Phase change transfer - Condensation in special situations : Condensation on profiled surfaces

Condensation on profiled surfaces
Phase change transfer - Condensation in special situations

Author : Prabodh PANDAY

Review date: September 20, 2023 | Lire en français

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1. Condensation on profiled surfaces

Grégorig proposes to use the pressure gradient generated by surface tension forces to reduce the thickness of the condensate film on a convex fin and thus improve heat exchange. Let $R_{x}^{*}$ be the radius of curvature of the interface at an abscissa x; then we have : $Δ p = \frac{σ}{R_{x}^{*}} \Rightarrow \frac{d p}{d x} = σ \frac{d}{d x} (\frac{1}{R_{x}^{*}})$

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Condensation of steam mixtures

References

(1) - ADAMEK (T.), WEBB (R.L.) - Prediction of film condensation on horizontal integral fin tubes. - Int. J. Heat Mass Transfer, vol. 33, pp. 1721-1735 (1990).
(2) - BEATTY (K.O.), KATZ (D.L.) - Condensation of vapors on outside of finned tubes. - Chem. Engg. Progress, vol. 44, pp. 55-70 (1948).
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Condensation on profiled surfaces Phase change transfer - Condensation in special situations

1. Condensation on profiled surfaces

References

Condensation on profiled surfaces
Phase change transfer - Condensation in special situations