Finned Tubular Heaters are made up of high quality stainless steel tubes, modified oxidized magnesium powder, high resistance electric alloy wire and stainless steel cooling fins. They are produced with advanced equipment and experienced technology, and tested under a strict quality management. The series of products can be installed in the air dryer or other static and flowing air heating occasions.
Finned tubular heaters are standard tubular heaters wrapped around cooling fins on the surface. Compared with standard tubular heaters, its cooling area is 2-3 times bigger. It means that finned tubular heaters have 2-3 times higher power density than standard tubular heaters. Because the length of the element is shortened, the heat loss itself is reduced. Under same power, it will have faster heating speed, more even heating area, better cooling performance, higher thermal efficiency and longer use lifetime. We can make reasonable designs according to customers' different requirements, so that it will be easy to install.
Production Process of Finned Tubular Heaters:
The finned tubular heaters are wrapped around cooling fins on the outer surface of heating tube.
Usage of Finned Tubular Heaters:
It is widely used for the oven and load bank. It is normally used to heat air. They are widely used in the machinery manufacturing, automotive, textile, food, home appliances and other industries, especially in the air conditioner air curtain industry.
It has good cooling performance and high heating efficiency.
Features of Finner Tubular Heaters:
1. Heating Time
At the test voltage, it should be no more than 15 minutes for temperature to rise from the ambient temperature to the test temperature.
2. Rated Power Deviation
In the case of sufficient heating, the deviation of rated power of the element shall not exceed the following specified range:
For components rated at less than or equal to 100W: ±10%.
For components rated at greater than 100W: + 5% to -10% or 10W (whichever is greater)
3. Leakage Current
Cold leakage current and leak current after water pressure and sealing test should not exceed 0.5mA.
The thermal leakage current at the operating temperature should not exceed the calculated value in the formula, but the maximum does not exceed 5mA.
I=1/6（tT×0.00001）
I-thermal leakage current (mA)
t-hot zone (mm)
T-working temperature (℃)
When multiple components are connected in series to the power supply, the leakage current test should be carried out as a whole.
4. Insulation Resistance
The cold insulation resistance should be not less than 50MΩ when factory inspection.
After the sealed test, the insulation resistance shall not reduce after long-term storage or usage.
The thermal insulation resistance at the operating temperature shall not be less than the calculated value in the formula, but the minimum shall not be less than 1 MΩ
R=「（10-0.015T）/t」×0.001
R-thermal insulation resistance (MΩ)
t-hot zone (mm)
T-working temperature (℃)
5. Insulation Compressive Strength
The element should be maintained for 1 min under specified test conditions and test voltage, without flashover and breakdown.
6. Withstand The Ability to Power Off
The components shall be capable of undergoing a 2000 power failure test under specified test conditions without damage
7. Overload Capacity
Components shall be subjected to 30 cycles of overload test under specified test conditions and input power, without damage.
8. Heat Resistance
The element shall withstand 1000 cycles of heat resistance test under specified test conditions and test voltage, without damage.
Non-standard sizes can be customized according to your drawing or sample. If you feel interested in finned tubular heaters, please contact us.