Marine air compressors are used to start large slow speed and medium-speed marine diesel engines, and therefore are an integral part of engine room on-board.Generally, there are two compressors onboard a ship ( can be more than two depending upon the requirement of the vessel.)
The two compressors fill up the air receivers, which should have total capacity such that the engine can start 12 times ahead and astern without replenishment of the receivers. This capacity is limited to 6 times if it’s a unidirectional engine.
Each of the air receivers is fitted with a relief valve, which will limit the pressure rise to 10% of the maximum design pressure of the receiver.
Related Reading:Basics of air compressor on ship
Also, the outlet of the relief valves should be outside the engine room so that it doesn’t contribute in case there is a fire near the air receiver.
Usually, air compressors onboard are capable enough to
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Marine Air Compressor Maintenance – Things You Must Know About
Marine Air Compressor Maintenance – Things You Must Know About
