Methodology for estimating dynamic and stationary parameters of re-liquefaction of liquefied petroleum gas (LPG) in storage spheres

Authors

  • Alexander Mendoza Acosta Instituto Tecnológico de los Mochis
  • Claudia Rodríguez Silva CRS Ingeniería
  • Hildeberto Hernández Frías Instituto Tecnológico de los Mochis

DOI:

https://doi.org/10.35197/rx.13.03.2017.09.am

Keywords:

hydrocarbon storage, liquefied petroleum gas (LGP), pressure vessels, heat transfer, refrigeration load

Abstract

The temperature difference between the environment and the liquid contained in the liquefied petroleum gas (LPG) storage spheres produces: a net heat flow towards the interior, an increase in the temperature of the stored fuel, partial vaporization of the same and consequently an increase in the storage pressure. To maintain adequate safety conditions, since uncontrolled increases in pressure could cause risk conditions and economic losses, re-liquefaction systems are installed, consisting of self-refrigeration units, which extract the evaporated gas, compress it and condense it again in a closed refrigeration cycle. These systems are frequently designed using heuristic criteria, without taking into account the calculations necessary for their sizing; this results in costly modifications or oversized equipment. This article presents a step-by-step, simple but effective methodology for calculating thermal loads, daily temperature increase rate, and pressure accumulation and recovery times. The methodology was compared with real values ​​by acquiring and processing data during the summer months of 2015 and 2016 from 12 storage spheres at a gas company located in a coastal state of the country, finding that the predicted values ​​for the daily temperature increase rate and recovery times are in statistical agreement with the experimental data.

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References

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Published

2017-05-21

How to Cite

Mendoza Acosta, A., Rodríguez Silva, C., & Hernández Frías, H. (2017). Methodology for estimating dynamic and stationary parameters of re-liquefaction of liquefied petroleum gas (LPG) in storage spheres. Revista Ra Ximhai , 13(3 Especial), 133–151. https://doi.org/10.35197/rx.13.03.2017.09.am

Issue

Vol. 13 No. 3 Especial (2017): julio-diciembre

Section

Artículos científicos

License

Copyright (c) 2017 Alexander Mendoza Acosta, Claudia Rodríguez Silva, Hildeberto Hernández Frías

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This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

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