面，确定优先沉积区域并确定碳酸钙占据的表面分数。此外，还进行了建模以检测对温度和流体流动敏感的区域。使用 3D 显微镜分析的缩放板的实验数据验证了建模。作为预测工具，