对不同的气凝隔热建筑墙壁进行比较评估,以提高隔热性能
Jianming Yang1, Huijun Wu2, Yuying Liang3
1School of Automation, Guangdong Polytechnic Normal University, Guangzhou 510665, China.
Gels (Basel, Switzerland)
|December 22, 2023
概括
气凝纤维复合材料 (AFC) 是改善建筑墙壁绝缘的最具成本效益的方法. 与气凝 (AP) 和气凝混凝土 (AC) 相比,AFC提供了优越的热性能,降低了50%的材料成本.
科学领域:
- 建筑科学 建筑科学
- 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.
背景情况:
- 气凝是一种高效的超绝缘材料,用于建筑应用.
- 气凝可以作为气凝石膏 (AP),气凝纤维复合材料 (AFC) 和气凝混凝土 (AC) 纳入建筑墙壁.
研究的目的:
- 确定最有效的气凝形式,以最大限度地提高建筑绝缘性能,同时最大限度地减少材料使用.
- 为了比较建筑墙壁中不同气凝应用形式的热性能.
主要方法:
- 开发并验证了一种集成气凝导热性的电阻容量网络模型.
- 与Fluent模拟软件对模型进行验证,以进行表面温度预测.
- 预测和比较了AP,AFC和AC墙壁的热物理参数,短暂的热特性和传输负载.
主要成果:
- 空气凝纤维复合材料 (AFC) 在添加20毫米的空气凝后,在隔热方面表现出最高的改善 (46.0-53.5%).
- 与其他形式相比,AFC实现了可比的耐热性,节省了大约50%的成本.
- 空气凝 (AP) 和空气凝混凝土 (AC) 的绝缘性能改善低于AFC.
结论:
- 优先考虑AFC用于建筑物中的气凝绝缘,通过减少所需量的气凝来提高经济效率.
- 与AP和AC相比,AFC提供了优越的绝热性能和成本效益.
- 这些发现为理论建模和空气凝绝缘建筑墙壁的实际应用提供了宝贵的见解.
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