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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)~30권5호(2019) |수록논문 수 : 1,280
한국수소 및 신에너지학회논문집
30권5호(2019년 10월) 수록논문
최근 권호 논문
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KCI등재

13차 상태방정식을 이용한 수소 충전 온도 거동 모사

저자 : 박병흥 ( Byung Heung Park )

발행기관 : 한국수소및신에너지학회(구 한국수소에너지학회) 간행물 : 한국수소 및 신에너지학회논문집 30권 5호 발행 연도 : 2019 페이지 : pp. 385-394 (10 pages)

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The analysis of temperature behavior of a hydrogen tank during refueling is of significance to clarify the safety of the compressed hydrogen storage in vehicles since the temperature at a tank rises with inflow of hydrogen. A mass balance and an energy balance were combined to obtain analytical model for temperature change during the hydrogen refueling. The equation was coupled to Peng-Robinson-Gasem (PRG) equation of state (EOS) for hydrogen. The PRG EOS was adopted after comparison with other four different cubic EOSs. A parameter of the model was determined to fit data from experiments of various inlet flow rates and temperatures. The temperature and pressure change with refueling time were obtained by the developed model. The calculation results revealed that the extent of precooling was more effective than the flow rate control.

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Comparative studies between single- and two-stage refrigeration cycle using propane as a refrigerant have been performed for a vapor recompression refrigeration cycle. PRO/II with PROVISION release 10.2 from AVEVA company was used, and the Soave-Redlich-Kwong equation of state model with Twu's alpha function was selected for the modeling and optimization of the refrigeration cycle for the reliquefaction of BOG coming out from the LPG storage tank. In two-stage refrigeraton cycle, 24.8% of compressor power was reduced compared to that of single-stage refrigeration cycle through the optimization works.

KCI등재

3PEM 연료전지 시스템 모델링-자동차용 연료전지 시스템의 주요 작동 변수 변경에 따른 시스템 효율 민감도 분석

저자 : 김한상 ( Han-sang Kim ) , 강병길 ( Byunggil Kang ) , 원권상 ( Kwonsang Won )

발행기관 : 한국수소및신에너지학회(구 한국수소에너지학회) 간행물 : 한국수소 및 신에너지학회논문집 30권 5호 발행 연도 : 2019 페이지 : pp. 401-410 (10 pages)

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The operating conditions greatly impact the efficiency and performance of polymer electrolyte membrane (PEM) fuel cell systems and must be properly managed to ensure better performance and efficiency. In particular, small variations in operating conditions interact with each other and affect the performance and efficiency of PEM fuel cell systems. Thus, a systematic study is needed to understand how small changes in operating conditions affect the system performance and efficiency. In this paper, an automotive fuel cell system (including cell stack and balance of plant [BOP]) with a turbo-blower was modeled using MATLAB/Simulink platform and the sensitivity analyses of main operating parameters were performed using the developed system model. Effects of small variations in four main parameters (stack temperature, cathode air stoichiometry, cathode pressure, and cathode relative humidity) on the system efficiency were investigated. The results show that cathode pressure has the greatest potential impact on the sensitivity of fuel cell system efficiency. It is expected that this study can be used as a basic guidance to understand the importance of achieving accurate control of the fuel cell operating conditions for the robust operation of automotive PEM fuel cell systems.

KCI등재

4흡착식 냉방 시스템을 이용한 수소개질/연료전지 시스템의 효율향상

저자 : 무자히드나심 ( Mujahid Naseem ) , 김철민 ( Chul-min Kim ) , 이상용 ( Sangyong Lee )

발행기관 : 한국수소및신에너지학회(구 한국수소에너지학회) 간행물 : 한국수소 및 신에너지학회논문집 30권 5호 발행 연도 : 2019 페이지 : pp. 411-417 (7 pages)

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An adsorption chiller is connected to the fuel processing/fuel cell system to increase the energy efficiency of the system. Since, the minimum temperature of 70°C is needed to operate the adsorption chiller, HT-PEMFC is used as a heating source and 80°C hot water in the water tank at the system is supplied to the chiller. Experimentally measured COP of the adsorption chiller was between 0.4-0.5 and the total calcuated efficiency of the connected system was between 60% and 70% comparing to 47% without adsorption chilling system.

KCI등재

5천연 대나무로부터 합성된 활성 탄소의 미세구조 및 전기화학적 특성

저자 : 양동철 ( Dong-cheol Yang ) , 김수원 ( Su-won Kim ) , M. G. Chourashiya , 박충년 ( Choong-nyeon Park ) , 박찬진 ( Chan-jin Park )

발행기관 : 한국수소및신에너지학회(구 한국수소에너지학회) 간행물 : 한국수소 및 신에너지학회논문집 30권 5호 발행 연도 : 2019 페이지 : pp. 418-427 (10 pages)

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Activated carbon was synthesized from bamboo charcoal by KOH activation at various temperatures for electrochemical double layer capacitor applications. The micro-structural and surface properties of all the samples were characterized by X-ray diffraction, scanning electron microscopy and N2 adsorption/desorption isotherm method. The electrochemical properties of the activated bamboo charcoal were examined by cyclic voltammetry in the potential window of -1.0 to 0.2 V in 6 M KOH electrolyte at different scan rates. An electrode made from the sample activated with 7.5 M KOH and heat treated at 750℃ for 3 h gave a maximum capacitance of 553 F/g at 1 mV/s and 450 F/g at 10mV/s.

KCI등재

6저농도 바이오알코올 혼합에 따른 스파크 점화 엔진 청정 특성 연구

저자 : 차규섭 ( Gyusob Cha ) , 노수영 ( Sooyoung No )

발행기관 : 한국수소및신에너지학회(구 한국수소에너지학회) 간행물 : 한국수소 및 신에너지학회논문집 30권 5호 발행 연도 : 2019 페이지 : pp. 428-435 (8 pages)

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A comparative evaluation of engine cleanliness was performed on the transport gasoline blended with bio- alcohols, and this study was considered to achieve the aim of greenhouse gas reduction in Korea. In particular, the fuel blended with bio-ethanol and bio-butanol showed the best engine cleaning performance both on combustion chamber deposits and intake valve deposits. The deposit control gasoline additive was effective to remove intake valve deposits. In contrast, the amount of combustion chamber deposits were tend to increase even though fuels blended with bio-alcohols were used. In overall, fuels blended with bio-alcohols, compared to fossil fuels, still showed outstanding performance in terms of engine cleanliness.

KCI등재

7Pilot 순환유동층 연소장치에서의 목재펠릿과 아역청탄 혼소 특성

저자 : 김동원 ( Dong Won Kim ) , 박경일 ( Kyeong Il Park ) , 이종민 ( Jong Min Lee ) , 배용채 ( Yong Chae Bae )

발행기관 : 한국수소및신에너지학회(구 한국수소에너지학회) 간행물 : 한국수소 및 신에너지학회논문집 30권 5호 발행 연도 : 2019 페이지 : pp. 436-447 (12 pages)

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The circulating fluidized bed boiler has an advantage that can burn a variety of fuels from low-grade fuel to coal. In this study, for the design of a circulating fluidized bed boiler using wood pellets, a circulating fluidized bed combustion test device using no external heater was manufactured and used. According to the increase of co-combustion rate with wood pellet, combustion fraction and heat flux by combustor height were measured and pollutant emission characteristics were analyzed. In terms of combustibility, the effect on primary and secondary air ratio were also studied. In addition, as a result of analysis of the effect of corrosive nanoparticles on the combustion of coal with wood pellets, it was confirmed that coal is mostly composed of Ca and S, whereas wood pellets are mostly composed of K, Cl, and Na.

KCI등재

8주요 성능변수를 근거한 단일채널펌프 설계기술

저자 : 김성 ( Sung Kim ) , 최영석 ( Young-seok Choi ) , 김진혁 ( Jin-hyuk Kim )

발행기관 : 한국수소및신에너지학회(구 한국수소에너지학회) 간행물 : 한국수소 및 신에너지학회논문집 30권 5호 발행 연도 : 2019 페이지 : pp. 448-454 (7 pages)

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This paper presents a high-efficiency design technique for developing the serialized models of a single-channel pump based on the diameter, flow rate and head as the main performance parameters. The variation in pump performance by changing of the single-channel pump geometry was predicted based on computational fluid dynamics (CFD). Numerical analysis was conducted by solving three-dimensional steady Reynolds-averaged Navier-Stokes equations with the shear stress transport (SST) turbulence model. The tendencies of the hydraulic performance depending on the pump geometry scale were analyzed with the fixed rotational speed. These performances were expressed and evaluated as the functionalization for designing the serialized models of a single-channel pump in this work.

KCI등재

9강판 종별 온도에 따른 산화 민감도 조사

저자 : 김주한 ( Juhan Kim ) , 이기만 ( Keeman Lee )

발행기관 : 한국수소및신에너지학회(구 한국수소에너지학회) 간행물 : 한국수소 및 신에너지학회논문집 30권 5호 발행 연도 : 2019 페이지 : pp. 455-464 (10 pages)

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Experiments were conducted to investigate the sensitivity of steel plate oxidation with temperature in a simulated furnace. Used steel plates were a general steel and a high tensile steel. Porous media burner (PM burner) used in model furnace was made for uniform temperature profile. The surrounding temperature was controlled by adjusting the flow rate of the mixture in the combustor. Oxide layer analysis was performed using SEM image analysis and EDS line scanning. Both steel sheets showed a tendency to increase the thickness of the steel sheet surface oxide layer as the temperature increases, and it was confirmed that the flaking phenomenon in surface oxidation layer appeared when the temperature was above a certain temperature.

KCI등재

10국내 해양에너지 이론적 잠재량 산정 연구

저자 : 황수진 ( Sujin Hwang ) , 조철희 ( Chulhee Jo )

발행기관 : 한국수소및신에너지학회(구 한국수소에너지학회) 간행물 : 한국수소 및 신에너지학회논문집 30권 5호 발행 연도 : 2019 페이지 : pp. 465-472 (8 pages)

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This paper describes the resource assessment of theoretical potential of ocean energy including tidal current energy, tidal range energy, wave energy and ocean thermal energy in Korea to provide reliable basis for feasible development plan of ocean energy. Because of different characteristics of each ocean energy resources, the resource assessment methods were established considering characteristics of each ocean energy resources. The coastal region of Korea has been divided into 10 regions. The results show that tidal current energy is abundant in Incheon-Gyunggi and Jeollanam-do and tidal range energy is abundant in Incheon-Gyunggi. And wave energy is abundant in Jeollanam-do, Jeju and Gyeongsangbuk-do and there is ocean thermal energy in Gangwon-do and Gyeongsangbuk-do.

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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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가장 많이 참고한 논문

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2미국의 비트코인 규제

(2006)홍길동41회 피인용

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