Fresh water generator: fresh water generators act as a cooling component in the jacket water system. it uses the waste heat for producing distilled water. valve controller. which will control the three way valve according to the jacket water engine outlet temperature. if the temperature at outlet is less than the desired value valve controller. The main purpose of this section is to give all operation personnel a basic understanding of :• the engine most essential functions.• how the jacket cooling.
This makes the cooling water system design more flexible. a cooling water temperature of approximately 80°c (176°f) and cooling water pressure of 3 bar ( 44 psi) is standard for most engines operating under load. cooling water is sometimes referred to as ' jacket water ' due to the 'jacket' of water surrounding the combustion space. The h.t water temperature is maintained by low temperature fresh water and the system normally comprises of the jacket water system of the main engine, fw generator, dg during standby condition, lube oil filter for stuffing box drain tank. the ht cooling water system is circulated by electrical cooling water pumps, one in service and one on. 6.1 engine cooling. approximately 25 to 30 percent of the total heat input to the engine supplied by the fuel is absorbed by the engine cooling system. most diesel engines use a closed loop jacket type cooling system. coolant flows through the engine absorbing heat from the cylinder liners, cylinder heads, and other engine components. A water cooling system for a slow speed diesel engine is shown in figure . it is divided into two separate systems: one for cooling the cylinder jackets, cylinder heads and turbo blowers; the other for piston cooling.
Comments are closed.