http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
LNG 선박용 spring load 안전방출밸브의 유량 성능시험
박경암(Kyung-Am Park),이생희(Saeng-Hee Lee),김경권(Keng-Kuen Kim),고장훈(Jang-Hoon Goh) 한국유체기계학회 2006 유체기계 연구개발 발표회 논문집 Vol.- No.-
Many LNG ships will be constructed in Korea and the demand of safety valves is increasing. The most important performance of the developed safety relief vales for LNG ship is flow capacity. Flow capacity tests for 8 sizes of developed safety valves were conducted in the high pressure gas flow standard system in KRISS. The initial spring force adjustment was important for setting pressure of the safety valve. The procedure of data reduction and evaluation of the safety valve performance are suggested. This procedure was approved by French Bureau Veritas and Lloyd’s Register.
최해만,박경암,Choi, Hae-Man,Park, Kyung-Am 한국유체기계학회 2003 한국유체기계학회 논문집 Vol.6 No.2
The piston prover was developed and the flow measurement uncertainty of this piston prover was evaluated according to ISO/IEC 17025. The laser interferometer, instead of the optical sensors used in the typical provers, was employed in this prover to measure accurately the testing time and the moved distance of the piston. Uncertainty was calculated with evaluation of various uncertainty factors affecting flow measurement. The expanded uncertainty (U) of the piston prover was $1.3{\times}10^{-3}$ (at the confidence level of $95\%$). This evaluation example will be useful in the flow measurement uncertainty determination of other gas flow measurement system.
차지선,박경암,최용문,최해만,윤복현,Cha, Tsi-Sun,Park, Kyung-Am,Choi, Yong-Moon,Choi, Hae-Man,Yoon, Bok-Hyun 한국유체기계학회 2000 한국유체기계학회 논문집 Vol.3 No.2
Small sonic nozzles (throat diameter $0.28{\~}4.48mm$) were tested in the gas flow standard system. This standard system is composed of two bell provers and 5 column piston provers, compressor, filters, and dehumidifier. The discharge coefficients of small some nozzles are obtained and correlated as a function of throat Reynolds numbers with $0.316\%$ uncertainty at a confidence level $95\%$. The tested high Reynolds number was the lower limit of ISO 9300 specifications. The data are useful as data base for revision of ISO 9300.
김건순,정완섭,권휴상,박경암,백종승,유성연,Kim, Kun-Soon,Cheung, Wan-Sup,Kwon, Hyu-Sang,Park, Kyung-Am,Paik, Jong-Seung,Yoo, Seong-Yeon 대한기계학회 2000 大韓機械學會論文集B Vol.24 No.7
This paper addresses a new technique of measuring the mean flow velocity over the cross sectional area of the pipe using sound field reconstruction. When fluid flows in the pipe and two plane waves propagate oppositely through the medium, the flow velocity causes the change of wave number of the plane waves. The wave number of the positive going plane wave decreases and that of negative going one increases in comparison to static medium in the pipe. Theoretical backgrounds of this method are introduced in detail and the measurement of mean flow velocity using the sound field reconstruction is not affected by velocity profile upstream of microphones.