Alfa Laval - U-Turn

U-Turn

U-Turn is a liquid separator especially designed for use with plate heat exchangers in ammonia applications. The module – including the separator and plate heat exchanger ensures minimum pressure drop losses and maximum energy efficiency.

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Alfa Laval U-Turn is designed to utilize the very best from Alfa Laval’s plate heat exchanger technology. Installed above, the self-contained U-Turn can be easily mounted onto the compatible plate heat exchanger. It can cover ammonia capacities from 200 to 4,000 kW.

The module provides an effective and compact installation with less vertical rise and smaller overall dimensions than any other solution.

Main design features

 

  • Compact dimensions
  • Shorter height and length allowing installation onsite without dismantling
  • No additional support is needed, as the U-Turn separator is supported entirely by the plate heat exchanger
  • Easy maintenance, as both sides of the plate heat exchanger are fully accessible.
  • All ammonia connections access the same side which makes installation easy
  • Integrated oil drain
  • Stainless steel ensuring corrosion resistance and no need of surface treatment

How it works

U-turn – a module for ammonia applications

The module -- including a separator and plate heat exchanger ensures minimum pressure drop losses and maximum energy efficiency. Watch this 3 min video to learn more.

  • It ensures efficient separation – due to the use of four different
    separation methods.
  • The short vertical ammonia driving columns, allowing small
    temperature approaches and high system efficiency.
  • Sliding support allows thermal expansion, ensuring no
    thermal tensions build up.
  • Significant oil pot volume in standard execution enough
    for manual drain
  • Separation based on droplet size 0.15 mm
  • Margin for separation is 25% plus one nominal diameter
  • Maximum separation gas velocity is restricted to 60% of
    the re-entrainment velocity, avoiding liquid brought back
    to the gas flow.
  • Extra safety margin from 180° U-bend.

    Ready to install

    The U-Turn module is delivered within short time, due to standardization. It is a fully functional module from one supplier and carries the CE-stamp, as well the approval from PED (Pressure Equipment Directive).