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Read Ebook: Manufacturing Cost Data on Artificial Ice by Friedl Herman Luhr Otto
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ompressors, direct connected to two Simple Condensing Una-flow Engines; also two generators, two cooling tower water pumps, two air compressors, switchboard, etc. All to be equipped with the latest labor and power-saving devices.
Equipped as above, 25 tons of refrigeration can be easily obtained from one ton of ordinary 12,500 B T U coal. 1.8 ton of refrigeration is required to produce one ton of ice including the required cooling of storage house.
Assuming one month's shut-down for inspection and repairs, the total output of 160 tons of ice for 333 days amounts to 53,280 tons of ice.
ENGINE ROOM AND ICE PLANT LABOR COST:
Total per day $ 44.00
Additional labor cost for putting 12,000 tons into winter storage and taking out at .00 per day $ 1,200.00
Total Labor Cost $ 17,260.00
Engineers will do their own firing of boilers and will pull all the ice. One pull required every 43 minutes.
OFFICE EXPENSE:
Stationery, Telephone, etc. $ 300.00
Total Office Expense $ 3,300.00
Cost of Ammonia at 2 cent per ton $ 1,065.60
Cost of Oil and Waste at 2 cent per ton $ 1,065.60
Cost of Water at 3 cent per ton $ 1,598.40
Cost of Salt at 1/2 cent per ton $ 266.40
Plant Maintenance and Repairs $ 2,200.00
OVERHEAD CHARGES:
Insurance $ 1,000.00
Taxes $ 2,000.00
Total overhead charges $ 28,600.00
Total Expense $ 75,069.60
Divided as follows:
Overhead charges $ 0.53.7
Manufacturing Cost $ 0.87.2
NUMBER FOUR
Manufacturing Costs Per Ton of Ice Using Steam Power at Medium-Sized-Town Rates for Labor
COST OF POWER:
A modern, highly efficient and economical steam driven high speed compressor plant must be installed so as to get the maximum power out of coal. The boiler-room will contain two 200-H. P. water-tube boilers with automatic stokers and coal bin overhead holding two weeks' supply of coal. Steam pressure 175 lbs. As the firing of the boilers is automatic and requires practically no work on the part of the engineers, no firemen will be needed. Ashes will also be automatically removed. The engine room equipment will consist of two 100-ton high speed compressors, direct connected to two Simple Condensing Unaflow Engines; also two generators, two cooling tower pumps, two air compressors, switchboard, etc. All to be equipped with the latest labor and power-saving devices.
Equipped as above, 25 tons of refrigeration can be easily obtained from one ton of ordinary 12500 B T U coal. 1.8 tons of refrigeration is required to produce one ton of ice, including the cooling of the storage house.
Assuming one month's shut down for inspection and repairs, the total output of 100 tons of ice for 333 days amounts to 33,300 tons of ice.
The total power cost of making 33,300 tons of ice is therefore, 33,300 x 37 cent, equals $ 12,321.00
ENGINE ROOM AND ICE PLANT LABOR COST:
Total per day $ 34.00
Total 365 days at .00 per day $ 12,410.00
Additional labor cost for putting 7,500 tons into winter storage and taking out at .00 per day $ 750.00
Total labor cost $ 13,160.00
Engineer will do his own firing of boilers and will pull all the ice and set it up in ante room if required. One pull required every 70 minutes.
Chief Engineer will act as shipping clerk.
OFFICE EXPENSE:
Stationery, Telephone, etc. $ 300.00
Total Office Expense $ 3,300.00
Cost of Ammonia at 2 cent per ton $ 666.00
Cost of Oil and Waste at 2 cent per ton $ 666.00
Cost of Water at 3 cent per ton $ 999.00
Cost of Salt at 1/2 cent per ton $ 166.50
Plant Maintenance and Repairs $ 1,500.00
OVERHEAD CHARGES:
Insurance $ 700.00
Taxes $ 1,360.00
Total overhead charges $ 19,520.00
Total Expense $ 52,298.50
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