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Drag reduction with surfactants at elevated temperatures

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Summary

An unusual drag reducing behaviour of the nonionic surfactant Lubrol 17 A 10 in the presence of the electrolyte K2SO4 has been observed. The system shows normal turbulent flow behaviour at room temperature, but depicts an ability to reduce friction when flowing at a temperature at and around its cloud point. The consequences of this elevated temperature drag reduction have been discussed from the viewpoint of using drag reducers in central heating systems.

Zusammenfassung

Ein ungewöhnliches Widerstandsverminderungs-Verhalten wird bei dem nicht-ionischen oberflächenaktiven Stoff Lubrol 17A10 in Anwesenheit des Elektrolyten K2SO4 beobachtet. Das System zeigt bei Zimmertemperatur ein normales Turbulenz-Verhalten, erlangt dagegen bei einer Temperatur in der Nähe des Trübungspunktes die Fähigkeit, die Reibung herabzusetzen. Die Konsequenzen eines derartigen Widerstandsverminderungs-Effekts bei erhöhter Temperatur werden unter dem Gesichtspunkt der Verwendbarkeit solcher Additive in Zentralheizungs-Systemen diskutiert.

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  1. Department of Chemical Engineering, University of Salford, M 5 4 WT, Salford, England

    A. V. Shenoy

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  1. A. V. Shenoy
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Shenoy, A.V. Drag reduction with surfactants at elevated temperatures. Rheol Acta 15, 658–664 (1976). https://doi.org/10.1007/BF01524753

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  • DOI: https://doi.org/10.1007/BF01524753

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