ELECTRIC POWER PLANT

ELECTRIC POWER PLANT The management of a coal-fired electric power generating plant is studying the plant's operational setup _i_r_1_9_1:(_l_e_r_tg comply with the latest emission standards under the air pollution control laws. For the plant in question, maximum emission rates are: I maximum sulfur oxide emission 3000 parts per million (PPM) - maximum particulate emission (smoke): 12 kgfhour. Coal is brought to the plant by railroad and dumped onto stockpiles near the plant. From there it is carried by conveyor belt to the pulverize unit, where it is pulverized and fed directly into the combustion chamber at the desired rate. The heat produced in the combustion chamber is used to make steam to drive the turbines. Two Egg of coal are used: grade A, which is a hard and clean-burning coal with, low sulfur content fairly expensive thought; and grade B, which is a cheap, relatively soft and smoky coal with high sulfur content, as in Table. COAL Sulfur Oxides in Flue Gases 1300 PPM 0.5 kit B 3300 PPM 1.0 kgft | The thermal value in terms of steam produced is higher for coal A than for coal B, namely 24000 pounds per ton for A against 20000 pounds per ton for B. Since coal A is a hard coal, the pulverize unit can handle at most 16 tons of coal A per hour, whereas it can pulverize up to 24 tons of coal B per hour. The conveyor loading system has a capacity of 20 tons per hour regardless of which coal is loaded. Formulate a linear programming mod el of the