【摘 要】
：
建立以相对湿度和温度为驱动势的热湿耦合传递数学模型,并对模型准确性进行验证。以松木板和混凝土为例,利用所建数学模型对其在不同热湿环境下进行计算分析,结果发现:松木板
【机 构】
：
西安建筑科技大学环境与市政工程学院,
论文部分内容阅读
建立以相对湿度和温度为驱动势的热湿耦合传递数学模型,并对模型准确性进行验证。以松木板和混凝土为例,利用所建数学模型对其在不同热湿环境下进行计算分析,结果发现:松木板的吸放湿性明显强于混凝土,湿流量为混凝土的5.3倍;考虑与未考虑传湿情况相比,松木板内表面温度低1.1℃,混凝土仅低0.2℃;在考虑传湿情况下,松木板内表面潜热热流占总热流的45%,而混凝土内表面潜热热流仅占总热流的8.3%。
A mathematical model of heat and moisture coupling with relative humidity and temperature as the driving force is established, and the model accuracy is verified. Take pine board and concrete as an example, using the mathematical model to calculate and analyze it under different heat and moisture environment, the results show that pine board absorbs and releases moisture obviously better than concrete and the wet flow rate is 5.3 times that of concrete; Considering the moisture transfer, the internal temperature of pine board is 1.1 ℃ lower than that of concrete, and the concrete is only 0.2 ℃ lower. Under the condition of moisture transfer, the latent heat of internal surface of pine board accounts for 45% of the total heat flow, while the latent heat of internal surface of concrete accounts for only 8.3% of total heat flow.
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