ON HEAT TRANSFER AND PRESSURE DROP OF PIPELINE SLURRIES FOR PREVENTION OF FREEZING

This paper deals with the experimental works on heat transfer from limestone slurries to the inner surface of the horizontal circular pipe I.D. 27.9 mm and the pressure drop under turbulently flowing and cooling conditions without ice formation. The concentration of solids was varied from zero to about 50 percent by weight. Three particle sizes were selected in order to examine the qualitative and quantitative effect, if any, on the heat transfer and pressure drop. The mean particle sizes were approximately 25, 70 and 130 microns. As a result of the experiments it was found that the heat transfer coefficient h sub L was fairly well correlated with the Reynolds number Re sub B with Bingham plastic viscosity. An experimental formula for the wide range of particle sizes and concentrations of solids was obtained. But the correlation of a friction coefficient lambda with Re sub B was not well under the condition of lower Re sub B and lower concentration of solids for larger particle size. Additionally, this describes the results of some theoretical Calculations on preventing pipeline slurries from freezing for cases in naked, thermally insulated and buried steel pipelines.

  • Supplemental Notes:
    • Presented at HYDROTRANSPORT 3--Third International Conference on the Hydraulic Transport of Solids in Pipes, Colorado School of Mines, Golden, Colo., May 15-17, 1974. Sponsored by BHRA Fluid Engineering. Complete set of Conference papers available for $45.00.
  • Corporate Authors:

    Colorado School of Mines

    1500 Illinois Street
    Golden, CO  USA  80401
  • Authors:
    • Kiyohashi, H
    • Kawashima, T
    • Ishihama, W
  • Publication Date: 1974-5

Media Info

  • Pagination: 20 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00056470
  • Record Type: Publication
  • Source Agency: British Hydrodynamics Research Association
  • Report/Paper Numbers: Paper F3
  • Files: TRIS
  • Created Date: Jul 15 1974 12:00AM