Gas and fuel analysis for engineers A compend for those interested in the economical application of fuel Prepared especially for the use of students at the Massachusetts institute of technology . Similarly, Per cent, heat lost Per cent, carbon in coal 200 +per cent. CO2 X Heating value of coal Per cent. C02 +per in temperature in °C. X The values found by this equation are per cent, low,as no cognizance has been taken of the water vapor. In rapid work the following formula will be foundmore applicable: Let o and n represent the percent-ages of oxygen and nitrogen found
Gas and fuel analysis for engineers A compend for those interested in the economical application of fuel Prepared especially for the use of students at the Massachusetts institute of technology . Similarly, Per cent, heat lost Per cent, carbon in coal 200 +per cent. CO2 X Heating value of coal Per cent. C02 +per in temperature in °C. X The values found by this equation are per cent, low,as no cognizance has been taken of the water vapor. In rapid work the following formula will be foundmore applicable: Let o and n represent the percent-ages of oxygen and nitrogen found in the chimney-gas; then the ratio of the air actually used to thattheoretically necessary is expressed by the formula 21 2\ \ n. / Applying it in the case of the flue-gas given, it becomes 21 21 7—: r = l = 1 • 533 ratio. 2I _ (79 X 7A\ \ Multiplying this by , the theoretical number ofpounds of air per pound of carbon, we obtain asagainst on page 28. Bunte * has given a shorter method for the deter- * Jour. f. Gasbelcuchtung, 43, 637 (1900) ; Abstr. Jour. Industry, 19, 887. TABUNTES CHART SHOWING HEAT LOST IN CHI TEMP % PER CEI m>-°90 10 -w 40. X. ^-GASES FROM THE CARBONIC ACID AND THEURE. RCIENCY 60
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