A Practical Manual On Sea Water Distillation
With A Description Of The Necessary Machinery For The Process
Forfatter: Frank Normandy
År: 1909
Forlag: Charles Griffen & Co., LTD.
Sted: London
Sider: 244
UDK: 663.6
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APPENDICES.
229
(Appendix to page 113.)
The feed, evaporation, and brine all hang together very
closely; the distilled water being evaporated from the
feed and the brine being what is afterwards left. Both
the distilled water and the brine, therefore, offer them-
selves as agents for regulating the feed as to its quantity.
Fig. 12 shows how the output of distilled water may be
applied to this use. It has the following points which
make it preferable to using brine for this purpose,
viz.:—It is cold, or cooler than the brine, and it is also
fresh, and therefore free from a disposition to cause
incrustation on the float and other parts with which it
comes into contact. If it becomes difficult to pass the
distilled water into the feed regulator the brine has to be
used, and, if due provision is made for the heat and
impurity of the brine, a regulator somewhat on the same
lines as shown in Fig. 12 can be adapted to the use of
brine instead of the distilled water.
When, however, the brine is to be used in the feed
regulator, it must be kept in view that (with a constant
feed) the discharge of brine increases as the output of
distilled water decreases. Therefore, the function of the
brine in the regulator would be to shorten the feed
supply as the brine tends to be excessive. The feed,
evaporation, and brine will then all three be constantly
kept in due proportion to one another.
(Appendix to page 161.)
The “Normandy” Double Distiller, shown in Fig. 20
(p. 161), has its evaporator coils designed to meet all the
requirements detailed on p. 89 (sec. 48), as far as pos-
sible. Fig. 16 on. p. 134 shows the evaporator with door
off, and coils exposed to view.