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 TM 55-1925-273-10-1
0018 00
KEEL, RADIATOR, AND HEAT EXCHANGER COOLING SYSTEMS OPERATIONS
MAIN ENGINE AND SSDG KEEL COOLED SYSTEMS
The coolant is circulated through the closed-loop cooling system by an engine-driven water pump (figure 1, item 6). As the
coolant circulates through the engine, it absorbs heat from the engine's cylinder block (figure 1, item 3), cylinder heads
(figure 1, item 4), exhaust manifold surfaces, engine oil, and from the marine transmission oil. After circulating through the
engine, the coolant passes through the keel cooler (figure 1, item 5) that is longitudinally recessed in the hull. As the coolant
circulates through the keel cooler, the heat absorbed from the engine is transferred to the raw water outside the hull. After
the coolant has passed through the keel cooler, it reenters the engine through the water pump (figure 1, item 6) to begin the
cooling cycle again.
EDG ENGINE RADIATOR COOLED SYSTEMS OPERATIONS
The coolant is circulated through the closed-loop cooling system by an engine-driven water pump (figure 2, item 4). As the
coolant circulates through the engine, it absorbs heat from the engine's cylinder block (figure 2, item 5), cylinder head
(figure 2, item 6), exhaust manifold surfaces, and engine oil. After circulating through the engine, the coolant passes through
the radiator (figure 2, item 1). As the coolant circulates through the radiator, the heat absorbed from the engine is transferred
to the air circulating through the radiator fins. After the coolant passes through the radiator, it reenters the engine through the
engine-driven water pump to begin the cooling cycle again.
BOW THRUSTER AND THE PUMP DRIVE ENGINES HEAT EXCHANGER SYSTEMS OPERATIONS
The coolant is circulated through the closed-loop cooling system by an engine-driven water pump (figure 3, item 2). As the
coolant circulates through the engine, it absorbs heat from the engine's cylinder block (figure 3, item 3), cylinder head
(figure 3, item 4), exhaust manifold surfaces, engine oil, and the marine transmission oil. After circulating through the
engine, the coolant passes through the heat exchanger (figure 3, item 1). As the coolant circulates through the heat ex-
changer, the heat absorbed from the engine is transferred to the raw water circulating through the heat exchanger tubing.
After the coolant has passed through the heat exchanger, it reenters the engine through the engine-driven water pump to
begin the cooling cycle again.
END OF WORK PACKAGE
0018 00-5/6 blank
0018 00-5
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