Imperial College London
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ProfessorVelisaVesovic

Faculty of Engineering, Department of Earth Science & Engineering

Professor of Transport Phenomena
 
 
 
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Contact

 

+44 (0)20 7594 7352v.vesovic

 
 
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Location

 

2.33Royal School of MinesSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Migliore:2017:10.1016/j.energy.2017.02.068,
author = {Migliore, C and Salehi, A and Vesovic, V},
doi = {10.1016/j.energy.2017.02.068},
journal = {Energy},
pages = {684--692},
title = {A non-equilibrium approach to modelling the weathering of stored Liquefied Natural Gas (LNG)},
url = {http://dx.doi.org/10.1016/j.energy.2017.02.068},
volume = {124},
year = {2017}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - A  model  is  proposed  to  predict  the  weathering  of  LNG  stored  in  containment  tanks.  It  dispenses with  a  standard  approximation where the temperature  of  the  generated  vapour  within  the  tank  is  assumed  to  be  the  same  as  that  of  the  stored  LNG.  Instead,  it  treats  the  heat  influx  from  the  surroundings into the vapour and liquid phases separately and allows for the heat transfer between the  two  phases.  The  model  was  validated  only  by  comparing  with  the  compositional  data,  as  no  reliable measurements of vapour temperature are available.The simulation results indicate that the temperature of the vapour phase will be higher than that of the LNG, by  approximately  8 0C  over  a  period  of  one  year,  providing  the  heat  transfer  from  the  vapour  is  by  conduction  only;  thus  supporting  circumstantial  industrial  findings.  The  effect  on  the  Boil-off Gas (BOG) is considerable and the results indicate that the BOG rate will decrease by as much  as  25%  for  particular  scenarios.  This  has  important  consequences   for  weathering  models  used in industry, which currently assume isothermal conditions within the containment tanks. In the initial stages of weathering, the nitrogen content of LNG will have a marked effect on the rate of BOG generation. The lowest BOG rate is observed when the LNG contains approximately 1.4-1.5% of nitrogen.
AU  - Migliore,C
AU  - Salehi,A
AU  - Vesovic,V
DO  - 10.1016/j.energy.2017.02.068
EP  - 692
PY  - 2017///
SN  - 0360-5442
SP  - 684
TI  - A non-equilibrium approach to modelling the weathering of stored Liquefied Natural Gas (LNG)
T2  - Energy
UR  - http://dx.doi.org/10.1016/j.energy.2017.02.068
UR  - http://hdl.handle.net/10044/1/44666
VL  - 124
ER  -
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