TUBULAR AIR HEATERS
Brand: Alfa Heaters, Product Code: standard, Availability: In Stock
Tubular Heating Elements
Tubular heating elements are highly versatile and efficient components designed for various industrial heating applications. Made from Nickel-Chrome wire, which is helically wound, the coil is encased in a SS 304 sheath. The space between the coil and the tube is filled with Magnesium Oxide (MgO), which enhances thermal conductivity, dielectric strength, and extends the heater’s lifespan.
Design & Construction
Coil: The Nickel-Chrome wire is wound helically to produce high heat output.
Sheath: SS 304 stainless steel is used for durability and corrosion resistance in high-temperature environments.
Insulation: Magnesium Oxide (MgO), with a specifically selected grain size, ensures efficient heat transfer and insulation.
Compression: The tube is compressed via a swaging machine, which secures the coil in the center of the tube, ensuring uniform heat distribution.
Terminals: Stainless steel screw-type terminals securely connect the coil to the power supply, with one end of the coil welded to the screw’s inner end.
Applications
These heating elements are used in a range of applications including:
Air heating (HVAC systems, blowers)
Forming machines
Immersion heating (liquids, oils, solvents)
Hot runner moulds
Ovens, dryers, and dishwashers
Sterilizing equipment
Ordering Information
When ordering, specify:
Sheath Material: SS 304, Copper, or Incoloy
Diameter: Standard sizes include 7 mm, 8 mm, or 11 mm
Wattage & Voltage
Bend Type & Dimensions
Flange Dimensions
Design Features
Resistance Tolerance: +10%, -5%
Wattage Tolerance: +5%, -10%
Max Sheath Temp: SS 304: 650°C, Incoloy: 875°C
Max Voltage: 480 V AC, Max Current: 40 Amps
Frequently Asked Questions
A tubular heating element is a type of electrical heating component that consists of a Nickel-Chrome wire coil encased in a stainless steel sheath. It is used to generate heat for various industrial applications such as air heating, immersion heating, and more.
Tubular heating elements are primarily made from Nickel-Chrome wire for the coil and SS 304 stainless steel for the sheath. The space between the coil and sheath is filled with Magnesium Oxide (MgO) for better thermal conductivity and insulation.
These elements are used in a variety of applications, including air heating, forming machines, immersion heating, hot runner moulds, ovens and dryers, dishwashers, and sterilizing equipment.
The maximum sheath temperature depends on the material:
SS 304: 650°C
Incoloy: 875°C
The maximum voltage is 480 V AC, and the maximum current is 40 Amps.
Yes, tubular heating elements can be customized for specific applications by adjusting parameters such as diameter, wattage, voltage, bend formation, flange dimensions, and more.
With proper maintenance and usage within specified limits, tubular heating elements can last for many years. The use of Magnesium Oxide insulation enhances their longevity by reducing wear and tear.
Yes, tubular heating elements are highly efficient due to their ability to generate heat quickly and maintain consistent temperatures, minimizing energy wastage.
These elements are designed with stainless steel screw-type terminals for secure electrical connections. The Magnesium Oxide insulation ensures electrical safety and thermal performance while protecting against electrical faults.
To choose the right tubular heating element, consider factors such as application type, temperature range, power requirements, and customization needs like bend formation and flange dimensions. Consult with a supplier to ensure compatibility with your system.