Alfa Laval Plate Heat Exchangers
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Available in more than 20 models, brazed Plate Heat exchangers (BHE's) have stainless steel plates, copper brazed for high thermal efficiency and strength, Designed for refrigeration and AC duties, BHE's handle HCFC, HFC, HC and CO2 refrigerants. As dry expansion evaporator, they feature integrated flow equalization for maximum cooling performance. Three models are equipped with double refrigerant circuits. Temperature range - 100oC to 200oC; pressure in excess of 40 bar.Benefits:
Extremely compact, low weight, easy to install
Low refrigerant charge
Even flow distribution with stable superheat capability
Safe oil Scatter, even with low loads
Safe capacity control due to double refrigerant circuits
Floating condensation temperature with flooded evaporations systems
Can be optimized with air liquid coolers in indirect cooling systems.
Applications:Indirect System:
Water-glycol cooled condensers
DX evaporators, single and double circuits
Flooded evaporators
Indirect and direct System:
Cascade evaporator/condensers
Condensate coolers
Desuperheater for heat recovery
Oil coolers
Alfa Laval Fusion-bonded Plate Heat Exchanger:Available in 5 sizes and various pressure levels. AlfaNova is a completely new type of plate heat exchanger, the world's first plate heat exchanger, made of 100% stainless steel. It is based on Alfa Laval's new revolutionary techonology. AlfaFusion, the art of joining stainless steel components together. AlfaNova heat exchanger are well suited in applications which put high demand on cleanliness, applications where e.g. Ammonia or LiBr are used or application where copper or nickel contamination is not accepted AlfaNova is made for high thermal efficiency and strength as well as good resistance, pressure and thermal fatigue, Temperature range: 50oC to 22oC; pressure in excess of 25 bar.Benefits:
Same benefits as the brazed heat exchangers with some additions e.g:
100% stainless steel construction ensures unbeatable durability
High corrosion resistance
Maximum hygiene
Applications:Indirect and/or direct Systems Within Ammonia Refrigeration:
Oil cooler
Condenser
Evaporator
Economizer
Desuperheater
Absorption systems (LiBr)
Within Cooling:
Process Cooling
Hydraulic oil Cooling
Laser cooling
Hygienic/Sanitary demands
Water/Water cooling
Alfa Laval Gasketed Heat Exchangers:Designed to allow full optimization with the chiller, the Gasketed Plate Heat Exchanger (GPHE) range includes versions to cope with pure, corrosive, foulant and hygienic fluids in combination with chiller evaporators and condensers. Plate designs prevent fouling through even flow distribution, high turbulence and no stagnant areas. GPHE's are available in stainless steel, titanium and high nickel alloy materials. Operating pressure up to 25 bar, operating temperature up to 180oC; flow rates up to 3,000 m3/h.Benefits:
Compact, low weight
Efficient with close temperature approach and small loss of chiller efficiency.
Low fouling with raw water, no corrosion
Easy to open with advanced bolt closing system
Long-life, glue-free gaskets means easy on-site replacement
Fatigue resistant
No risk of inter leakage
Applications:Indirect System:
Intercoolers, isolating chiller condensers for corrosion and fouling resistance
Intercoolers in free cooling or chiller bypass systems with air coolers, cooling towers ans sea, river or lake water as heat sink
Interchangers in reversed AC/heat pump application
District cooling distribution interchangers
Pressure interceptors for tall building
Alfa Laval Semi-Welded Heat Exchangers:The Semi-Welded Plate Heat Exchanger (SWPHE) is available in six models. The refrigerant flows in laser-welded, sealed plate channels and the brine in gasketed channels. The flexible design copes with fatigue stresses and ice formation. The SWPHE handles most refrigerants on the welded side and is particularly suitable for ammonia duties. Standard plate materials are stainless steels and titanium. Temperature range - 45oC to 130oC; pressure upto 25 bar.Benefits:
Low charge, low weight
Easy to modify heat transfer area for altered capacities, refrigerants
Easy inspection and cleaning of the liquid side.
Reliable, with long service life for heavy duties
Plate materials for corrosive fluids, cooling water and brines
Condender/desuperheater or condenser/oil cooler combined in single unit
Floating condensation with flooded evaporation
Can be optimized with air liquid coolers in indirect cooling systems
Applications:Indirect systems:
Water-glycol cooled condenser
DX evaporators, single and double circuits
Flooded evaporators
Indirect and direct Systems:
Desuperheater for heat recovery
Water-cooled oil coolers
...more