In the manufacture of air duct heater system, welding is a very important step. Most of the system is transported by pipeline, so the connection between pipeline and pipeline, between pipeline and other parts, except bolt connection, is welded. First weld the flange to the pipe, and then connect the two pipes by bolt connection. Because the pipeline is sweet hot oil, so the temperature and pressure are relatively high, the quality of welding directly affects the quality of the whole system. It can be seen that welding process is an indispensable step in the design of heat transfer oil system.
Welding is a process of local rapid heating and cooling of air duct type electric heater. Due to the restriction of the body around the workpiece, the welding area which can not expand and contract freely will produce welding stress and even deformation in the weldment after cooling.
The air duct type electric heater is composed of body and control system. The heating element is made of stainless steel pipe as protective sleeve, high temperature resistance alloy wire, crystal magnesia powder, which is formed by compression process. The control part adopts advanced digital circuit, integrated circuit trigger, high back pressure silicon controlled rectifier, etc., which can adjust the temperature and constant temperature system to ensure the normal operation of the electric heater.
The heating of the electric heater in the air duct is too slow. If you want to take a bath, you have to wait for 1-2 hours. Moreover, the water volume is limited and it is not enough to put the bathtub. If you wash for a long time, there will be no hot water. It's a waste of energy and water for a person to take a shower. Although there is no limit on waiting time and bathing time, there is also a strong exhaust gas emission, but after all, it consumes indoor oxygen, and there is a small amount of exhaust gas and odor left at home, especially in winter, with carbon deposition, which can not be installed in the bathroom to adjust the temperature! There are only air duct electric heaters with small size, instant heating, no bath time limit, no exhaust gas emission, visible and easy temperature adjustment. However, it is not long since it came into the market, and several brands have no word-of-mouth for reference, so I am very confused. Is there any deficiency or inconvenience? What about the quality? Are there any brothers and sisters who have used it to give advice or sum up lessons?
Air duct heater is more energy-saving. Although its power is very high, it loses less energy, so it has high efficiency and power saving. The disadvantage is that the electric power is too high, and the power distribution system of some older houses is difficult to bear, which may cause trip or even burn the line. The power of the heat storage water heater is about 1000 watts, which is acceptable to the general housing distribution lines. It can be electrified to boil water first, and then cut off the power to take a bath, which is safer. However, because the hot water is stored in the water tank for heating, and the power is not very large, so the heating time is longer, the heat loss is more, and a lot of electric energy is wasted.
The air duct electric heater is not like the bucket type fool type water heater, and the bucket type power consumption is not safe. The instant water heater needs to know how to adjust the water volume to match the water heater gear or power.
