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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STEAM.
39
end of the vessel; and the water in the vessel gradually
diminishes until it has all boiled away. Now, what has
taken place is this. The heat from the gas flame was
first utilised in raising the temperature of the water from
60° to 212°—that is, 152° (and took a certain amount
of time to do that), the gas flame then continued to give
out the same heat, but such heat was no longer sensible,
Fig. 2.
as it was utilised in converting the water into steam, (and
took a further length of time to do that—i.e., by im-
parting the 966 units of heat, required to transform the
1 lb. of water into 1 lb. of steam, at atmospheric pressure.
11. Of course a great quantity of heat was lost in this
rather crude experiment—that is, a great waste of heat
occurred in the consumption of gas, as some of the heat