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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66
SEA WATER DISTILLATION.
pose. Thus, if 1 lb. of water at a certain temperature
requires, say, 1,000 B.T.U. to convert it into 1 lb. weight
of steam, and 1 lb. of a particular fuel is capable of im-
parting, say, 10,000 B.T.U. when burnt, the ratio will be
one of fuel to ten of distilled water.
Heat from Coal, &c.
25. It should be mentioned that the results obtained
by Dulong (stated on p. 53) are not quite the same as
those of some other analysts. Thus in burning hydrogen
no more than 39,000 to 42,000 B.T.U. have been obtained,
against Dulong’s 62,535 B.T.U., by some analysts, whilst
other reports practically agree with Dulong’s analysis.
Economy of Working.
26. The “ economy ” of working distilling machinery
is the amount of distilled water that can be produced by
the fuel used or consumed—i.e., weight for weight. There
are, therefore, two points to consider—1st, the efficiency
of the distilling apparatus, and 2nd, the heating power of
the fuel. The heating power of various fuels has just
been dealt with in this chapter, the efficiency of the dis-
tilling machinery will be dealt with as we consider the
different types of apparatus.