The power and length of the cartridge heater are proportional to each other. Do you know how long the cartridge heater 1000W is? First of all, to figure out where it is used, that is, what medium is used to heat, the surface load design of different media is not the same. The tube length can be calculated by "power = 3.14 * tube diameter (cm) * tube length (cm) * surface load" by determining the tube diameter.
First, how long is the cartridge heater 1000W?
Assuming the tube diameter is Φ16mm, let's calculate the length of the tube under different media.
1, the air is dry,
(1) Static air heating, 1-2 W/cm2, tube length: 995 mm;
(2) Flowing air heating, 1-4 W/cm2, tube length: 500 mm.
2, liquid heating,
(1) boiling water, 1-8.5 W/cm2, tube length: 235 mm;
(2) Heat transfer oil, 4-6W/cm2, tube length: 500-330mm;
(3) Heavy oil heating, 1 W/cm2, tube length: 1990 mm.
3, mold and mechanical equipment perforated insert type heating,
(1) common process, 1-4W/cm2, tube length: 500mm;
(2) Imitation import, 6-8W/cm2, tube length: 250mm;
(3) Imported materials, 1-22W/cm2, tube length: 90mm.
So the length is accroding to you heater media and company design, and the mold space.