Chilled Water Piping System

TM 55-1915-200-10

(

equipped with automatic START/STOP switches

engine room) and FIGURE 1-52 (upper machinery

adjusted to turn on at 245 psi and off at 270 psi.

room).

1-10.22.21. Main Engine Cooling Water Piping

1-10.22.18. Chilled Water Piping System. The chilled

water piping system provides air conditioning by cycling

System. The main engine cooling water piping system

chilled water through the environmental control system

extracts heat from the main engines by pumping potable

blower coils. System control is maintained through a

water through the engines.

System control is

combination of flanges/valves as shown on FIGURE 1-

maintained through a combination of flanges/valves as

29.

shown on FIGURE 1-33. The main engine cooling water

piping system receives potable water from the potable

1-10.22.19. Condenser Salt Water Circulating Piping

water piping system. Potable water is drawn from the

expansion into the cooling system by centrifugal pumps,

System. The condenser salt water circulating piping

pumped through the engine and discharged through an

system cools the refrigerant gas in the environmental

external cooling system. The external cooling system

control system chiller plant.

System control is

cools the discharge water via a keel cooler. The keel

maintained through a combination of flanges/valves as

cooler is located outside the vessel hull.

shown on FIGURE 1-53. Sea water pumped through

the condenser absorbs heat to cool the refrigerant.

1-10.22.22. Ship's Service Diesel Generator Cooling

1-10.22.20. Compressed Air Piping System.

The

Water Piping System.

The ship's service diesel

compressed air piping system delivers the air pressure

generator cooling water piping system extracts heat

required for engine starting and other uses. System

from the ship's service diesel generators by pumping

control is maintained through a combination of

potable water through the generators. System control is

flanges/valves as shown on FIGURE 1-30 (engine

maintained through a combination of flanges/valves as

room) and FIGURE 1-54 (main deck and above). The

shown on FIGURE 1-55. The ship's service diesel

compressed air piping system consists of two

generator cooling water piping system receives potable

compressors that deliver compressed air to two 240

water from the potable water piping system. Potable

gallon air receivers at 270 pounds per square inch (psi).

water is drawn into the cooling system by centrifugal

This air pressure passes through a reducer to 150 psi,

pumps, pumped through the engine and discharged

through an automatic oil and water separator and then

through an external cooling system. The external

to the points of usage. In the engine room, the

cooling system cools the discharge water via a keel

compressed air is used for main engine and ship's

cooler. The keel cooler is located outside the vessel

service diesel engine starting air.

Piping of the

hull.

compresed air is routed to the bow thruster

compartment to air start the bow thruster engine.

1-10.22.23. Bow Thruster Engine Cooling Water

Compressed air is also delivered to port and starboard

Piping System. The bow thruster engine cooling water

stations on the poop deck, officer's deck, and bridge

piping system extracts heat from the bow thruster

deck and to two outlets in the engineer's workshop. It is

engine by pumping potable water through the engine.

also routed to three air stations on the main deck where

System control is maintained through a combination of

the pressure is reduced to 100 psi. Compressors are

flanges/valves as shown on

1-127