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Manufacturing Cost Data
ON Artificial IceMADE IN ACCORDANCE WITH
OTTO LUHR
CONSULTING ENGINEER
&
HERMAN FRIEDL
ARCHITECT
ICE MAKING SYSTEM
PATENT APPLIED FOR
154 WEST RANDOLPH STREET
CHICAGO, ILL.
Ice for Commercial Purposes
Ice for commercial purposes is obtained in two ways: either by cutting
during the winter time from our lakes and rivers and storing in large
Ice Storage Houses located alongside, or by freezing pure clean water
by means of artificial refrigeration.
All authorities are agreed that artificial ice is more sanitary than
natural ice and it is only a matter of time when the use of natural
ice will be prohibited except in special cases when the purity of its
source of supply is beyond doubt.
Our improved method of making artificial ice will cut the labor cost
down to the minimum and will enable the manufacturer to profitably
sell artificial ice at the price natural ice can be harvested. The
logical result thereof will be the building of a large number of
modern ice plants all over the country to supply the market with
artificial ice in place of the present natural ice.
We do not claim any wonders for our system but believe that the
following points of advantage will convince any practical ice
manufacturer that the labor cost has been cut in two.
First. We pull a complete row of the full width of tank at one time.
Second. Our air supply is permanently connected to the cans and the
supply to each can can be regulated, if required.
Third. We have a continuous air supply to the cans during freezing
as well as during thawing, dumping and filling. Our air supply never
ceases.
Fourth. Our air is automatically cooled down to the temperature of
the brine in the tank thereby eliminating all possibility of
moisture in the air pipes.
Fifth. Our cans are held in a solid frame of steel work and are
connected to the crane from the time the cans are pulled until they
are put back into the tanks, thereby doubling the life of the cans.
We give herewith data covering the cost of manufacturing ice and will
guarantee that under reasonably fair management the number of men
required will not be exceeded.
Do not fail to carefully analyze the following cost data. They may seem
extremely low but a thorough study of our system will prove them to be
very conservative.
[1]
NUMBER ONE
Manufacturing Costs Per Ton of Ice
Using Electric Power at Present Chicago
Rates for Power and Labor
Capacity of plant, 240 tons of ice per day, using 2692 cans of 400 lb.
capacity.
18000 ton storage house.
Average current requirement for freezing one ton of ice, including
storage cooling and all auxiliaries, 55 K. W. hours.
Average cost per K. W. hour, .9 cent.
Current cost per ton of ice, 55 x .9, equals 49.6 cents.
Assuming one month's shut down for inspection and repairs, the total
output of 240 tons of ice for 333 days amounts to 79,920 tons, or
roughly speaking 80,000 tons of ice.
Adding 1/2 cent per ton of ice for the required heating, the total
power cost of making 80,000 tons of ice is (80,000 x .50)
$ 40,000.00
ENGINE ROOM LABOR COST:
1 chief engineer per day $ 10.00
3 engineers per day $ 8.00
Total per day $ 34.00
365 days at $34.00 equals $ 12,410.00
or 12410 / 80000 = 15.62 cents per ton
[2]
ICE PLANT LABOR COST:
3 men pulling ice and setting
it up in store room. per day $ 6.00
3 men in store room per day $ 6.00
1 shipping clerk per day $ 8.00
Total labor per day $ 44.00
365 days at $44.00 equals 16,060.00
For filling the winter
storage house and taking
the ice out of it will
require 3 additional men
for five months,
equals 150 days x $18.00, equals $ 2,700.00
Total Ice Plant Labor Cost Equals $18,760.00
or 18670 / 80000 = 23.46 cents per ton
240 tons of ice equal 1200 400 lb... Continue reading book >>
