将废弃的贝变成可持续的被动辐射冷却膜.
Junghwan Lee1, Dae Kyom Kim1, Daeyul Kwon1
1Department of Advanced Materials Engineering, Chung-Ang University, Anseong 17546, Republic of Korea.
Polymers
|February 13, 2025
概括
这项研究使用贝废物开发了一种可持续的被动辐射冷却 (PRC) 薄膜. 新的PU/D-CaCO3薄膜实现了显著的冷却,降低了高达7°C的温度,提供了一个环保的解决方案.
科学领域:
- 材料科学 材料科学 材料科学
- 可持续工程 可持续工程
- 环境科学 环境科学
背景情况:
- 目前用于被动辐射冷却 (PRC) 的无机材料缺乏可持续性和可回收性.
- 需要环保的冷却解决方案来减少能源消耗和温室气体排放.
研究的目的:
- 开发一种新的,可持续的被动辐射冷却 (PRC) 膜.
- 为了利用废弃物,特别是废弃的贝,用于冷却应用.
- 为了证明开发的中国电影的有效性和环境效益.
主要方法:
- 从废弃的贝 (D-CaCO3) 中提取碳酸 (CaCO3).
- 使用D-CaCO3和聚氨 (PU) 作为基质制造复合膜.
- 通过实验和模拟方法 (FDTD) 描述光学特性 (太阳反射率,红外辐射率) 和热性能.
主要成果:
- PU/D-CaCO3膜在大气窗口中表现出高太阳反射率和95%的发射率.
- 在650W/m2的太阳辐射下,该膜达到比周围环境低7°C的温度.
- 在冷却性能方面表现优于传统的白色油漆和纯 PU,显示出显著的温度差异.
结论:
- 开发的PU/D-CaCO3薄膜提供了一个可持续和环保的被动辐射冷却解决方案.
- 使用海洋废物 (贝) 进行冷却与废物利用和碳捕获目标保持一致.
- 该研究强调了在被动冷却技术中使用海洋衍生材料的商业可行性和环境益处.
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