Heat-Traced Fluid Transfer Lines

Abstract

This paper discusses basic considerations in designing a heat tracing system using either team or electrical tracing. Four basic reasons to heat trace are dealt with: water freeze protection, chemical freeze protection, viscosity maintenance, and maintenance of a fluid above its dew point.

Steam tracing was the first method used for tracing and remains the most widely used. Electric tracing is widely used where close temperature control at elevated temperatures is required. The prefabricated/preinsulated bundle concept eliminates many of the problems encountered in hand fabrications. These bundles provide uniform contact between tubes, insulation that has been pre-engineered for the given purpose, and a flexible, waterproof jacket.