1. Straight winding: one or more electric tropics are placed in a straight line along one side of the pipeline, and the electric heat trace is fixed with aluminum foil tape or installed aluminum tape, and the fixed spacing is not greater than at the lower end of the pipeline.
2. Wave winding: the electric tropics are conformed to the pipeline in a wave type, and the tropical length of the electric power required per meter of the pipeline is determined according to the design of the load per meter, and then the radius of wave curvature R is determined, and the wave amplitude should be made as uniform as possible when laying to ensure the uniform heat dissipation of the cable system, and the heat trace is pasted along the wave curve with aluminum foil tape, or pasted with aluminum tape to the bend.
3. Spiral winding: the electric cable is evenly wound on the pipe in a spiral shape according to the required length of each meter of pipeline, fixed in the spiral direction with aluminum tape, or fixed with aluminum tape and the upper end of the pipe.
Electric tracing is to use the energy of electric heating to supplement the heat lost by the heat being traced in the process flow, so as to maintain the most reasonable process temperature of the flow medium, which is a high-tech product. Electric heat tracing is uniform heat release over a large area along the length of the pipeline or tank volume, which is different from electric heating where the heat load is highly concentrated at one point or small area.
Extended Information:
Uniform heat release over a large area along the length of the pipeline or tank volume, which is different from electric heat tracing where the heat load is highly concentrated at one point or small area; The electric heating temperature gradient is small, the thermal stability time is long, suitable for long-term use, and its required heat (electrical power) is much lower than that of electric heating.
As an effective pipe insulation and freeze protection solution, it has been widely used. Its working principle is to emit a certain amount of heat through the heat tracing medium, and supplement the loss of the heat tracing pipeline through direct or indirect heat exchange to achieve the normal work requirements of heating, heat preservation or freeze protection.
After the electric trace is connected to the power supply (note that the tail core must not be connected), the current is passed from one core through conductive PTC material to the other core to form a loop.
Electric energy heats up the conductive material, its resistance increases, when the temperature of the core band rises to a certain value, the resistance is large enough to almost block the current, its temperature no longer rises, and the electric cable transfers heat to the heating system with a lower temperature. The power of the electric heat trace is mainly controlled by the heat transfer process, and the output power is automatically adjusted according to the temperature of the heated system, while the traditional constant power heater does not have this function.
