Engine & Transport
Integrated Cooling Systems
Alfa Laval Integrated Cooling
Systems, ALICS
• Integrated marine cooling systems
– Heat exchanger
– Expansion or surge tank
– De-aeration
– Thermostats
– Mounting function
– Integrated piping
© Alfa Laval
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Compact, efficient heat exchangers
•
Cooling achieved by alternating hot
and cold channels of liquids
•
Channels formed by perimeter
gaskets
• AL Flex pattern mixing optimizes heat
transfer and pressure drop
•
One-quarter the size and weight of
shell & tube coolers
© Alfa Laval
Slide 3
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Working Principle
© Alfa Laval
Slide 4
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Advanced Plate Design
•
•
Single-step pressing
•
No “dead spots” and reduced
fouling
Patented distribution area
design ensures better
distribution
• Five-point guiding system
prevents displacement
© Alfa Laval
Slide 5
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Gaskets that stay sealed
• Special materials, advanced
designs
• One-piece moulded gaskets
• Protective gasket groove
• Separate fastening and
sealing
•
•
•
No interleakage
Long gasket lifetimes
Changed in the field
© Alfa Laval
Alfa Laval glue-free gaskets
Slide 6
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Cooling with plate heat exchangers
•
•
•
•
•
•
Multiple cooling duties
•
No welds
Compact; low weight
Low hold-up volume
Less service space
Easy to service
Vibration and shock
resistance
© Alfa Laval
Slide 7
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Cooling Circuits
© Alfa Laval
•
Seawater Cooling System
•
Seawater passes through all heat
exchangers in parallel or series
•
All heat exchangers required to be
resistant to seawater
•
•
Extensive seawater piping
•
•
Central Cooling System
•
All other heat exchangers freshwater cooled, heatload captured in
central, low temp cooler
•
Reduced seawater piping,
corrosion, fouling and maintenance;
eliminate many seawater coolers
Slide 8
Larger flow seawater pump
Low temp seawater cooled heat
exchanger
www.alfalaval.com
Central Cooling System
Expansion Tank
Engine and Fuel Coolers
HEX Outlet Pipe
Thermostat Bypass
Power Steering &
Gear Cooler
Transfer Pipe to
Charge Air Cooler
Seawater
Connections
© Alfa Laval
Slide 9
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Reliable Performance
Central Cooling System
• Limits components exposed
to seawater
• Smaller seawater pump
• Lower corrosion risk
• Freshwater cooled charge
air coolers
• Lower system cost
• More reliable
© Alfa Laval
Slide 10
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Expansion Tank, multi function
• Permits expansion of coolant during engine operation
• Holds needed excess coolant
• De-aerates coolant
– Passive design provides extra volume for air to separate
and rise to top of tank
– Active design uses cyclone to force air from the coolant
• Designed in integral piping, mounting, etc., providing cost,
weight and space savings and an overall neater engine design
© Alfa Laval
Slide 11
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Passive Deaeration
• Large horizontal tank area
for improved de-aeration
• Integrated piping
• Coolant level sensor mount
© Alfa Laval
Slide 12
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Active Deaeration
Jacket Water In
Internal Piping
Seawater In
Deaerators
Expansion
Tank
Seawater Out
Drain &
System Fill
© Alfa Laval
Jacket Water
Out
Slide 13
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ALICS with thermostat
Thermostat
Housing
Thermostat
Bypass
Drain
Expansion
Tank
Level
Sensor
Engine
Inlet
Seawater
Out
© Alfa Laval
System
Fill
Engine
Outlet
Seawater
In
Slide 14
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Working together
• Technical resource
• Complete cooling systems
• Key account
• Project management
• Design specifications
© Alfa Laval
Slide 15
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Plate Range
© Alfa Laval
Slide 16
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Alfa Laval Integrated Cooling
Systems, ALICS
• Varying scope of supply
Integrated
ALICS
Simple ALICS
Loose
© Alfa Laval plates
Slide 17
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