Water Boiler Electric Heating Tube Custom

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Water Boiler Electric Heating Tube

An electric water heater is a device that heats water by converting electrical energy into thermal energy, and its working principle is mainly based on the principle of resistive heating. The following is a detailed introduction:

Basic Structure and Composition: An electric water heater generally consists of components such as a storage tank, electric heating elements, a temperature controller, a magnesium rod, and a safety valve. The storage tank is used to store water; the electric heating elements are the key components for converting electrical energy into thermal energy; the temperature controller is used to control the water temperature; the magnesium rod mainly plays a role in protecting the inner tank and reducing corrosion; and the safety valve ensures the safety of the water heater during use.
Resistive Heating Process: When the electric water heater is connected to the power supply, the electric current passes through the electric heating elements. Since the electric heating elements (usually made of metallic alloy materials with high resistance, such as nickel-chromium alloy) have a certain resistance to the electric current, according to Joule's law (, where  is the heat,  is the current,  is the resistance, and  is the time), the electric current does work on the resistance, and the electrical energy is converted into thermal energy, causing the temperature of the electric heating elements to rise.
Heat Transfer and Water Temperature Rise: After the temperature of the electric heating elements rises, the heat is transferred to the water in contact with them through heat conduction. As the water absorbs heat, its temperature gradually increases. Since the density of hot water is lower than that of cold water, hot water will rise and cold water will sink, forming natural convection inside the storage tank, thus gradually making the water temperature inside the tank more uniform.
The Function of the Temperature Controller: The temperature controller monitors the water temperature inside the storage tank in real time. When the water temperature reaches the preset upper temperature limit, the temperature controller will automatically cut off the power supply and stop the operation of the electric heating elements to prevent the water temperature from being too high. When the water temperature inside the storage tank drops to a certain temperature (the preset lower temperature limit) due to the use of hot water or natural heat dissipation, etc., the temperature controller will automatically connect the power supply again, making the electric heating elements work again to heat the water to the preset temperature.
Working Principle of Dual Heating Elements (for Some Electric Water Heaters): Some electric water heaters are equipped with upper and lower electric heating elements. In the initial stage of use, the upper electric heating element works first, giving priority to heating the water in the upper part of the storage tank to meet the user's need for quickly obtaining hot water. When the water temperature in the upper part reaches the preset temperature, the upper temperature controller will cut off the power supply of the upper electric heating element and connect the power supply of the lower electric heating element to continue heating the water in the lower part of the storage tank, so that the water temperature throughout the storage tank can reach the preset temperature, improving the heating efficiency and the utilization rate of hot water.
Protection Principle of the Magnesium Rod: During the heating process, calcium, magnesium and other ions in the water will deposit on the surface of the inner tank to form scale, and the dissolved oxygen in the water will also corrode the inner tank. The chemical properties of the magnesium rod are more active than those of the metal of the inner tank, and it will preferentially react with the dissolved oxygen and other corrosive substances in the water, thus protecting the inner tank from corrosion and extending the service life of the electric water heater.

Through the above series of working processes, the electric water heater realizes the conversion of electrical energy into thermal energy, providing users with stable hot water at an appropriate temperature.

Anatomy of Electric Heating Elements:
The electric heating elements are the main components of an electric water heater and play a crucial role in heating the water. Understanding their design and functions is key to diagnosing and resolving potential issues. These elements are usually rod-shaped and located inside the storage tank, consisting of several core components:
Metal Sheath: The outer layer of the element is a metal sheath, typically made of copper, stainless steel, or nickel alloy. This sheath encloses the heating element, providing a robust barrier against the corrosive environment inside the water tank.
Resistance Wire: Inside the sheath is the resistance wire, usually made of nickel-chromium alloy. The wire is the core of the element, where electrical energy is converted into heat energy through resistance. When an electric current passes through this wire, its natural resistance generates heat, which is then transferred to the water.
Insulation: There is an electrical insulation layer around the resistance wire, usually made of magnesium oxide. This insulation is highly effective in conducting heat but prevents electrical contact with the sheath, ensuring safety and efficiency.
Termination Points: Both ends of the heating element have termination points where electrical connections are made. These points protrude from the top of the water heater tank and are where the power supply is connected.
Thermostat and Safety Switch: Each element is regulated by a thermostat, which controls the temperature by switching the power supply to the element on and off. The safety switch (high limit switch) is integrated to prevent overheating and will cut off the power supply if the water temperature exceeds the safe limit.
Understanding these components is essential for diagnosing problems with the heating elements. Issues are usually caused by the failure of one or more of these components, such as a burned-out resistance wire or corrosion of the sheath, resulting in low heating efficiency or complete failure.

Common Issues with Electric Heating Elements:
The heating elements of electric water heaters often face several common malfunctions due to their working environment:
1.Burnout: Excessive current from unstable voltage or long-term use can cause the resistance wire in the heating element to burn out, making the water heater unable to heat and possibly tripping the circuit.
2.Insulation Damage: Erosion by water, high-temperature aging, or external damage can damage the insulation layer, leading to electric leakage and short circuits.
3.Sheath Corrosion: The metal sheath may corrode due to chemicals in water. Severe corrosion can cause perforation, bringing safety risks and affecting heating.
4.Terminal Issues: Loose or oxidized terminal connections increase resistance, causing problems like slow or intermittent heating.
5.Thermostat-related Problems: A faulty thermostat can make the heating element overheat or fail to start properly.
6.Efficiency Drop: Scale accumulation on the heating element reduces its heat transfer efficiency, slowing down water heating and wasting energy.

Product Parameter

Explosion-proof flange immersion heater specification

Specifications Power Kw Flanged Immersion Heater for Liquid Flanged Heater for Air Temperature control range Power Supply
size (mm) Us (pieces of u) size (mm) Us (pieces of u)
XTFL-5 5 DN80*500 3 DN100*600 3 RT-700 Single-phase 220v
XTFL-10 10 DN80*700 3 DN100*700 6 Three-phase380V,50HZ
XTFL-15 15 DN125*700 6 DN125*700 9
XTFL-20 20 DN150*800 6 DN150*900 9
XTFL-30 30 DN150*800 9 DN150*1000 12
XTFL-40 40 DN200*1000 12 DN200*1200 15
XTFL-50 50 DN200*1000 12 DN200*1200 15
XTFL-60 60 DN200*1200 15 DN250*1300 18
XTFL-80 80 DN250*1400 18 DN250*1500 18
XTFL-100 100 DN250*1600 18 DN300*1600 24
XTFL-120 120 DN250*1600 18 DN300*1600 27
XTFL-150 150 DN300*1600 24 DN350*1600 36
XTFL-180 180 DN300*1600 27 DN350*1800 36
XTFL-200 200 DN300*1800 27 DN400*1800 45
XTFL-240 240 DN350*1800 36 DN400*1800 54
XTFL-280 280 DN350*1800 36 DN500*1600 72
XTFL-300 300 DN400*1800 42 DN500*1600 72
XTFL-360 360 DN400*1800 45 DN500*1800 72
XTFL-400 400 DN400*1800 54 DN600*1800 84
XTFL-450 450 DN450*1800 60 DN600*1800 90
XTFL-500 500 DN500*1800 72 DN700*1800 108
XTFL-600 600 DN600*1800 84 DN800*1800 120
XTFL-700 700 DN600*1800 90 DN900*1800 144
XTFL-800 800 DN700*1800 108 DN900*1800 180
XTFL-900 900 DN800*1800 120 DN900*1800 180
XTFL-1000 1000 DN900*1800 144 DN1000*1800 216

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About sinton
Jiangsu Sinton Group Co.,Ltd.
Jiangsu Sinton Group Co.,Ltd.
Prosperity by Giving up, Peace by Virtue, Charming Sinton, Happy Sinton".Sinton Group, created at Yancheng City, Jiangsu Province. Sinton Electric Co.,Ltd. is one subcompany of Sinton group which sarted its business in 2001,We have formed a comprehensive group with energy-saving heating products as the mainstay, including import and export trade. Sinton’s production base is its subsidiary China Hopebond Eco Tech Co., Ltd., is a national high-tech enterprise. The self-built 60-mu factory is located in Tinghu Environmental Protection Industrial Park. It has a production plant of 20,000 square meters and a R&D center of 3,600 square meters. It focuses on technological innovation and brand creation. As a famous China Water Boiler Electric Heating Tube Factory and Water Boiler Electric Heating Tube Suppliers. Specializing in the production of explosion-proof and non explosion-proof heaters, air duct heaters, pipeline heaters, circulation heaters, electric drying machines, heat-conducting oil furnaces, Electromagnetic coil heater and all kinds of electric heating element, as the direct thermal energy providing element or preheater of project. The products are mainly suitable for high temperature heating environment of 50-1000℃, and are widely used in environmental protection, medical treatment, coal mining, petroleum, chemical industry, textile, plastics, heating, agriculture, animal husbandry and other fields, and to promote the development of Zero-Carbon Economy and green earth conversion.
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