Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/23879
Title: An empirical radon emanation model for residential premises
Authors: Tung, TCW
Chan, DWT
Burnett, J
Keywords: Air exchange rate
Effective radon emanation factor
Indoor radon
Radon reduction
Residential premises
Issue Date: 2005
Publisher: Pergamon Press
Source: Building and environment, 2005, v. 40, no. 11, p. 1566-1571 How to cite?
Journal: Building and environment 
Abstract: 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.
URI: http://hdl.handle.net/10397/23879
ISSN: 0360-1323
EISSN: 1873-684X
DOI: 10.1016/j.buildenv.2004.12.012
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