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Durable Small SS Spiral Finned Tube Finned Heating Element ASYM Standard

Categories Stainless Steel Seamless Pipe
Brand Name: TOBO
Model Number: Stainless Steel
Certification: ISO SGS
Place of Origin: CHINA
MOQ: 1PC
Payment Terms: T/T
Supply Ability: 3000 /MONTH
Delivery Time: 15 DAYS
Packaging Details: AS Requirement
Standard: ASYM
Welding line type: WELD
Material: Stainless Steel
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TOBO STEEL GROUP CHINA
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    Durable Small SS Spiral Finned Tube Finned Heating Element ASYM Standard

    stainless steel spiral fin tube heater finned heater fin heating element

    M. Nitsche, R.O. Gbadamosi, in , 2016

    Finned Tube Calculations  251

    12.3.1

    Calculation of the fin efficiency ηF 251

    12.3.2

    Calculation of the weighted fin efficiency ηW 251

    12.3.3

    Calculation of the overall for the inner tube surface area Ai without

    12.3.4

    Calculation of the overall heat transfer coefficient Uo based on the outer tube area Ao without fouling 254

    12.3.5

    Calculation of the overall heat transfer coefficient Uo based on the finned outer surface area Ao considering the fouling factors ro and ri 255

    12.3.6

    Calculation of the overall heat transfer coefficient Ui for the inner tube surface area Ai considering the fouling factors ro and ri 256

    12.3.7

    Fouling and Temperature Gradient 256

    12.3.8

    Comparison of the specific heat duties Ui × Ai (W/m K) of different tubes 258

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    AIR-COOLED HEAT EXCHANGERS

    12.2.2 High-fin tubing

    Finned tubes are almost always used in air-cooled exchangers to compensate for the low air-side. Radial (annular) fins arranged in a helical pattern along the tube are used. The fin heigh is significantly larger than that of the low-fin tubes used in Hence, this type of tubing is referred to as high-fin tubing.

    Various types of high-fin tubing are available, including:

    Integrally finned

    Medium-high finned tubes made of copper and copper alloys


    GEWA-D finned tubes made of copper and copper alloys are available in a wide range of sizes and withstand the highest mechanical and thermic stress. They are specially made for the individual geometries of complex heat exchangers. Copper offers the highest heat conductivity of all technical metals. It is superior in processing, hygienic and a corrosion resistant solution.

    Medium-high finned tubes made of aluminium


    GEWA-D finned tubes made of aluminium are specifically used in light-weight applications. Aluminium combines highest ductility with reasonable heat conductivity.

    NEW: Medium-high finned tubes made of carbon steel

    GEWA-D finned tubes made of carbon steel can be used in applications such as solid-fuel boilers or storage tanks. The significantly enlarged surface area compared to plain tubes allows compact solutions. Ready to install heat exchangers can be an interesting alternative solution for heat exchangers made of costly materials.

    NEW: Medium-high finned tubes made of stainless steel

    GEWA-D medium-high finned tubes made of stainless steel can be used for condensing boilers or domestic hot water applications. Due to the enlarged outside heat transfer surface area the required tube length can be reduced and thus costly material can be saved.


    Table 12.1. Characteristics of Typical High-Fin Tube Arrays

    Root tube OD (in.)1.01.0
    Fin height (in.)0.5000.625
    Fin OD (in.)2.002.25
    Average fin height (in.)
     Tension wound or embedded0.012–0.0140.012–0.014
     Bimetallic or integral*0.015–0.0250.015–0.025
    Fins per inch910
    Tube layout angle30°30°
    Tube pitch (in.)2.252.50
    ATot/L3.805.58
    ATot/Ao14.521.4
    ATot/Ai
     13 BWG17.926.3
     14 BWG17.425.6
     16 BWG16.724.5
    External surface area per unit bundle face area
     Three tube rows60.680.4
     Four tube rows80.8107.2
     Five tube rows101.0134.0
     Six tube rows121.2160.8

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