الفهرس 
INTRODUCTIONOnly 14 pages are availabe for public view
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Abstract
A cooling system in an internal combustion engine is used to maintain the various engine components at temperatures conducive to long life and proper functioning. It is necessary to control the temperature of the parts, or they will become too weak to carry the stresses resulting from engine operations. The lubricating oil film on the cylinder wall can fail because of chemical changes at cylinder wall certain high temperatures. Complete loss of power may take place if some spot in the combustion space becomes sufficiently heated to ignite the charge prematurely on the compression stroke. The present report is divided into five chaptersIn chapter one the function of cooling and engine cooling systems were analyzed. Also summary of keel cooling concept as well as advantages of keel cooling were presented. There are three main type of water cooling system. They include direct cooling, indirect or heat Exchanger cooling, and keel or skin tank cooled. In keel or skin tank cooled, the engine’s own water is circulated through either pipes under the hull, or a tank built onto a metal hull, so the external water cools the engine water. Chapter two includes seawater systems. These systems includejacketwater aftercooled with heat exchanger, seawater aftercooled, separate circuit aftercooled with heat exchangers, and separate circuit aftercooled with heat exchangers with aftercoolerseawater recirculation.In addition the types of cooling systems are discussed. Cooling systems can be divided into open system and closed system. Open systems include cooling towers (without heat exchanger), spray ponds and bodies of water. Closed systems include radiators, heat exchangers and evaporative coolers. Finally, a brief review of heat exchangers is presented. Two types of heat exchangers are explained: shell and tube type heat exchanger and plate type heat exchanger. In addition, the design criteria and considerations for heat exchangers were discussed.