Strathprints Home | Open Access | Browse | Search | User area | Copyright | Help | Library Home | SUPrimo

High pressure falling sinker liquid viscosity determination without supplementary density data : a new approach

Zeng, Minyu and Schaschke, C.J. (2009) High pressure falling sinker liquid viscosity determination without supplementary density data : a new approach. International Journal of Chemical Engineering, 2009. ISSN 1687-806X

[img]
Preview
PDF - Published Version
Download (707Kb) | Preview

    Abstract

    Accurate measurement and determination of liquid viscosity data under high pressure conditions requires knowledge of liquid density data. In this study, a high pressure falling sinker-type viscometer was used to determine the viscosity of n-dodecane at elevated pressures up to 132 MPa without supplementary knowledge of liquid density. The viscometer, which involves the downward movement of a cylindrical sinker under the influence of gravity through the liquid contained within a closed tube, avoided the need for density data by repeating the sinker-timing experiments with two geometrically similar but different sized sinkers thereby allowing the liquid density in the associated formulae to be eliminated. Furthermore, it was possible to subsequently derive liquid density. Both viscosity and density data were compared to published data for which good correlation was found for viscosity. To minimize errors, it is suggested that the two sinkers for such an approach should be of sufficiently differing densities.

    Item type: Article
    ID code: 14394
    Keywords: liquid viscosity, falling sinker, high pressure, new approach, determination, supplementary density data, Chemical engineering, Chemical Engineering(all)
    Subjects: Technology > Chemical engineering
    Department: Faculty of Engineering > Chemical and Process Engineering
    Related URLs:
      Depositing user: Professor C.J. Schaschke
      Date Deposited: 22 Jan 2010 20:44
      Last modified: 05 Sep 2014 13:22
      URI: http://strathprints.strath.ac.uk/id/eprint/14394

      Actions (login required)

      View Item

      Fulltext Downloads: