Study of the vaporization rate of liquid nitrogen by smalland medium-scale experiments

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Potentially severe consequences associated to accidental liquefied natural gas (LNG) spills have motivated a number of different studies, including experimental work, towards their prediction. Most of these studies focus on vapour dispersion, however there is limited information regarding source term of vapour formation, which includes liquid spill, pool spreading and liquid vaporization rate. The present work investigates the contribution of different heat transfer mechanisms to the vaporization rate of cryogenic liquid through the series of small and medium-scale, well-controlled and instrumented experiments performed with liquid nitrogen (LN2). The vaporization rate of LN2 was measured and correlated to the individual contributions of conductive, convective and radiative heat transfer. The experiments on convection showed that this heat transfer mode can play a significant role in the vaporization rate of the cryogenic liquid. In these set of experiments, its contribution to total heat flux to an LN2 pool spilled on a concrete surface was measured to be as high as 30 % after 10 min for moderate wind speed of 2-3 m.s-1. The experimental data also showed that the sidewalls of the liquid containment may play a key role in the resulting amount of convective heat transfer and indicates that walls or fences could be used as a good mitigation method.

Original languageEnglish
Pages (from-to)133-138
Number of pages6
JournalChemical Engineering Transactions
Volume31
DOIs
Publication statusPublished - 2013

Fingerprint

Liquid nitrogen
Vaporization
Cryogenic liquids
Heat transfer
Hazardous materials spills
Liquids
Experiments
Vapors
Fences
Liquefied natural gas
Heat flux
Enthalpy
Concretes

ASJC Scopus subject areas

  • Chemical Engineering(all)

Cite this

Study of the vaporization rate of liquid nitrogen by smalland medium-scale experiments. / Olewski, Tomasz; Vechot, Luc; Mannan, Sam.

In: Chemical Engineering Transactions, Vol. 31, 2013, p. 133-138.

Research output: Contribution to journalArticle

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