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RESEARCH PAPERS: Arctic Engineering/Offshore Mechanics

The Coaxial Pipe Electric Heating System for Pipelines

[+] Author and Article Information
M. Koyanagi, H. Hojo, A. Nagamune, J. Ogata

Technical Research Center, Nippon Kokan Kabushiki Kaisha, Kawasaki, Japan

J. Energy Resour. Technol 105(4), 469-474 (Dec 01, 1983) (6 pages) doi:10.1115/1.3230955 History: Received February 22, 1982; Revised June 10, 1983; Online October 22, 2009

Abstract

To transport highly viscous crude oil efficiently through pipelines, some electric heating systems have been conventionally used. But they include heating cables or tubes, which are troublesome in submarine pipeline construction. A new electric heating system without a cable has been developed and is applicable to long-distance submarine pipelines. This system has a coaxial steel pipe structure, using the pipes as a heater by applying AC current to this coaxial circuit. In this paper, electromagnetic analysis on this system, experimental study using a 30-m length test pipeline, and mechanical tests on the electric insulating structure of the system are described.

Copyright © 1983 by ASME
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