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Numerical Simulation of Radon Transport and Indoor Air Conditions Effects
Mälardalen University, School of Sustainable Development of Society and Technology.
Mälardalen University, School of Sustainable Development of Society and Technology.
2012 (English)In: International journal of scientific and Engineering Research, ISSN 2229-5518, Vol. 3, no 6, 1-10 p.Article in journal (Refereed) [Artistic work] Published
Abstract [en]

Computational fluid dynamics (CFD) is a powerful tool for predicting and visualizing radon content and indoor air quality and is cost effective in comparison with other methods such as full scale laboratory and gas trace techniques. The intention of this article is to use CFD to simulate indoor radon distribution and ventilation effects. In this study a mechanically balanced ventilation system and a continuous radon monitor (CRM) were used to measure the indoor ventilation rate and radon levels. In a numerical approach the FLUENT CFD package was used to simulate radon entry into the building and effects on indoor air conditions. The effects of different ventilation rates, indoor temperature and relative humidity on indoor radon concentrations were investigated in a one family de-tached house in Stockholm. Results of numerical studies indicated that changes of ventilation rate, indoor temperature and moisture by means of ventila-tion systems have significant effects on indoor radon content. Ventilation rate was inversely proportional to indoor radon concentration. Minimum radon levels were estimated in the range of thermal comfort, i.e. at 21 and relative humidity between 50-70%. The analytical solution was used to validate numeric results at 3 distinct air change rates. Comparisons between numerical and analytical results showed good agreement but there was poor agreement between simulations and measurement results due to the short measuring period.

Place, publisher, year, edition, pages
2012. Vol. 3, no 6, 1-10 p.
Keyword [en]
Numerical modeling, Radon mitigation, Balanced Ventilation, Residential buildings
National Category
Engineering and Technology
Research subject
Energy- and Environmental Engineering
Identifiers
URN: urn:nbn:se:mdh:diva-16524OAI: oai:DiVA.org:mdh-16524DiVA: diva2:575899
Available from: 2012-12-11 Created: 2012-12-11 Last updated: 2012-12-14Bibliographically approved

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Akbari, KeramatollahMahmuoudi, Jafar
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CiteExportLink to record
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Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
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Language
  • de-DE
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  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
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Output format
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  • asciidoc
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