1.What is ptc heater?
ptc heater is a positive temperature coefficient thermistor. It is a ceramic heating element. Characterized by a certain operating temperature range, its resistance value increases sharply with the increase of temperature, and can be stabilized in a certain operating temperature range.
2. Advantages of ptc fan heater
The ptc fan heater is extremely safe because when the working temperature of the ptc heater reaches Curie point, its resistance value increases sharply with the temperature rising, forcing the output power to drop rapidly. When the fan stops running and there is no air-dry burning, the maximum temperature of the internal parts of the machine is limited to (specific) 240 C, which effectively avoids the problem. This is the most outstanding feature of other electric heaters.
The energy saving effect of ptc fan heater is very significant. This is because the output power of ptc heater decreases significantly with the increase of ambient temperature. The output power of ptc heater decreases about 1800W at 20 C when the air flow is unchanged at 2.1m3/min. When the ambient temperature rises to +20 C, the output power of ptc heater decreases to about 1500W with an average increase of 1 C, and the output power decreases about 7W. This characteristic plays a role of automatic power regulation to a certain extent, it can also be understood that the lower the room temperature, the greater the output power of ptc heater, the faster the heating; conversely, with the increase of room temperature, the output power of ptc heater gradually decreases, the slower the heating rate.
Power is also a notable feature of ptc fan heater. ptc fan heater uses forced convection to heat the room temperature, because the coefficient of heat transfer of forced convection air is many times that of natural convection, so the heat transfer area needed to transfer the same heat is much smaller, so ptc fan heater can be made compact and portable, its volume and weight can be as small as the same power electrothermal cement. About 1/5, which is very suitable for hanging walls.