开发一种加速测试方法,以在加速条件下评估化真空绝缘板的长期热性能
Minjung Bae1,2, Sunsook Kim2, Jaesik Kang1
1Department of Building Energy Research, Korea Institute of Civil Engineering and Building Technology, Goyang 10223, Republic of Korea.
Materials (Basel, Switzerland)
|October 14, 2023
概括
一种新的加速测试方法显著缩短了蒸二氧化真空绝缘板 (VIP) 的评估时间. 这种方法只需70天就能准确预测长期的热性能,简化了VIP质量评估.
科学领域:
- 材料科学 材料科学 材料科学
- 热力工程是热力工程中的一个.
- 建筑科学 建筑科学
背景情况:
- 国际标准要求对真空绝缘板 (VIP) 的长期热性能进行长期的180天加速测试.
- 评估VIP的25年热性能对于建筑物的能源效率至关重要.
研究的目的:
- 开发一种简化,更快速的加快测试方法,用于化的VIP.
- 为了准确预测化VIP的长期热性能.
主要方法:
- 提出了一种高度加速的测试方法,使用80°C和70%的相对湿度 (RH).
- 与现有的加速方法 (50°C和70%RH) 进行比较.
- 分析了内部压力增速,并得出了长期导热率.
主要成果:
- 在高度加速的条件下70天后,内部压力增加率与加速条件下180天相匹配.
- 估计的长期导热率为0.0076 W/m·K (高度加速) 和0.0054 W/m·K (加速).
- 拟议的方法允许大约70天的条件条件可用于可靠的评估.
结论:
- 开发的高度加速方法提供了显著更快的评估化VIP的长期热性能.
- 这种简化方法可以有效地生产具有一致热性质的VIP.
- 在80°C和70%RH下的70天测试是国际标准评估的可行替代方案.
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