Modeling of laminar film condensation heat transfer in a vertical tube

【Author】

Dong Eok Kim;Moo Hwan Kim;

【Abstract】

A modeling for estimating the liquid film thickness and condensation heat transfer coefficient in a vertical tube, considering the effects of gravity, liquid viscosity, and vapor flow in the core region, is proposed. In particular, for calculating the velocity profile in the liquid film, the liquid is assumed to be in Couette flow forced by the interfacial velocity at the liquid-vapor interface. The interfacial velocity is calculated using an empirical power-law velocity profile. The film thickness and heat transfer coefficient from the new model are compared with existing experimental data and the original Nusslet condensation theory. The new model describes the liquid film thinning effect due to the vapor shear flow and predicts the condensation heat transfer coefficient from the experiments reasonably well.

【Keywords】

heat;Modeling of laminar film condensation heat transfer in a vertical tube;

References

To explore the background and basis of the node document

Springer Journals Database

Total: 15 articles

  • [1] P.K. Panday, Two-dimensional turbulent film condensation of vapours flowing inside a vertical tube and between parallel plates: a numerical approach, International Journal of Refrigeration,
  • [2] S.Z. Kuhn;;V.E. Schrock;;P.F. Peterson, An investigation of condensation from steam–gas mixtures flowing downward inside a vertical tube, Nuclear Engineering and Design,
  • [3] Seungmin Oh;;Shripad T. Revankar, Analysis of the complete condensation in a vertical tube passive condenser, International Communications in Heat and Mass Transfer,
  • [4] McAdams,W. H, Heat Transmission,

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