. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . Aver ».« Pounds of 1023 30AL PER 101924 oc s w ss Ton Milee102a N Fre 1GHT192a 5ERVK :b f*o- 3 ..., b 1. „.— H. _J Fig. ocomotive Fuel ConsumptionFreight Train Service Passenger and in the cylinders and that five per cent of its boiler capacityis required to cover radiation losses, requirements fortrain heating, etc. A total boiler capacity of 40,000pounds of steam per hour is therefore assumed, whichalso means that 40,000 pounds of feed water per hour willhave to be heated through 160°. The
. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . Aver ».« Pounds of 1023 30AL PER 101924 oc s w ss Ton Milee102a N Fre 1GHT192a 5ERVK :b f*o- 3 ..., b 1. „.— H. _J Fig. ocomotive Fuel ConsumptionFreight Train Service Passenger and in the cylinders and that five per cent of its boiler capacityis required to cover radiation losses, requirements fortrain heating, etc. A total boiler capacity of 40,000pounds of steam per hour is therefore assumed, whichalso means that 40,000 pounds of feed water per hour willhave to be heated through 160°. The heat required perhour to heat the feed water is therefore: 6,400,000 (1)From the steam tables it is found that each pound ofexhaust steam in being condensed from steam at 225° towater at the same temperature supplies 962 to the. Fig. No. 7—Elesco Heater feed water; the amount of exhaust steam required to heatthe feed water is therefore:6,400,000 = 6,650 pounds per hour (2) 062The total heat expended in producing pounds ofsuperheated steam per hour from cold water at 55 is:1,311 X 40,000=52, per hour (3)In order to effect an economy of one per cent on thisamount, it would have to be diminished by one one-hun-dredth or per hour; but as appears fromi 1 i the feed water beater actually saves 6,400,000 ! hour, so that the saving on the total heat expended is:524,400 — = per cent (4) 6,, this economy is effected by the use of a pro-portion of the total exhaust steam which will amount to (after allowing for the volume of exhaust steam fromthe auxiliaries which may be utilized in the feed waterheater) between fourteen and fifteen per cent of the totalexhausted from the cylinders. The foregoing shows that an appreciable and directsaving can be obtained
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectrailroa, bookyear1901
