표제지
ABSTRACT
요약문
목차
NOMENCLATURE 11
GREEK LETTERS 12
SUBSCRIPTS 13
1. 서론 15
1.1. 연구배경 15
1.2. 연구 목적 및 내용 17
2. 시스템 구성 및 모델링 18
2.1. 시스템 구성 18
2.2. 시스템 모델링 20
2.2.1. 설계 해석 23
2.2.2. 탈설계 해석 27
3. 결과 및 분석 31
3.1. 동일한 TIT 조건에서 수소 혼소가 미치는 영향 31
3.2. 천연가스 기반 GTCC의 정격출력 조건에서 수소 혼소가 미치는 영향 37
3.3. 부분부하 운전에 따른 수소 혼소 GTCC 성능 변화 분석 43
3.4. 외기온 변화에 따른 수소 혼소 GTCC 성능 변화 분석 46
4. 결론 50
참고문헌 53
Table 1. Natural gas properties 20
Table 2. Design parameters of the gas turbine 21
Table 3. Design parameters of the gas turbine combined cycle 22
Table 4. Variation of combustion gas mole fraction according to hydrogen co-firing ratio 33
Table 5. Variation in GTCC performance according to hydrogen co-firing 36
Table 6. List of operation strategies in NG based GTCC power 37
Table 7. Variation of turbine inlet flow & pressure according to hydrogen co-firing ratio 39
Table 8. Variation of TIT & TET according to hydrogen co-firing ratio 39
Table 9. Variation in system performance according to cases 42
Table 10. Variation in TET according to GT partial load 44
Fig. 1. configuration of gas turbine combined cycle 19
Fig. 2. Configuration of gas turbine cooling system 24
Fig. 3. Temperature and heat transfer diagram of one pressure HRSG 25
Fig. 4. Compressor performance map 28
Fig. 5. Variation of combustor outlet gas constant, specific heat, specific heat ratio according to hydrogen co-firing ratio 34
Fig. 6. Variation of turbine inlet pressure & mass flow, TET according to hydrogen co-firing ratio 34
Fig. 7. Variation of gas turbine power and efficiency according to hydrogen co-firing ratio 35
Fig. 8. Variation in GT, ST and GTCC power according to cases 41
Fig. 9. Variation in GT efficiency according to GT partial load 45
Fig. 10. Variation in GTCC efficiency according to GT partial load 45
Fig. 11. GT load at TET limit according to hydrogen co-firing ratio 46
Fig. 12. Variation in GT efficiency in ambient temperature (0, 15 [℃]) 48
Fig. 13. Variation in GT efficiency in ambient temperature (15, 30 [℃]) 48
Fig. 14. Variation in GTCC efficiency in ambient temperature (0, 15 [℃]) 49
Fig. 15. Variation in GTCC efficiency in ambient temperature (15, 30 [℃]) 49