Abstract A stable high-temperature condensation particle counter (HTCPC), operating above 170 °C was realized. First a dedicated working fluid was identified in a two-stage process, consisting of a pre-selection based on relevant substance properties and a subsequent experimental evaluation. A prototype for experimental evaluation of the concept was designed and built, supported by CFD simulations considering the properties of the working fluid. The surface tension of the working fluid was measured at different temperatures, revealing higher values than predicted and a specific adhesion to graphite. With a especially developed high-temperature optics module, the proof of principle was verified. Calibration measurements have been performed against an automotive grade CPC. The operation in compliance to the legislative requirements for particle number counters was successfully proven. Copyright © 2020 American Association for Aerosol Research

中文翻译：

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使用系统选择的汽车应用专用工作液的高温冷凝粒子计数器

摘要 实现了一种稳定的高温冷凝粒子计数器 (HTCPC)，可在 170 °C 以上运行。首先在两阶段过程中确定专用工作流体，包括基于相关物质特性的预选和随后的实验评估。在考虑工作流体特性的 CFD 模拟的支持下，设计并构建了用于对该概念进行实验评估的原型。在不同温度下测量工作流体的表面张力，显示出比预期更高的值和对石墨的特定粘附。使用专门开发的高温光学模块，验证了原理。校准测量是针对汽车级 CPC 进行的。成功地证明了符合粒子数计数器立法要求的操作。版权所有 © 2020 美国气溶胶研究协会