Momentum transfer of ice slurry flows in tubes, modeling |
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Authors: | Beata Niezgoda-elasko Wojciech Zalewski |
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Affiliation: | Division of Refrigeration and Air Conditioning, Institute of Process and Power Engineering, Cracow University of Technology, al. Jana Pawła II 37, 31-864 Cracow, Poland |
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Abstract: | In this paper we present results of the studies of ice slurry flow in horizontal tubes. The possibility of treating the rheological parameters of ice slurry as being those of Bingham fluid was confirmed. The values of parameters (mass fraction, flow velocity) corresponding to the laminar, intermediate and turbulent flow were determined which permits to optimize the flow in the systems working with this cooling agent. Critical flow velocity and mass fraction of ice values were determined thereby; they correspond to a change in character of an ice slurry flow from a laminar to turbulent motion. Experimental results were compared to the analytical results, based on the Hedström and Tomita algorithms (the laminar and turbulent flow, respectively). The comparison showed a very good agreement between these data. |
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Keywords: | Refrigeration Ice slurry Horizontal tube Research Parameter Flow ExperimentMots clé s: Froid Coulis de glace Tube horizontal Recherche Paramè tre É coulement Expé rimentation |
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