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ISSN Online: 2377-424X

International Heat Transfer Conference 12
August, 18-23, 2002, Grenoble, France

Predictive Modelling of Steam Condensation onto Finned Tubes in Presence of Aerosols and Non-Condensable Gases, under Cross Flow Conditions

Get access (open in a dialog) DOI: 10.1615/IHTC12.5370
6 pages

要約

In this paper we present a mechanistic model to predict the steam condensation on containment finned tube heat exchangers in the presence of non-condensable gases (NC) and aerosols. The total thermal resistance from the bulk gas to the coolant is formulated as a parallel combination of the convective and condensation gas resistances coupled in series to those of condensate layer, the aerosol fouling layer, the wall, and the coolant. The condensate layer thermal resistance is calculated by means of an Adamek-based model. The fouling layer is computed based on diffusiophoresis, settling and impactation mechanisms. Finally the gas mixture thermal resistance is formulated based on diffusion layer modeling. The model results are compared with available experimental data.