Brazed Heat Exchangers

Brazed plate heat exchangers (BHE’s) are one of the most efficient ways to transfer heat. They are designed to provide unparalleled performance with the lowest life-cycle cost. Choosing brazed technology for your next heating or cooling project will bring many benefits, including savings in space, energy, and maintenance.

Installed for a wide range of duties in refrigeration applications around the world, Alfa Laval’s high-performance BHE’s offer the highest heat transfer performance with maximum reliability and cost-efficiency.

Liquid Dynamics through Alfa Laval offers a complete portfolio of BHE’s for the following applications:

  • Evaporator (dry expansion) to cool water
  • Condenser to reject or recover heat to water
  • Desuperheater for partial heat recovery to water
  • Economizer to cool the liquid refrigerant and superheat vapour refrigerant
  • Sub cooler to cool down the liquid refrigerant
  • Intermediate heat exchanger in the absorption cycle to preheat the diluted solution and to pre-cool the concentrated solution
  • NEW! Gas cooler (transitional CO2) to reject or recover heat to water.
Innovation that boots performance

Alfa Laval BHE’s feature the Equalancer system and Dualaced technology, patented innovations that ensure high heat transfer performance. There are numerous design options to choose from.

Alfa Laval R&D has developed innovative solutions for the refrigerant fluid distribution inside a BHE. These have been laboratory tested using HCFC and HFC refrigerants with excellent results.

Equalancer system “EQ”

The two-phase flow coming into the evaporators is mixed by the patented Equalancer distribution system “EQ”, which stabilises the flow and increases performance.

Using the Equalancer it is possible to obtain a double mixing of refrigerant into two successive volumes. This ensures a more balanced distribution system through all the plate channels, reducing fluctuations in the super-heating effect.

Pressed into the plate, the Equalancer system guarantees high-quality repeatability of plate design and performance.

The Equalancer system doe not have an adverse effect on the BHE operating as a condenser since the pressure drop is negligible.

Dualaced technology “DQ”

The real dual circuit patented by Alfa Laval is a solution with diagonal flow.

BHE’s using Dualaced technology have two independent refrigerant circuits. The special design ensures that each refrigerant circuit is in contact with the entire water flow. The main advantage is that at partial load (only one compressor running) water cooling is uniform and performance is maximised.

Why choose Alfa Laval Brazed plate heat exchangers?
  • Compact, durable designs with consistently high quality; ease of installation
  • Extensive range of BHE models providing cooling capacities from 0.5 to 600kW
  • Equalancer system provides a substantial saving in heat transfer surface compared to BHE’s with a traditional distribution system
  • Cost efficient: space savings due to the compact design of BHE’s compared to shell-and-tube heat exchangers
  • Rapid response to temperature changes due to small hold-up volume and lower refrigerant charge
  • Optimised design for every duty with customised BHE configuration to the customer’s own specifications
  • All widely recognised pressure vessel codes available as standard
  • Every BHE is pressure and leak tested before delivery, ensuring top quality products
  • As the Alfa Laval BHE distributor, Liquid Dynamics is always on hand to help with any operational or maintenance issue.

For more information download the brochure. 

You can also contact us to find the right BHE for your needs.

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