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한국수소및신에너지학회(구 한국수소에너지학회)> 한국수소 및 신에너지학회논문집

한국수소 및 신에너지학회논문집 update

Transactions of the Korean Hydrogen and Energy Society

  • : 한국수소및신에너지학회(구 한국수소에너지학회)
  • : 공학분야  >  화학공학
  • : KCI등재
  • :
  • : 연속간행물
  • : 격월
  • : 1738-7264
  • : 2288-7407
  • : 수소에너지(~2001)→한국수소 및 신에너지학회논문집(2002~)

수록정보
수록범위 : 13권1호(2002)~31권5호(2020) |수록논문 수 : 1,359
한국수소 및 신에너지학회논문집
31권5호(2020년 10월) 수록논문
최근 권호 논문
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KCI등재

1가스정압관리소 기반의 복합에너지허브 기본설계

저자 : 박소진 ( Sojin Park ) , 김형태 ( Hyoungtae Kim ) , 김진욱 ( Jinwook Kim ) , 강일오 ( Il-oh Kang ) , 유현석 ( Hyunsuk Yoo ) , 최경식 ( Kyoungshik Choi )

발행기관 : 한국수소및신에너지학회(구 한국수소에너지학회) 간행물 : 한국수소 및 신에너지학회논문집 31권 5호 발행 연도 : 2020 페이지 : pp. 405-410 (6 pages)

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In this literature, we are introduce a basic design of multi energy hub based on natural gas governor station. Multi energy hub consists of turbo expender generator, phosphoric acid fuel cell, pressure swing adsorption, H2 charging station, utilities and etc. We design a hybrid energy hub system that provides energy using these complex energies, and calculates the amount of electricity that can be produced and the amount of hydrogen charged through the process analysis. TEG and phosphoric acid fuel cell produce 2,290 to 2,380 kW and can supply electricity to 500 houses. In addition, By-product H2 gas is refined to H2 vehicle fuel. This will help maximize the balance of energy demand and supply and improve national energy efficiency by integrating unused decompression energy power generation technology and various power generation/heat source technologies.

KCI등재

2고압형 메탄올 수증기 개질기 압력용기의 내부 유동 개선을 위한 전산 해석

저자 : 유동진 ( Dongjin Yu ) , 지현진 ( Hyunjin Ji ) , 유상석 ( Sangseok Yu )

발행기관 : 한국수소및신에너지학회(구 한국수소에너지학회) 간행물 : 한국수소 및 신에너지학회논문집 31권 5호 발행 연도 : 2020 페이지 : pp. 411-418 (8 pages)

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A reformer is a device for producing hydrogen used in fuel cells. Among them, methanol steam reformer uses methanol as fuel, which is present as a liquid at room temperature. It has the advantage of low operating temperature, high energy density, and high hydrogen production. The purpose of this study is to improve the internal flow of the pressure vessel when a bundle of methanol steam reformer in the pressure vessel goes out to a single outlet. An analysis of equilibrium reaction to methanol steam reforming reaction was conducted using Aspen HYSYS® (Aspen Technology Inc., Bedford, USA), and based on the results, computational analysis was conducted using ANSYS Fluent® (ANSYS, Inc., Canonsburg, USA). For comparison of the results, the height of the pressure vessel, outlet diameter, and fillet was set as variables, and the optimum geometry was selected by comparing the effects of gravity and the amount of negative pressure.

KCI등재

3활성탄 담지 몰리브덴 촉매를 이용한 합성가스 직접 메탄화 반응

저자 : 김성수 ( Seong-soo Kim ) , 이승재 ( Seung-jae Lee ) , 박성열 ( Sung-youl Park ) , 김진걸 ( Jin-gul Kim )

발행기관 : 한국수소및신에너지학회(구 한국수소에너지학회) 간행물 : 한국수소 및 신에너지학회논문집 31권 5호 발행 연도 : 2020 페이지 : pp. 419-428 (10 pages)

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The kinetics of direct methanation over activated charcoal-supported molybdenum catalyst at 30 bar was studied in a cylindrical fixed-bed reactor. When the temperature was not higher than 400℃, the CO conversion increased with increasing temperature according to the Arrhenius law of reaction kinetics. While XRD and Raman analysis showed that Mo was present as Mo oxides after reduction or methanation, TEM and XPS analysis showed that Mo2C was formed after methanation depending on the loading of Mo precursor. When the temperature was as high as 500℃, the CO conversion was dependent not only on the Arrhenius law but also on the catalyzed reaction by nanoparticles, which came off from the reactor and thermocouple by metal dusting. These nanoparticles were made of Ni, Fe, Cr and alloy, and attributed to the formation of carbon deposit on the wall of the reactor and on the surface of the thermocouple. The carbon deposit consisted of amorphous and disordered carbon filaments.

KCI등재

4냉동능력 2 kW 급 역브레이튼 극저온 냉각시스템 성능시험

저자 : 고준석 ( Junseok Ko ) , 이근태 ( Keun-tae Lee ) , 박성제 ( Seong-je Park ) , 김종우 ( Jongwoo Kim ) , 추상윤 ( Sangyoon Choo ) , 홍용주 ( Yong-ju Hong ) , 인세환 ( Sehwan In ) , 박지호 ( Jiho Park ) , 김효봉 ( Hyobong Kim ) , 염한길 ( Hankil Yeom )

발행기관 : 한국수소및신에너지학회(구 한국수소에너지학회) 간행물 : 한국수소 및 신에너지학회논문집 31권 5호 발행 연도 : 2020 페이지 : pp. 429-435 (7 pages)

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This paper describes the experimental study of reverse-Brayton refrigeration system for application to high temperature superconductivity electric devices and LNG re-liquefaction. The reverse-Brayton refrigeration cycle is designed with operating pressure of 0.5 and 1.0 MPa, cooling capacity of 2 kW at 77 K, and neon as a working fluid. The refrigeration system is developed with multi scroll compressor, turbo expander and plate heat exchanger. From experiments, the performance characteristics of used components is measured and discussed for 77-120 K of operating temperature. The developed refrigeration system shows the cooling capacity of 1.23 kW at 77 K and 1.64 kW at 110 K.

KCI등재

5심층 신경망 기법을 이용한 고체 산화물 연료전지 스택의 성능 예측 모델

저자 : 이재윤 ( Jaeyoon Lee ) , 이스라엘또레스삐네다 ( Israel Torres Pineda ) , 잡반티엔 ( Van-tien Giap ) , 이동근 ( Dongkeun Lee ) , 김영상 ( Young Sang Kim ) , 안국영 ( Kook Young Ahn ) , 이영덕 ( Young Duk Lee )

발행기관 : 한국수소및신에너지학회(구 한국수소에너지학회) 간행물 : 한국수소 및 신에너지학회논문집 31권 5호 발행 연도 : 2020 페이지 : pp. 436-443 (8 pages)

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The performance prediction model of a solid oxide fuel cell stack has been developed using deep neural network technique, one of the machine learning methods. The machine learning has been received much interest in various fields, including energy system mo- deling. Using machine learning technique can save time and cost requried in developing an energy system model being compared to the conventional method, that is a combination of a mathematical modeling and an experimental validation. Results reveal that the mean average percent error, root mean square error, and coefficient of determination (R2) range 1.7515, 0.1342, 0.8597, repectively, in maximum. To improve the predictability of the model, the pre-processing is effective and interpolative machine learning and application is more accurate than the extrapolative cases.

KCI등재

6우주탐사용 직접 수소화붕소나트륨/과산화수소 연료전지의 환원극 촉매

저자 : 유수상 ( Su Sang Yu ) , 오택현 ( Taek Hyun Oh )

발행기관 : 한국수소및신에너지학회(구 한국수소에너지학회) 간행물 : 한국수소 및 신에너지학회논문집 31권 5호 발행 연도 : 2020 페이지 : pp. 444-452 (9 pages)

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This study investigated the cathode catalyst of direct borohydride/ hydrogen peroxide fuel cells for space exploration. Various catalysts such as Au, Ag, and Ni were supported on multiwalled carbon nanotubes (MWCNTs). Various techniques, such as transmission electron microscopy, Brunauer-Emmett- Teller method, scanning electron microscopy, and X-ray diffraction were conducted to investigate the characteristics of the catalysts. Fuel cell tests were performed to evaluate the performance of the catalysts. Ag/MWCNTs exhibited better catalytic activity than the Ni/MWCNTs and better catalytic selectivity of the Au/MWCNTs. Ag/MWCNTs presented good catalytic activity and selectivity even at an elevated operating temperature. The performance of Ag/MWCNTs was also stable for up to 60 minutes.

KCI등재

7수소전기차용 EPDM 고무의 충전재 입자 크기별 고압 수소 환경에서의 거동 연구

저자 : 김기정 ( Keejung Kim ) , 전형렬 ( Hyeong-ryeol Jeon ) , 강영임 ( Young-im Kang ) , 김완진 ( Wanjin Kim ) , 염지웅 ( Jiwoong Yeom ) , 최성준 ( Sung-joon Choi ) , 조성민 ( Sungmin Cho )

발행기관 : 한국수소및신에너지학회(구 한국수소에너지학회) 간행물 : 한국수소 및 신에너지학회논문집 31권 5호 발행 연도 : 2020 페이지 : pp. 453-458 (6 pages)

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In this study, ethylene-propylene-diene monomer (EPDM) rubbers reinforced with various particle size of carbon black were prepared and tested. We followed recently published CSA/ANSI CHMC2 standard “the test methods for evaluating material compatibility in compressed hydrogen applications-polyemr”. Measurement of change in hardness, tensile strength and volume were performed after exposure to maximum operating pressure, 87.5 MPa, for 168 hours (1 week). Once EPDM was exposed to high-pressure hydrogen, the samples experience volume increase and degradation of the physical properties. Also, after the dissolved hydrogen was fully eliminated from the specimens, the hardness and the tensile properties were not recovered. The rubber reinforced with smaller sizes of carbon black particles showed less volume expansion and decrease of physical properties. As a result, smaller particle size of carbon black filler led to more resistance to high-pressure hydrogen.

KCI등재

8정량적 위험성평가 프로그램(Hy-KoRAM)을 이용한 제조식 수소충전소 피해범위 및 영향 분석

저자 : 김혜림 ( Hyelim Kim ) , 강승규 ( Seungkyu Kang )

발행기관 : 한국수소및신에너지학회(구 한국수소에너지학회) 간행물 : 한국수소 및 신에너지학회논문집 31권 5호 발행 연도 : 2020 페이지 : pp. 459-466 (8 pages)

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As the hydrogen industry grows, expansion of infrastructure for hydrogen supply is required, but the safety of hydrogen facilities is concerned due to the recent accidents at the Gangneung hydrogen tank and the Norwegian hydrogen fueling station. In this study, the damage range and impact analysis on the on-site hydrogen fueling station was conducted using Hy-KoRAM. This is a domestically developed program that adds functions based on HyRAM. Through this risk assessment, it was evaluated whether the on-site hydrogen fueling station meets international standards and suggested ways to improve safety.

KCI등재

9대향류 화염에서의 합성가스 내 수소 함량에 따른 연소 특성 변화에 관한 수치해석 연구

저자 : 김동희 ( Donghee Kim ) , 박진제 ( Jinje Park ) , 허강열 ( Kang Y Huh ) , 이영재 ( Youngjae Lee )

발행기관 : 한국수소및신에너지학회(구 한국수소에너지학회) 간행물 : 한국수소 및 신에너지학회논문집 31권 5호 발행 연도 : 2020 페이지 : pp. 467-479 (13 pages)

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Various researches are being conducted to reduce greenhouse gases generated by the consumption of traditional energy resources. This study was conducted to numerically analyze the combustion characteristics and N-S reaction behavior with respect to the H2 content of syngas composed of CO and H2 in pressurized air combustion. A non-premixed opposed flow flame model was applied a modified detailed mechanism with S-chemistry was developed based on GRI 3.0 to simulate the syngas reaction. As the hydrogen content increased, the flame thickness increased due to the fast reactivity of hydrogen. In the rich region, NO and SO2 were reduced by reaction with H radical and H bonding of NO was suppressed by the formation of HOSO.

KCI등재

10반도체 칩 테스트용 챔버 형상에 따른 유동 균일성에 대한 수치적 연구

저자 : 이대규 ( Daegyu Lee ) , 마상범 ( Sang-bum Ma ) , 김성 ( Sung Kim ) , 김정열 ( Jeong-yeol Kim ) , 강채동 ( Chaedong Kang ) , 김진혁 ( Jin-hyuk Kim )

발행기관 : 한국수소및신에너지학회(구 한국수소에너지학회) 간행물 : 한국수소 및 신에너지학회논문집 31권 5호 발행 연도 : 2020 페이지 : pp. 480-488 (9 pages)

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This study was conducted to improve the flow uniformity inside the chip tester through changing the flow path formation according to the inlet and outlet position of chamber. The internal flow and velocity distributions of the modified chamber models (Cases 1-3) were compared with the reference chamber model through three-dimensional Reynolds-averaged Navier-Stokes equations with k-ε turbulence model. The modified chamber models showed the superior flow uniformity characteristics compared to the reference chamber model. To investigate the flow uniformity in the chip tester, the standard deviation of the velocity was defined and compared. Through the internal flow analysis and assesment of the standard deviation, Case 2 among the test cases including the reference model showed the best flow uniformity generally.

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1연안해역에서 석유오염물질의 세균학적 분해에 관한 연구

(2006)홍길동 외 1명심리학41회 피인용

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2미국의 비트코인 규제

(2006)홍길동심리학41회 피인용

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(2006)홍길동41회 피인용

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