Nevertheless, the facts
relating to this so-called carburetted acetylene are in no way traversed
by its failure to establish itself as an active competitor with simple
acetylene for heating purposes, and since it is conceivable that the
advantages which from the theoretical standpoint the carburetted gas
undoubtedly possesses in certain directions may ultimately lead to its
practical utilisation for special purposes, it has been deemed expedient
to continue to give in this work an account of the principles underlying
the production and application of carburetted acetylene.
It has already been explained that acetylene is comparatively a less
efficient heating agent than it is an illuminating material, because, per
unit of volume, its calorific power is not so much greater than that of
coal-gas as is its illuminating capacity. It has also been shown that the
high upper explosive limit of mixtures of acetylene and air--a limit so
much higher than the corresponding figure with coal-gas and other gaseous
fuels--renders its employment in atmospheric burners (either for lighting
or for heating) somewhat troublesome, or dependent upon considerable
skill in the design of the apparatus.
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