By H D MCGEORGE
The 7th variation of this vintage marine textbook is now to be had for the 1st time in paperback. This hugely revered ebook instructs either scholars and sea-going engineers within the operation, care and upkeep of the auxiliary equipment and equipment on board send and is key interpreting for marine engineers getting ready for British certificate of Competency examinations, US Licenses and comparable skills somewhere else. Designed for ease of use, the unique therapy and useful orientation of the subject material is gifted in a truly obtainable demeanour. The inclusion of feedback for extra studying on the finish of every bankruptcy is of specific use to scholars and all these drawn to any comparable titles. along this, there's additionally adequate theoretical heritage to let the reader to totally comprehend the rules concerned. those quite a few beneficial properties enable the e-book to additionally function an invaluable reference paintings for engineers within the shipbuilding and gear production industries, in addition to all sea-going engineers.
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Extra info for Marine Auxiliary Machinery, Seventh Edition
17). More recent designs have the difrusers arranged externally and the vapour condenser shell is somewhat lighter in construction. Horizontal and vertical arrangements can be found and some units are arranged as combined air ejectors and gland steam condensers. 18. The unit comprises a stack of U-tubes contained in a fabricated mild steel condenser shell on which is mounted a single element two stage air ejector. The condensate from the main or auxiliary condenser is used as the cooling medium, the condensate circulating through the tubes whilst the air and vapour passes through the shell.
Any solids mixed with oil and water emulsions can conspire to block small orifices. Clean and dry control air is thus essential for the trouble free operation of systems. Air leaving a conventional compressor usually contains oil carried over from the cylinder and water precipitated in the coolers. The two liquids combine to form an emulsion as witnessed when testing the drains. Dust and other small particles are carried through the compressor with the air, because the suction filters are necessarily fairly coarse.
Careful maintenance of air start valves, distributors and other parts is vital as is regular cleaning of air start system components to remove deposits. 1 Starting air system for main diesels components is limited as excess lubrication could cause the air start valves to be stuck by grease which has become hardened by the heat, and oil could accumulate in the pipes from this source. The draining of compressor coolers and air receivers is important. Drains on air start systems are also checked. * Starting air for auxiliary engines may be taken directly from the main engine air start receivers or from a small auxiliary receiver which can be kept at full pressure.