The arrangement
devised by Mr. Falconetti gets over the difficulty in a very elegant
manner. It seems as if it would be called upon to render great services
in the industries, and it well merits the attention of engineers
of roads and bridges, and of contractors on public works.--_Revue
Industrielle_.
* * * * *
THE WEIBEL-PICCARD SYSTEM OF EVAPORATING LIQUIDS.
In the industries, there are often considerable quantities of liquid to
be evaporated in order to concentrate it. Such evaporation is very often
performed by burning fuel in sufficient quantity to furnish the liquid
the heat necessary to convert it into steam. This process is attended
with a consumption of fuel such as to form a very important factor in
the cost of the product to be obtained. In order to vaporize, at the
pressure of the atmosphere, 1 kilogramme of water at 0 deg., 637 heat units
are required, and of these, 100 are employed in raising the water from
0 deg.
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