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- W2034238225 abstract "Abstract This paper discusses the occurrence of various flow patterns of a cold, upflowing two-phase stream in an aluminium plate-fin heat exchanger (PFHE) and their impact on the overall heat exchanger performance. Various flow patterns were observed in a flow visualization rig comprising a single PFHE passage. At high gas mass fluxes both phases flow uniformly upwards. When decreasing the gas flow, a reversing slug flow becomes more and more pronounced. In this flow pattern fluid particles of significantly different temperatures can mix within the same passage. If the number of transfer units (NTU) is high, the effective temperature difference against a hot stream of the exchanger decreases. At very low gas mass fluxes a sudden static instability with liquid logging was observed. The liquid zones thus appearing can cover and thus deactivate large portions of the heating area. In PFHE design both phenomena should be taken into account, particularly for exchangers with low mean temperature differences and heated multicomponent streams with large boiling ranges." @default.
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- W2034238225 date "1995-05-01" @default.
- W2034238225 modified "2023-09-27" @default.
- W2034238225 title "Plate-fin heat exchanger performance reduction in special two-phase flow conditions" @default.
- W2034238225 doi "https://doi.org/10.1016/0011-2275(95)95347-h" @default.
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