适应温度的辐射涂层用于全季度的家庭热调节
Kechao Tang1,2,3, Kaichen Dong1,2, Jiachen Li2,4
1Department of Materials Science and Engineering, University of California, Berkeley, CA 94720, USA.
概括
这项研究引入了一种全季建筑热调节的新型温度适应辐射涂层 (TARC). 这种智能涂层通过根据环境温度调整其热发射率来优化节能.
科学领域:
- 材料科学
- 建筑物理
- 可持续能源
背景情况:
- 消极辐射冷却利用天空作为建筑物的散热器.
- 目前的屋顶涂层可以在白天优化冷却,但在夜晚或冬天会导致过度冷却和加热成本增加.
- 有效的热调节需要全季度的方法,特别是在需要大量加热的气候中.
研究的目的:
- 开发一个灵活的,适应温度的辐射涂层,为全年建筑节能.
- 创建一个能根据环境温度动态调节热发射的材料.
- 减轻寒冷时期的过度冷却问题,同时保持温暖时期的冷却效益.
主要方法:
- 具有温度依赖的热发射力的机械灵活涂层的制造.
- 使用光子增强的金属绝缘器转换机制进行发射切换.
- 与现有解决方案相比,模拟开发的涂层的节能性能.
主要成果:
- 开发的温度适应辐射涂层 (TARC) 显示了动态热发射切换.
- TARC的发射率从15°C以下的0.20转移到30°C以上的0.90.
- 模拟显示不同气候,特别是具有季节性变化的气候,具有优越的节能潜力.
结论:
- TARC提供了一种被动建筑热管理的创新解决方案.
- 这种适应性涂层有效地解决了静态辐射冷却材料的局限性.
- TARC 显示了减少建筑物全年能源消耗的巨大潜力.
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