新型生物基面板的热湿行为研究：实验与数值模拟
DOI:
https://doi.org/10.18686/cncest248关键词:
秸秆复合材料；吸湿性材料；液态水渗透率；热湿耦合传递；逆参数估计摘要
秸秆复合材料因其低碳足迹和良好的热湿性能，正成为一种有前景的建筑替代隔热材料，以促进节能和居住者的舒适度。然而，秸秆复合材料在材料尺度和稳态条件下的热热湿特性不足以全面评估其在实际使用条件下作为建筑构件的性能。本研究重点研究了稻草-海藻酸盐复合材料制成的新型生物基墙体的热湿性能。在不同边界条件下监测了墙内的温度和相对湿度分布。提出了确定液态水渗透率的反演分析方法。在动态测试中，与热湿耦合传递（CHM）模型相比，瞬态传热模型预测的温度分布误差更高，低估了总热通量高达30.6%。此外，在动态条件下，与没有液态水输送的CHM模型预测的结果相比，在28毫米、36毫米和64毫米的深度，具有液态水输送功能的CHM模式的平均绝对误差分别降低了61%、57%和8%。在模拟通过壁的热传递和水分传递时，蒸汽输送和液体输送似乎都是必不可少的。
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