Fuel Oil in Industry (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. 1922 Excerpt: ...as they pass by the tubes and naturally shrink in volume and tend to draw away from the front header, leaving a dead space at its top. The inclined wall contracts the space as the gases cool, so that they need every cubic inch of space to get through and every square inch of heating surface is flooded with hot gas. This action is continued through the second and third passes. The result is shown in fig. 45. In another installation a low setting had been used in connection with coal fires. Before the existence of the new baffle was known, the bridge wall was moved back, a horizontal shelf built and a back shot burner installed. At the end of 54 days they had been unable at any time to develop more than rating for the boiler, and they had lost 12 tubes. The inclined baffle (fig. 46) was installed in a similar boiler alongside the first as an experiment and at the end of 57 days no tubes had been replaced and they had carried a load averaging 200% of rating. As this meant a development of 100,000 more horsepower per year per boiler, the first boiler was immediately rebaffled and has since given equally good results." The application of fuel oil burners to any type of furnace is easily performed. Fig. 47 shows an oil burner under a vertical tubular boiler. Fig. 48 shows an oil-burning system of Scotch Marine boilers. Fig. 49 shows an oil-burning system applied to the Stirling water-tube boiler and fig. 50 to a return-tubular boiler. Fig. 51 shows a Babcock and Wilcox Oil Furnace, patented. CHIMNEY DESIGN The same procedure is gone through in the design for stacks for oil fuel firing as for coal burning. The required draft is the furnace at maximum overload in each case is obtained by the necessary height and the maximum volume of gases generated determines...