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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
Transactions of the Korean hydrogen and new energy society
Journal Basic Information
Journal DOI :
The Korean Hydrogen and New Energy Society
Editor in Chief :
Volume & Issues
Volume 20, Issue 6 - Dec 2009
Volume 20, Issue 5 - Oct 2009
Volume 20, Issue 4 - Aug 2009
Volume 20, Issue 3 - Jun 2009
Volume 20, Issue 2 - Apr 2009
Volume 20, Issue 1 - Feb 2009
Selecting the target year
Hydrogen Production by the Reaction of Al and Alkaline Solution for PEMFC Application
Sim, Woo-Jong ; Na, Il-Chal ; Song, Myung-Hyun ; Chung, Hoi-Bum ; Kim, Jeong-Ho ; Kim, Tae-Hee ; Park, Kwon-Pil ;
Transactions of the Korean hydrogen and new energy society, volume 20, issue 1, 2009, Pages 1~8
Hydrogen production by the reaction of aluminum alloys and NaOH solution was studied for an automotive proton exchange membrane fuel cell(PEMFC) application. In our experiment conditions(
), passivation of aluminum was not occurred. Higher rate of hydrogen production was observed at the reaction with Al alloys that contain impurities. With an increase in reaction temperature, hydrogen production rate by an increase in NaOH concentration increased much. When hydrogen was fed into the anode without filtering, PEMFC cell performance decreased 35% by ionic contamination such as
on the membrane and electrode. Thus, filtering of produced hydrogen is necessary for PEMFC operation.
An Analysis on CO
Emission and Cost Effects of Hydrogen Energy in Sedan Sector
Hong, Jong-Chul ; Kang, Seung-Jin ; Choi, Sang-Jin ; Park, Sang-Young ; Kim, Jong-Wook ;
Transactions of the Korean hydrogen and new energy society, volume 20, issue 1, 2009, Pages 9~21
As one of the alternative solution for energy and environmental issues such as climate change, energy security, oil price, etc., hydrogen energy has been getting so much attentions these days. This paper analyzed the
emission, costs, and energy consumptions when the hydrogen energy was introduced to transportation, specifically in Sedan sector using the energy system model, MARKAL. As results, 21.5% of
emission in 2040 could be reduced and additional 76 billion dollars will be needed in the high energy price scenario. The amount of energy saving mainly due to the replacement of existing car to hydrogen vehicle was 16% of the final energy consumption in 2040.
Establishment of a Fuzzy Multi-criteria Decision Making Method Framework for Selecting R&D Programs of Energy Technologies
Lee, Seong-Kon ; Mogi, Gento ; Kim, Jong-Wook ;
Transactions of the Korean hydrogen and new energy society, volume 20, issue 1, 2009, Pages 22~30
Energy environment has been changing rapidly such as the fluctuation of oil prices and the effect on UNFCCC. Oil price change affects Korea's economy heavily due to her poor natural resources and large dependence of consumed energy resources. Korea takes the 4th place of importing the crude oil and 9th place in
emissions with the 1st place of
emissions increasing rate. Considering the current statue of Korea including oil price change and UNFCCC, Korea will be expected to be the Annex I nation due to Korean energy environments and the quantity of
emission. Energy technology development is a crucial key to cope with Korea's national energy security and environments. In this study, we establish the framework, which allocates the relative weights of assessment criteria and sub-criteria, for assessing and selecting R&D programs of energy technologies strategically. We integrated fuzzy theory and analytic hierarchy process (AHP) approach since the fuzzy AHP approach reflects the vagueness of human thoughts and perception effectively as making pairwise comparisons of criteria and alternatives. The fundamental data of this research results will support R&D planning phase for policy-makers and the production of well focused R&D outcomes.
The Ejector Design and Test for 5kW MCFC System
Kim, Beom-Joo ; Kim, Do-Hyeong ; Lee, Jung-Hyun ; Lee, Sung-Yoon ; Kim, Jin-Yoel ; Kang, Seung-Won ; Lim, Hee-Chun ;
Transactions of the Korean hydrogen and new energy society, volume 20, issue 1, 2009, Pages 31~37
An ejector is a machine utilized for mixing fluid, maintaining a vacuum, and transporting fluid. The Ejector enhances system efficiency, are easily operated, have a mechnically simple structure, and do not require a power supply. Because of these advantages, the ejector has been applied to a variety of industrial fields such as refrigerators, power plants and oil plants. In this work, an ejector was used to safely recycle anode tail gas in a 5 kW Molten Carbonate Fuel Cell system at KEPRI(Korea Electric Power Research Institute). In this system, the ejector is placed at mixing point between the anode tail gas and the cathode tail gas or the fresh air. Commercial ejectors are not designed for the actual operating conditions for our fuel cell system. A new ejector was therefore designed for use beyond conventional operating limits. In this study, the entrainment ratio is measured according to the diametrical ratio of nozzle to throat in the designed ejector. This helps to define important criteria of ejectors for MCFC recycling.
A Study of Battery Charging Time for Efficient Operation of Fuel Cell Hybrid Vehicle
Jin, Wei ; Kwon, Oh-Jung ; Jo, In-Su ; Hyun, Deok-Su ; Cheon, Seung-Ho ; Oh, Byeong-Soo ;
Transactions of the Korean hydrogen and new energy society, volume 20, issue 1, 2009, Pages 38~44
Recently, the research focused on fuel cell hybrid vehicles (FCHVs) is becoming an attractive solution due to environmental pollution generated by fossil fuel vehicles. The proper energy control strategy will result in extending the fuel cell lifetime, increasing of energy efficiency and an improvement of vehicle performance. Battery state of charge (SoC) is an important quantity and the estimation of the SoC is also the basis of the energy control strategy for hybrid electric vehicles. Estimating the battery's SoC is complicated by the fact that the SoC depends on many factors such as temperature, battery capacitance and internal resistance. In this paper, battery charging time estimated by SoC is studied by using the speed response and current response. Hybrid system is consist of a fuel cell unit and a battery in series connection. For experiment, speed response of vehicle and current response of battery were determined under different state of charge. As the results, the optimal battery charging time can be estimated. Current response time was faster than RPM response time at low speed and vice versa at high speed.
Reduction Characteristics of Oxygen Carrier Particles for Chemical-looping Combustor with Different Fuels
Ryu, Ho-Jung ; Kim, Kyung-Su ; Park, Yeong-Seong ; Park, Moon-Hee ;
Transactions of the Korean hydrogen and new energy society, volume 20, issue 1, 2009, Pages 45~54
Reduction reactivity and carbon deposition characteristics of three oxygen carrier particles(OCN01, OCN02, OCN03) have been investigated by using hydrogen, methane, syngas, and natural gas as fuels. For all particles, the maximum conversion, the oxygen transfer capacity, and the degree of carbon deposition increased as the reactive carbon contents increased. The reduction rate and the oxygen transfer rate increased as the moles of required oxygen per input gas increased. The change of maximum conversion, reduction rate, oxygen transfer capacity, oxygen transfer rate and degree of carbon deposition for different fuels can be explained consistently by using parameters such as the reactive carbon contents and the moles of require oxygen per input gas.
Acetone Solvolysis of a Siberian Spruce Biomass
Yoon, Sung-Wook ;
Transactions of the Korean hydrogen and new energy society, volume 20, issue 1, 2009, Pages 55~63
In this study, thermochemical degradation by acetone solvolysis reaction of siberian spruce wood was investigated for a temperature range of
. The liquid products by acetone solvolysis from siberian spruce wood produced various kinds of aliphatics, cyclic compounds and aromatics included phenols etc. Combustion heating value of liquid products by acetone solvolysis conversion processes was in the range of
. The energy yield in acetone solvolysis of siberian spruce wood was as high as 74.2% after 40min of reaction at
. The liquid products from the thermochemical conversion of siberian spruce wood could be used as high-octane-value fuels and fuel additives.
Measurement on Vibration Mode of Tire Wheel as a Energy Source of Micro Power
Shin, You-Hwan ; Lee, Yoon-Pyo ;
Transactions of the Korean hydrogen and new energy society, volume 20, issue 1, 2009, Pages 64~72
In order to convert efficiently vibration energy of a car tire wheel into electrical power by using piezoelectric materials, the design of the materials must be performed for the dynamic characteristics of the piezoelectric materials to be matched with them of the vibration energy sources well. An accelerometer was installed on the tire wheel with a slip ring to investigate the dynamic mode of the wheel as one of the vibration energy sources. During road test, the measurement on the vibration mode of the tire wheel was performed with variations of car speed and road condition. The experimental data were analyzed details for availability as a micro power source for wireless TPMS(Tire Pressure Monitoring System).
Effect of MoO
Overlayer on Hydrogen Spillover Kinetics over Pt/MoO
Kim, Jin-Gul ; Kim, Seong-Soo ; Yoo, Seung-Joon ;
Transactions of the Korean hydrogen and new energy society, volume 20, issue 1, 2009, Pages 73~78
An Evaluation of the Weights and Investigation of the Impact Factors for Supplying LNG
Hong, Sung-Jun ; Choi, Bong-Ha ; Lee, Deok-Ki ; Lee, Jeong-Tae ; Park, Soo-Uk ;
Transactions of the Korean hydrogen and new energy society, volume 20, issue 1, 2009, Pages 79~85
In this paper, we investigated impact factors by brainstorming and survey research and calculated the weights of them using the Analytic Hierarchy Process(AHP) method in order to evaluate alternatives for supplying Liquefied Natural Gas(LNG). AHP is a useful method for evaluating multi-criteria decision making problems. We selected 3 criteria and 9 sub-criteria. According to the result in this study, the most important sub-criterion is the Government's Policy, and the second is the Province's Policy. The other side, the lowest important sub-criterion is the Investment Cost. This study may provide basic data to select the optimal alternative for supplying LNG.