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fundamentos da ebulição - LEPTEN - Universidade Federal de ...

fundamentos da ebulição - LEPTEN - Universidade Federal de ...

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Stephan e Ab<strong>de</strong>lsalam (1980)hsa=0,7450,581⎛ kl⎞⎛qdb⎞ ⎛ ρl0,533207 PrlRpdbklT⎟ ⎞⎜⎟⎜⎟⎜⎝ ⎠⎝sat ⎠ ⎝ ρv ⎠0,133on<strong>de</strong> Pr l , R p e d b representam o número <strong>de</strong> Prandtl dolíquido, a rugosi<strong>da</strong><strong>de</strong> <strong>da</strong> superfície (µm) e o diâmetro <strong>da</strong>bolha <strong>da</strong>do por:db=⎛0,0149θ⎜⎝g2σ( ρ − ρ )lv⎞⎟⎠0,5Cooper (1984)hcooperbr−0,55−0,50, 67( −0,4343lnp ) M= 55pqrb = 0,12 – 0,08686 ln (R p ), pr é a pressão reduzi<strong>da</strong> e M o pesomolecular do fluido.

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