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Effects of Heat Recovery Ventilation Systems on Indoor Radon
Mälardalens högskola, Akademin för hållbar samhälls- och teknikutveckling.
Mälardalens högskola, Akademin för hållbar samhälls- och teknikutveckling.
2012 (engelsk)Inngår i: PROCEEDINGS OF ECOS 2012 - THE 25TH INTERNATIONAL CONFERENCE ON EFFICIENCY, COST, OPTIMIZATION, SIMULATION AND ENVIRONMENTAL IMPACT OF ENERGY SYSTEMS / [ed] ECOS, 2012, , s. 10s. 1-10Konferansepaper, Publicerat paper (Fagfellevurdert) [Kunstnerisk arbeiden]
Abstract [en]

A heat recovery ventilation system enables us to control indoor conditions such as ventilation rate,

temperature, relative humidity and pressure difference. These environmental conditions affect indoor radon

levels.

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.

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 detached house in Stockholm. Results of numerical studies

indicated that changes of ventilation rate, indoor temperature and moisture by means of ventilation 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. , s. 10s. 1-10
Serie
Centrum för välfärdsforskning / Arbetsrapport, ISSN 1104-6384
HSV kategori
Identifikatorer
URN: urn:nbn:se:mdh:diva-16525OAI: oai:DiVA.org:mdh-16525DiVA, id: diva2:575911
Konferanse
THE 25TH INTERNATIONAL CONFERENCE ON EFFICIENCY, COST, OPTIMIZATION, SIMULATION AND ENVIRONMENTAL IMPACT OF ENERGY SYSTEMS JUNE 26-29, 2012, PERUGIA, ITALY
Tilgjengelig fra: 2012-12-18 Laget: 2012-12-11 Sist oppdatert: 2012-12-18bibliografisk kontrollert

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