• The Magazine of the Society of Air-Conditioning and Refrigerating Engineers of Korea
• /
• v.26 no.6
• /
• pp.472-480
• /
• 1997

• Korean Journal of Air-Conditioning and Refrigeration Engineering
• /
• v.19 no.4
• /
• pp.346-354
• /
• 2007

Recently, in accordance with the buildings are rapidly becoming to high-stories, large-sizes, and since the case that noise of equipment machinery, tool itself infringes the life environment is on increasing, this is becoming to the object of civil appeal. Accordingly, in order to set up a countermeasure against such equipment machinery noise, even a systemic evaluating method is required, up to now while the appraisal that considering on the physical characteristic only had been done, but the characteristic about subjective valuation was not reflected as yet. Therefore, in this research, through the 1st, 2nd Psycho-Acoustics Experiments, the 30 vocabularies were extracted for evaluation of the construction equipment noise. As the result of Element Analysis, the 3 Elements were extracted from these vocabularies, and it could be understood that these Elements have been trustfully selected. It is now considering that the extracted vocabularies as per the above result would be used to Psycho-Acoustic Evaluation on Equipment Noise, and Psycho-Acoustics Experiment.

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
• /
• 2001.11a
• /
• pp.120-126
• /
• 2001

The study was performed as reduction plan on drainage noise in a toilet, which of noise in plumbing systems was being indicated the major point at issue in apartment houses. The reduction plan is four items, which are water closet, isolating system for the base of water closet, low noise drainpipe, and a ceiling tex. Through the result of experiment, it was showed that noise reduction is about 9dB(A) within a toilet and above 5dB(A) in a bedroom.

• Proceedings of the Korean Society of Precision Engineering Conference
• /
• 2006.10a
• /
• pp.283-284
• /
• 2006

• Proceedings of the SAREK Conference
• /
• 2004.06a
• /
• pp.116-116
• /
• 2004

• Proceedings of the SAREK Conference
• /
• 2004.06a
• /
• pp.113-113
• /
• 2004

• Proceedings of the SAREK Conference
• /
• 2004.06a
• /
• pp.117-117
• /
• 2004

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
• /
• 2006.05a
• /
• pp.107-109
• /
• 2006

Since the apartment was built in 1961, the amount of its supply has been increased greatly, especially from the late 70's. The ratio of apartment housing to detached housing was already over 65% in 2000, and now the apartment becomes the most general type in domestic dwellings. But from 90's, the residents of apartment housing have been dissatisfied with the indoor noises and have issued civic petitions. Some national assemblymen front new towns where a high rise apartment is common are interested in This problem, and promise that they try to solve it. The government has also enacted the related regulations. This paper presents the present state and action plans of indoor noise in dwellings. Details on these will be demonstrated at the presentation.

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
• /
• 2000.06a
• /
• pp.165-171
• /
• 2000

The study about a drainpipe of water closet was performed as reduction plan on drainage noise for water closet, which of noise in plumbing systems was being indicated the major point at issue in apartment houses. A drainpipe of water closet is divided into a sleeve, a joint elbow and a traversing pipe, through the result of experiment, for an effective noise reduction in a drainpipe a threefold joint elbow is proposed among parts. And through the experiment of performance with glasswool, the removal of glasswool should be in the economical efficiency aspect.

• Transactions of the Korean Society for Noise and Vibration Engineering
• /
• v.17 no.3 s.120
• /
• pp.226-234
• /
• 2007

This study aims to evaluate noise emission from water supply and drain installations in apartment bathroom. These noise were one of the most annoying noise sources in apartment houses. Especially, drain plumbing system have used bellow bathroom ceiling, it was very discomfort to hear the noise in bellow apartment. Noise of closets and faucets were measured which were main noise source, then these noise were evaluate and analyzed the emitting characteristics varying the supplying water pressure. As increasing the water pressure, also total noise level of the water supplying stool noise and faucet noise were increased. Especially the water closet showed remarkably the increasing noise level in middle and high frequency bandwidth, while the noise level of faucets increased in $50\;Hz{\sim}250\;Hz$ of low frequency bandwidth. Vortex closet were favorable to syphon closet, and lever faucet were favorable to conventional lavatory faucet on reducing the noise. Above these results could be used in basic data establishing KS (Korean Standard) for evaluation and rating procedure and measures reducing these noise.