Do you know how an electric water heater is heated?

Electric water heaters are becoming more and more popular in our daily life, but do you know how electric water heaters are heated?

Electric water heaters heat water by means of electrical resistance, which converts electricity into heat energy. An electric water heater has a built-in heating pipe, a heating resistor or similar device. When powered on, it quickly generates a lot of heat, which is transferred to the surrounding water. When the water temperature rises to the set temperature, the power will be automatically cut off under the control of the temperature sensing device. When the water temperature in the water storage bucket drops to 5℃ below the set value, it will automatically heat to the preset temperature and automatically cut off the power supply. Because there is water inside the heating tube of electric water heater, need to install all sorts of leakproof protection measures, in order to satisfy the bath demand of the user.

Since electric water heaters are heated by heating tubes, different electric water heaters have different heating tubes:

1. Single heating tube: the most common electric water heater on the market now, such as mechanical or digital display entry machine, generally only a heating tube, the output power of heating tube is 1500W or 2100W, the electric water heater of this kind of heating tube heating speed is slow, heating time is long.

2. Double tube heating tube: Generally medium price electric water heater has a double tube design, use according to the combination of power. For example, the 2100W electric water heater is equipped with 800W+1300W, 3200W electric water heater is equipped with 1100W and 2100W, one of the heating tube using subsea design, heating tube close to the bottom of the electric water heater, the surrounding heating range is wide, the overall uniform heating, electric water heater output rate is high. Additional, as a result of hot cold water density is different, the electric water heater that equip double add heat tube can choose to heat whole gallbladder or half gallbladder mode, some manufacturers also call change capacity heating. Double tube electric water heater can fully meet the needs of different families to hot water.

3 vortex type heating tube: mainly used in the middle and high-end electric water heater, in order to better shorten the heating time, more hot water, in the electric water heater submersible heating tube is also matched with the eddy current "energy gathering ring" heating tube, the eddy current "energy gathering ring" heating tube, can make the electric water heater submersible heating tube more energy saving.

Today, most electric water heaters are heated by metal tubes. This heating method has a low manufacturing cost, so it is widely used.