4 Lbs. on the square inch mean absolute pressure in the boiler 9 No. III condenser Lbs. on the sq. inch mean effective pressure indicated in engine No. I . No. II Mechanical efficiency of engine No. I with intermediate shaft 26 27 Total I.HP. 28 No. II No. III Total B.HP.. Mechanical efficiency of engines I, II, III with intermediate shafts. TABLE I. State of the steam-jackets. Number of the trial. Date of the trial. Time of trial. 30 31 Lbs. per minute of water passing through the condenser 35 T.U. per minute discharged as I.HP. and in condensing water 36 Thermal efficiency as given by heat discharged in condensing water 44 45 99 above temperature of feed per minute discharged from the hot-well. by radiation total per minute discharged from engines. T.U. necessary to evaporate 1 lb. of feed to economizer per minute received as dry steam (= lbs. discharged from hot-well) received from each lb. of water condensed at boiler-pressure 46 Lbs. per minute of water from the jackets, &c. T.U. per minute received from the water from the jackets, &c. 49 Degrees Fahrenheit temperature of feed to the economizer received by water in the economizer Lbs. jacket-water per hour returned to the feed-pipe into the boiler 54 Degrees Fahrenheit temperature of the boiler. 55 Degrees mean temperature observed after mixture with feed. T.U. per hour received from the furnace (exclusive of steam lost) |