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. 1902 Excerpt: ... now in use vary chiefly in this second respect, the means provided for gasifying the oil. It would, therefore, be well to look at the question of gas combustion first. Gases burn by combining chemically atjhigh temperature with oxygen, and the study of their combustion may be most readily divided into classes whose ...
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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. 1902 Excerpt: ... now in use vary chiefly in this second respect, the means provided for gasifying the oil. It would, therefore, be well to look at the question of gas combustion first. Gases burn by combining chemically atjhigh temperature with oxygen, and the study of their combustion may be most readily divided into classes whose characteristics are the ways in which this coming together of the gas and its oxygehare provided for. 56. This leads to the division: V Class I. Gas issuing from an orifice into a supporting atmosphere and where all the oxygen for combustion is derived from that atmo'sphere. Class II. Gas.mixed with oxygen insufficient in quantity for its combustion or for the formation of an explosive mixture, issuing into a supporting medium from which all necessary additional oxygen is derived. Class III. Gas mixed with oxygen in quantities insufficient for complete combustion, but sufficient for the formation of an explosive mixture, issuing Jrom an orifice into a supporting atmosphere, from which all necessary additional oxygen is to be derived. Class IV. Gas mixed with oxygen in just sufficient quantities for combustion, issuing from an orifice into any sort of atmosphere. We shall call a mixture of this sort a "chemical," mixture. Class V. Gas mixed with oxygen in such quantities as to form an explosive mixture, but with insufficient oxygen for complete combustion, burned in a mass by a single explosion. Class VI. Gas mixed with oxygen in chemical proportions, burned by a single explosion in mass. 57. The first class of combustion is very imperfect, consequently only low temperatures result, while large excesses of oxygen over what is chemically necessary are required. It is to this very imperfection that we owe the efficiency of our ordinary gas...
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