engine & transport integrated cooling systems. © alfa lavalslide 2 alfa laval integrated...
TRANSCRIPT
Engine & Transport
Integrated Cooling Systems
www.alfalaval.com© Alfa Laval Slide 2
Alfa Laval Integrated Cooling Systems, ALICS
• Integrated marine cooling systems
– Heat exchanger
– Expansion or surge tank
– De-aeration
– Thermostats
– Mounting function
– Integrated piping
www.alfalaval.com© Alfa Laval Slide 3
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
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Working Principle
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Advanced Plate Design
• Single-step pressing
• Patented distribution area design ensures better distribution
• No “dead spots” and reduced fouling
• Five-point guiding system prevents displacement
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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 glue-free gaskets
www.alfalaval.com© Alfa Laval Slide 7
Cooling with plate heat exchangers
• Multiple cooling duties
• Compact; low weight
• Low hold-up volume
• Less service space
• Easy to service
• Vibration and shock resistance
• No welds
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Cooling Circuits
• Central Cooling System
• Low temp seawater cooled heat exchanger
• All other heat exchangers fresh-water cooled, heatload captured in central, low temp cooler
• Reduced seawater piping, corrosion, fouling and maintenance; eliminate many seawater coolers
• 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
• Larger flow seawater pump
www.alfalaval.com© Alfa Laval Slide 9
Central Cooling System
Power Steering & Gear Cooler
Thermostat Bypass
Engine and Fuel Coolers
Expansion Tank
Seawater Connections
Transfer Pipe to Charge Air Cooler
HEX Outlet Pipe
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Reliable PerformanceCentral Cooling System • Limits components exposed
to seawater
• Smaller seawater pump
• Lower corrosion risk
• Freshwater cooled charge air coolers
• Lower system cost
• More reliable
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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
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Passive Deaeration
• Large horizontal tank area for improved de-aeration
• Integrated piping
• Coolant level sensor mount
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Active Deaeration
Seawater In
Jacket Water In
Seawater OutJacket Water Out
DeaeratorsInternal Piping
Expansion Tank
Drain & System Fill
www.alfalaval.com© Alfa Laval Slide 14
ALICS with thermostatThermostat
Housing
Thermostat Bypass
Engine Inlet
Engine Outlet Seawater
InSeawater
Out
Level Sensor
Expansion TankDrain
System Fill
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Working together
• Technical resource
• Complete cooling systems
• Key account
• Project management
• Design specifications
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Plate Range
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Alfa Laval Integrated Cooling Systems, ALICS• Varying scope of supply
Loose plates
Simple ALICS
Integrated ALICS