The Hawaiian gazette., 1885-06-24

The Double Effect

have used the double or triple effect that it is
great SAver OF fuel but have no where seen this
csATly illustrated as II the TeooEds Of the Wal
axes plantation. The economy of this process
Is 50 supAreni that ] think a statement frcm
the figures IN my possession viii be Of Interest 10
YOUR readers and perhaps profit 70 sugar manu-
fSctarerS-
roller mill, rolls S16o incheS-doInc good work,
extracting from ths cane about 20 per cent of the
Juice OF an average density, FOR the crop, Of 1V X
Of this they took lSse clArlhers Of 80 imperial
gallons eSch-96S,n0o gallonS-Ai this density this
juice contained, chemically, lsS2oQl pounds OF
crystaliEahle sugar and ~. *. pounds OF water 10
he evapo-ated The sugar actually produced was
'-s65 tOns'-l-S0oo or ZOO lbs Per gallon IN
steSd of a027 CHEMICALLY contained.
This SHORTAGE OF loss Of Us per gallon Is as
little or less than what vNs 70 BE expected II the
process Of nAaufActure- lhe cane, from WHICH
this sugar WAS prodGoed should hSVe weighed
l5Sl6,49l lbs bu. as thsrs was doubtless some
waste in grinding probably Il weighed little Inure
Ths green Trash (eno1sh being weighed to estsb-
liSh its correctness weighed S,444,a2J lbs making
Of dry trash. after loss Of - per cent IN dryig
sSa4 30 lbS-uhish with l,o1opc lbs OF cAal vas
used for mill purposes including the evaporation
Of the S,4sl. .sS5 lbs Of water.
Po- she crop of 1SS5-io the ulaaufaciuTi ng
machinery were added the aa..[s e7ee': the : Tol-
ler eQ1sa second mill Geared for slow surface
movement and mAcsration mschlnery-to be used
either for vet OF dry fraSh. Thus fAr there has
been taken or s406 clarlhecs the product from the
and tie roll most o. ne LE2Sl tsAsslIs LlE0l-l
the second mill beinc wet with kot water. HE
average density Of the juice from the trst nil WAS
sbo.t lOi. b, IS IN lSS4 but the mixed !uice OF
both rnills diluted and undlluied averages bat
Sa-R To make the illustration As clear As PosSl-
bic. have taken from the crop OF lSSh IusI the
Auaounf Of sugar manufactured in 1884. As the
csns was rua thrunGh both mills lAooo0plhs voold
yield as much sugar As The UeSrly 1h,uNNAO GTolnd
IN the one mill il 1884. but the Trash would b
diminished bv the smaller quantity OF cane and
by u. second grinding BY half million OF more
OF pounus Wills. the eyAPoratng would Be In
creased from the $500 gallons OF ms. mil luies
II lSSl 10 lIl6OS5 gallons Of the diluted juice Of
iSSS Prom this. il Eu1ld sppsaI ihai MaiAkea,
With half million Pounds Of dry trlsh less than
lGsf yezr and million po1nds Of coal less-iaGae
having been used this year1 have manufactured
100 tons ot sugar, and this SAVING Is Que 70 ne
Use Of the dclhle eHect-ln my last letter copied
fr,,r the latest work on sugar, examples showing
the CreAf saving IN labor BY lis Use ltalso should
be mentioned thsf the low Temperature al which
evaporation takes plscs and crystals Ers formed
prevents the formation o- l1yert OF E1aQe sugar
and the injury liable 10 Be done by high Temp
ratu-e when evaporation takes place under atraos-
rheric prsSsure. The i4.ps lS rs OF cane Of iSo,
yielded 9,lSSls45 bs !Sioe ircrn the hrst NIL 2nd
fron the second llS6Sl5-5 lbs juice the total BE-
Ing lO.SI1.SlQ rs all q. To-, Baure and yielding
9S tcnSEl SSo.qQQ rs pSn dry sugar. In process
Of rnscerstiuu enough water was added TO reduce
the mixed !uioe 10 density o. = -b-or 3 trsctio2
below. assume this density instead Of 81 As
find that after the same p-oPoracaate 6edoczon
for Ioss IN ruanufae.ure as occurred in 1854, ii
brings the density to about this nscre- He Trash
used for fuel. If all ussd ersporsied 4.l2 Ds of
water TO = dry Trash or It's equivalent II green
trash. and this allows loss in weight Of SSS psr
cent IN drying the Trash from the second mill
The incrssSe Of srSar from the second grinding
and naosrstio1 averages By the FOREGOING figures
u % per cent Il i tie trlAl Of whole season Of
all kinds Of ozne tplsnt and ratto11s-l which goto
make up crop Of 100 tons, and demonstrates
nost elsAriy the value Of the added Improvements
In The Interests of economy. They may hs summed
I'D TO BE sTsf BY the use of the Guubie eHect-i1
Swing the Inversion Of cane s1ssr from e1o h2H
70 one Per cent also very largely II the item Ci
labor as detailed in the PiHEfsrs NaHfkly for shs
present. month, and uore than all IN tie article Of
feel besides tie increased quality and value Of tie
sugar, soousd by the use Of the 2rol mih aud
msosrAtion increasing the q1AEiliy Of s1-ar fEvu
Is to Is per cent.
wha-s The trash is not szf5cisnt for fuel andEfls
scsrre and expensive, as have before sid, iinrra
be left 70 the adgnsni of the manager Whistler tie
increased amount Of sugar from mscsratioa VIII
psy fo- the fuel required, for the increased eva
can Be no doubt Its value fhe dTy trash which
II The case ef NEiake1 eTzpor1ted = los Of water
per l % of t-Ssh Is credited b. authority ,aiih
only s. lbs Of water evgporAting power per b
Of trash-hui presume that 80 BE under AZ
nospherle press1u-
In the foregoing calc1latiors 1 have pat The
Cauksrs at 500 imperial gallons sEeh. which IS
their aa-si-ai eaPaety. II tkSir eGbse ooussnis
4eser
uf the pipes II vii increase diminish ths number
Of gallons, bat VII noi alter the t0tzf Of szzsr.
ho1Eh Is VII give more OF less sEr1r 10 The gallon
Allowing 5O gallons 20 each ciArzer tie iuios
sanding lo1s B. contains very 1e1riy sgl7 kbs Of
pan sugar bat II 55a as sn told ths McOnis
clAri1srs Of kohsla are, thsl tAere would 1s1-l0
more of pan sugar or s-2SQ each nssfisEf gslIoz
VII rs1liy Be LILO gallons If IN nv estimates
l have ooznted the NSiakea ciArihsrs for 500 gal
Ions and they really had II them so Of sic> then
the sugar. Ec-s,Eily taken from each imperial gal
lon VII Be redzcsd from 2-a4 lbs Of crystzliEabls
sugar TO - Ebs-h1t Il vii not aits- ths pTgor-
fiaa Of krst Iu1os 10 secold or the rsyerss when
usaS1red II tEe same vessel Ikere may be
erro-s IN thsss Calculations but 1 think nO1s
which VII materially alter reSzlts the prirrIuJss
os vhich are sustained BY he Authorities 70 hich
I have soasss. and hope their pubicztlon may
benefit or planting Interests ICErs iFzly,
z. SIN speaking of eo1aoruie inlpro7ene1ts. 1
i1ts16ed to speak Of The MeDouaId Hydrsulic
pressure Regulator b-0zghf to TIE notice Of
tie :. Louisiana SEcar PlErters' Association :
b. NJ yoha Dynood. is vios President. a is
meeting II New Orlsz-s Aurl I0.h. ard
1Edly se1t 70 NE b! the Hon J. ". Smith.
lts u-1cs : 70 sq1zlIzs ibe pressure Of the
rulers making L always uniform whether the
fec1 Be thicker thinner. Increasing the Quantity
q juios extracted and diminishing the EEhIitT of
braak1es q nac6Icery- de says -Eor s1ze tn
ye4rs p1ss hare Esac double Kill. and II pre-
vlozs rezrs never eIcees1 6S pr es1s average ex-
traction tuT AZ entire csmpziEl- Daring The ssa-
so1 rsos1tiE ended. l ground oTsE so.10o tons CT
cz1s- and ootalnsd Al svsrscs sTf-sctioa & skz5s
zo0Ts - per cert thus showing gain Of Ebc-t 6
PER cent Over the bes- prsv5J1s res-lrs- believe
tins Ssi1 rsSzl.ed from Use Of the EydTsuiic d.
Tloe- Czp<- Archibald Michel saii shzf ne
merits Of lie EcDo-zld ReEziato- had bssa rzther
UodsZ es1Ezss5 than oshs-zlse. AID hs o01i5
e1oo-se eTe-T yurd sid for Il reEzS5i-E is
e1e1ey, and rs1is-llg safety to machinery, this
answering TIE d11blE p1rPose OF i,1-szSlnz tie
ps-oeutzEs Of J1sos and saczrIng SzfsfT.