Semi Welded Plate Heat Exchanger Series

Alfa Laval semi welded plate heat exchanger

• Semi-welded plate heat exchangers are suitable for refrigeration, chemical processes and various kinds of industrial utility duties.
• The unique Alfa Laval RefTight™ sealing system guarantees a long lifetime sealing between the welded channels because the laser weld is on the outside of the ring gasket groove. The smooth surface ensures a tight uniform seal over the entire gasket ring.
• The Alfa Laval industrial semi-welded line offers a high-efficiency solution with a sealing function combining gaskets and welds. These units can also withstand a higher design pressure compared to fully gasketed plate-and-frame heat exchangers.
• The robust Alfa Laval T10-EW, semi-welded plate industrial heat exchanger with the RefTight™ sealing system offers a higher standard of efficiency and durability to meet higher pressure demands.
• You can order the Alfa Laval Industrial semi-welded line for various temperature programs, pressure drop limitations, media and operating pressures.
• The various sizes in the product line cover a full range of heat transfer capacities and flows. All are carefully designed and selected to achieve optimal performance.

Semi welded heat exchanger contruction

• A plate heat exchanger consists of a pack of corrugated metal plates. Each plate is fitted with a rubber gasket, which seals the channel formed between two adjacent plates.
• In an alternative design, every second gasket is replaced by a laser-weld to allow for fluids aggressive to the gaskets. The plate pack is assembled between a fixed frame plate and a movable pressure plate and compressed by tightening bolts.
• The frame plate and the pressure plate are suspended from an upper carrying bar and guided by a lower guiding bar, both of which are fixed to a support column.
• The size of the unit and the material and number of plates are determined by the requirements of the particular application and duty.
• Each individual plate heat exchanger is optimised for its duty and, as a result, the usage of materials is kept to a minimum.

Key features

• Efficiency
  • CurveFlow™ distribution area: Improves media flow and minimizes the risk of fouling
  • Offset gasket groove: Ensures plate utilization for maximum heat transfer efficiency
  • OmegaPort™: Noncircular port holes Enhances media flow and thermal efficiency
  • FlexFlow™ plate design: Improves thermal efficiency and optimizes pressure drop utilization
• Reliability
  • Five-point alignment: Ensures reliable plate positioning and easy service of large units
  • PowerArc™ plate pattern divider: Improves plate rigidity for longer lifetime
  • SteerLock™ plate alignment: Ensures reliable plate positioning and easy service
  • RefTight™ sealing system: High-performance gasket sealing for high-pressure duties
• Serviceability
  • ClipGrip™ gasket attachment: Ensures perfect seal and trouble-free maintenance
  • Bearing boxes: Guarantees an easy-to-open unit for smoother, more efficient maintenance
  • T-bar roller: Provides a lower unit that is easy to service
  • Compact frame: Facilitates maintenance and minimizes service area requirement

Benefits

• Low operating cost possible owing to superior energy efficiency and prolonged service intervals
• Safe and reliable sealing with no risk of cross-contamination
• High heat transfer
  • Always turbulent flow
  • Good flow distribution
  • High COP factor achievable
• Compact
  • Low refrigerant filling
  • Low environmental impact
  • Low weight & space
• High Resistance
  • Pressure and temperature fatigue resistance
  • Freezing causes no damage
  • Corrosion-resistant plate material
• Flexible design
  • Add/remove cassettes
  • Openable for cleaning

Application areas

• Flooded evaporators
• DX evaporators
• Cascade systems
• Liquid-cooled condensers
• Desuperheater/gas coolers (for e.g. heat recovery)
• Economizers/subcoolers
• Oil coolers

Contact us

• We have the right heat exchanger for you. Fill out the contact us form to contact us today.