. Railway master mechanic . es of both larger and smaller diameters. It isclaimed for tubes of ri, and 2 inch diameters, that, fromthe increased number ,ii, h. ;, >. .1 in . Mnal areas oftube plates, the heatiiitM I; - Hi t :- .nigmented, becauseof abetter ■ iii .i . nn-nts. On the other hand, it :- ..- ,,,.1 2V^ inch diameters that they av :.. ■ P ,;. .■ ith coal as 2 inch tubes, that thry U i;l . ,, ■ :,. ,,■ .. ■ ,Llii I 1. III- of smaller ill iij-tT III the ab-i hi-i-lit ,1 i- reaChed, I ilielilie tii ttjC nlininU ttiat lllnlir t a- .■lil
. Railway master mechanic . es of both larger and smaller diameters. It isclaimed for tubes of ri, and 2 inch diameters, that, fromthe increased number ,ii, h. ;, >. .1 in . Mnal areas oftube plates, the heatiiitM I; - Hi t :- .nigmented, becauseof abetter ■ iii .i . nn-nts. On the other hand, it :- ..- ,,,.1 2V^ inch diameters that they av :.. ■ P ,;. .■ ith coal as 2 inch tubes, that thry U i;l . ,, ■ :,. ,,■ .. ■ ,Llii I 1. III- of smaller ill iij-tT III the ab-i hi-i-lit ,1 i- reaChed, I ilielilie tii ttjC nlininU ttiat lllnlir t a- .■liliilll liill^ of operating locomotives in the western country, tubes of_ 4inch diameter would give fully as good results in boiler ef-ficiency as tubes of smaller areas of opening, and would beless liable to stop up. It is true that the heating surface may be increased inproportion to the number of tubes, but, as heretofore stated,it is not always true that the heating power of the boiler isincreased Mat, 1891 THERAILWAY MASTER MECHANIC. n» l.,.,.,,,, .ising ordinaryto the heated11 sitj; and tem-bustioQ takes ■at. With the ; of tubes will not ; t- n,. !■ .the other condition isob^. \ dency of the smaller till - - i soft coal, owing to small. 1 .1 i . i currents, the bodv nf tli- ii : perature .n,.; place in the lir- i. consumed g-a^. ^ . i -, , useof larger tuln^, ii,i i im • . ■ ■-. - .n-Lrer volumes, thus retaining fiT .I ! ■ -h \. Liiid proluut^- the entrance of <•( distance through the r , flame never entL*i-:s a tul i,,i ,, ;■ ., inches uu matter how ■ I ■ . , ,!- il:.^,n faceof the fire, but in smaller tubes the Hanie Llistanee is necessarily less than in larger ones. As it would require a volume to discuss this question inall its bearings, it must now be di-opped, and dependenceplaced on the discussion following this paper to bring outadditional points of importance. I may say, however, th
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Keywords: ., bookcentury1800, bookdecade1870, bookidr, booksubjectrailroadcars
