关于可持续的双生物质复合材料相变材料的实验研究,用于节能建筑应用
Zhiwei Sun1, Wei Wen2, Jiayu Wu1
1School of Civil and Transportation Engineering, Ningbo University of Technology, Ningbo 315016, China.
Materials (Basel, Switzerland)
|August 14, 2025
概括
这项研究引入了一种新的双生物质相变材料 (PCM),使用废脂和草. 这种环保材料为建筑应用中的储能提供了出色的热性能.
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
- 热力工程是热力工程中的一个.
背景情况:
- 阶段变换材料 (PCM) 提高了建筑的热性能,但面临成本和泄漏挑战.
- 废弃的油和草是丰富的,低成本的资源,具有物质开发的潜力.
- 开发形状稳定PCM (SSPCM) 对于实际的热能存储应用至关重要.
研究的目的:
- 开发一种新的,具有成本效益和环保的基于双生物质的稳定形状的相变材料 (Bio-SSPCM).
- 为了利用废弃的脂作为相变物质和废弃的草作为支矩阵.
- 评估开发的Bio-SSPCM在建筑中的热性能和潜在应用,用于储能.
主要方法:
- 废弃的草被碳化,以创建一个多孔的生物碳支持矩阵.
- 废弃的脂被真空吸收到生物炭基质中,形成生物-SSPCM.
- 扩张石墨 (EG) 被添加,以提高导热性.
- 采用模拟T-历史方法来描述Bio-SSPCM的热特性.
主要成果:
- 双生物SSPCM的潜热容量为25.4 J/g.
- 添加4%重量的膨胀石墨使导热率提高到1.132W/m·K,比纯油脂提高了5.4倍.
- 生物-SSPCM展示了出色和快速的热储和外热能力.
- 该材料的点范围为21.2-41.1°C.
结论:
- 开发的双-Bio-SSPCM,来自废弃的脂和草,是热能存储的有希望的可持续材料.
- 这种方法与循环经济原则保持一致,通过将废弃材料提升为功能性建筑部件.
- 生物SSPCM提供了一个潜在的解决方案,以克服与传统PCM相关的成本和泄漏问题.
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