The Hawaiian gazette. [volume] (Honolulu [Oahu, Hawaii]) 1865-1918, 1916-10-13


Heat raw juices tpartially) with last
cell vapors. 8@ ~. Ts, O.,
Provide sufficient capacity In evapor
ators TO insure evaporation to high
| densilies Ea.. y 81.
High Praise Given HES..E s...
Chairman Kopke repeated what Mr.
Hind had said and asked the engineers
to assist in the perfection of this re.
port. He said that every engineer who
has any exact data, on any of these sub.
jeUts could better help the industry and
his fellow engineers by reporting them
so that they can be Incorporated in the
revised report. t.s.. ~,
/ am pleased TO see this work done.
1t has been well done, he commented.
X. =. Norris complimented Mr.. Hind,
saying that "this paper is going to
be of very great value to me because
the data are in available form. Other
authorities give similar data but IL
has to be Interpreted and analysed by
computation processes. Mr.. Hind 3 re.
port is the first comprehensive treatise
applicable TO Hawaiian practise that
has been drawn up" ~.
Joseph Meinecke, and II. McCubbin
also complimented Mr.. Hind on the
character Of the work performed and
Mr.. Kopke added that rs the data here
given are useful to each engineer he
ought 10 pass that knowledge on to
others who are in the same business.
Scale and Heat Losses -..
Mr.. Norris having Questioned the nc
rurracy Of Mr.. Kinds data on the reIa-
ton between thickness of scale md
haot In0ono Ahn InNt
were obtained by Mr.. Converse, for
many years chief. chemist for the Dear.
hon Chemical Company. They were the
results Of Mr.. Converse g original in
vestigations being compiled from aver
ages obtained in actual practise. 70 40.
Mr.. Kopke thought averages not nj.
ways fair basis especially where there
is a very wide range between maxi
mum and minimum observations. Mr..
McCubbin thought too much sReiqht
given to the presence of scale, iliustfat
ing his opinion by reference to his own
experience in mills where artesian
water is nseds and Mr.. Kopke raised a
laugh by suggesting that "possibly
more scale would increase the heat ef.t
fciency." ~. ,tf,,,,....., /, -, .
He referred to the practise in Europ..
can beet factories where the chemical
composition of the scale is cha ped
in stu in the tubes so that boilers can
operate continuously throughout cam.
Daign. 1.-THE thickness of scale has
little TO do with it. II is whether the
scale Is hard and compact or loose and
spongy that connts," he said. This
closed the debate on the committee re.
7orts and the rest of the morning was
devoted TO review of points of inter.
at considered in previous meetings.
Lecture On Brick
The proper use of "high temperature
cements" evoked much difference Of
opinion and the discussion wavered be.
tween the FIRE box and the stack lining
The point was again emphasized that
I takes a brick mason 10 lay brick.
The value of special cements depends
IN their fusing properly. If laid too
thick they ooze under high, temper,
atures. Hence "sub. joints" must be
used in furnaces, with only a thin
smear between the bricks. The brick
Is the main thing, not the mortar and
v little Of that, should be used as possil
Die. The workmanship is important.
Stack temperatures up to 500o to 700'
10 not affect the quality of ordinary
red brick but IL stack temperatures 90
higher than that fire brick should be
Ised. This led to an interesting ae-
count Of the technique Of brick, making
~ c. B. Andrews who said that only
twO-thirds Of the product Of every kiln
charge are merchantable. -Et
The bottom layers in the kiln are
burned, warped out of shape and
the corners are vitrifed. These are too
brittle also. The top layers are under
burned, soft aud easily broken. One
remedy would be to buy only of re-
.outable firms, or have someone inspect
the brick at the kiln. Many brick.
makers will run in these commercial re-
iects for the sake of the profits.
Balm" and Harmony
Other serious topics briefly discussed
we're, air in the boilers and the neees
'ity for bleeding" them; the work
of the Moorehead" trap at Paia mill;
advantages of electrifcatiOn of mills;
the grouping of units in the mill; and
some comparisons between centrifugal
and steam driven, OF turbine, pumps.
Then Joseph Meinecke started some.
Jung ny iV"ai hihB budt inc CuiCl
value of recording instruments in the
sugar house was in producing harmony
between the engine-room staff and the
sugar house men. This provoked q
'ound of pleasantries and personalities
joined in between Messrs. Ebeling.
Hind, Kopke and MoCubbin.
Mr.. McCubbin who had industriously
elaborated a fake engine room on the
blackboard then tried to get a fall out
of the veteran chairman by entangHng
him in mathematical calculations re-
garding the steam turbine as an econ
Omizer Of horsepower. The chairman
put his finger on the weak point in the
calculation and the convention laughed
Then they adjourned sine die and
went to luncheon with the Ad Club,
after accepting @. GiaGometti 3 invi.
alton to attend the chemists conven.
ton today.
----S HS-