The sun. [volume] (New York [N.Y.]) 1833-1916, 1897-12-02
+ A LESSENING COST.
I'm TFENTY-sETEN YEARS IT HAS
CoME DOWN So PER GENT.

usw-Yanried Boilers Have Helped 10 Make
steam Cheaper. ana Devices for nYporhest'
tnR ana Compound EnEines Have Got Mere
Use out or t-Pnpcr Read 70 the nsGinsers.
A large part of yesterday mornings session
Of the annual meeting Of the American Society
Of Mechanical Engineers was devoted to rou'
tine business, but in addition to this papers were
read by +. W. Dean Of Boston and by William
Wallace Christie of Paterson, N. J. Mr.. Chris
tics paper was purely technical, treating OF
boiler tests and the classification and plotting
of their results. Mr.. Deans paper contained
much OF interest TO everybody who has to use
steam boilers for tho production OF power or
heat. II dealt with the reduction in the cost OF
steam power since 1870.
Twenty-soven years ago, no said, the Corlisa
ample condensing engine was the most eco
nomical in use, and this consumed 10 or 20
pounds Of steam an hour for each horse power
developed. In other words, that weight Of
water had TO be turned into steam every hour
for each horse power developed. To-day, in the
best types of compound engines only q little
more than one-half this quantity of steam Is
needed. or IN pounds. In tho near future. he
pnid, the use Of superhoated steam offers such
further economics that We have q right TO an.
tioipato n further red uction Of the amount
needed. to produce a horse power for an hour to
10 pounds. Already, in Germ any. . small
Schmidt motor has developed power at the rate
Of use Of 1917 pounds.
Mr.. Dean figures that the saving effected by
the use of compound engines. steam jackets,
steam reheaters, higher pressures Of steam and
greater expansions is 81 per cent. Another
saving of 8 per cent. is made by using vertical
engines instead of horizontal; vertical, inter-
nnlly fred boilers of tho locomotive type save
q per cent. more, improved CRATES 2 Der cent,
anc general economizers 2 per cent. moro, SO
that there is q direct saving altogether Of So
seven years ago. To this may be added a re.
duction in the cost of coal Of 40 per cent, and
to this o further reduction due to the smaller
charges. Including ali charges, Mr.. Dean fig
Sres that in 1870 ono horse power In a 1000.
on a consumption of ten pounds Of steam per
horse power per hour, such q plant should DO
run now upon a cost OF 1851 per year per
ally accepted figure.
1t was announced, yesterday morning that
resulted in the selection Of the following officers
Prcsident' Charles Wallace Hunt. New. York;
T. Wollman, Cleveland; W. F. Durfee, New
York; John G. Kafer, New York; David 4.
EEE sass;ef Gh' SoFSa sn 9. M Stiiss. Wa h%sss1; ps 4. 81;
francisco; Il: S; Hainea, Ati%nts, Ga; Gus 2.
Weufee: James b. Cincinnati;
Henry NJ =; s Sn1Ee rI philndelpRWIHii;, , George Rish'
There were more than $50 mombers in at
tendance at yesterdays meeting, and SO many
will eclipse even the phenomenal attendance Of
last year. Last night the society held q Tecep-
tion, a dance ice and !, a supper uieo at s aSG The re.
served continuously from 10 until midnight.
To-day there will be sessions in tho forenoon
and evening, at which many papers will DO