All About Engines
Forfatter: Edward Cressy
År: 1918
Forlag: Cassell and Company, LTD
Sted: London, New York, Toronto and Melbourne
Sider: 352
UDK: 621 1
With a coloured Frontispiece, and 182 halftone Illustrations and Diagrams.
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Engines for Ships
285
As the only cooling water available is salt, jet
condensers are inadmissible, and surface condensers
are used. The surface condensers do not differ
greatly from those used on land except that as space
Fig. 159.—Diagrammatic section of Weir “Dual” air pump, cooler,
and connections
is valuable the smallest and most efficient form must
be adopted. The air pump, again, need differ in no
important respect from that employed in land stations,
and it may be driven by means of levers from the
main engines or have its own separate steam cylinder.
For the highest possible vacua Messrs. Weir and Co.,