http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
한태수(Tae-Su Han),유선학(Sun-Hak Yoo),김용기(Yong-Ki Kim),이태원(Tae-Won Lee) 대한설비공학회 2009 대한설비공학회 학술발표대회논문집 Vol.2009 No.-
Noise is one of the major environmental problems in human life. But hot water distributers with the flow rate control valve bring about often noise according to the heating control condition in residential buildings. The sound power level increased as the flow rate and pressure difference increased. And thus, experimental analyses for the flow rate control and the pressure difference control were carried out in this study to reduce the noise emitted from the flow rate control valve. As the results, the flow rate control method using a SMA(Shape Memory Alloy)-valve and the flow rate control system using a pressure difference sensor can be expected to control noise in the region of below 50 ㏈ of sound power level.
이태원(Tae-Won Lee),김용기(Yong-Ki Kim),장원기(Won-Ki Jang),송문호(Mun-ho Song),호주원(Ju-Won Ho),유선학(Sun-Hak Yoo),김승완(Sueng-Wan Kim) 대한설비공학회 2011 대한설비공학회 학술발표대회논문집 Vol.2011 No.7
The measuring apparatus such as heat meter is legally obliged to be installed and used for heat rating for each dwelling in centralized residential buildings in Korea. Heat meters with mechanical working parts such as impeller, at present widely used in residential buildings in Korea, have caused some critical troubles, such as errors of impeller working, the insensitive response at low flow rate range and so on. For the sake of solving these problems, an electromagnetic heat meter was developed recently in KICT. A field test at the residential building complex were carried out in the present study to verify the influences on reliability of newly developed heat meters in various field conditions such as the pressure in pipe works, temperature and humidity of the installed circumstances, etc.. As results we found that heat meters installed H-apartment houses having been operated confidently in winter season. 2.4~13.8% of heating energy saving was also achieved through the mind inspiration.