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A keel cooler is a type of internal combustion engine cooling system used in marine engines.. In this system, engine coolant is circulated through a system of tubing outside the vessel's hull, using the lower temperature of seawater to reduce the coolant temperature via heat exchange before it is recirculated through the engine. [1]
Heat generated an engine's cylinders is transferred to a jacket water cooling system through the cylinder wall. In addition to cooling the cylinder walls, jacket water is often found as an insulator between the exhaust header and the engine room.
The 2GM20 series uses either a direct seawater cooling system, or an indirect freshwater cooling system (specified by the suffix letter F i.e. 2GM20F). Seawater is pumped into the engine through a seawater pump (impeller type). In the engines equipped with a direct seawater cooling system, seawater is used to cool the internals of the engine ...
Hopper cooling is a simple form of water cooling used for small stationary engines. The defining feature of hopper cooling, amongst other water-cooled engines, is that there is no radiator . Cooling water is heated by the engine and evaporates from the surface of the hopper as steam .
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English: A schematic of a fully closed internal combustion engine cooling system for ships. 1. Cooling pipes; filled with chemical cooling substance; fully closed; cooled itself by seawater.
English: A schematic of a semi-closed internal combustion engine cooling system for ships. 1. Valve; 2. Pump; 3. Filter; 4. Cooling pipe; filled with chemical cooling substance; fully closed; cooled itself by seawater; 5. Engine IC; 6. Clutch; 7. Outlet pipe (works as water seal) Note: As visible in the drawing, coolant water and exhaust fumes ...
Internal combustion engine cooling uses either air or liquid to remove the waste heat from an internal combustion engine. For small or special purpose engines, cooling using air from the atmosphere makes for a lightweight and relatively simple system. Watercraft can use water directly from the surrounding environment to cool their engines.