How to choose a high-quality electric heating tube?
The voltage specification of the electric heating tube must be confirmed before purchasing. The confirmation of this step is equal to the fixing of the resistance value on the device. The higher the voltage, the higher the power. If the wrong selection is made, it is especially easy for the voltage to exceed the load of the electric heating tube, causing the resistance wire to fuse or even the electric heating tube to break down. Conventional voltage specifications: 24V, 36V, 48V, 110V, 220V, 380V, usually the voltage we refer to is the rated voltage.
The rated voltage of the electric heating tube refers to the voltage connected to the electric heating tube specified in the redesign and marked on the outer shell of the electric heating tube. Or in other words, the rated voltage is the voltage given by the customer when we process and produce.
When choosing the electric heating tube, it is necessary to consider the cooperation between the diameter of the tube and the aperture of the template. Because the diameter of the tube is too large, the electric heating tube cannot be installed in the hole, the outlet end is not fixed, and the electric heating tube moves. Therefore, it is necessary to consider the diameter of the tube during production. The excess space between the hole and the hole wall is reserved, which affects the heat transfer effect of the electric heating tube and the expansion of the tube after heating, which affects the service life.
The factors of the electric heating efficiency of the tube can be summarized in one sentence: that is, the cumulative size of the thermal resistance on the heat transfer path determines the electric heating efficiency of the electric heating tube. Detailed analysis of the possibility of reducing thermal resistance by various processes along the heat transfer path.