. The Street railway journal . oal an hour per avail-able boiler h. p. developed Pounds of per hour peravailable boiler h. p. Ratio of heating to grate surface 19-5 4-5 32-5 0-37 355-6 36^-9 387-3 I 3-84 3-76 3-78 3-II 3-05 93 9 removed by a steam blast, but comes off with ease when particles clinging to the tubes appear to have been fused. Theymuch resemble the formations observed on boilers burning blast fur-nace gases. 5. The water box furnace lining is an advantag
. The Street railway journal . oal an hour per avail-able boiler h. p. developed Pounds of per hour peravailable boiler h. p. Ratio of heating to grate surface 19-5 4-5 32-5 0-37 355-6 36^-9 387-3 I 3-84 3-76 3-78 3-II 3-05 93 9 removed by a steam blast, but comes off with ease when particles clinging to the tubes appear to have been fused. Theymuch resemble the formations observed on boilers burning blast fur-nace gases. 5. The water box furnace lining is an advantage when used inconnection with an open feedwater heater, like the Webster,Hoppes, etc. Too much water for boiler feed purposes was circu-lated on the test. If a water box is a necessity (the writer thinks itis not), it should be made strong enough to stand the boiler pressureand to receive the feedwater just before it enters the boiler. In thisevent pipes should be provided for an induced circulation when notfeeding the FIG. 3.—BABCOCK & WILCOX STOKER. 6. The stoker will quickly respond to sudden fluctuations inpower demands. 7. The economic results obtained on the trials were good. 8. Crowding the fires produces but little reduction in theeconomy. 9. About three-fourths as much capacity can be developed withrice as with buckwheat coal, under like conditions, with thisstoker. 10. More than ordinary care and skill is required in operatingthis stoker, on account of the graduated air blast used. This isspecially true for a plant receiving mixed coal, i. e., buckwheat coalfrom different mines, or from different levels from one mine. Anyinattention may result in too much or too little air being supplied JtinK, 1896.] STREET RAILWAY JOURNAL. 371 over the last two, i. e., the burning down and burning out compart-ments, or 6 and D of Fig. 2. BABCOCK & WILCOX STOKER. General Descrip/ioii.—I^ike the Coxe, this stoker is of the chaingrate type. It is useful only for burning bi
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
