29 KB476 KB32 KB199920252000Chow, Tin-taiLin, ZhangWong, T.C.letnik:46številka:79 stranistr. 466-474ISSN:0039-2480COBISSID:4170523URN:URN:NBN:SI:doc-YRMKWKD1enslAssociation of Mechanical Engineers and Technicians of Slovenia et al.Zveza strojnih inženirjev in tehnikov Slovenije et al.Strojniški vestnikanalizebivalno okoljekoncentracije radonamateriali gradbeniprezračevanjeprezračevanje prostorovradonKoncentracija radona v prezračevanih notranjih prostorih v Hong Kongu| The radon concentration in a ventilated indoor space in Hong Kong|The radon emanation rate has been found to be much higher for building materials from Hong Kong compared with those from other places. Exposure to high radon levels poses a serious health risk. For the purpose of carrying out a worst-case analysis of the indoor radon concentration it was assumed that no finishing materials are applied to the floor, walls and ceiling. The level of indoor radon radiation in the air is studied by hand calculation and Computational Fluid Dynamics simulation using different air exchange rates to evaluate the influence of ventilation rate on the indoor-air radon level. Results show that the ventilation rate plays a very important role in controlling the indoor radon concentration. It is concluded that radon in offices is, in general, not a major factor when considering ventilation rate, although it is always advisable to keep the radon level as low as practically possibleStopnja izločanja radona je veliko večja za gradbene materiale iz Hong Konga v primerjavi z materiali iz drugih območij. Izpostavljanje visokim stopnjam sevanja radona pomeni resno ogrožanje zdravja. Za namen izpeljave analize notranje koncentracije radona je bilo predpostavljeno, da se ti materiali pojavljajo na tleh, stenah in stropu. Stopnjo notranjega sevanja radona v zraku lahko določimo "ročno" in s simuliranjem dinamike fluida, tako da z različnimi stopnjami izmenjavanja zraka izračunamo vpliv stopnje ventilacije na količino radona notranjega zraka. Rezultati kažejo, da stopnja prezračevanja igra pomembno vlogo pri nadzoru notranje koncentracije radona. Radon v pisarnah v splošnem ni glavni dejavnik pri določanju stopnje prezračevanja, čeprav je priporočljivo obdržati čim nižjo stopnjo le-tegaTEXTznanstveno časopisjejournalsSlovenian National E-content AggregatorNational and University Library of SloveniaUniverza v Ljubljani, Fakulteta za strojništvo