zulkarnain bin sabari

LANGUAGE AND COMMUNICATION

PRESENTER : ZULKARNAIN BIN SABARI

GROUP : DIP 1 MARINE “B”SESSION : 2012-2014

CONTENT•TOPIC•PURPOSE•TYPES•DEFINITION•OPERATION•BENEFITS•CONCLUSION

LETS GET START!!

FRESH WATERCOOLING SYSTEM

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Designed to work with maximum efficiency and run

for long running hours

Loss of energy from machineries in form of Heat

Energy

Heat has to be reduced to avoid malfunctioning

TYPES OF COOLING SYSTEM

1: SEA WATER COOLING SYSTEM

2: FRESH WATER COOLING SYSTEM

VS

Most marine engines was designed to have clean

non-corrosive antifreeze coolant circulating between the engine and a heat exchanger. 

Raw (sea) water instead of air passes through the heat exchanger and absorbs the heat from the engine.

FRESH WATER COOLING SYSTEM

compressor

evaporator

condenser

90°c 25°c

30°c

25°c

-16°c

-15°c

-10°c

Used in a closed circuit to cool down the engine room machineries.

The fresh water returning from the heat exchanger after cooling the machineries is further cooled by sea water in a sea water cooler.

FRESH WATER COOLING SYSTEM

BENEFITSLONGER ENGINE LIFE

DUE TO:

No corrosion

No Scale

BENEFITS

PROPER ENGINE TEMPERATURE

 - IMPROVED FUEL ECONOMY- LESS ENGINE WEAR- NO CRANKCASE CONDENSATION- NO OIL DILUTION- NO SLUDGE

CONCLUSION

LOW MAINTENANCE COSTLESS CORROSIONHIGHER SPEED OF FLUID HENCE

BETTER HEAT EXCHANGEUSE OF CHEAPER MATERIALSCONSTANT TEMPERATURE LEVEL

MAINTAINED