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KSC/IEC 60364(건축전기설비) 제정에 대한 개요
정용기,신효섭,Jeong, Yong-Gi,Sin, Hyo-Seop 한국전기기술인협회 2003 電力技術人 Vol.246 No.2
우리나라의 산업표준규격인 KS 규격에 건축용 전기설비 부분은 아직까지 국가 규격이 제정되지 않았으나 세계규격중 각국의 큰 관심을 갖고 제정하는 분야가 건축용 전기설비이다. 그 이유는 건축용 전기설비는 교류 1000V이하, 직류 1500V 이하의 고객측 전기설비기준을 국제규격으로 제정하고 있어 각국의 전기공사 방법이나 가전제품 등 일반 전기기기의 제품규격에 상당한 영향을 주고 있기 때문이다.
선회도가 평면화염버너의 유동과 연소 특성에 미치는 영향
정용기,김경천,전충환,장영준,Jeong, Yong-Gi,Kim, Gyeong-Cheon,Jeon, Chung-Hwan,Jang, Yeong-Jun 대한기계학회 2002 大韓機械學會論文集B Vol.26 No.2
In this study, the flow and combustion characteristics of flat flame burner with twirler were investigated. There are several factors that define the characteristics of burner. Among them, the experiments was focused on swirl effect by four types of twirler in terms of flow structure, distribution of temperature and emission characteristics. In PIV(Particle Image Velocimetry) experiment, the less of swirl number, axial flow is dominant at the center. As swirl number increases, the flow develops along the burner tile and backward flow becomes stronger at center. From the combustion characteristics, as long as combustion load increases, blow-off limit was improved. But at the higher swirl number, the limit is decreased. At swirl number 0, the temperature is shown typical distribution of long flame burner. but swirl number increases, the temperature distribution is uniform in front of round tile. Therefore, the temperature distribution is coincided with flow structure. As excess air ratio increases, NO concentrations are high. But high swirl number gives rise to become low NO concentrations. The flame characteristics are comprised in wrinkled laminar-flame regime according to turbulence Reynolds number(Rel) and Damkohler number(Da).