Gree air conditioner "QLI" series uses PTC heating tubes for electric auxiliary heating
Auxiliary heat refers to the PTC electric auxiliary heating technology of air conditioners. PTC is a semiconductor heating ceramic. When the external temperature decreases, the resistance value of PTC decreases and the heat generation increases accordingly. Based on this principle, air conditioners using PTC electric auxiliary heating technology can automatically change the amount of heat generated according to changes in room temperature and the air volume of the indoor unit, thereby appropriately adjusting the indoor temperature to achieve rapid and powerful heating. Generally speaking, cold weather seriously affects the normal performance of the cooling and heating functions of air conditioners. However, air conditioners with electric auxiliary heating function can effectively overcome this shortcoming due to the regulation and auxiliary role of electric auxiliary heat in the heat generated by the air conditioner. , very suitable for use in severe cold areas.
Advantages of auxiliary heat:
First, long service life. Since PTC is a ceramic semiconductor with a relatively stable structure, it overcomes the weakness of other electric heating elements that may cause oxidation or deterioration due to high temperature or long-term operation. Its service life is beyond the reach of other electric heating elements.
Second, air conditioning has high thermal efficiency. Since the electrothermal conversion efficiency of PTC is relatively high, generally reaching more than 99%, there is almost no energy loss, so the thermal efficiency is greatly improved.
Third, it is safer and more reliable to use. The PTC element itself has a strong temperature self-limiting ability. Even if the air conditioner fails during operation and affects the heat dissipation of the body, no accident will occur because the temperature of the PTC element itself only rises to a maximum of 20-30°C. This is different from other products such as nickel-chromium wire. The surface temperature of electric heating elements may rise to a maximum of 700-800°C, which is much safer.
Fourth, PTC electric auxiliary heating has a wide range of applications. The rated voltage of PTC is 220V, but when the power supply voltage changes between 100-240V, it will not affect the heating capacity and amount of heat generated by the PTC element at all.