• Journal of the Korean Institute of Gas
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• v.28 no.1
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• pp.65-72
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• 2024

Green Hydrogen demonstration complex is under conduction in Jeju island which is rich in renewable energy resources and will produces green hydrogen using a water electrolysis systems. In order to check durability of long-term operation, AST(accelerated stress test) was applied and the power pattern based on Jeju Island's wind power was applied. After 800 hours of repeated application of low current and high current, the performance of the PEM water electrolysis cell was reduced by up to 10% and by about 5.5% in operating conditions. As the result of impedance analysis, it can be seen that the electrode polarization resistance greatly increased than ohmic polarization resistance. In addition, when the durability evaluation was conducted by applying the wind power pattern of Jeju Island, the performance of the PEM water electrolysis cell showed up to 1.6% and a decrease of less than 1% in operating conditions. As a result of the impedance, it can be seen that the change of ohmic resistance and electrode polarization resistance is small.

• LP가스
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• v.22 no.4
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• pp.32-39
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• 2010

지난 6.8(화)~11(금) 지식경제부, 한국가스공사와 우리협회, 시범사업자 등 DME혼합연료 시범사업관련자 10여명은 DME-LPG혼합연료의 유통 및 소비자 보급에 앞서 해외 혼합 연료 이용기술개발 및 사용현황 조사를 위해 중국의 DME시설을 방문 견학했다. 관련내용을 게재한다.

• Air Cleaning Technology
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• v.3 no.1 s.9
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• pp.92-108
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• 1990

• Korean Chemical Engineering Research
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• v.62 no.1
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• pp.70-79
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• 2024

Raman analyzer is an analytical technique that utilizes the "Raman effect", which occurs when light is scattered by the inherent vibrations of molecules. It is used for molecular identification and composition analysis. In the natural gas industry, it is widely used in bunkering and tank lorry fields in addition to LNG export and import terminals. In this study, a LNG-specific Raman analyzer was installed and operated under actual field conditions to analyze the composition and principal properties (calorific value, reference density, etc.) of LNG. The measured LNG composition and calorific value were compared with those obtained by conventional gas chromatograph that are currently in operation and validated. The test results showed that the Raman analyzer provided rapid and stable measurements of LNG composition and calorific value. When comparing the calorific value, which serves as the basis for LNG transactions, with the results from conventional gas chromatograph, the Raman analyzer met the acceptable error criteria. Furthermore, the measurement results obtained in this study satisfied the accuracy criteria of relevant international standards (ASTM D7940-14) and demonstrated similar outcomes compared to large-scale international demonstration cases.

• 월간 기계설비
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• s.292
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• pp.95-98
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• 2014

지난 해 12월 개정된 세대 내 도시가스 은폐배관 점검구 설치 규정이 현실과 동떨어진 과도한 규제라는 지적에 따라 한국가스안전공사는 이를 완화하기 위해 여러 차례 회의를 한 결과 지난 9월 19일 개최된 제56차 가스기술기준위원회에서 '1개의 점검구 설치와 점검구 규격은 $900cm^2$'로 조정됐다. 그러나 대한설비건설협회 가스설비공사협의회(위원장 이두형, 이하 가스협의회라 함)는 "은폐배관과 관련하여 지금까지 단 한건의 가스누출 사고도 없었을 뿐만아니라 시공 구조 상 점검구가 필요치 않으며, 점검구가 꼭 설치해야 한다면 점검구 크기가 $10cm^2$면 충분하다"고 주장했다. 이처럼 최근 가스시공업계의 최대 이슈인 도시가스 은폐배관 점검구에 대해 자세히 알아본다.

• Journal of the Korean Institute of Gas
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• v.23 no.4
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• pp.46-64
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• 2019

Technical practice code, KGS GC101 2018, for explosion hazard area selection and distance calculation of gas facility was enacted and implemented from July 12, 2018. This code includes whole contents of IEC60079-10-1 2015 (Explosive atmospheres Part 10-1: Classification of areas - Explosive gas atmospheres), and clarifies the interpretation of ambiguous standards or adds guidelines for standards. KGS GC101 is a method for classifying explosion hazard place types: (1) Determination of leak grade (2) Determination of leakage hole size (3) Determination of leakage flow (4) Determination of dilution class (5) Determination of ventilation effectiveness, finally (6) Determination of danger place (7) Explosion The range of dangerous places can be estimated. In order to easily calculate this process, the program (KGS-HAC v1.14, C-2018-020632) composed by Visual Basic for Application (Excel) language was produced by Korea Gas Safety Corporation. We will discuss how to use codes and programs to select and set up explosion hazard zones for field users.

• The Korea Energy Engineers Association Reports
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• no.40
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• pp.4-4
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• 2005

산업자원부 - 에너지관리공단 - 한국지역난방공상 - 한국가스공사

• The Korea Energy Engineers Association Reports
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• no.42
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• pp.4-4
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• 2005

에너지관리공단 - 산업자원부 - 한국가스공사 - 건설교통부

• The Korea Energy Engineers Association Reports
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• no.37
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• pp.4-4
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• 2005

산업자원부 - 한국가스안전공사 - 에너지관리공단

• The Safety technology
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• no.93
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• pp.48-49
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• 2005