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Friday, 2 June 2017

Engine Cooling System (page 2) ; Water Cooling

ENGINE WATER COOLING SYSTEMS:

According to the method of rejection of heat absorbed by water in the cylinder jackets, there are two types of water-cooling systems:

• Open type cooling system
• Closed type cooling system

Open type Water cooling System:
There are two variations in this system- either the hot water from the water jackets is allowed to go waste or is re-circulated after cooling in spray or cooling tower.

Closed Type Water Cooling system:
In this system, hot water from the jackets is cooled in a heat exchanger and re-circulated. There are two types of heat exchangers-radiator type and water-to-water type. The radiator type is used in automotive engines and stationary installations. In this case the heat is transferred to air directly. The water-to-water system is used in marine and industrial diesel engines.
The closed system has the advantage that pure or chemically treated water can be used in the primary circuit and there is no problem of scale deposits in the water jackets.

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