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Show COPT OF STEAM POJ TER PRODUCED NEAR SALT LAKE TVITH UTAH COAL by PR, H. T. PLUMB In estimating the probable cost of electrical energy produced from Utah coal in a large steam plant located on the shore of the proposed " Great Fresh Lake", I was asked to have in mind specifically the following requirements: STEAM PLANT. 100,000 Kva Modern steam turbine plant. To furnish 2~ phase, a. c. power for electrolytic purposes. Plant must be efficient but not too expensive.' Use Utah coal, run continuously and use freshened lake water for condensing steam. Incidentally salty water might be used for coding, or a cooling pond provided for re- circulation of condenser water. LOAD CONDITIONS. Electrolytic Zinc Plant and similar constant loads. 100,000 Kw. 100$ load factor, 100$ power factor. Little or no transmission losses. No distribution expenses. Energy to be sold at station bus bars as generated. To operate at 100$ lead factor for long is impossible. It would require extra capacity in boilers, turbines, etc., and these would add to the fixed charge. Hence, it was decided that over a long term of years a load factor of about 75$ was more reasonable. FUEL. Utah slack coal. Not less than 12,000 BTU. per pound. We were asked to use £> 2.00 coal and have made calculations with it. But the present price of dust coal is about | 2 « 25 per ton, in cars at Salt Lake City. It is very doubtful whether this price can endure in the future due to the increasing use of slack for domestic and commercial furnaces. Hence we have estimated over a 20 year period the price might average $ 2.60 per ton at the proposed plant. Thus, Present freight rate to Salt Lake City & U55 Add to this a mine price of say - - - ~ - - 1,00 and for handling .05 Total price used in this estimate ----- ^ 2,60 Seme coal dealers estimate $ 2.75 as a more probable long- period price of slack. Certainly prosperity cannot come by depriving coal men of a just profit. - 14 - |