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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 20, Issue 2 - Apr 2016
Volume 20, Issue 1 - Feb 2016
Selecting the target year
Improvement of Post-combustion CO
Capture Process using Mechanical Vapor Recompression
Jeong, Yeong Su ; Jung, Jaeheum ; Han, Chonghun ;
Journal of the Korean Institute of Gas, volume 20, issue 1, 2016, Pages 1~6
DOI : 10.7842/kigas.2016.20.1.1
In order to reduce the anthropogenic emission of greenhouse gases, CCS technology has emerged as the most promising and practical solution. Among CCS technology, post-combustion
capture is known as the most mature and effective process to remove
from power plant, but its energy consumption for chemical solvent regeneration still remains as an obstacle for commercialization. In this study, a process alternative integrating
capture with compression process is proposed which not only reduces the amount of thermal energy required for solvent regeneration but also produces
at an elevated pressure.
Strategy of Driver Selection in C3MR Process Considering Extraction Rate from Natural Gas Well
Lee, Sunkyu ; Lee, Inkyu ; Tak, Kyungjae ; Moon, Il ;
Journal of the Korean Institute of Gas, volume 20, issue 1, 2016, Pages 7~12
DOI : 10.7842/kigas.2016.20.1.7
Natural gas liquefaction process is essential to transport natural gas for long distances. Lots of compressors in this process are needed and the energy for these compressors can be supplied by drivers. Total driver cost can be changed by selecting various drivers. This study focused on the minimization of the driver cost to provide the energy to the compressors. Moreover, scenarios, extracting velocity is changed during whole operating period, are set with considering gas well capacity. The mathematical model was established by considering trade off relationship between the capital cost and the operating cost of the turbines. The model also considers the life time of the driver equipments. As the result, the driver cost of the optimized case was reduced by 6.4% than the base case.
Technical Consideration for Production Data Analysis with Transient Flow Data on Shale Gas Well
Han, Dong-kwon ; Kwon, Sun-il ;
Journal of the Korean Institute of Gas, volume 20, issue 1, 2016, Pages 13~22
DOI : 10.7842/kigas.2016.20.1.13
This paper presents development of an appropriate procedure and flow chart to analyze shale gas production data obtained from a multi-fractured horizontal well according to flow characteristics in order to calculate an estimated ultimate recovery. Also, the technical considerations were proposed when a rate transient analysis was performed with field production data occurred to only
transient flow. If production data show the
transient flow from log-log and square root time plot analysis, production forecasting must be performed by applying different method as before and after of the end of
linear flow. It is estimated by an area of stimulated reservoir volume which can be calculated from analysis results of micro-seismic data. If there are no bottomhole pressure data or micro-seismic data, an empirical decline curve method can be used to forecast production performance. If production period is relatively short, an accuracy of production data analysis could be improved by analyzing except the early production data, if it is necessary, after evaluating appropriation with near well data. Also, because over- or under-estimation for stimulated reservoir volume could take place according to analysis method or analyzer's own mind, it is necessary to recalculate it with fracture modeling, reservoir simulation and rate transient analysis, if it is necessary, after adequacy evaluation for fracture stage, injection volume of fracture fluid and productivity of producers.
A Study on the Economic Analysis for Installation Method of Storage Tank in LPG Filling Station
Huh, Yong-Jeong ; Lim, Ju-Yeon ; Youm, Moo-Youl ; Leem, Sa-Hwan ;
Journal of the Korean Institute of Gas, volume 20, issue 1, 2016, Pages 23~28
DOI : 10.7842/kigas.2016.20.1.23
"Eco-friendly" automobile has been a symbol of the Low Carbon, Green Growth strategy that Korea government decided to pursue. In line with the recent policy trend, a number of new LPG stations are being constructed. However, communities where mass storage are installed have been suffered from risk of serious accidents. In this work, economic analyses for different installation methods has been performed to prevent accidents in LPG filling station. The review shows that the underground storage is beneficial for the maintenance and the effective land use.
A Study on the Correlation of MESG and Explosion Pressure
Hwang, Kyungyong ; Shin, Woonchul ; Lee, Taeck-Kie ;
Journal of the Korean Institute of Gas, volume 20, issue 1, 2016, Pages 29~39
DOI : 10.7842/kigas.2016.20.1.29
Electrical apparatuses for use in the presence of explosive gas atmospheres have to be special designed to prevent them from igniting the explosive gas. Flameproof design implies that electrical components producing electrical sparks are contained in enclosures and withstand the maximum pressure of internal gas or vapours. In addition, any gaps in the enclosure wall have to designed in such a way that they will not transmit a gas explosion inside the enclosure to an explosive gas or vapours atmosphere outside it. In this study, we explained some of the most important physical mechanism of Maximum Experimental Safe Gap(MESG) that the jet of combustion products ejected through the flame gap to the external surroundings do not have an energy and temperature large enough to initiate an ignition of external gas or vapours. We measured the MESG and maximum explosion pressure of propane and acetylene by the test method and procedure of IEC 60079-20-1:2010.When the minimum MESG is measured, the concentration of propane, acetylene in the air is higher than the stoichiometric point and their explosion pressure is the highest value.
A Study for Failure Examples of Brake Judder with Abnormal Vibration of Disc Brake
Moon, Hak Hoon ;
Journal of the Korean Institute of Gas, volume 20, issue 1, 2016, Pages 40~45
DOI : 10.7842/kigas.2016.20.1.40
Brake judder is one of the most serous problems in automotive-brake systems.it has not been eradicated despite all the efforts that many researchers and engineers have made the reduce it by studying its causes and mechanisms. Brake discs play a significant role in judder.The driver experiences judder as vibrations in the steering wheel,brake pedal and floor.in the higher freqency range.the structural vibrations are accompanied by a sound. Brake judder primarily affects the comfort but could,when confronting an inexperienced driver for the first time,lead to faulty reactions and reduced driving safety.
A Study on the Pyrolysis and Combustion Properties on Industrial Plastics
Lim, Bosu ; An, Hyunghwan ;
Journal of the Korean Institute of Gas, volume 20, issue 1, 2016, Pages 46~51
DOI : 10.7842/kigas.2016.20.1.46
This study is analyzed by the test equipment of gas analyzer in order to discover the gas characteristics of industrial plastic under the pyrolysis and combustion. As results, first, the pyrolysis of polycarbonate was started at
. The combustion started at about
, and the weight decreased at the velocity was 0.03g/min. Second, in case of polyethyleneterephtalate, PET was finished at
after starting pyrolysis from
, and the weight decreased at the velocity of 0.044g/min. The pyrolysis velocity with the temperature of polyethyleneterephtalate rising was becoming slow and the pyrolysis temperature was higher with less added polyethyleneterephtalate.
An Study on Spray and Combustion Characteristics of Direct Injection LPG under Low Pressure Injection Condition
Hwang, Seong-Ill ; Chung, Sung-Sik ; Yeom, Jeong-Kuk ; Lee, Jin-Hyun ;
Journal of the Korean Institute of Gas, volume 20, issue 1, 2016, Pages 52~61
DOI : 10.7842/kigas.2016.20.1.52
Liquefied petroleum gas is regarded as a promising alternative fuel as it is eco-friendly, has good energy efficiency and output performance, practically and has high cost competitiveness over competing fuels. In spark-ignition engine, direct injection technology improves engine volumetric efficiency apparently and operates engine using the stratified charge that has relatively higher combustion efficiency. This study designed a combustion chamber equipped with visualization system by applying gasoline direct injection engine principle. In doing so, the study recorded and analyzed ignition probability and flame propagation process of spark-ignited direct injection LPG in a digital way. The result can contribute as a basic resource widespread for spark-ignited direct injection LPG engine design and optimization extensively.
Proposal and Analysis of DMR Process with Hydrofluorocarbon Refrigerants
Park, Jinwoo ; Lee, Inkyu ; Shin, Jihyun ; Moon, Il ;
Journal of the Korean Institute of Gas, volume 20, issue 1, 2016, Pages 62~67
DOI : 10.7842/kigas.2016.20.1.62
Natural gas, one of the cleanest fossil fuel, is liquefied to reduce its volume for the long distance transportation. Small size floating liquefied natural gas plant has small area that safe issue is highly considered. However, Dual Mixed Refrigerants (DMR) process has fire potential by using flammable refrigerants and N2 Expander process has low compressed energy efficiency which has high inherent process safety. Therefore, safe process with high compressed energy efficiency is constantly needed. This study suggested an alternative refrigerants to existing DMR process by using Hydrofluorocarbon which has high safety due to its non-flammable properties. As a result, it showed 34.8% lower compressed energy efficiency than DMR process that contains fire potential whereas 42.6% improved compressed energy efficiency than Single N2 Expander process. In conclusion, this research proposed safe process for small size floating liquefied natural gas plant while having high efficiency.