Refuse Disposal and Power Production (Paperback)

This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1904 Excerpt: ...combustion with the gases distilled from the raw material. The formation of water gas has always been regarded as one of the advantages of the steam jet blower, and as being peculiar to this type of draught, but a glance at Fig. 35, and a perusal of the extract from the patent specification, will show that the use of an exhaust steam jet with a centrifugal fan must inevitably have the effect of producing water gas. To quote from the specification, we are told that It effects a considerable advantage in the combustion of the furnace. The only advantage accruing must obviously be due to the presence of moisture--the formation of water gas, and it is indeed remarkable that this combination of an exhaust steam jet and a centrifugal fan was patented by one of the severest critics of the steam jet blower, which, on the other hand, is always designed to use live steam, and that usually at high pressures. Such figures as are available all go to show that the combustion is more perfect where steam jet blowers are in use. Care has been taken to include authentic figures only, and the analyses here quoted may be accepted as correct. As is well known, the nearer the air supply is kept to the quantity theoretically required for combustion, the higher is the percentage of C02 (carbonic oxide). The test for C03 is now generally accepted as being the standard test for determining the efficiency of combustion. As it is useful in comparing results obtained with the two systems of draught production to know the air pressure in the ashpits (in inches of water), and also the rate of combustion, these figures are included in each case, (see Tables, pp. 152, 153). The comparative figures in the following tabular statement are worth careful study; they very clearly show that for p...