Thermodynamic Analysis of an Integrated System for LNG Regasification and Power Production
Keywords:LNG, Regasification, Exergy, Rankine cycle, Power generation
Today, natural gas is used in domestic as well as for various industrial purposes. Natural gas being found in remote and specific locations, it has to be transported for long distance before supplied to customers around the globe. Producing liquefied natural gas (LNG) is a highly energy intensive process and consumes about 10 â€“ 15% of total energy spent for LNG production.Â However, eventually for the end use, natural gas need to be supplied in its gaseous form and the process is known as regasification.Â Energy spent for the liquefaction of natural gas is wasted unless it is recovered during this regasification process. Cold exergy of LNG can be utilized for improving the performance of Rankine cycle based power plants. This paper has proposed a power system in which low temperature waste heat can be effectively recovered and LNG can be vaporized to atmospheric conditions. The system consists of propane Rankine cycle and LNG power generation system using direct expansion. It is modeled by considering mass and energy balance in each component. The result shows that proposed cycle has good in performance and gives an exergy efficiency of 37.25 %. The effect of key parameters on system performance was also investigated.
Saeid Mokhatab, John Y. Mak, Jaleel V.Valappil, â€œHandbook of Liquefied Natural Gasâ€, Gulf professional publications, 2014
Rijo Jacob Thomas, Parthasarathi Ghosh, Kanchan Chowdhury,â€ Exergy analysis of helium liquefaction systems based on modiï¬ed Claude cycle with two-expandersâ€, Cryogenics 51 (2011) 287â€“294
Yongliang Li, Haisheng Chen, Yulong Ding, â€œFundamentals and applications of cryogen as a thermal energy carrier: A critical assessmentâ€, International Journal of Thermal Sciences 49 (2010) 941-949
Huan Wang , Xiaojun Shi , Defu Che, â€œThermodynamic optimization of the operating parameters for a combined power cycle utilizing low-temperature waste heat and LNG cold energyâ€, Applied Thermal Engineering 59 (2013) 490- 497
â€œASHRAE STANDARD Designation and Safety Classification of Refrigerantsâ€, ANSI/ASHRAE Standard 34-2011
The exergy method for thermal plant analysis, TJ Kottas, University of London, (1995)
Celidonio Dispenza, Giorgio Dispenza, â€œExergy recovery during LNG regasiï¬cation: Electric energy production â€“ Part oneâ€, Applied Thermal Engineering 29 (2009) 380â€“387
Mohammed A. Khatita, Tamer S,â€ Power generation using waste heat recovery by organic Rankine cycle in oil and gas sector in Egypt: A case studyâ€, Energy 64 (2014) 462-472
Kyoung Hoon Kim, Jae Hyeong Oh, and Hyung Jong Ko, â€œPerformance Analysis of Ammonia-Water Power Generation Cycle Utilizing LNG Cold Energyâ€, Journal of Automation and Control Engineering Vol. 3, No. 1, February (2015)
Yogi Goswami, Huijuan, â€œA review of thermodynamic cycles and working fluids for conversion of low grade heatâ€, Renewable and sustainable Energy reviews 14 (2010)
M. Chys, Broek, â€œPotential of zeotropic mixtures as working fluids in organic Rankine cycleâ€, Energy 44 (2012)
Nicolas and Fabrice, â€œvalidation CATHARE code against experimental data from Brayton cycle power generation systemsâ€ Nuclear engineering and design 238 (2008)
Satish Kumar, Hyouk-Tae Kwon, â€œLNG: An eco-friendly cryogenic fuel for sustainable developmentâ€, Applied Energy 88 (2011) 4264â€“4273
Ung Lee, Chonghun Han, â€œDesign and optimization of multicomponent organic Rankine cycle using Liquefied natural gas cryogenic exergyâ€, Energy 77 (2014), 520-532
Randall F. Barron, â€œCryogenic systems, Second edition 1985â€, Oxford University
How to Cite
- Papers must be submitted on the understanding that they have not been published elsewhere (except in the form of an abstract or as part of a published lecture, review, or thesis) and are not currently under consideration by another journal published by any other publisher.
- It is also the authors responsibility to ensure that the articles emanating from a particular source are submitted with the necessary approval.
- The authors warrant that the paper is original and that he/she is the author of the paper, except for material that is clearly identified as to its original source, with permission notices from the copyright owners where required.
- The authors ensure that all the references carefully and they are accurate in the text as well as in the list of references (and vice versa).
- Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Attribution-NonCommercial 4.0 International that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
- Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
- Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
- The journal/publisher is not responsible for subsequent uses of the work. It is the author's responsibility to bring an infringement action if so desired by the author.