当前位置: X-MOL 学术Int. J. Thermophys. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Quick Determination of Thermal Conductivity of Thermal Insulators Using a Modified Lee–Charlton’s Disc Apparatus Technique
International Journal of Thermophysics ( IF 2.2 ) Pub Date : 2021-05-25 , DOI: 10.1007/s10765-021-02864-3
Ubong W. Robert , Sunday E. Etuk , Okechukwu E. Agbasi , Uduakobong S. Okorie

Assorted potential thermal insulators are fabricated nowadays for possible applications in various fields. Unfortunately, drawbacks like selective suitability, unavailability, and expensiveness hinder the progress in the usage of several devices that are efficient and suitable for probing the thermal conductivity values of such materials. Though the observed challenges can be overcome by using the traditional Lee–Charlton’s Disc (TLD) apparatus, a long-time duration is usually required for the set-up to attain steady state. In this work, a modified Lee–Charlton’s Disc (MLD) apparatus set-up has been designed and put to use. The results showed decrements by 65.66% to 71.87% in the steady-state duration when using the MLD apparatus. By employing the MLD apparatus, thermal conductivity values were determined for thermal insulators with thickness of up to about 9.0 mm. The repeatability and reproducibility of the MLD apparatus satisfied the conditions for unconditional acceptability of a test device/method.



中文翻译:

使用改进的Lee–Charlton圆盘仪器技术快速确定热绝缘体的导热系数

如今,已制造出各种潜在的热绝缘体,以用于各种领域。不幸的是,诸如选择性适用性,不实用性和昂贵性之类的缺点阻碍了使用几种有效且适合于探测这种材料的热导率值的装置的进展。尽管可以通过使用传统的Lee-Charlton圆盘(TLD)设备克服观察到的挑战,但通常需要长时间才能使设备达到稳定状态。在这项工作中,设计并使用了改良的Lee-Charlton光盘(MLD)装置。结果表明,使用MLD仪器时,稳态持续时间减少了65.66%,降至71.87%。通过使用MLD设备,确定厚度不超过9.0 mm的绝热体的热导率值。MLD设备的可重复性和可再现性满足了测试设备/方法的无条件可接受性的条件。

更新日期:2021-05-26
down
wechat
bug