服装结构和环境因素对传热的影响
Edgar Garcia Torres1, Agnes Psikuta2, Emiel DenHartog3
1Textile Engineering, Chemistry and Science, North Carolina State University, Raleigh, NC, USA.
International journal of biometeorology
|April 4, 2025
概括
环境因素,如空气层厚度和风速显著影响织物绝缘. 材料的空气透性是关键,但准确的厚度测量对于现实世界的性能评估至关重要.
科学领域:
- 织科学 织科学 织科学
- 热工程是指热工程的工程.
- 材料科学 是一种材料科学.
背景情况:
- 绝缘性能受到环境因素和材料特性的影响.
- 空气层厚度,风速和通风都会影响织物绝缘.
- 材料的空气透性是热调节的一个关键因素.
研究的目的:
- 研究环境变量与绝缘性能之间的相互作用.
- 在不同的条件下,评估材料空气透度对绝缘的影响.
- 评估传统材料厚度测量方法的准确性.
主要方法:
- 使用小型热板,动态热板和加热的干测试装置.
- 系统地检查环境因素 (空气层厚度,风速,通风).
- 评估材料的空气透性及其对绝缘的影响.
- 与ASTM D1777厚度测量与低力方法 (KES压缩试验) 的比较.
主要成果:
- 材料的空气透性与强迫对流热传递有关,需要观察特定的空气层厚度 (5毫米) 和风速 (1.3米/秒).
- 传统的厚度测试 (ASTM D1777) 使用高力,产生不准确的未压缩厚度测量.
- 一个样本显示,高力和低力测量方法之间的厚度差异超过2倍.
结论:
- 准确评估未压缩材料厚度对于预测现实世界的绝缘性能至关重要.
- 标准厚度测量方法可能会高估材料压缩,导致不准确的绝缘数据.
- 了解环境因素和材料特性之间的相互作用对于有效的隔热设计至关重要.
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