Recently, I have received many inquiries from visitors about carbon fiber infrared heating tubes. Below, I will introduce the heating principle of carbon fiber heating tubes and their main applications in various industries, and share my learning with you.

Heating process of carbon fiber heating tube: After the carbon fiber heating tube is electrified, it presents orange red light and generates infrared radiation to heat surrounding objects. The surface problem of the heating tube is above 500 ℃. The heating process combines three common heat transfer modes: thermal conduction, heat convection, and thermal radiation, with heat radiation heating being the main method.

Thermal conduction: The way in which heat is transferred from the warmer part of an object to the cooler part is called thermal conduction. Heat conduction can occur in solids, liquids, and gases, but strictly speaking, it is pure heat conduction only in solids. In daily life, one end of a hot iron rod can also feel heat on the other end, which is heat conduction. Additionally, when frying vegetables, the handle of the shovel can be too hot to handle, which is also a type of heat conduction.

Thermal convection/heat transfer: also known as convective heat transfer, refers to the process of heat transfer caused by the relative displacement of particles in a fluid. It can only occur in fluids (gas and liquid) and must be accompanied by the thermal conductivity generated by the molecular motion of the fluid itself. The most common type of heat convection in daily life is when boiling water.

Thermal radiation: The phenomenon of an object radiating electromagnetic waves due to its temperature, known as thermal radiation. All objects with temperatures above absolute zero can generate thermal radiation, and the higher the temperature, the greater the total energy radiated. The spectrum of thermal radiation is continuous, and the wavelength coverage range can theoretically range from 0 to ∞. Generally, thermal radiation mainly relies on visible and infrared light with longer wavelengths for propagation.

When the temperature is low, it mainly radiates with invisible infrared light. When the temperature is 300 ℃, the strongest wavelength of thermal radiation is in the infrared region. When the temperature of an object is between 500 ℃ and 800 ℃, the strongest wavelength component in thermal radiation is in the visible light region

The energy emitted (or absorbed) by a radiation source surface per unit time and area is related to the properties and temperature of the surface. The darker and rougher the surface, the stronger the ability to emit (absorb) energy. Any object radiates energy into the surrounding environment in the form of electromagnetic waves. When radiation electromagnetic waves encounter an object on its propagation path, they will stimulate the thermal motion of the microscopic particles that make up the object, causing it to heat up and heat up.

We can still feel heat at a distance from the flame, which is infrared radiation that makes us feel warm. Baking fire is the most common use of heat radiation, but the heat transfer mode of warming hands is not to be confused. The infrared emitted by the carbon fiber heating tube is in the same wavelength range as the infrared generated by the burning flame, with a wavelength range of 2.0-15 microns.

Food, textiles, paint, crops, and other substances are most easily absorbed in this range, so when these substances reach the infrared radiation emitted by carbon fiber heating tubes, they are more easily absorbed, which in turn converts infrared energy into heat, causing the temperature of the substance to rise and achieve the effect of drying, air drying, and heating. When using infrared for heating, the heated substance can maximize resonance due to the absorption of the same wavelength as the infrared wavelength, allowing the substance to absorb infrared heat as quickly as possible and the temperature to be raised as quickly as possible, thereby improving the heating effect and production efficiency.

Automotive industry:

The most common carbon fiber heating pipe in the automotive manufacturing process is the paint baking room.

Printing and dyeing industry:

Running machines, tunnel dryers, and mobile dryers in the clothing printing and dyeing industry are typical examples of infrared heating. After the carbon fiber heating tube is powered on, it presents an orange yellow light and emits infrared radiation, with a wavelength range of 2.0-15 microns, which matches the infrared wavelength absorbed by many textiles and water-soluble pigments. When using infrared for heating, the textile or pigment band that is heated is in the same range as the infrared band, which can maximize resonance and enable the material to quickly absorb infrared heat. The temperature is quickly raised, thereby improving the heating effect and production efficiency.