The Steam Injector
A theoretical and practical treatise on the design and operation of injectors and on the flow of fluids through and the design of nozzles.
Forfatter: V. A. B. Hughes
År: 1912
Forlag: The Technical Publishing Company Limited
Sted: London
Sider: 145
UDK: 621.176
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36
THE STEAM INJECTOK.
It will be noted that tbe increase in diameter of the
nozzle is at a fairly uniform rate up to section 5 and then
becomes more rapid, reaching the maximum at the exit
of the nozzle. The pressure curve rises very abruptly
right from the throat or inlet end of the nozzle.
Fig. 18.
It has been suggested that the correct form of delivery
nozzle is one< in which pressure energy is produced at a
uniform rate; that is, the difference between the pressures
at any two equidistant sections of the nozzle is the same.
The diagram, fig. 18, shows a nozzle designed to give this
result, the upper portion oi the diagram giving the pres-
sure and corresponding velocity curves for such nozzle.
The fina] pressure is taken as 200 Ibs per square inch and