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이봉섭,진광윤,오홍석,김영흥 三陟大學校 2002 論文集 Vol.35 No.-
In this paper, the new transverse flux machine type claw pole linear stepping motor(TFM_CPLSM) is proposed. And the magnetic equivalent circuit of TFM_ CPLSM is derived by the structure of the TFM_CPLSM. The design parameter, the magnetic flux density and the static thrust force of TFM_CPLSM are Performed with three-dimensional finite element method.
이봉섭,박승조 동아대학교 환경문제연구소 2002 硏究報告 Vol.25 No.1
Waste activated carbon containing phenol discharged from industrial field used the samples of this study. We investigated with the physical and chemical characteristics of activated carbon regenerated by Pseudomonas putida (KCCM 11762). The results obtained from investigated the physical and chemical characteristics of regenerated activated carbon in case of pH 7. regeneration time 20 hrs and regeneration temperature 26℃, the removal efficiency of phenol was 93%, average iodine adsorbability was l082mg/g and methyleneblue decolorization power(MBDP) was 138㎖/g.
분할공진 콘덴서를 갖는 전류형 고주파 인버터의 특성해석과 설계
이봉섭,김동희 한국조명전기설비학회 1998 조명·전기설비학회논문지 Vol.12 No.2
본 논문은 병렬 공진 커패시터를 분리 설치한 전류형 고주파 인버터를 대상으로 하여 그 운전 특성에 대해 논하고 있다. 회로 해석은 정규화 파라메타를 도입하여 범용성 있게 기술하고 있으며, 회로의 특성평가도 행하였다. 또한, MOSFET를 스위칭 소자로 사용여 실험을 행한 결과, 이론적 해석과 잘 일치하고 있어, 연구 대상 회로의 이론적 해석의 정당성을 입증하고 있다. 향후, 제안회로는 유도 가열용 고주파 전원 등으로 활용되리라 기대된다. The current-fed high frequency inverter with separated parallel resonant capacitor is presented in this paper. The analysis of the proposed circuit is generally described by using normalized parameter, and are evaluated characteristics of the circuit.In addition, this paper proves the propriety of theoretical analysis in terms of the experimental waveforms using the switching device MOSFET. In the future, the proposed inverter will expected that it can be practically used as the high frequency power source for induction heating etc.ng etc.
이봉섭,변헌수 한국공업화학회 2018 Journal of Industrial and Engineering Chemistry Vol.59 No.-
In this work, the experimental cloud-points in the binary and ternary mixtures for poly(2-phenylethyl methacrylate) [P(2-PEMA)] solutions containing supercritical solvents (i.e., carbon dioxide, propylene, 1-butene, dimethyl ether (DME)) are carried out up to 473 K and 224 MPa. According to the amount of cosolvent (i.e., DME), the cloud-point curves for ternary mixtures of P(2-PEMA) in supercritical solvents (i.e., carbon dioxide, propylene, 1-butene) show the changes from upper critical solution temperature (UCST) behavior to lower critical solution temperature (LCST) behavior. The PC-SAFT equation of state is applied to correlate the phase behaviors of all experimental systems, and the calculated results are shown as a reasonable agreement with experimental data. According to the amount of DME (i.e., cosolvent), the UCST- and LCST-type phase behaviors are described exactly by PC-SAFT EoS with one adjustable binary interaction parameter on which the effect of temperature and/or cosolvent amount is not considered.