72 COOLING SYSTEM
721 Sea Water Cooling
Seawater cooling only allow for Air conditioning planting cooling.
722 Fresh Water and Other Cooling Systems
All fresh water cooling and heating system to be supplied and can add the chemical to the system.
All cooling arrangements to work at sea water temperatures at 32 deg cel.
Antifouling system to be installed in box for coolers.
Dimensions of box coolers and sea chest to fulfill Makers requirements.
A Main propulsion fresh water cooling system.
Fresh water systems to be cooled in box coolers placed in sea chest. SB main engine SB sea chest and vice versa.
The main engine box cooler system will serve the complete propulsion plant, propeller plant (lub. oil and hydr. Steering) and other small coolers.
ME high and low temperature system to be separated by heat exchanger.
Fresh water high temp. cooling systems to be used for heating hot water boilers system by heat exchangers.
The main engines will be heated by a pre heater. Circulation via separate preheating pump. The preheater to be connected to the boiler system.
Fresh water expansion tanks will be installed in each main engine and provided with low level alarm.
Filling, vent and sight glass will have all necessary connections to the fresh water circulating system.
B Aux. engine cooling systems.
The fresh water cooling system is connected to box cooler, one PS and one SB.
The aux. engines to have stand by heating by electrical heaters to maintain constant temperature.
C General service fresh water cooling system
Following major equipment will be fresh water cooled by the same system as the main engine:
- Winch system
- Others as required
- Propeller plant
Pump specifications:
Type : Centrifugal, vertical
Housing : Bronze
Impeller : Al. bronze
Seals : Mechanical
Capacity : To be determined
Pressure : To be determined
EL. Motor : To be determined
The builder will install orifices in the F.W. recirculation lines as found necessary to ensure correct flow to each individual consumer.