How to judge the quality of electric heating tubes?

How to judge the quality of electric heating tubes?

Firstly, we need to know the basic characteristics of some good electric heating tubes, and summarize them into two aspects:

1. The electrical performance of the electric heating tube operates normally

After being powered on, the carbon fiber quartz electric heating tube stabilizes its power within a certain tolerance range during frequent startup, shutdown, and long-term continuous operation, without generating any instantaneous power shock.

2. The high heat conversion rate is the most crucial aspect of electric heating tubes.

High thermal efficiency, more than 30% energy saving compared to general metal heating materials, and extremely fast heating speed. Carbon fiber heating materials are pure blackbody materials, which have the characteristics of rapid heating, small thermal hysteresis, uniform heating, long heat radiation transmission distance, and fast heat exchange speed. During the working process, the luminous flux is much smaller than that of the metal heating element's electric heating tube, with an electric heating conversion efficiency of over 95% (that is, if you use a 1000W ordinary electric heating tube, you only need 700W when using a carbon fiber electric heating tube).

How to judge the quality of an electric heating tube? In fact, the most intuitive way to verify the quality of an electric heating tube is to first wipe off the surface of the tube, then connect an AC 220V power supply, dry burn it in air, turn off the power after the surface turns red, and wait for the tube to completely cool down. Wipe it with a napkin, and there should be no black oxide powder (not reacting with oxygen in the air) on the white paper, indicating that it is a high-quality electric heating tube. On the contrary, it is considered inferior.

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