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4 Tubular Heaters

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Content

  • » 4.1 Flexible heating pipes
  • » 4.2 Tubular heaters
  • » 4.3 Screw in tubular heater
  • » 4.4 Finned heaters
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    Introduction

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    Tubular heaters are used for almost every kind of heating appliances. They are easy to form and also feature highest mechanic stability and electric properties at the same time. Even though tubular heaters are technically rather mature and universal to use, there exist various new innovative solutions for many applications. Thus flexible heating pipes (chapter 4.1) developed to be a new industry standard for the use in heating platens, welding bars and manifolds. They might be an interesting alternative for you as well.
     

    4.1 Flexible Heating Pipes

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    4.1 Flexible Heating Pipes (click to enlarge)
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    4.1 Flexible Heating Pipes (click to enlarge)
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    4.1 Square Tubular Heater (installation) (click to enlarge)
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    Square stainless steel heating pipes BASE-flex (1.4541) are a reliable industry standard for the use in heating platens and manifolds.

    In contrast to traditional tubular heaters with a round section which have to be bent by machines, square BASE-flex can be fitted into any rectangular groove by yourself. Moreover, the square shape results in a bigger heat emitting area of up to 80% compared with a corresponding round section. Finally, the easy manual mounting saves the usually high technical expenditure for casting-in / soldering / cementing of bent round tubular heaters.

    A soft version of the BASE-flex, the NICKEL-flex (2.4068) is available as special execution. Due to the soft, easy to form nickel material, the NICKEL-flex is suitable for manual mounting in round sections, too. Furthermore, Nickel has a better capability to conduct heat compared with stainless steel.
     
    Available terminals:
    Blade terminal 6,3 mm
    4.1 Blade terminal (click to enlarge)
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    4.1 Blade terminal with screw bracket (click to enlarge)
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    4.1 Blade terminal (click to enlarge)
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    Standard (from stock)
    4.1 Blade terminal (click to enlarge)
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    On request: with screw bracket
    Terminal pin
    4.1 Terminal pin (click to enlarge)
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    Standard (from stock)
    4.1 Terminal pin with porcelain holder (click to enlarge)
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    On request: with porcelain holder
    Threaded pin M3 / M4
    4.1 Threaded pin (click to enlarge)
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    Standard
    4.1 Threaded pin (click to enlarge)
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    On request: with nut and washers
    Leads
    4.1 With leads (click to enlarge)
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    On request
    4.1 With leads and protection sleeve (click to enlarge)
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    On request: with protection sleeve
     
    Selection table length/power
    Cross section 4,5x4,5 mm ± 0,05
    Ø 5,0 mm ± 0,10
    6x6 mm ± 0,05
    Ø 6,5 mm ± 0,10
    8x8 mm ± 0,05
    Ø 8,5 mm ± 0,15
    "flex"-Type BASE-flex
    (NICKEL-flex)
    BASE-flex
    (NICKEL-flex)
    BASE-flex
    (NICKEL-flex)
    min. bending radius 12 mm 15 mm 20 mm
    unheated length 25 mm ±5 30 mm ±5 40 mm ±5
      Standard Standard
    6x6 BASE-flex available from stock
    Standard
    Total length [mm] Power [W] 230 V
    250 200 - -
    300 250 - -
    350 300 550 -
    400 350 650 -
    450 400 750 -
    500 450 800 -
    550 500 900 -
    600 550 1000 -
    650 600 1100 -
    700 650 1200 -
    750 700 1300 -
    800 750 1350 -
    850 800 1450 -
    900 850 1550 2100
    950 900 1650 -
    1000 950 1750 2300
    1050 - 1850 -
    1100 - 1950 2500
    1150 - 2050 -
    1200 - 2100 2700
    1250 - 2200 -
    1300 - 2300 2900
    1350 - 2400 -
    1400 - 2500 3100
    1450 - 2600 -
    1500 - 2700 3300
    1550 - 2800 -
    1600 - - 3500
    1700 - - 3700
    1800 - - 3900
    1900 - - 4100
    2000 - - 4300
     
    CONSTRUCTIVE SPECIFICATIONS AND TOLERANCES
    Wattage + 5% - 10%
    Resistance - 5% + 10%
    Dielectric strength 1500 V
    Insulation (cold 1000 Vdc) > 10 MW
    Leakage current (cold) < 0,5 mA
    Maximum working temperature 750 °C
    Length tolerance ± 5 mm
     

    4.2 Tubular heaters round

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    ROUND TUBULAR HEATERS are manufactured in length up to 4400 mm, straight or bend according to the customers request. As standard connections faston plugs or pins (only Æ 8,5 mm) are available. Round tubular heaters are mainly used for heating airflow or liquids. For fastening, clips can be fixed or the elements can be supplied with hexagon heads as well as flanges.
     
    4.2 4.2 Tubular heaters round (click to enlarge)
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    Available dimensions
    l 6,25 mm l 6,4 mm l 7,0 mm l 8,0 mm
    l 8,5 mm l 10,0 mm l 10,2 mm l 11,0 mm
    l 12,0 mm l 16,0 mm l 21,0 mm  
     
    Available materials
    1.4306 AISI 304 L 1.4401 AISI 316 L 1.4541 AISI 321  
    1.4876 Incoloy 800 2.4858 Incoloy 825    
    Kupfer      
     
    Not each diametre/material combination possible.
     

    4.3 Screw in tubular heater

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    4.3 Screw in tubular heater (click to enlarge)
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    SCREW IN TUBULAR HEATER are the standard solution for all heating processes with liquids or gas. The heater is installed in a tank or an air channel by the G1½" screw fitting. The connection head is IP44 proofed and contains depending on the type an adjusting knob for the controller or/and the temperature fuse (with a manual reset). The tube sheath material 2.4858 is resistant to sulphite, phosphors and hydrochloride media.
     
    Type Wattage Features
    CEL 60x 2 - 9 KW without cover
    CEL 61x 2 - 9 KW with limiter
    CEL 62x 2 - 9 KW with controller
    CEL 63x 2 - 9 KW with controller and cut out
     

    4.4 Finned heaters

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    FINNED HEATERS are the ideal solution for air or gas flow heating processes. The ribs enlarge multiply the heat-emiting surface.
     
    4.4 Finned heaters (click to enlarge)
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    4.4 Finned heaters (click to enlarge)
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    4.4 Finned heaters (click to enlarge)
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    4.4 Finned heaters (click to enlarge)
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    Length A [mm] Wattage [W] Weight [kg]
    400 700 0,650
    450 800 0,740
    550 1000 0,900
    650 1200 1,060
    700 1300 1,150
    800 1500 1,310
    950 1800 1,550
    1050 2000 1,720
    1300 2500 2,130
    1550 3000 2,530
    1800 3500 2,940
    2050 4000 3,350
     
    Length A [mm] Wattage [W] Weight [kg]
    225 800 0,740
    275 1000 0,900
    325 1200 1,060
    350 1300 1,150
    400 1500 1,310
    475 1800 1,550
    525 2000 1,720
    650 2500 2,130
    775 3000 2,530
    900 3500 2,940
    1025 4000 3,350
     
    thread
    4.4 Finned heaters (thread)
    flange
    4.4 Finned heaters (flansch)

    Inquiry Form

    Unfortunately, here is no inquiry form on offer yet. However, perhaps our contact form is of help Unfortunately, here is no inquiry form on offer yet. However, perhaps our contact form is of help.
     

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    Friedrich Freek GmbH
    Sudetenstraße 9, D-58708 Menden
    Germany
    © 2008 Freek
    www.freek-heaters.com
    Tel +49 - (0) 23 73 - 95 90-0
    Fax +49 - (0) 23 73 - 95 90-30



























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