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.
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 1400 kW at 0°C evaporation temperature and from 50 to 500 kW at -40°C evaporation temperature.
The module provides an effective and compact installation with less vertical?rise and smaller overall dimensions than any other solution.
Main?design features
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- 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
Ready to install
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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).
运行原理
- 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).