Dynamic Model of Water Electrolysis for Prediction of Dynamic Characteristics of Cooling System

SANGHYUN YUN, JINYON YUN, GUNYONG HWANG

Water electrolysis technology, which generates hydrogen using renewable energy resources, has recently attracted great attention. Especially, the polymer electr...

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DOI: https://doi.org/10.7316/KHNES.2021.32.1.1

Recent Activities of Solid Oxide Fuel Cell Research in the 3D Printing Processes

ZUBAIR MASAUD, MUHAMMAD ZUBAIR KHAN, AMJAD HUSSAIN, HAFIZ AHMAD ISHFAQ, RAK-HYUN SONG, SEUNG-BOK LEE, DONG WOO JOH, TAK-HYOUNG LIM

Solid oxide fuel cell (SOFC) has received significant attention recently because of its potential for the clean and efficient power generation. The current manu...

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DOI: https://doi.org/10.7316/KHNES.2021.32.1.11

Characterization of NiO and Co₃O₄-Doped La(CoNi)O₃ Perovskite Catalysts Synthesized from Excess Ni for Oxygen Reduction and Evolution Reaction in Alkaline Solution

LING BO, HYUNG-RYUL RIM, HONG-KI LEE, GYUNGSE PARK, JOONGPYO SHIM

NiO and CoO-doped porous La(CoNi)O perovskite oxides were prepared from excess Ni addition by a hydrothermal method using porous silica template, and characteri...

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DOI: https://doi.org/10.7316/KHNES.2021.32.1.41

Effects of Temperature, Pressure, Gas Velocity, and Capacity on Reduction Characteristics of Mass Produced Particle in a 0.5 MWth Chemical Looping Combustion System

HO-JUNG RYU, DOYEON LEE, HYUNGSEOK NAM, BYUNG WOOK HWANG, HANA KIM, YOOSEOB WON, JEOM-IN BAEK

Batch type reduction-oxidation tests were performed to check effects of temperature, pressure, gas velocity, and capacity on reduction characteristics of mass p...

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DOI: https://doi.org/10.7316/KHNES.2021.32.1.53

Heat Transfer Coefficients of Concentric Annuli for Testing Heat Transfer Characteristics of Alternative Refrigerants in Tubes

MAN-HOE KIM

Accurate measurements of the heat transfer coefficients of concentric annular space for the test section is important to measure the tube-side heat transfer coe...

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DOI: https://doi.org/10.7316/KHNES.2021.32.1.63

Partial Oxidation Reformer in a Plasma-Recuperative Burner

JUNE AN, YOUNG NAM CHUN

Climate change problems occur during the use of fossil fuel and the process of biogas production. Research continues to convert carbon dioxide and methane, the ...

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DOI: https://doi.org/10.7316/KHNES.2021.32.1.68

Exergy and Entransy Performance Characteristics of Cogeneration System in Parallel Circuit Using Low-Grade Heat Source

KYOUNG HOON KIM, KYOUNGJIN KIM, YOUNGGUAN JUNG

In this paper, entransy analysis is carried out for combined heat and power (CHP) generation system driven by low-grade heat source compared with energy and exe...

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DOI: https://doi.org/10.7316/KHNES.2021.32.1.77

Mode 1 Fracture Toughness Test of CNT/Epoxy Composites with Different CNT Content

DONG-JUN KWON, HYEONGMIN YOO

In order to save the energy in vehicles using renewable energy, it is necessary to reduce the weight of parts with polymer matrix composites. Carbon nanotube (C...

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DOI: https://doi.org/10.7316/KHNES.2021.32.1.86