A novel transcritical Rankine cycle is presented in this paper. This cycle adopts CO2 as its working fluid, with exhaust from a gas turbine as its heat source and LNG as its cold sink. With CO2 working transcritically, large temperature difference for the Rankine cycle is realized. Moreover, the CO2 in the gas turbine exhaust is further cooled and liquefied by LNG after transferring heat to the Rankine cycle. In this way, not only the cold energy is utilized, but also a large part of the CO2 from burning of the vaporized LNG is recovered. In this paper, the system performance of this transcritical cycle is calculated. The influences of the highest cycle temperature and pressure to system specific work, exergy efficiency and liquefied CO2 mass flow rate are analyzed. The exergy loss in each of the heat exchangers is also discussed. It turns out that this kind of CO2 cycle is energy-conservative and environment-friendly.
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ASME 2008 2nd International Conference on Energy Sustainability collocated with the Heat Transfer, Fluids Engineering, and 3rd Energy Nanotechnology Conferences
August 10–14, 2008
Jacksonville, Florida, USA
Conference Sponsors:
- Advanced Energy Systems Division and Solar Energy Division
ISBN:
978-0-7918-4320-8
PROCEEDINGS PAPER
A Transcritical CO2 Rankine Cycle With LNG Cold Energy Utilization and Liquefaction of CO2 in Gas Turbine Emission Available to Purchase
Meibin Huang,
Meibin Huang
Shanghai Jiaotong University, Shanghai, China
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Wensheng Lin,
Wensheng Lin
Shanghai Jiaotong University, Shanghai, China
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Hongming He,
Hongming He
Shanghai Jiaotong University, Shanghai, China
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Anzhong Gu
Anzhong Gu
Shanghai Jiaotong University, Shanghai, China
Search for other works by this author on:
Meibin Huang
Shanghai Jiaotong University, Shanghai, China
Wensheng Lin
Shanghai Jiaotong University, Shanghai, China
Hongming He
Shanghai Jiaotong University, Shanghai, China
Anzhong Gu
Shanghai Jiaotong University, Shanghai, China
Paper No:
ES2008-54050, pp. 231-237; 7 pages
Published Online:
June 22, 2009
Citation
Huang, M, Lin, W, He, H, & Gu, A. "A Transcritical CO2 Rankine Cycle With LNG Cold Energy Utilization and Liquefaction of CO2 in Gas Turbine Emission." Proceedings of the ASME 2008 2nd International Conference on Energy Sustainability collocated with the Heat Transfer, Fluids Engineering, and 3rd Energy Nanotechnology Conferences. ASME 2008 2nd International Conference on Energy Sustainability, Volume 2. Jacksonville, Florida, USA. August 10–14, 2008. pp. 231-237. ASME. https://doi.org/10.1115/ES2008-54050
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