FIELD: construction of pipelines.
SUBSTANCE: pipeline comprises heat insulating layer, water-proof layer, and resistive electric heaters provided with the low-temperature leads connected with the power source through wires. The electric heaters are made of conducting textile and are composed of the heat-liberating threads arranged parallel to the edge electrodes. The additional electrodes are arranged uniformly along the resistive electric heater perpendicular to the conducting heat-liberating threads.
EFFECT: enhanced efficiency.
5 cl, 6 dwg
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Authors
Dates
2006-10-10—Published
2004-04-13—Filed