Electrohydrodynamic pumping in cable pipes. Final report

Technical Report · Tue Feb 01 00:00:00 EST 1983

OSTI ID:6490241

Crowley, J M; Chato, J C

Many oil-insulated electric power cables are limited by heat buildup caused in part by the low thermal conductivity of the oil. Circulation of the oil is known to reduce the cable temperature, but can lead to excessive pressure buildup on long cables when using conventional pumping methods. An alternate pumping method using distributed electric fields to avoid this pressure buildup is described. Electrohydrodynamic (EHD) pumping was studied both theoretically and experimentally for possible application in underground cable cooling. Theoretical studies included both analytical and finite-element analysis of the flow patterns driven by travelling electric fields. Experimentally, flow rates in a cable-pipe model were measured under a wide variety of operating conditions. Theory and experiment are in agreement for velocities below 10 cm/s, but higher velocities could not be reached in the experiment, due to increased electroconvection and, possibly, turbulence.

• Research Organization: Illinois Univ., Urbana (USA)
• OSTI ID: 6490241
• Report Number(s): EPRI-EL-2834; ON: DE83901838
• Resource Relation: Other Information: Portions are illegible in microfiche products
• Country of Publication: United States
• Language: English

Related Subjects

24 POWER TRANSMISSION AND DISTRIBUTION
42 ENGINEERING
INSULATING OILS
PUMPING
OIL-FILLED CABLES
COOLING
PUMPS
OPERATION
PERFORMANCE
UNDERGROUND POWER TRANSMISSION
ELECTRIC FIELDS
ELECTROHYDRODYNAMICS
EXPERIMENTAL DATA
FLOW RATE
FLUID FLOW
THEORETICAL DATA
CABLES
CONDUCTOR DEVICES
DATA
ELECTRIC CABLES
ELECTRICAL EQUIPMENT
EQUIPMENT
FLUID MECHANICS
HYDRODYNAMICS
INFORMATION
MECHANICS
NUMERICAL DATA
OILS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
POWER TRANSMISSION
200300* - Electric Power Engineering- Power Transmission & Distribution- (-1989)
420400 - Engineering- Heat Transfer & Fluid Flow