How should the heater manufacturer analyze the length of the tropical zone?

Although the electricity with the tropical good use, but before use must determine its power and the use of the length, the following we will discuss the following:

The maximum maintenance temperature must be higher than the maintenance temperature of the medium according to the selection of the corresponding series of electric companion tropics according to the amount of heat and the maintenance temperature. The length of the electric tropics is equal to the unforeseeable coefficient of the length multiplied by 1.1~1.2 when the heat dissipation per unit length is less than or equal to the electric power rating.

Electric heating is divided into two kinds, one is heating with PTC conductive plastic, a fever with alloy wire, but the effect is the same, to the pipeline, equipment, tanks, instrumentation and other heating, heating by heat loss to meet the environmental temperature to bring its heat to achieve. Compensation. Thus we need to calculate the parameters according to the condition of the site required size of the power electric heating, calculation formula, according to common sense is the highest power of tropical heat loss, maintain the temperature must be higher than the temperature of the medium, the DN50 pipeline for example: the quantity of heat per meter pipe is less than or equal to the steady state power or the rated power, the proportion of electrical length of the length of the tropical and pipeline 1.1~1.2. If the heat dissipation per meter pipe is greater than the power of electric heating, then we need to do some calculation.

Two parallel electric tropics can be used, so the length of the electric tropics is the length of the pipe length 

A tropical zone can be twisted in proportion, so the length of the electric tropics is the length of the pipe.

The pipe fittings need to be reserved for a certain electric tropics, including the installation of electric heat tracing fittings and the calculation of some allowance theory.

If the heat loss of the unit length is greater than the electric companion tropical power rating (that is, when the ratio is greater than 1), the following method is corrected.

Using two or more strips of parallel electric companion tropical laying, the electric companion tropical length is the length of the pipe and the number of roots.

According to the ratio of the heat dissipation to the power of the electric belt, the installation of the electrical and tropical winding is carried out, and the pitch of the winding is obtained. The electric companion tropical length is the length * ratio of the pipe. (this method should not be used in the situation where the installation space is more tense).

The thickness of the insulation material is increased or the insulation material with low thermal conductivity is selected.

The electric tropical length required for the pipe fittings. The flange adds two times the length of the dust tray diameter, the 2~3 length of the contact length between the pipe rack and the pipe on the metal pipe rack, the length of the reserved power supply is about 1 meters, the intermediate junction box and the tail end reserve 1 meters, and each valve plus the electric companion zone length of each meter tube is equal to the valve coefficient.

The sum of the length of the electric companion zone needed for the pipe fittings is calculated, plus the length of the electric companion zone of the heat tracing pipeline, which is the total length of the electric accompanying zone required by the whole system. To determine the power and length of electric tracing, the actual operation seems simple. Because of the lack of attention to professional knowledge and details, it is easy to leave a hidden danger, so we must operate carefully.