In the Dellwik process, however, the main point is the adjustment of the air supplied to the fuel in the generator in such a way that carbon dioxide is formed instead of carbon monoxide.
Indeed it was the use of water-power that gave the smith pressure strong enough to force his blast up through a longer column of ore and fuel, and thus enabled him to increase the height of his forge, enlarge the scale of his operations, and in turn save fuel and labour.
Petroleum has been used to some extent both as a fuel and as an illuminant.
Coal takes, however, an altogether secondary place as a fuel in Russia; wood is much more extensively used, not only for domestic, but also for industrial purposes.
There are teak forests and fuel reserves, covering an area of 732 sq.
The process is suited to easy ores and a region where the climate is warm and dry, and horseor mule-power, labour and quicksilver are cheaper than fuel and water.
Flexibility thus gained outweighs the cost of the fuel used and the increased loss of iron by oxidation by the Siemens gas flame.
The Nile supplied a waterway for the conveyance of fuel and for the distribution of the finished wares.
The surplus brine of Berchtesgaden is conducted to Reichenhall, and thence, in increased volume, to Traunstein and Rosenheim, which possess larger supplies of timber for use as fuel in the process of boiling.
When the necessary temperature of the fuel and superheater has been reached, the air blast is cut off, and steam is blown through the generator, forming water gas, which meets the enriching oil at the top of the first superheater, called the carburettor, and carries the vapours with it through the main superheaters, where the fixing of the hydrocarbons takes place.