| 학회 |
한국화학공학회 |
| 학술대회 |
2014년 봄 (04/23 ~ 04/25, 창원컨벤션센터) |
| 권호 |
20권 1호, p.1123 |
| 발표분야 |
윤인섭 교수 정년 기념 심포지엄(지속가능 성장을 위한 공정시스템의 미래) |
| 제목 |
Design and optimization of combined rankine cycle for waste heat recovery of a coal power plant using LNG cryogenic exergy |
| 초록 |
In this study, a combined Rankine cycle was modeled and optimized. By integrating the CO2-Organic Rankine cycle (ORC) with the steam cycle and a liquefied natural gas (LNG) evaporation process, the combined cycle is able to extract additional power without consuming additional fossil fuel. Unlike conventional ORC, the CO2-ORC utilizes the low grade waste heat only for super heating of working fluid while main evaporation process is achieved by sea water. The CO2 condensation process in the ORC takes place lower than the ambient temperature by coupling with the LNG evaporation system. Furthermore, fraction of liquefied CO2 is purged for the sequestration. Therefore, CO2 liquefaction can be achieved without additional refrigeration cycle. This process not only produces more power with same fuel consumption but reduces CO2 removal energy. The gross power is increased from 42.21 to 90.54 MWe and total CO2 removal energy is decreased about 9%. The optimum design and operating conditions were also obtained through parameter sensitivity analysis. |
| 저자 |
한종훈, 이 웅
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| 소속 |
서울대 |
| 키워드 |
CO2; CCS; ORC; Combined Cycle; LNG
|
| E-Mail |
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| 원문파일 |
초록 보기 |
