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    Enhanced Surface Evaporator Tubes

    Wieland’s Enhanced Surface Evaporator Tube combines advanced nucleate‑boiling technology from the GEWA‑B and GEWA‑PB families to deliver outstanding heat‑transfer performance in shell‑and‑tube heat exchangers. Its engineered boiling surface, and optional dual‑enhanced structure with inner spiral fins, significantly boosts thermal efficiency, enabling more compact designs, lower refrigerant charge, and improved energy performance in flooded and falling‑film evaporators.
    Additional information

    Material overview

    ASTM-UNS No.    		 Wieland Designation ⁠EN Designation EN No. JIS No. Data Sheet
    C12200    		 KU1 Cu-DHP CW024A - -
    C70600    		 L10 CuNi10Fe1Mn CW352H - -
    K01200    		 O41 - - - -
    Overview Product Variants Certification Typical Applications

    Enhanced surface evaporator tubes – for optimized boiling performance

     

    Our evaporator tubes feature enhanced outer and inner surfaces optimized for refrigerant boiling, delivering excellent heat transfer performance. The portfolio offers application-specific solutions for maximum efficiency, drop-in replacements, high-viscosity and fouling media, as well as demanding process industry applications.

    Key Benefits

     

    • Optimized heat transfer coefficients
    • Increased heat transfer on shell and tube side 
    • Superior overall heat transfer performance 
    • More compact heat exchanger designs
    • Reduced refrigerant charge 
    • Improved life cycle energy efficiency 
    • CAPEX and OPEX savings potential 
    • Minimizing CO₂ emissions during operation

    Product variants

     

    • B6 & B7 – for highest performance and efficiency
    • B4HSL – weight optimized, drop-in applications
    • BHV – for media with high viscosities
    • BLF / BPL – for high fouling applications

     

    Discover our design software for condensers and evaporators - ThermalX
    Click here for more information about available tube dimensions

     

    Certification

     

    • DIN EN 12452 / EN 10216-2
    • DIN 17679 and VdTÜV 420 / 5 for use in pressure vessels
    • ASTM B 359 / ASME SB-359 / ASTM A-498
    • Certification for use in pressure vessels has been obtained with AD-Merkblatt W0 / TRD 100
    • Certificates 3.1 / 3.2 according to DIN EN 10204

    Typical Applications

     

    Enhanced evaporator tubes are primarily applied in:

    • Flooded evaporators in packaged chillers
    • Falling-film evaporators in packaged chillers
    • Air-conditioning industry
    • Refrigeration industry
    • Bulk boiling of refrigerants and similar fluids

     

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