Honolulu star-bulletin. [volume] (Honolulu [Oahu, Hawaii]) 1912-2010, 1913-10-11
Pertinent Questions viii Be
Answered by Members of
Association

| ings annual affairs and the committee
in charge of the meeting expects q
large attendance. It has been felt for
some time that it would be of great
benefit to the engineers located OF
the other islands if they could be
| brought together once year to dis
| cuss the different phases of their
work connected with the mill end oil
the sugar industry. =
The planters regularly hold meet
ing once year under the auspices oil
the Hawaiian Sugar Planters Associ.
alton, when topics dealing with all
! branches of the sugar industry are
brought up and discussed. and the
idea has, therefore, been conceived by
the Hawaiian Engineering Association
to hold similar annual meetings for
the mill engineers. -. 4
A series Of so questions has been
prepared and mailed to all the mill
engineers, ten questions being under
each<of the following headings:
Mill, -: -
Boilers and Furnaces,
Ciarifiers and Evaporators,
Vacuum Pans and Sugar ROOM
Labor Saving Devices, and
General Questions. =.
Each of the committee men has one
of these headings in charge and at
ter the questions have been received
tthey will be tabulated and presented
I in the form of paper by tl1eadfffer.
ent committee men. A general dis.
tcussion will then follow, all of which
will be incorporated as proceedings
OF the meeting in a publication print
ed by the Hawaiian Engineering As;
ISOLATION.
The questions are as follows:
Questions on Milling. >
!. Will offsetting the hydraulic
jacks under the mill equalize the
strain on the top roller?
2. What is your opinion of = high
roller speed versus low roller speed?
3. What number of rolls 20 you
consider necessary to obtain the best
all-around results? Is there q limit
to the: extraction of sucrose in the
c2ne, all things being considered?
4. What type of housing do you
consider the most efficient, economi-
cal and convenient? Ii,
g. Do you favor any particular
grade 6f iron and pitch of growing
for your rollers?
What has been your experience
with rollers of different diameters
housed together and how do you ar
range them? sas
4 T.. What is the most effective
method of applying maceration wa
ter2 Do you prefer any particular
temperature?
s. Do you work on the basis of a
constantly increasing pressure from
first to last mill or vice versa?
8. sgon what theory do you work
in reducing the moisture of bagasse?
10. Do you believe in raising the
heel of returner bar so that its sur
face is practically concentric with
the top ron, or should there be con-
stantly increasing opening from toe
to heel? e
Questions on Boilers and furnaces.
/. What type of boiler and setting
do you consider most efficient and.
economical? ~. -. II.
2. Do you believe in the use. of re-
ducing valves or in one set of boilers
at low pressure for boiling house
work and another at high pressure
for power purposes? Z
8. What is the best method of pre-
venting scale formation?
l.. Do you consider the burning of
waste molasses as supplementary
fuel of any great benefit? 7
5. What is the taee value OF ba.
gasse to. you? Es
4 s. What, in four opinion, is the
proper amount of bagasse to burn
per square foot of crate area? Z
Z. Will the same furnace do for
all kinds of bagasse?
+ 8. How can high furnace tenn
be best maintained?
9. Have you found differences in
the fuel qualities of bagasse derived
from different varieties of cane of
same fiber content? :,
10. What is your opinion OF. ba.
gasse driers?
Questions on CHARTERS and Evapora-
tors.
l. Have you any preference among
the various systems of Qualification
and why?
2. What do you think of Pre-
Evaporators?
3. What do you consider to be the
best method to prevent entrainment?
4. What is your opinion regarding
the juice inlets on a Standard Eva.
porator?
5. Is it more economical to have
central condensation?
6. What is the best method of
cleaning evaporater tubes?
7. What type of evaporation do you
consider the most efficient and econo-
mical?
8. At the end of a weeks run,
which effect is the dirtiest? Estate in
this connection whether your effect is
double. triple or quadruple).
9. What do you think of providing
an extra cell to be cut in, say, at the
middle of the week, and to replace
that cell which is inclined, on account
of being dirty, to hold back the mill?
10. Do you believe i: double
pressing" of filtrates or is steaming
cuff