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.
- 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.
Colorado School of Mines1500 Illinois Street
Golden, CO United States 80401
- Kiyohashi, H
- Kawashima, T
- Ishihama, W
- Publication Date: 1974-5
- Pagination: 20 p.
- TRT Terms: Heat transfer; Heating (Structures); Operations; Pipeline transportation; Pipelines; Slurry pipelines
- Old TRIS Terms: Pipeline heating; Pipeline operating problems
- Subject Areas: Administration and Management; Design; Freight Transportation; Marine Transportation; Pipelines; Terminals and Facilities;
- 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