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Erschienen in:
1988 | OriginalPaper | Buchkapitel
Two-Phase Pressure Drop in Boiler Tubes
verfasst von : W. Koehler, W. Kastner
Erschienen in: Two-Phase Flow Heat Exchangers
Verlag: Springer Netherlands
Enthalten in: Professional Book Archive
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This lecture deals with pressure drop in the two-phase regime in boiler tubes. It describes possible methods of calculating the individual pressure drop components (hydrostatic and acceleration pressure drop and friction pressure loss). Use of the homogeneous flow model with its various formulations for calculation of the friction pressure loss is also discussed. The ways in which the wetted/unwetted condition of the heating surface affects pressure loss in heated tubes are described, and an approach to their mathematical representation is given. Finally, the calculation methods for use with rough tubes and rifled tubes are presented.