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提问人:网友13***556 发布时间:2023年8月13日 07:27
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测湿系数值与风速的这种变化关系主要与湿球附近的流场结构有关。当风速较小时,湿球周围为层流状结构,热阻力比较大,热量交换主要以辐射方式进行。随着风速的增大,层流结构逐渐变薄,热阻力减小,对流热交换的强度增大,当风速大于2.5m/s后,湿球周围流场呈湍流结构,热量交换主要靠对流进行,热交换量基本保持不变,测湿系数值就趋于常数。

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