• 한국추진공학회:학술대회논문집
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• 한국추진공학회 2010년도 제35회 추계학술대회논문집
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• pp.784-785
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• 2010

전북대학교 고온플라즈마 응용연구센터 구축사업단에서는 MW급 초음속 플라즈마 풍동을 구축하고 있다. 구축되는 장비는 0.4MW/2.4MW급 Huels형 DC 플라즈마 장치 및 60kW/200kW급 RF 플라즈마 장치 등으로 구성되며 이러한 장비를 지원하는 공통지원설비가 별도로 구축되게 된다. 공통지원설비는 플라즈마 풍동을 구동하기 위한 수변전설비 및 가스공급설비, 냉각수공급설비, NOx 제거용 후처리 설비, 예비전원설비 등으로 구성되어 있다.

• 한국유체기계학회 논문집
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• 제15권1호
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• pp.21-26
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• 2012

In this investigation, the aerodynamic performance evaluation of a 1MW class blade has been performed with the purpose of the verification of target output and its clear understanding of flow field using CFD commercial code, ANSYS FLUENT. Before making progress of CFD analysis the HERACLES V2.0 software based on blade element momentum theory was applied for confirmation of quick and approximate performance in the preliminary stage. The blade was designed to produce the target output of a 1MW class at a rated wind speed of 12m/s, which consists of five different airfoils such as FFA W-301, DU91-W250, DU93-W-210, NACA 63418 and NACA 63415 from hub to tip. The mechanical power by CFD is approximately 1.195MW, which is converted into the electrical power of 1.075MW if the system loss is considered to be 0.877.

• 한국초전도ㆍ저온공학회논문지
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• 제6권3호
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• pp.38-43
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• 2004

1MW class superconducting synchronous motor is designed considering several conditions such as superconducting wire length, machine efficiency and size. As the machine is larger and larger, the superconducting machine shows the advantages more and more over the conventional machines. Although the advantages at 1MW rating are not so great, the design approach to get an appropriate result would be very helpful for larger superconducting synchronous machine design. Major design concerns are focused on reducing expensive Bi-2223 HTS(High Temperature Superconducting) wire which is used for superconducting field coil carrying the rating current around 30K(-243$^{\circ}C$) while the machine efficiency is higher than conventional motors or generators with the same rating. Furthermore, some iron cored structure is considered to reduce the HTS wire requirement without bad effect on machine performances such as sinusoidal armature voltage waveform, synchronous reactance and so on.

• 한국추진공학회:학술대회논문집
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• 한국추진공학회 2010년도 제35회 추계학술대회논문집
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• pp.764-767
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• 2010

전북대학교 고온플라즈마 응용연구센터 구축사업단에서는 MW급 초음속 플라즈마 풍동을 구축하고 있다. 구축되는 장비는 0.4MW/2.4MW급 Huels형 DC 플라즈마 장치 및 60kW/200kW급 RF 플라즈마장치 등으로 구성되며 이러한 장비를 지원하는 공통지원설비가 별도로 구축되게 된다. 공통지원설비는 플라즈마 풍동을 구동하기 위한 수변전설비 및 가스공급설비, 냉각수공급설비, NOx 제거용 후처리 설비, 예비전원설비 등으로 구성되어 있다. 4기의 플라즈마 장치와 공통지원설비를 위한 건축물은 시험동, 연구동, 수변전동, 기체저장동, 냉각탑 기초로 구성되어 있다.

• Journal of Pharmaceutical Investigation
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• 제41권3호
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• pp.179-184
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• 2011

This study aimed to confirm the effect of molecular weight (MW) in solid dispersion of carvedilol with poly-vinylpyrrolidone (PVP) of various MW. Solid dispersion of carvedilol with PVP was prepared by spray-drying method. Scanning electron microscopy (SEM) was used to analyze the surface of solid dispersion samples. Differential scanning calorimetry (DSC) and X-ray diffraction (XRD) were used to analyze the crystalline of solid dispersion. Fourier transform infrared spectroscopy (FT-IR) was used to analyze the change of chemical structure characteristic of solid dispersion. DSC and XRD show that drug crystalline was changed. FT-IR revealed that chemical structure of solid dispersion comparing the chemical structure of drug was changed. The dissolution studies of solid dispersion presented at simulated gastric juice (pH 1.2). The dissolution rate of solid dispersion was dramatically enhanced than pure drug and the MW of PVP has an effect on the release property of carvedilol in solid dispersion. In conclusion, the present study has confirmed the effect of MW of PVP on release property of solid dispersion formulation of carvedilol with PVP.

• 대한설비공학회:학술대회논문집
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• 대한설비공학회 2008년도 하계학술발표대회 논문집
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• pp.1019-1024
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• 2008

A 3 MW class oxy-fuel boiler has been developed to capture $CO_2$ from the exhaust gas. The system is a scale-up of the previous 0.5 MW class system in general. A heat exchanger and a mixer are additionally installed to stabilize the flame for the FGR mode. The system yields the exhaust gas with $CO_2$ concentration over 90% and reduced NO emission to 1/10 of conventional air combustion system.

• 한국초전도ㆍ저온공학회논문지
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• 제10권1호
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• pp.57-61
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• 2008

A 1MW class HTS(High-Temperature Superconducting) synchronous motor has been developed. This motor was aimed to be utilized for industrial application such as large motors operating in large plants. The HTS field windings of the developed motor is cooled by way of Neon thermosiphon mechanism and the stator coil is cooled by water through hollow copper conductor. This paper describes performance test results of our motor, which was conducted at steady state in generator mode and motor mode.

• 한국가시화정보학회지
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• 제17권2호
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• pp.32-38
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• 2019

A comparison study between computational-fluid-dynamics simulation and wind tunnel test for a megawatt-class wind turbine is conducted. For the study, flow-field in wake, basic aerodynamic performance, and effect of the yaw error for a 1/86 scaled-down model of the NREL offshore 5 MW wind turbine are numerically calculated using commercial software "FloEFD" with $k-{\varepsilon}$ turbulence model. The computed results are compared to the wind tunnel test performed by the constant-velocity mode for the model. It is shown that discrepancy are found between the two results at lower tip-speed ratio and higher yaw angle, however, the velocity-defection distribution in the wake, the torque coefficient at moderated and high tip-speed ratios are in good agreement with the wind tunnel test.

• 한국추진공학회:학술대회논문집
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• 한국추진공학회 2011년도 제37회 추계학술대회논문집
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• pp.694-696
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• 2011

전북대학교 고온플라즈마 응용연구센터 구축사업단에서는 0.4MW/2.4MW급 Huel type 플라즈마장치 및 60kW/200kW급 RF 플라즈마 장치 구축을 목표로 건축 및 장비 지원설비가 센터 부지에 설치되고 있으며 플라즈마 장치의 구축이 완료되면 분말합성, 용사코팅, 지구 재진입 환경 모사 등 일련의 과정을 모두 한자리에서 처리할 수 있을 것으로 예상된다.

• 대한설비공학회:학술대회논문집
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• 대한설비공학회 2008년도 동계학술발표대회 논문집
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• pp.345-350
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• 2008

The present study has been conducted to develop a heat recovery system for a 1 MW class gas engine based cogeneration system. In the cogeneration system, heat is recovered from two parts, which are jacket water and exhaust gas. The heat from the jacket water is recovered by a plate type heat exchanger and used for the room heating and/or hot water supply. The heat from the exhaust gas is used to generate steam. For both of the heat recovery devices, 1/5 scaled tests are performed and the data are compared to the conventional correlations for the design.