JOURNAL BROWSE
Search
Advanced SearchSearch Tips
Prediction of boil-off gas and boil-off rate in cargo tank of NGH carrier
facebook(new window)  Pirnt(new window) E-mail(new window) Excel Download
 Title & Authors
Prediction of boil-off gas and boil-off rate in cargo tank of NGH carrier
Kang, Ho-Keunn; Kim, Dongeum; Kim, You-Taek; Park, Jung-Dae; Kang, Shin-Baek;
  PDF(new window)
 Abstract
Natural gas hydrates are newly emerging as an environment-friendly source of energy to substitute for fossil fuels in the 21stcentury.NGHs are reported to holds much amounts of natural gas (up to 182 standard volumes of gas per volume of hydrate); they are easy to store and safe to carry at about minus 20 degree Celsius under atmospheric pressure because of the self-preservation phenomenon of gas hydrates. The transporting method by gas-ice-hydrate ship carriers has been introduced and developed by a variety of industry and research institutions. Our team has been conducted to develop NGH total systems, including a breakthrough NGH carrier for sea transportation, since 2011. The NGH pellet carrier does not require a separate cooling system for cargo, and the initial temperature is maintained through insulation of the cargo tanks throughout the transport to the final destination. The heat conducted from the exterior and passing through the insulation material of the hull should be cut off as much as possible, but heat inflow inside the cargo tank from an external source is inevitable during transport. In this study, the heat transfer in a cargo tank of a 115K NGH carrier was analyzed through simulation with a commercial CFD code to estimate the boil-off gas/boil-off rate on the developed carrier and understand major hazards that could significantly impact the safety of the vessel.
 Keywords
Natural gas hydrate;Gas carrier;Boil-off gas;Boil-off rate;Risk analysis;Computational fluid dynamic;System design;IMO;
 Language
English
 Cited by
 References
1.
J. S. Gudmundsson and A. Borrehaug, "Frozen hydrate for transport of natural gas," Proceedings of the 2nd International Conferenceon Natural Gas Hydrates, Toulouse, pp.415-422, 1996.

2.
H. Kanda, "Economic study on natural gas transportation with natural gas hydrate (NGH) pellets," Proceedings of the 23rd World Gas Conference, Amsterdam, 2006.

3.
T. Nogami, N. Oya, H. Ishida, and H. Matsumoto, "Development of natural gas ocean transportation chain by means of natural gas hydrate (NGH)," Proceedings of 6th International Conference on Gas Hydrates, 2008.

4.
D. C. Lee, R. D. C. Barro, and J. G. Nam, "Synchronization and identification of ship shaft power and speed for energy efficiency design index verification," Journal of the Korean Society of Marine Engineering, vol. 38, no. 2, pp. 123-132, 2014. crossref(new window)

5.
S. Ota, H. Uetani, and H. Kawano, "Use of methane hydrate pellets for transportation of natural gas -III -Safety Measures and conceptual design of natural gas hydrate pellet carrier," Proceedings of 4th International Conference on Gas Hydrates, 2002.

6.
S. Ota, H. Shirota, T. Nakata, and S. Yuasa, "Development of guidelines for safety of ships carrying natural gas hydrate pellets in bulk," Proceedings of the 7th International Conference on Gas Hydrates (ICGH 2011), 2011.

7.
G. Rehder, R. Eckl, M. Elfgen, A. Falenty, R. Hamann, N. Kaehler, W. F. Kuhs, H. Osterkamp, and C. Windmeier, "Methane hydrate pellet transport using the self-preservation effect: A techno-economic analysis" Energies 2012, vol. 5, pp. 2499-2523, 2012.

8.
Y. H. Lee, Y. T. Kim, and H. K. Kang, "An analysis on the characteristics of regasification system for LNG-FSRU depending on the changes in performance with vaporization and temperature of the heat source," Journal of the Korean Society of Marine Engineering, vol. 38, no. 6, pp. 625-631, 2014. crossref(new window)

9.
SUGAR (2008), http://ifm-geomar.de/, Accessed October 20, 2010.

10.
K. Kim, Y. Kim, and H. Kang, "Recent Advances in Natural Gas Hydrate Carriers for Gas Transportation -A Review and Conceptual Design," Journal of the Korean Society of Marine Engineering, vol. 38, no. 5, pp. 589-601, 2014. crossref(new window)

11.
K. Kim, H. Kang, and Y. Kim, "Risk assessment for natural gas hydrate carriers: A hazard identification (HAZID) study," Energies 2015, vol. 8, pp. 3142-3164, 2015.

12.
IMO. MSC 83/INF.3, "FSA - Liquefied Natural Gas (LNG) carriers details of the formal safety assessment" 2007.

13.
IMO. MEPC 58/INF.2, "FSA - Crude oil tankers. London",2008.

14.
S. B. Park, M. J. Sim, M. S. Kim, J. H. Kim, and J. M. Lee, "A study of thermo-mechanical analysis for the design of high pressure piping system for natural gas fuel vessel," Journal of the Korean Society of Marine Engineering, vol. 39, no. 4, pp.425-431, 2015. crossref(new window)

15.
G. B. Lee, J. H. Jang, S. K. Lyu, and J. Y. Yu, "Electric power system design and analysis for FLNG vessel," Journal of the Korean Society of Marine Engineering, vol. 38, no. 5, pp. 573-580, 2014. crossref(new window)

16.
FLUENT 14.0. Manual 2011, User's guide - Chapter 13 Modeling heat transfer, P13.

17.
IMO, IGC 83/90 Amend/annex/Chapter 7/7.1.2, Design temperature.