Journal of the Korean Institute of Gas (한국가스학회지)

The Korean Institute of GAS (한국가스학회)
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A Study on the Safety Management Methods of Micro-Gas Engine Combined Heat and Power System

소형 가스엔진 열병합발전 시스템의 안전관리 방안에 관한 연구

  • Kim, So-Hyun (Institute of Gas Safety R&D, Korea Gas Safety Corporation) ;
  • Kim, Min-Woo (Institute of Gas Safety R&D, Korea Gas Safety Corporation) ;
  • Lee, Eun-Kyung (Institute of Gas Safety R&D, Korea Gas Safety Corporation) ;
  • Lee, Jung-Woon (Institute of Gas Safety R&D, Korea Gas Safety Corporation)
  • 김소현 (한국가스안전공사 가스안전연구원) ;
  • 김민우 (한국가스안전공사 가스안전연구원) ;
  • 이은경 (한국가스안전공사 가스안전연구원) ;
  • 이정운 (한국가스안전공사 가스안전연구원)
  • Received : 2018.10.20
  • Accepted : 2018.12.11
  • Published : 2018.12.31
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Abstract

The distribution of the combined heat and power system is active as a solution to the instability of energy supply and environmental pollution caused by continuous industrial development. In Korea, the safety standards for combined heat and power system using a gas engine are insufficient therefore the study on this is needed. In this study, the safety performance and structural/material assessment items of domestic and international standards applied to the combined heat and power system were analyzed to carry out a standardization study on safety performance applicable to 20 kW gas engine combined heat and power system. In addition, the safety performance assessment (plan) of the gas engine combined heat and power system was derived by performing risk analysis and risk assessment using HAZOP. Assessment items include engine ignition systems related to safety performance, piping tight performance, watering and temperature rise performance, combustion performance, electrical efficiency, thermal efficiency, overall efficiency and humidity performance. Gas and water pipes, gas control and shut-off valves, durability, heat resistance, and cold resistance of metal or non-metallic materials related to the structure and materials of the gas engine combined heat and power systems.

지속적인 산업 발전에 따른 에너지 수급의 불안정 및 환경오염 문제가 대두됨에 따라 이에 대한 해결 방안의 일환으로 열병합발전 시스템의 보급이 활발해지고 있다. 국내의 경우 가스엔진을 이용한 열병합발전기의 안전성능에 대한 검사기준이 미비하므로 이에 대한 연구가 필요한 실정이다. 본 연구에서는 20 kW급 가스엔진 열병합발전 시스템에 적용 가능한 안전성능 관련 표준화 연구 수행을 위해 열병합발전 시스템의 국내 외 기준에 대한 안전성능 및 구조/재료 평가기준을 분석하였다. 또한, 위험요소 분석 및 HAZOP (Hazard and Operability Studies)을 이용한 위험성평가를 수행하여 가스엔진 열병합발전 시스템의 안전성능 평가(안)을 도출하였으며, 평가항목으로는 안전성능 관련 엔진 시동, 배관 기밀 성능, 살수 및 온도 상승 성능, 연소 성능, 전기 효율, 열효율, 종합 효율, 습도 성능 등이 포함된다. 가스엔진 열병합발전 시스템의 구조 및 재료와 관련하여 가스 및 수배관, 가스 조절 및 차단밸브, 금속 또는 비금속 재료의 내구성, 내열성, 내한성에 대한 평가항목을 도출하였다.

Keywords

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Fig. 1. The diagram of micro-combined heat and power system.

Table 1. Domestic and international standards for combined heat and power systems

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Table 2. Gas engine combined heat and power system safety performance assessment items

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Table 3. Method of combustion state performance assessment

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Table 4. Classification of safety performance assessment items

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Table 5. Analysis of risk factors for gas engine combined heat and power system

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Table 6. Result of HAZOP study of micro-gas engine combined heat and power systems

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Table 7. Structural and material assessment items of internal combustion engine power system

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Table 8. The list of gas engine CHP system safety performance assessment items

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