Working principle of heating cable

Heating cable is a cable structure that uses electricity as energy and uses alloy resistance wire or far-infrared carbon fiber heating element to generate electricity and heat. It is called carbon fiber heating cable or carbon fiber heating wire. It is used in electric floor heating system, also known as carbon fiber floor heating, to achieve heating or insulation effect. Using alloy resistance wire, it is called heating cable, heating cable, metal heating cable. Its purpose is to heat residential space and antifreeze heating cable.

Working principle of heating cable:

The inner core of the heating cable is composed of cold wire and hot wire, and the outer core is composed of insulating layer, grounding layer, shielding layer and outer sheath. When the heating cable is energized, the hot wire heats up and works at a temperature of 40-60 °C. The heating cable buried in the filling layer transmits heat energy to the heated body through heat conduction (convection) and far infrared radiation of 8-13um.

Composition and working principle of the floor heating system by heating cable:

Power supply line → transformer → low-voltage power distribution device → household electricity meter → thermostat → heating cable → heat radiation to the room through the floor

a. Electricity as energy

b. Heating cable as heating element

c. Heat conduction mechanism of heating cable

(1) When the heating cable is energized, it heats up, and its temperature is between 40℃ and 60℃. Through contact conduction, it heats the cement layer around it, and then transmits it to the floor or tiles, and then heats the air through convection. The conducted heat accounts for 50% of the heat generated by the heating cable.

(2) The second part is that when the heating cable is energized, it generates 7-10 micron far infrared rays that are most suitable for the human body and radiate to the human body and space. This part of the heat also accounts for 50% of the heat generated, and the heating efficiency of the heating cable is close to 100%.

When the heating cable is energized, the hot wire composed of nickel metal alloy inside heats up and works at a low temperature of 40-60℃. The heating cable buried in the filling layer transfers heat energy to the heated body through thermal conduction (convection) and 8-13μm far infrared radiation.