基于XPS的复合外墙板整体热工性能

Integral Thermal Performance of Composite External Wallboard Based on XPS

关键词:  热工性能  复合外墙板  挤塑聚苯乙烯泡沫塑料  参数化分析  建筑节能

Key words:  thermal performance  composite external wallboard  extruded polystyrene（XPS）  parametric study  building energy efficiency

摘要:

提出了一种基于挤塑聚苯乙烯泡沫塑料（XPS）的复合外墙板体系，通过防护热箱法对其整体热工性能进行了试验研究，并与同等厚度下传统蒸压加气混凝土（ALC）复合外墙板进行了对比；通过有限元模型对试验结果进行了验证.试验及有限元模拟结果均表明：XPS复合外墙板传热系数较ALC复合外墙板降低了40%左右，XPS复合外墙板展现了更优的热工性能.对XPS复合外墙板的龙骨间距、面层厚度进行了参数化分析，为XPS复合外墙板的优化设计奠定了基础.

Abstract:

A composite external wallboard system based on high performance extruded polystyrene（XPS） was proposed. Its thermal performance was studied by the guard hot box method and compared with the traditional autoclaved lightweight concrete（ALC） composite exterior wallboard under the same thickness. The heat transfer process was simulated by finite element method to verify the test results. Both the test and simulation results show that the heat transfer coefficient of XPS composite external wallboard is about 40% lower than that of ALC composite exterior wallboard， showing better thermal performance. Then the structural parameters such as distance of keel and thickness of the composite external wallboard system were parametrical studied， and the optimal structural parameter combination of the composite external wallboard system was obtained， which laid a foundation for its optimal design.