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Finned Tubular Heater

Short Description:

In applications where Finned Tubular Electric Heaters are exposed to forced convection, placing fins around tubular heaters increases their surface area and thus improves their heat transferring capacity.


  • FOB Price: US $10- 50 / Piece
  • Min.Order Quantity: 5 Piece/Pieces
  • Supply Ability: 100000 Pieces per Month
  • Shipping: Express, ocean shipping, air shipping
  • Payment Terms: T/T, PAYPAL, WESTERN UNION
  • Production time: 7-15 days
  • Product Detail

    Product Tags

    Specification

    Item Name

    Finned Tubular Heater

    Item No.

    PM-FTH

    Voltage

    6-600 V

    Wattage

    Customized

    Max. wattage density

    50w /sq cm

    Tube diameter

    3 mm to 30 mm (customized)

    Fins diameter

    15-45 mm

    Fins thickness

    2-6 mm

    Shape

    U shape, W shape, Coil shape, double W shape, straight, etc

    Max. operating temp:

    1000°C (depending on material)

    Diameter tolerance

    +/- 0.1mm

    Length tolerance

    +/- 3% (depending on different shapes)

    Wattage tolerance

    +/- 5%

    Voltage tolerance

    +/- 5%

    Certificates

    CE, RoHs

    Packaging

    Carton box / fumigation free wooden case

    Material

    Core

    Cr20Ni80, high quality Swedish resistance wire is avalible

    Insulation

    High purity compacted magnesium Oxide

    Sheath material

    SS304 / SS316L / Incoloy 800 / Copper / SS201 with or w/o Teflon coating

    Fins

    SS304 / SS316L / Copper / SS201 / Iron

    Accessories Information

    Threads

    Customized (such as M10, M12 etc)

    Wire

    High temperature resistance wire available

    Description

    Introductions of Finned Tubular Heater

    In applications where Finned Tubular Electric Heaters are exposed to forced convection, placing fins around tubular heaters increases their surface area and thus improves their heat transferring capacity. Finned tubular heaters, compared to regular tubular heaters, run at lower surface temperatures for the same watt densities when placed in identical air streams. Graph 1 compares watt density, outlet air temperature, and the speed of air flow for regular and finned tubular heaters respectively. Despite their advantages, finned tubular heaters are not recommended for applications where outlet air temperatures exceed 600°F.
     
    The physical characteristics of Finned Tubular Electric Heaters play a major role in the effectiveness of its heat transfer. The table below specifies the outside diameter of fins, their thickness, the spacing between consecutive fins, as well as the element sheath and fin material.

    The feature of Finned Tubular Heater

    1. Easy to install, control and maintain.

    2. Wide applications ( any tanks, drums or vessels with liquid or gases)

    3. Heating fast and efficiently

    4. Health and Safety

    5. Could be used in very high temperature, strong corrosive medium

    The applications of Finned Tubular Heater

    1. Duct Heater

    2. Load Bank

    3. Air condition systems

    4. Ovens

    5. Burn Ovens

    6. Forced air duct heating

    RFQ

    1. Diameter of heating tube and diameter of the finnes

    2. Length or width

    3. Shapes or drawings

    4. Voltage & wattage

    5. Quantity

    Reference information may help for your choice

    Tab1 : list various sheath materials, maximum allowable temperatures and mediums within which they are recommended to operate.

    Tab2 : list recommended maximum watt densities and medium for different materials.

    Tab1

       

    Sheath Material

    Maximum Sheath Temperature

    Applications

    Copper

    350 °F (170 °C)

    Immersion into water ,non corrosive low viscosity liquids

    Steel

    750 °F (400 °C)

    Oil, wax, asphalt, cast in aluminum or iron

    Stainless Steel 304-316

    1200 °F (600 °C)

    Corrosive liquids, food industry, sterilizers

    Incoloy

    1500 °F (815 °C)

    Air, corrosive liquids, clamped to surfaces

    Tab2

       

    Sheath Material

    Maximum Watts/cm2

    Medium

    Copper

    7 W/cm2

    Water, weak acid liquid

    Copper

    2.5 W/cm2

    Food oil, lubricating oil, hydraulic oil

    Stainless Steel 304-316

    11 W/cm2

    Water, weak acid liquid

    Stainless Steel 304-316

    2.5 W/cm2

    Food oil, lubricating oil, hydraulic oil

    Stainless Steel 304-316

    5 W/cm2

    Still air

    Stainless Steel 304-316

    5.5 W/cm2

    Flow rate is not low 6m/s air

    Stainless Steel 304-316

    13 W/cm2

    cast in aluminum or iron

    Incoloy

    10 W/cm2

    Still air

    Incoloy

    11 W/cm2

    Flow rate is not low 6m/s air


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