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An empirical radon emanation model for residential premises

机译：住宅场所ra的经验排放模型

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Based on an averaging technique, a methodology has been established to estimate an effective radon emanation factor M for residential premises. The model shows that the new term M and the ventilation rate are the essential parameters in estimating the level of indoor radon. M includes two components: the radon emanation rates of internal surface materials and the ratio of surface areas of applicable materials to premises volume. The value of M can be determined from on-site measurements. Different ventilation modes of a sampled residential unit during daytime and nighttime, with air conditioner on, window-open, and window-closed were included in site measurements. Each ventilation mode was measured twice during daytime and twice at night. During the investigation, air exchange rate, and indoor and outdoor radon levels were monitored simultaneously. The results of measurements were then used to verify the model. The value of M was found to be 31.7 Bq m~(-3) h~(-1). The model is valid if the air exchange rate is larger than 0.2 h~(-1).
机译：基于平均技术，已经建立了一种用于估计住宅场所有效ra释放因子M的方法。该模型表明，新项M和通风率是估算室内don水平的必要参数。 M包括两个部分：内部表面材料的ra散发率和适用材料的表面积与房屋体积之比。 M的值可以从现场测量中确定。现场测量中包括白天和晚上采样的住宅单元在空调打开，窗户打开和窗户关闭时的不同通风模式。每种通风模式在白天和晚上两次进行了两次测量。在调查期间，同时监测了空气交换率以及室内和室外outdoor水平。然后将测量结果用于验证模型。发现M的值为31.7 Bq m〜（-3）h〜（-1）。如果空气交换速率大于0.2 h〜（-1），则该模型有效。

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