한국실내환경학회지
제3권 제1호, March 2006
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ISSN : 1738-4125 (Print)
ISSN : 2287-7509 (Online)
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Measurements of Extremely Low Frequency Magnetic Fields from Electric Appliances in Korean Homes
김윤신,현연주,이철민,최성호,노영만,조용성,홍승철
Abstracts
In this paper, exposure level of electromagnetic field were measured in residential environments and from appliances. First, the measurements of residential environments were taken in central locations in bedroom, living room and kitchen in each home. Both arithmetic mean and geometric mean of normal-power condition are higher than low-power condition(all electrical devices turned off/unplugged), and the background fields in homes show a geometric mean of about 0.022 uT. Second, we measured broadband magnetic fields of domestic appliances at various distances. The highest magnetic field is 44.3 uT from the microwave oven, and the lowest is 1.4 uT from the Kimchi Refrigerator. The magnitude of magnetic fields from appliances dropped off at a rate inversely proportional to distance, but the ratio of drop-off on Korean appliances is lower than USA and U.K.
Keywords:ELF-Magnetic field, Residential exposure, Spot measurement, Electric appliances