http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
개별검색 DB통합검색이 안되는 DB는 DB아이콘을 클릭하여 이용하실 수 있습니다.
통계정보 및 조사
예술 / 패션
<해외전자자료 이용권한 안내>
- 이용 대상 : RISS의 모든 해외전자자료는 교수, 강사, 대학(원)생, 연구원, 대학직원에 한하여(로그인 필수) 이용 가능
- 구독대학 소속 이용자: RISS 해외전자자료 통합검색 및 등록된 대학IP 대역 내에서 24시간 무료 이용
- 미구독대학 소속 이용자: RISS 해외전자자료 통합검색을 통한 오후 4시~익일 오전 9시 무료 이용
※ 단, EBSCO ASC/BSC(오후 5시~익일 오전 9시 무료 이용)
An experimental investigation on the characteristics of nitrogen oxide emission from swirling was conducted using multi air staged combustor. The combustor utilizes swirler to dampen fuel/air mixing, allowing an extended residence time for fuel conversion chemistry in an locally fuel-rich environment prior to burnout. This process also allow to reduce thermal NOx formation to lessen the temperature of reaction zone.<br/> Parametric studies of ratios of each staged air were carried out the feasibility of fuel/air mixing for low NOx combustion. This study is validated to reduce NOx. suppressing to be supplied air in multi air staged combustion.
The combustion characteristic of 5㎿ class gas turbine engine with varying biogas concentration has been investigated at different engine operation regimes. The test was carried out in the gas turbine combustor test facility at Doosan Heavy Industries & Construction Co., Ltd. The results show that NOx emissions decreases with reduction in CH₄ concentration. However, CO emission results show the opposite trend compared with those of NOx emissions. In overall, the performance test result of the designed biogas combustor was considered successful satisfying the design targets.
The Flame length of CH₄ with the Oxidizer of air and O₂ has been measured respectively for the nozzle diameter of 1.6㎜, 2.7㎜, 4.4㎜ and 7.7㎜. In all CH₄ flame on oxidizer of air and O₂, the flame length was independent of the initial jet diameter, dependent only on the flowrate in laminar flame regime, and in turbulent flame dependent on the initial jet diameter. Using correlation equation of Dellchatslos, the flame length has been expected exactly for CH₄/air flame, but has been underestimated for CH₄/O₂ flame. This paper has proposed correlation equation of CH₄/O₂ flame.
Effects of oxidizer inlet velocity on NO emission characteristics of 0.2㎿ oxy-fuel combustor have been experimentally investigated. The NO formation process in the oxy-fuel combustion is extremely sensitive even for the small fraction of nitrogen in oxidizer. By increasing the oxidizer velocity, flame length is reduced due to the enhanced turbulent mixing. The increased oxidizer velocity also results in the decreased flame temperature through the elevated entrainment rate of the recirculated product and the corresponding NO emission is drastically decreased. Experimental results clearly indicate that the entrained product gases play a crucial role to decrease the temperature at the flame zone and the post flame zone where the thermal NO is mainly formed.