In a liquid-cooling system, water or other solutions flow through the water jacket around the cylinder and cylinder head to absorb the heat. The hot liquid coming out of the water jacket is cooled in the radiator, where circulated air absorbs the heat from the radiator. The cold liquid coming out of the radiator is again pumped to the water jacket for absorbing heat.
Advantages of Liquid-cooling System:
- Liquid-cooling system is efficient as compared to air-cooling system.
- Fuel consumption of liquid-cooled engines is less than that of air-cooled engines.
- Liquid-cooled engines require less frontal area.
- For water-cooled engines, the cooling system can be located conveniently anywhere on the automobile. Some vehicles have it at the rear, while in air cooled engines, it is not possible.
- Size doesn’t pose a serious concern in the water-cooled engine, while in the high-output engines, it is difficult to circulate the correct quantity of air in an air-cooled engine.
Limitations of liquid Cooled System:
- It requires pure water supply for proper functioning.
- The pump absorbs considerable power, and it reduces the output of the engine.
- In case of failure of cooling system, the engine may get a serious damage.
- Cost of the system is considerably high.
- The system requires continuous maintenance of its parts.
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