Difference between PTC heater and traditional electric heating element

Difference between PTC heater and traditional electric heating element.

Compared with the traditional electric heating tube, PTC heater has the following advantages

1 Safety

When the fan stops or stalls in case of fault, the surface temperature of the heater is maintained at the limited safe temperature (generally 230 ℃), so that the phenomenon of "red" on the surface will not occur, and the hidden danger of the accident is eliminated.

2 energy saving

When the ambient temperature rises, the resistance will gradually increase, and then the power will gradually decrease. When the ambient temperature is stable, the power will stop changing, so as to achieve the effect of energy saving.

3. High heat conversion rate

It has long life and is less affected by external voltage.

PTC heater is superior to the traditional electric heating tube in all aspects of performance through careful design.

The difference between PTC electric heater and traditional electric heating tube is as follows:

principle

PTC electric heater is a kind of heater with automatic temperature control and power saving. It is a kind of heater with PTC thermistor as heat source and corrugated sheet made of aluminum alloy as radiator.

High temperature resistance wires are evenly distributed in the seamless tube of high temperature resistant stainless steel, and crystalline magnesia powder with good thermal conductivity and insulation performance is compactly filled in the gap. This structure is not only advanced, high thermal efficiency, but also uniform heating. When there is current in the high temperature resistance wire, the heat generated diffuses to the surface of the metal tube through the crystalline magnesia powder, And then transferred to the heated parts or air to achieve the purpose of heating.

advantage

1. The heating temperature is below 200 ℃

2. Low production cost

3. In any case, the body is not red and has a protective isolation layer

4. Strong designability, rapid production, high degree of mechanization

5. There is no problem of human body scald and fire

6. It is convenient for the design and control of control cabinet

shortcoming

1. High impulse current

2. Heating temperature is high, can reach about 600 degrees

3. The measurement of power has high requirements for environment

4. The thermal inertia of temperature is high

5. The production cost is higher than that of electric heating tube

6. The degree of mechanization is not high, and the production is limited.