, 1880-05-29
Ilnrcrfcct Cotnbnatton and vvaate-Profs
Nalkcr,a Twin Furnace for Burning G
stttOko Alleged 10 he a Perfect Hucs

uxporinoutiny in fhis rorntrv and fn En-
gland; and know OF no other subject tiat
hcst pt,aincers and scientists for the last 150
years. . ..u.- ,u, ouo>, .o..,v ..
Nevertheless, boilers are hred Today rs
they were 200 years ago-namely: at ono
eni.
w With this mcsbod of firing, whenever fresh
WIN nus Ales.,ou v. ~, - i.ss .s.,s H., tta
coal Is thrown upon tae nea'ea h'tss Ill s'ae
furnace diSsillattou takes place, and tic gnsea
liberated pass over the bridge wall, not
one.hnlf Of them being consumed, as they
l'avo' not received the necessary amount Of
atmospheric uir or oxygen at q temperature
high enough for ignition.
The result of tmperfect combustion, In cases
Wliere so11 or oltu''nouS soa, 20 assu, os" s.n,.
Its Itself In dense black smoke lssu'nR Ilol1
tho chimney whenever fresh charge OF coal
Is mt into Tile furnace, pofluting the mir we
breathe, and destroying everything It comes
be called a double waste, first of fuel and
secondly OF property in Its vicinity. This
smoke IS composed Of fine particles Of carbon
tnct With sufficient atmospheric air at
sufficiently High temperature, it Will burn
and aid to the effective heating power Of the
fuel atN,ut 60 to 10 per cent, Which Is today
Tho theoretical eynporatlyc power Of one
nn1ifltt Of cOnt is almost fifteen pounds OF
water, whereas the average evaporation nc
tlluliy' attained Ill the United States Is. six
coal, coal SLOWING i loss ot aboat 70 pcF cent.
In tho ease If atlthracita coal, we find by ex-
neriucnt Tint there arc tnflammnhle gases
passing away which ought to bn utilized, for
OF oration Is nearly proportional to the coti,-
h1isfth1n n,nttnr In the fWD kinds of coal.
< IorEe l majority OF tho devices Invented to
prevent smoke and Increase evaporation arc
Gased On SOME plan Of Introducing air Into
tiours uf tho furnace does to a small extent
ppvnnoratinn pn1G i Unless very carefully n,anipit-
iated. / know Of ono instance in Montreal,
gave it i. faithful test, and found that In try
ii,r to Consume The smoke In this why they
lost 70 per cent OF coal. Other methods Of
Introducing Dir have been tried, but with
Some have introduced 1t through holes In
tho briilgn waii underneath tho crate bars,
t,asslne through perforated plates; others
throurh tic sije walls, and others havo tried
Fla lot.or r nrinctp1e rs tried is no better
than the coid for effcctiug economy, The
dcyiceS hitherto adopted for heating the mir
hayo failed. because whether conducted
cr forend thronal1 II pipn ii, the chimney
h. i,io,vor thc III, hns 1it received suiiicIent
XII ~ TGtt, ~ thn M 1"sca iheTatnd froni 6
.,rt,mr tw enai ,nnen,nnh ns ths fnmenoirt is
NJ ~ aho,,t ihi % Soo ;ieE. Fahrenilcit. it, -'''~
~ Thot % liz \ ni,,sisafnn ~ n Considerable ouan-
mt ~ ~ nIr .1 trourh the furnace doors will d.
r3oe 10y y. ~. 'S IL owHnnt from the fact
ttesW ,st esnpo"ton t rocera 10 r. bniler rfses
an," s'aI "eoe tf nent ~ wj,i"h TIM snfcv yalyo Is
soI, tno stoKgs nptIIs@ ~ .H ss,,ro nmgI smf1c,ant.
nu,S =, i,,shad III "t' ,vonid nnt hnwevar haye
~ ~ ,,,,,'o.ata,,d t'nt II 10 ncnnssnrv II nv
yn 1T ~ ~ ast u ,it,ia "a aaMttt"i }brnnoh
the doors. II tlne streams .. Is bene1 en9,
pela'. nut .no H"aes so4s,ta 4'tas"!lh,a T. 'a nj.
~ ,4. Mhas ,1n9',t. nnu 'ro,,,irnW coosiderahIn
n, II, a., atV p''s sro, te Tarti"s @vimp
tho boi!e1s in .sarge Ihe ayrng s1oxac
ms nGt Inc seseMac Ai'uw,,so s.,,as az ,,osImsat ~
guide hlm tor ne M rs r; ~ ut"In, ,a,ith ~
~ nun. ~ ny eaIly oSpS'inentse " nv, .'ot"ts