Pipe Tracing Cable
Darui Electric recommends
Most of the process pipelines and tank containers in China use traditional steam or hot water heat tracing. Electric heat tracing uses electrical energy to supplement the heat lost by the traced body during the process, thereby maintaining the most reasonable process temperature of the flowing medium. It is a high-tech product. Electric heat tracing provides uniform heat release along the length of the pipeline or over the large area of the tank volume, unlike electric heating that concentrates heat load at a point or small area. Electric heat tracing has a small temperature gradient, long thermal stability time, and is suitable for long-term use. The required heat (electric power) is much lower than that of electric heating. Electric heat tracing has the advantages of high thermal efficiency, energy saving, simple design, convenient construction and installation, no pollution, long service life, and the ability to achieve remote control and automatic control. It is the technological development direction to replace steam and hot water heat tracing, and is a national key energy-saving project.
Principle of Heat Tracing Tape
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When the heating cable is powered on (note that the end core wires must not be connected), current flows from one core wire through the conductive PTC material to the other core wire, forming a circuit. The electric energy heats the conductive material, and its resistance increases accordingly. When the temperature of the core tape rises to a certain value, the resistance becomes so large that it almost blocks the current, and the temperature no longer rises. At the same time, the heating tape transfers heat to the lower-temperature heated system. The power of the heating tape is mainly controlled by the heat transfer process, automatically adjusting the output power according to the temperature of the heated system, while traditional constant-power heaters do not have this function.
Advantages of Electric Heat Tracing
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Compared with steam (or hot water) heat tracing, electric heat tracing has many advantages as follows:
(1) Electric heat tracing has simple devices, uniform heating, accurate temperature control, and can achieve remote control and automated management.
(2) Electric heat tracing has explosion-proof and all-weather working performance, high reliability, and long service life.
(3) Electric heat tracing has no leakage, which is beneficial to environmental protection.
(4) Saves steel: It does not require the two-way heat tracing pipelines needed for steam heat tracing.
(5) Saves insulation materials.
(6) Saves water resources, unlike boilers that require large amounts of water daily.
(7) Electric heat tracing can also solve problems that are difficult to solve with steam and hot water heat tracing.
(8) Electric heat tracing has low design workload, convenient and simple construction, and low maintenance workload.
(9) High efficiency, can greatly reduce energy consumption
Whether it is one-time investment or annual operating cost, electric heat tracing tape is more economical than steam heat tracing tape. In some projects, the one-time investment of electric heat tracing tape may be slightly higher than that of steam or hot water heat tracing, but in terms of annual operating cost, the savings from electric heat tracing usually recover the investment within 1-2 years.
Benefit Analysis of Using Heat Tracing Tape
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