Tubular Heaters

Tubular / manifold Heaters

A designed helical coil of Nickel-Chromium alloy resistance wire with the ration of 80%-20% is welded to nickel-coated steel terminated cold pin. Once this coil assembly is stretched and centered in the element sheath, then the coil is filled with MgO (Magnesium Oxide) powder. Tubular heaters are the widely used heaters in many commercial, industrial and scientific applications. The Tubular heater can be formed in any shape and cast into elements. Once the coil is filled with MgO powder, it is then compacted to permanently stabilize the coil in the center of the tube. Tubular heaters are also called electric tubular heaters.

Ultimately, a good quality of tubular heater provides excellent rapid heat transfer, dielectric strength between coil and sheath, durability with an industry resistance tolerance of -5%,+10% which reciprocate and translate to wattage resistance tolerance of -10%,+5%. Length tolerance of tubular heater is +/- 1% with available customized diameter of tolerance +/- 1%.

Watt density of tubular heaters will govern internal resistance wire temperature and sheath and is calculated with the following formula:

Watt Density (w/in2) = Element Wattage / (π × Element Dia. × Element Heated Length)

Water heating coil or the electric heating coil is used in winters everywhere to heat the water for bathing and drinking.

Following are the elements to construct tubular Heaters:

Tubular sheath material selection:

It is based on chemical composition of the gas or liquid being heated, process control and the characteristics of elements entering into solution.

1. Incoloy® 840 for maximum sheath temperature: 1600°F / 871°C (Air Heating Application)
2. Incoloy® 800 for maximum sheath temperature: 1600°F / 871°C (Air heating, immersion heating of portable water and liquid applications)
3. 316 Stainless Steel for maximum sheath temperature: 1200°F / 649°C (improve corrosion resistance used in deionized water)
4. 304 Stainless Steel for maximum sheath temperature: 1200°F / 649°C (Industrial, Medical, and Chemical Application)
5. 321 Stainless Steel for maximum sheath temperature: 1200°F / 649°C (To prevent carbide precipitation in certain medium)
6. Copper for maximum sheath temperature: 350°F / 177°C (used for clean heating water)
7. Steel for maximum sheath temperature: 750°F / 399°C (used for high to low viscosity oils, asphalt, tar, wax, molten salt, heat transfer liquid media)
8. Inconel ® 600 for maximum sheath temperature: 1800°F / 982°C
9. Incoloy® 825 for maximum sheath temperature: 1100°F / 593°C

Same like this, you need to define your sheath surface treatment material, termination style and option with mounting methods, bending formation and moisture seals in standard sizes and ratings.

For orders and inquiries of the Tubular heater, one needs to specify the following requirement to manufacture company. As well as you should know about tubular heater manufacturers and heating coil manufacturers. Some of the eaters are called ring heaters, as they have round shape.

• Shape, dimensions
• Application purpose, medium
• Tube diameter, material, unheated tube length
• Installation and fastening elements
• Electrical connection
• Voltage, power rating
• Desired quantity

Once you provide these requirements, ask for quote and order!

If you have any question or any query. Please contact us if want to know about some more about our product.

Product Details:

Minimum Order Quantity:    6 Piece
Power(Watts):                            As per requirement of application
Voltage:                                         As per requirement of application
Size:                                                As per requirement of application