LNG 냉열을 이용하는 암모니아-물 복합 재생 동력 사이클의성능 특성 = Performance Characteristics of a Combined Regenerative Ammonia-Water Based Power Generation Cycle Using LNG Cold Energy

다국어 초록 (Multilingual Abstract)

The ammonia-water based power generation cycle utilizing liquefied natural gas (LNG) as its heat sink has attracted much attention, since the ammonia-water cycle has many thermodynamic advantages in conversion of low-grade heat source in the form of sensible energy and LNG has a great cold energy. In this paper, we carry out thermodynamic performance analysis of a combined power generation cycle which is consisted of an ammonia-water regenerative Rankine cycle and LNG power generation cycle. LNG is able to condense the ammonia-water mixture at a very low condensing temperature in a heat exchanger, which leads to an increased power output. Based on the thermodynamic models, the effects of the key parameters such as source temperature,ammonia concentration and turbine inlet pressure on the characteristics of system are throughly investigated. The results show that the thermodynamic performance of the ammonia-water power generation cycle can be improved by the LNG cold energy and there exist an optimum ammonia concentration to reach the maximum system net work production.

참고문헌 (Reference)

1 김경훈, "저온폐열 활용을 위한 암모니아-물 혼합물을 작업유체로 하는 랭킨사이클에 관한 연구" 한국수소및신에너지학회 21 (21): 570-579, 2010

2 김경훈, "저온 열원 및 LNG 냉열을 이용하는 복합 발전 사이클의 성능 해석" 한국수소및신에너지학회 23 (23): 382-389, 2012

3 이근식, "액화천연가스 냉온열을 이용한 복합사이클의 설계 및 엑서지 해석" 대한설비공학회 17 (17): 285-296, 2005

4 F. Xu, "Thermodynamic properties of ammonia-water mixtures for power cycle application" 24 : 525-536, 1999

5 W. R. Wagar, "Thermodynamic performance assessment of an ammonia-water Rankine cycle for power and heat production" 51 : 2501-2509, 2010

6 B. Kiani, "Thermodynamic analysis of load-leveling hyper energy converting and utilization system" 33 : 400-409, 2008

7 G. S. Lee, "Thermodynamic analysis of extraction process for the utilization of the LNG cold energy" 36 : 35-40, 1996

8 J. Wang, "Thermodynamic analysis and optimization of an ammonia-water power system with LNG(liquefied natural gas)as its heat sink" 50 : 513-522, 2013

9 W. Nowak, "Possibilities of implementation of absorption heat pump in realization of the Clausius-Rankine cycle in geothermal power station" 28 : 335-340, 2008

10 T. S. Kim, "Performance enhancement of a gas turbine using LNG cold energy" 25 : 653-660, 1999

11 C. W. Kim, "Performance analysis of power generation cycle using LNG cold energy" Seoul National University 1993

12 S. M. Deng, "Novel cogeneration power system with liquefied natural gas(LNG)cryogenic exergy utilization" 29 : 497-512, 2004

13 S. T. Kim, "Improvement of Gas Turbine Performance Using LNG Cold Energy" 23 (23): 653-660, 1999

14 T. Yang, "Extension of the Wong-Sandler mixing rule to the threeparameter Patel-Teja equation of state : Application up to the near-critical region" 67 : 27-36, 1997

15 K. H. Kim, "Effects of ammonia concentration on the thermodynamic performances of ammonia-water based power cycles" 530 (530): 7-16, 2012

16 O. M. Ibrahim, "Design considerations for ammoniawater Rankine cycle" 21 : 835-841, 1996

17 K. H. Kim, "Comparative exergy analysis of ammonia-water based Rankine cycles with and without regeneration" 12 (12): 344-361, 2013

18 K. H. Kim, "Assessment of pinch point characteristics in heat exchangers and condensers of ammonia-water based power cycles" 113 : 970-981, 2014

19 K. H. Kim, "Analysis of transcritical organic Rankine cycles for low-grade heat conversion" 8 (8): 216-221, 2012

20 G. S. Lee, "Analysis of the liquefaction process of exhaust gases from an underwater engine" 18 : 1243-1262, 1998

21 Q. Wang, "Analysis of power cycle based on cold energy of liquefied natural gas and low-grade heat source" 24 : 539-548, 2004

22 V. A. Prisyazhniuk, "Alternative trends in development of thermal power plant" 28 : 190-194, 2008

23 O. M. Ibrahim, "Absorption power cycles" 21 : 21-27, 1996

24 H. J. Song, "A study on the power generation technology utilizing LNG cold energy" Korea Electric Power Research Institute 1985

25 T. Miyazaki, "A combined power cycle using refuse incineration and LNG cold energy" 25 : 639-655, 2000