. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . laws.—A- , Vice-President, Pennsylvania Railroad System. Another Point in Favor of the Outside Dry Pipe Editor Railway & Locomotive Engineering : In your description of the outside dry pipe used on theMallet locomotives of the Kansas City Southern Rv., and those parts. Therefore, anything that can be done to in-crease the steam space in the boiler and to insure drysaturated steam entering the superheater header is ofgreat benefit. X. Mean Effective Pressure in Engine Cylinders The cur
. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . laws.—A- , Vice-President, Pennsylvania Railroad System. Another Point in Favor of the Outside Dry Pipe Editor Railway & Locomotive Engineering : In your description of the outside dry pipe used on theMallet locomotives of the Kansas City Southern Rv., and those parts. Therefore, anything that can be done to in-crease the steam space in the boiler and to insure drysaturated steam entering the superheater header is ofgreat benefit. X. Mean Effective Pressure in Engine Cylinders The curves shown in the accompanying diagram arebased on the coefficients of average pressures for pistonsmoving at different speeds in locomotive cylinders ofordinary dimensions, for both simple and compound loco-motives. The upper curve gives the coefficient for simple engines,and the lower curve for the low pressure cylinder of com-pound engines when the volume of the low pressure cvnnucr i- _ ?3 , times that of the high pressure cvlinder. The coefficients indicated are those bv which the boiler. PISTON SPCEO IN FEET PER Showing Coefficients of Average Pressures for Pistons Moving at Different Speeds in Locomotive Cylinders your comments on the advantages of the same in yourSeptember issue, you neglected to mention one that is ofconsiderable importance. One of the substantial benefits derived is the increasedsteam space in the boiler that results from the removal ofthe large dry pipe. As you are aware, in the modern locomotive the factorof restricted steam space and of entrainment of waterwith the saturated steam as it passes into the dry pipe issomething that is giving a great deal of concern, par-ticularly as it results in the superheater being called uponto do a large amount of re-evaporation and which neces-sarily reduces its efficiency as a superheater. Likewise thewater passing over into the superheater header elementswith the saturated steam causes a great d
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