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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
Journal of the Korean Institute of Gas
Journal Basic Information
Journal DOI :
The Korean Institute of GAS
Editor in Chief :
Volume & Issues
Volume 17, Issue 6 - Dec 2013
Volume 17, Issue 5 - Oct 2013
Volume 17, Issue 4 - Aug 2013
Volume 17, Issue 3 - Jun 2013
Volume 17, Issue 2 - Apr 2013
Volume 17, Issue 1 - Feb 2013
Selecting the target year
Internal Pressure Variation Analysis and Actual Holding Time Test on ISO LNG Tank Container
Ryou, Young-Don ; Lee, Jin-Han ; Jo, Young-Do ; Oh, Young-Sam ; Cha, Kyong-Ho ;
Journal of the Korean Institute of Gas, volume 17, issue 6, 2013, Pages 1~7
DOI : 10.7842/kigas.2013.17.6.1
Internal pressure variation analysis and actual holding time test on ISO LNG tank containers which were made in Korea for the first time according to the special notification of ISO tank container manufacture have been conducted during the transport demonstration projects of the tank containers by tractor, train and ship. The internal pressure of the LNG tank container increased rapidly after LNG filling and dropped during moving the container. However, it was stabilized as time passed and followed the liquid-vapor equilibrium graph. In addition, actual holding time of the tank container was more than 20 days which was satisfied with the special notification of LNG tank container manufacture.
Characteristics of LPG fuel Reforming in Plasma Reformer for Hydrogen Production
Park, Yunhwan ; Lee, Deahoon ; Kim, Changup ; Kang, Kernyong ;
Journal of the Korean Institute of Gas, volume 17, issue 6, 2013, Pages 8~14
DOI : 10.7842/kigas.2013.17.6.8
In this study, characteristics of the geometric design changes of plasma reformer for LPG fuelled vehicles were studied. To improve the yield of hydrogen, reformer 1st, and 2nd were designed. Secondary reformer compared to the primary reformer to increase the volume of the rear part of reformed gas having passed through the plasma and increased reaction time. To compare reforming results of two reformers, various experimental conditions such as, from partial oxidation to total oxidation conditions
ratios, and total flow rate of 20, 30, 40, 50 lpm conditions, were varied. Results showed that with increasing
ratios, LPG conversion rate increased, decreased hydrogen selectivity and hydrogen yield optimal point existed and secondary reformer 4.5 times larger than the primary reformer at the same flow rate to 4~14% increase in the yield of hydrogen.
Study of Fire Examples for Electrical Wire Short and Insulated Coating Melting by Heating Including Automotive Engine Room
Lee, Il Kwon ; Kim, Young Gyu ; Youm, Kwang Wook ;
Journal of the Korean Institute of Gas, volume 17, issue 6, 2013, Pages 15~19
DOI : 10.7842/kigas.2013.17.6.15
This paper is to analyze and study the cause of fire examples produced because of short phenomenon by electric connecting damage and contacting engine over-heating with combustible materials in engine room of vehicle. In the first example, it knew the fact that the fire produced by contacting with body of vehicle because of loosed of bracket bolt for wire fixing that installed on the transmission case the battery power cable supply the power from battery of engine room to starting motor. In the second example, it certified the fire by short phenomenon because of insulation tape melting wound wiring lined from battery to starting motor. In the third example, it sought for fire's cause that melting phenomenon the wire coating by overheated engine as the wire disconnected with connector by the vibration. Therefore, the fire of system including engine electric made in the danger the people in the car by failure of engine and other system. And than, the car's driver must manage and examine a vehicle conscientiously.
A Study on the Characteristics of Dual Fuel Engine Fueled by Natural Gas and Diesel
Kim, Changup ; Oh, Seungmook ;
Journal of the Korean Institute of Gas, volume 17, issue 6, 2013, Pages 20~26
DOI : 10.7842/kigas.2013.17.6.20
In this study, based on a 12L class diesel engine, a natural gas-diesel dual fuel engine was developed by adding natural gas fuel supply system. For optimal control of dual fuel engine, a conventional diesel engine ECU and a dual fuel ECU were utilized. To convert the dual fuel engine, MPI natural gas injectors were installed on the new modified intake manifold adapter. As a results, the dual fuel engine showed same level of torque, power performance and exhaust gas emissions as those of a diesel base engine.. Furthermore, overall fuel replacement rate was 70~76 % and total fuel cost saving was 37~40%.
Effects of Spark Plug Changes on Performance of an SI Engine Fueled by Gaseous Fuel
Lee, Sunyoup ;
Journal of the Korean Institute of Gas, volume 17, issue 6, 2013, Pages 27~32
DOI : 10.7842/kigas.2013.17.6.27
Renewable gas fuels such as biogas and landfill gas are obtained from the biodegradable organic wastes so that they inherently have carbon-neutral nature which can respond global warming. Therefore, attentions are paid to use this renewable gases as a main fuel for internal combustion engines. However, the composition of the fuel varies by its origin or conversion process, it is necessary to make stable combustion and accomplish high efficiency when used in power generating spark ignition (SI) engines. In this study, efforts have been made to investigate the effect of the composition of renewable gas fuel on the engine performance and exhaust emissions. In addition, a new spark plug with a long electrode was tested and compared with a base spark plug as a way to improve engine efficiency and reduce harmful emissions.
Measurement and Prediction of Fire and Explosion Properties of 3-Hexanone
Ha, Dong-Myeong ;
Journal of the Korean Institute of Gas, volume 17, issue 6, 2013, Pages 33~38
DOI : 10.7842/kigas.2013.17.6.33
For the safe handling of 3-hexanone(ethyl propyl ketone), this study was investigated the explosion limits of 3-hexanone in the reference data. The flash points and AITs(auto-ignition temperatures) by ignition delay time were experimented. The lower flash points of 3-hexanone by using closed-cup tester were experimented at
. The lower flash points of 3-hexanone by using open cup tester were experimented in
. This study measured relationship between the AITs and the ignition delay times by using ASTM E659 tester for 3-hexanone. The experimental AIT of 3-hexanone was at
. The lower explosion limit( LEL) by the measured lower flash point of 3-hexanone was calculated as 1.21 Vol%.
A Study on Remote Analysis of Fire Gas Using Open Path FT-IR
Cho, Nam-Wook ; Lee, In-Gu ; Lee, Jong-Cheon ;
Journal of the Korean Institute of Gas, volume 17, issue 6, 2013, Pages 39~45
DOI : 10.7842/kigas.2013.17.6.39
The gas generated from the fire which is continuous until material is completely burned. We can analyze usual gas using chromatography analysis but it can not be applicated to analyze for the gas from the fire because which gas is enormously generated. Besides, chromatography analysis has the disadvantage that it can not continuously analyze the sample's representativness, gas from the fire, Fourier transform infrared spectroscopy, FT-IR, has been utilized for effective combustion gas analysis method in small-scale combustion and on-line analysis has been attempted continuously. However, continuous sampling of 3.5l/min can not be representativness of sample if the gas caused by a massive fire and space. And the gas sampling is practically impossible in such a case. In this study, we attempted remote analysis while overcoming the disadvantages of the current gas analysis by using an Open-Path Infrared Analyzer without pre-treatment of the sampling. For the remote analysis, quantitative analysis method was established regarding each combustion toxic gases. And we measured the gases from the fire that occurs in the real case.
A Study on Improving Fatigue Life for Composite Cylinder with Seamless Integrated Liner
Kim, Hyo-Joon ;
Journal of the Korean Institute of Gas, volume 17, issue 6, 2013, Pages 46~51
DOI : 10.7842/kigas.2013.17.6.46
Composite cylinder is used by hydrogen fuel cell vehicles and natural gas vehicles because of high specific modulus, specific strength and fatigue resistance. composite cylinder has a seamless integrated liner and it is fully overwrapped with structural fibers of high strength carbon fibers in an epoxy matrix. In this study, filament winding pattern and autofrettage pressure design technique are presented considering structural weakness of knuckle and compressive residual stress. Presented methodology is verified by pressure cycling test of composite cylinders.
A Study on the Anti-impulsive Strength of the Helmets for a Gas Industry
Kim, Chung Kyun ; Kim, Tae Whan ;
Journal of the Korean Institute of Gas, volume 17, issue 6, 2013, Pages 52~57
DOI : 10.7842/kigas.2013.17.6.52
In this study, the strain energy density, stress and deformation behaviors have been analyzed as functions of a thickness and a force area of protective helmets with and without an extruder on the top of the shell structure using the finite element method. The strain energy density in which is related to the absorption capacity of an impact energy transfer is one of a key element of the helmet safety. The FEM analyzed results show that when the impulsive force of 4,540N is applied on the top surface of the helmets, the maximum stress is linearly reduced for an increased area of impact forces. But, the maximum strain energy density has been reduced for the increased force area. The reduced strain energy density may increase the impulsive forces transferred to the head and neck of helmet wearers, which may decrease the impact energy absorption safety of the helmets. In thus, it is safer design of the helmet in which has an extruded structure on the summit surface, but the modified helmet may decrease the impact energy absorption capacity.
A Study on MDA Analysis & blood chemical test for Mouse which were exposed HF Gases from Fire
Cho, Nam-Wook ; Oh, Eun-Ha ;
Journal of the Korean Institute of Gas, volume 17, issue 6, 2013, Pages 58~66
DOI : 10.7842/kigas.2013.17.6.58
Among the risks which can be faced with fire, combustion toxicity is a significant influence on the survival. Fire toxicity researches have been limited generally on the lethal aspects. In this study, HF gas which can be generated from fire, and also found in general industrial site was used for analysis. Blood analysis and biochemistry analysis performed to find internal demage of experimental animals which were used for measuring average activity stopping time from Animal test(KS F2271: Gas hazard test). In addition, Using the malondialdehyde analysis, indicators of oxidative damage, we had quantitative analysis to target lymphocyte for measuring the oxidative damage caused by toxic substances.
Measurement and Prediction of Flash Points of Acetic Acid-Formic Acid System using Cleveland Open Cup Apparatus
Ha, Dong-Myeong ; Lee, Sungjin ;
Journal of the Korean Institute of Gas, volume 17, issue 6, 2013, Pages 67~72
DOI : 10.7842/kigas.2013.17.6.67
The flash point is the lowest temperature at which there is enough concentration of flammable vapor to form an ignitable mixture with air. The flash point is a major physical property used to analyse the fire and explosion hazards of a flammable liquid solution. The flash point data for pure components are easily available in several literature. But the flash points of the flammable binary solutions appear to be scarce in the literature. The objective of this study is to measure and estimate the flash point of acetic acid-formic acid system. Cleveland open cup tester was used to measure the flash point. The experimental data were compared with the values estimated by the Raoult's law and the optimization methods based on van Laar and Wilson equations. As a result, the estmated values by optimization methods were found to be better than those based on the Raoult's law.
A Study for Safety Management on Road Transportation of Dangerous Goods
Lee, Bong-Woo ; Chung, Sung-Bong ; Kim, So-Young ; Choi, Dong-Hwang ;
Journal of the Korean Institute of Gas, volume 17, issue 6, 2013, Pages 73~82
DOI : 10.7842/kigas.2013.17.6.73
With remarkable development of industry and technology, various chemical articles are developed to improve the quality of human life, yet some of chemicals are hazardous to human and the environment. However, safety control of chemical articles such as transportation, storage, and handling is emerging as a major issue lately. The road transportation needs well-organized safety management system, especially it has high probability of accidents. In this research, we point out problems in current state and related regulation of transportation of dangerous goods to compare the regulation in UN-RTDG. In addition, we suggest the enhancement law, the plan for standardization of classification in road transportation of dangerous goods and harmonization of labeling in transportation of dangerous goods to contribute to human health and environment protection.
A Study on Zone-based Risk Analysis System using Real-time Data
Oh, Jeong Seok ; Bang, Hyo Jung ;
Journal of the Korean Institute of Gas, volume 17, issue 6, 2013, Pages 83~89
DOI : 10.7842/kigas.2013.17.6.83
Energy industry facilities can cause fatal damage for internal industry employee as well as external general people because handling various kinds of gas and harmful substance might be spread to large scale severe accident by fire, explosion, and toxic gas leakage. In order to prevent these accidents, quantification by damage effect on structure and human is tried by using quantitative risk assessment, but it is difficult to process instantly exceptional cases and requires knowledge of expert. This paper aims to minimize exceptional cases and knowledge of expert, and present risk with human perceptible. So, we designed and developed zone-base risk analysis system that can compute risk of zone in real time at that point using database and incremental model.