What factors need to be considered in electric heat tracing design?
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This post was last edited by ziyouruifeng on 2010-12-23 22:03. What should be considered when using electric heat tracing? Is there anything special that needs to be taken into consideration?
There are many types of electric heat tracing, with two commonly used ones: constant-power electric heat tracing and self-temperature-limiting electric heat tracing tapes. What specifically needs attention – the design or the construction? To be clear. For design, the following two standards can be referred to: HG/T20514-2000 Regulations for the Design of Heat Tracing and Insulation of Instruments and Pipelines, and SH3126-2001 Standards for the Design of Heat Tracing and Insulation in Petrochemical Instruments and Pipelines. For construction, follow the instructions provided by the manufacturer.
Thank you! We have both, because we are both the designers and sometimes the contractors.
In Class A workshops, it is recommended not to use electric heating, as it poses safety risks
Pay attention to moisture and rain protection; for the rest, follow the specifications
According to HG/T 20570.11, for the selection of insulation and heat retention types: When the temperature of the process medium that requires insulation is not high (usually the medium temperature needs to be maintained between 30–120°C), when there are no strict requirements regarding fire and explosion prevention, or in the case of equipment, pumps, and pipelines that are far away from steam sources, electric heating for insulation can be used. Electric heat tracing offers high efficiency, typically ranging from 80% to 90%. The temperature of the heating can be adjusted, and it features simple installation, reliable operation, and the need for little maintenance. However, since it is difficult to detect when the electric heating tape breaks, and it consumes a significant amount of electricity, its use is generally not recommended. It is only employed in pipelines and dead zones that are far from steam sources or lack steam, but where heat tracing is necessary.