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Numerical Simulation of Radon Transport and Indoor Air Conditions Effects
Mälardalens högskola, Akademin för hållbar samhälls- och teknikutveckling.
Mälardalens högskola, Akademin för hållbar samhälls- och teknikutveckling.
2012 (engelsk)Inngår i: International journal of scientific and Engineering Research, ISSN 2229-5518, Vol. 3, nr 6, s. 1-10Artikkel i tidsskrift (Fagfellevurdert) [Kunstnerisk arbeiden] 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.

sted, utgiver, år, opplag, sider
2012. Vol. 3, nr 6, s. 1-10
Emneord [en]
Numerical modeling, Radon mitigation, Balanced Ventilation, Residential buildings
HSV kategori
Forskningsprogram
energi- och miljöteknik
Identifikatorer
URN: urn:nbn:se:mdh:diva-16524OAI: oai:DiVA.org:mdh-16524DiVA, id: diva2:575899
Tilgjengelig fra: 2012-12-11 Laget: 2012-12-11 Sist oppdatert: 2018-02-26bibliografisk kontrollert

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