Water Heater Tank Durability Tests
Water heater tanks, as devices that provide domestic hot water, must be hygienic and meet certain standards. Testing the corrosion processes of surfaces in contact with water is quite important.
The most important of these tests are the citric acid resistance test, boiling water, and steam resistance test.
Citric Acid Resistance Test in Water Heater Tanks
According to European Standards, water heater tank tests use a 10% citric acid solution. The citric acid solution is applied to the enamel surface for fifteen minutes, and acid resistance is determined based on the deformation it causes on the enamel.
MIT Water Heater Tanks' citric acid test is conducted according to ISO 2722 standards. In MIT Water Heater Tank enamel tests, the citric acid solution is applied to the surface for an extended period of 20 minutes. All MIT Water Heater Tanks are produced to achieve the highest possible level, which is the AA grade, according to this test result.
Boiling Water and Steam Resistance Test in Water Heater Tanks
The test piece is subjected to a boiling water and steam test for 48 hours. After this process, the amount of enamel on the test piece decreases slightly. According to European Standards, the highest acceptable amount is 3.5gr/m². In MIT Water Heater Tank products, this amount is only 2gr/m².
Water Heater Tank Sheet Quality
MIT Water Heater Tanks use Ereğli TRKK 6222 hot-rolled low carbon steel suitable for cold forming. This steel is resistant to aging, prone to welding, has deep drawability features, and is suitable for enamel coating used with single/double layer or single/double firing. Additionally, S355J2 (ST 52-3) steel is used in dip galvanized accumulator tanks.
Water Heater Tank System Information
Water heater tanks are used to efficiently, economically, and effectively meet the domestic hot water needs in buildings, while also providing storage. Below are answers to the most frequently asked questions about water heater tank systems, which are among the most commonly used installation equipment.
Where Are Water Heater Tanks Used?
Water heater tanks are generally used in central hot water preparation systems in places where people live collectively. They are used in places with a high demand for hot water at the same time, such as factories, barracks, hotels, dormitories, apartment buildings, hospitals, construction sites.
How Are Water Heater Tanks Used With Installation Equipment?
Water heater tanks typically use hot water provided from boilers or cascade systems as the heating fluid. Circulation is provided through a pump, creating a closed circuit. There are thermostat inputs on the water heater tank for temperature control. Pump control cuts the flow according to the measured values from these inputs. Maximum heating efficiency is achieved by adjusting the inlet temperature and pump speed according to the targeted heating duration.
Why Is Enamel Important in Water Heater Tanks?
The interior of water heater tanks is coated with titanium enamel to ensure hygiene. The enamel used in water heater tanks should consist of boron and silicon and should not contain heavy metals. It should be produced in accordance with European Standards, taking RoHS values into account.
Why Should a Magnesium Anode Rod Be Used?
Enamel and galvanized coated water heater tanks should be protected against corrosion with a magnesium anode rod. The magnesium anode dissolves with the help of electrolysis in the tank, adheres to the points where the enamel coating needs it, and extends the tank's life. It is important that magnesium anode rods used in water heater tanks are composed of components in accordance with European Standards.
How Should Water Heater Tank Durability Tests Be Conducted?
Testing the corrosion processes of surfaces in contact with water in water heater tanks is quite important. Water heater tank tests according to European Standards use a 10% citric acid solution. The citric acid solution is applied to the enamel surface for 15 minutes, and acid resistance is determined based on the deformation it causes on the enamel.
What Is the Citric Acid Resistance Test in Water Heater Tanks?
The citric acid test is conducted according to ISO 2722 standards. In water heater tank enamel tests, the citric acid solution is applied for 20 minutes. MIT Water Heater Tanks are at the highest level, AA grade, according to this test result.
What Should the Steel Quality of Water Heater Tanks Be Like?
MIT Water Heater Tanks use Ereğli TRKK 6222 hot rolled steel sheet suitable for cold forming with low carbon content. This steel is resistant to aging, prone to welding, has deep drawability properties, and is suitable for enamel coating applied in single/double layer or single/double firing. Additionally, S355J2 (ST 52-3) steel is used in dip galvanized accumulator tanks.
How is the Boiling Water and Steam Resistance Test Conducted for Water Heater Tanks?
The test piece is subjected to a boiling water and steam test for 48 hours. At the end of this process, the enamel on the test piece slightly decreases. The highest acceptable amount according to European standards is 3.5g/m². In MIT Water Heater Tank products, this amount is only 2g/m².
How is a Water Heater Tank Selected?
The most important criterion in selecting a water heater tank is the area of use. Water heater tank selection should be made by mechanical engineers based on specific criteria. The selection is made according to the conditions of the Chamber of Mechanical Engineers, considering the hot water needs of communal living areas. The calculated data are based on the hourly required water amount and all water usage sources (taps) being considered open for 1 hour. In short, the water heater tank selection should be made based on the hourly production value and the co-use factor.
What are the Advantages of Water Heater Tanks?
Water heater tanks can retain hot water inside for a very long time when not in use. The advanced technology insulation materials used provide high efficiency while protecting the water heater tank from external factors. In water heater tanks, coils should be designed not to create cold areas. Instant Water Heater Tanks prevent the formation of cold areas through their special coil designs and do not allow the bacteria that cause Legionnaires' disease to live. The titanium enamel coating also prevents bacteria growth and corrosion.