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논문 기본 정보

자료유형
학위논문
저자정보

진상준 (고려대학교, 高麗大學校 大學院)

지도교수
鄭眞澤
발행연도
2015
저작권
고려대학교 논문은 저작권에 의해 보호받습니다.

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이 논문의 연구 히스토리 (4)

초록· 키워드

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In this study, the performance and economic analysis of a gas turbine combined cycle system using inlet air cooling and fuel pre-heating are performed.
Gas turbine combined cycle have been generally used for power generation. GTCC utilizes the exhaust gas from gas turbine by heat recovery steam generator. Therefore, it has advantages of producing high power output and high efficiency.
However, in a hot climate, the power output and efficiency of a gas turbine decline significantly as ambient temperature rises. To recover the power decrease, various inlet air cooling methods for gas turbine have been used. In this study, both inlet fogging method and mechanical chiller are studied as a means of cooling inlet air.
By the way, when mechanical chiller is used for inlet air cooling, the system efficiency is decreased because of chiller work. Therefore, fuel pre-heating is considered to enhance the system efficiency by utilizing low grade heat source from heat recovery steam generator.
This study discussed on the performance of gas turbine combined cycle by employing inlet air cooling and fuel pre-heating. The results show that inlet cooling and fuel pre-heating can enhance the power output and increase the efficiency of a gas turbine combined cycle. Also, annual operation of proposed system is performed by applying actual weather conditions in Seoul, Korea. Furthermore, economic analysis of a proposed system is performed. The results are compared in terms of levelized cost of electricity(LCOE) to show the cost effectiveness of the system. It is shown that LCOE of proposed system is lower than conventional combined cycle by increasing power output and system efficiency.

목차

목 차······································································ii
List of Figures···························································iv
List of Table···························································ⅷ
Nomenclature···························································ⅸ
제 1장 서 론···························································1
1. 1 연구 배경··············································1
1. 2 관련 연구 동향··············································6
1. 3 연구 목적··············································8
제 2장 연구 방법························································9
2. 1 전체 시스템···········································9
2. 2 시스템 모델링···········································11
2. 2. 1 해석 프로그램·································11
2. 2. 2 시스템 모델링·································12
2. 2. 3 탈설계 해석·································18
2. 3 입구공기 냉각 방법···········································20
2. 3. 1 입구공기 안개법·································20
2. 3. 2 기계식 칠러·································21
2. 4 연료 예열 방법··········································23
2. 5 경제성 분석 방법··········································25
제 3장 결과 및 고찰····················································28
3. 1 기존 시스템 성능·························28
3. 2 입구공기 냉각 적용 시스템 성능 ·························30
3. 2. 1 입구공기 안개법 적용···················30
3. 2. 2 기계식 칠러 적용···················33
3. 3 연료 예열 적용 시스템 성능·························37
3. 3. 1 열원 위치 선정···················37
3. 3. 2 추출 유량에 따른 성능변화···················39
3. 4 전체 시스템 성능·························43
3. 4. 1 시스템 성능 비교···················43
3. 4. 2 연간 운영성능···················46
3. 5 경제성 분석·························52
제 4장 결 론·····························································54
참 고 문 헌·····························································56

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