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Noise Characteristics of Air Cleaners and Humidifiers
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 Title & Authors
Noise Characteristics of Air Cleaners and Humidifiers
Kim, Yong Hee; Park, Ji Hoon;
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This study investigated noise characteristics of air cleaners and humidifiers in terms of frequency domains and measurement directions. Noise levels of 31 air cleaners and 36 humidifiers were measured in an anechoic chamber according to the related group standards. As for air cleaners, 5 receiving points of 1 m off from front, rear, left, right and top surfaces of the product were considered. In case of humidifiers, 4 receiving points without the rear position were considered in the same manner as air cleaners. In each case, A-weighted equivalent continuous sound level was measured three times for 1 min. As a results, most of the measured air cleaners and humidifiers showed the highest noise levels at top directions due to the air ventilating location. In case of air cleaners, averaged noise levels of top and rear positions were 49.9 and 48.2 dB(A), respectively, whereas averaged noise level of other positions was all 45.2 dB(A). In case of humidifiers, averaged noise level of top position was 44.1 dB(A) whereas averaged noise levels of other positions were 38.7 to 39.1 dB(A). In addition, high frequency content of 1 kHz and 3.15 kHz to 4 kHz for air cleaners and middle frequency content of 500 Hz to 1.6 kHz for humidifiers showed significant contribution to determination of overall noise levels with correlation coefficient of 0.9 and above.
Noise;Air Cleaner;Humidifier;
 Cited by
Park, J. W., Jung, Y. Y. and Jeon, W. H., 2006, Study on the Flow Noise Generated from the Air-cleaner Auto Louver by Changing Angle, Proceedings of the KSNVE Annual Spring Conference, pp. 1007-1010.

Park, J. W., Lee, J. H. and Kim, W., 2006, Numerical Analysis on the Flow Noise of the Air-cleaner, Proceedings of the Annual Conference of Korean Society for Fluid Machinery, pp. 209-212.

Jang, S. W., 2007, A Study on the Sound Quality Evaluation Model for an Air Cleaner, M.Eng. Thesis, Korea Advanced Institute of Science and Technology.

KS C 9314, 2013, Air Cleaners, Korean Industrial Standards.

KS C 9320, Abolished in 2002, Electrical Humidifiers, Korean Industrial Standards.

SPS-KACA002-132, 2006, Indoor Air Cleaners, Korea Air Cleaning Association.

KARSE B 0050, 2010, Indoor Humidifier, Korea Air Cleaning Association & Korean Association of Air Conditioning Refrigerating and Sanitary Engineers.

JEM 1467, 2013, Air Cleaners of Household and Similar Use, Japan Electrical Manufacturers' Association.

JEM 1426, 1991, Electric Humidifiers, Japan Electrical Manufacturers' Association.

ANSI/AHAM AC-1-2006, Method for Measuring Performance of Portable Household Electric Cord-connected Room Air Cleaners, American National Standards Institute & Association of Home Appliance Manufacturers.

ANSI/AHAM HU-1-2006, 2011, Household Humidifiers, American National Standards Institute & Association of Home Appliance Manufacturers.

KS C IEC 60704-1, 2012, Household and Similar Electrical Appliances - Test Code for the Determination of Airborne Acoustical Noise - Part 1: General Requirements, Korean Industrial Standards.