. Journal of electricity. The temperature of the steam at the burner was440° F., which indicated a superheated condition of65° F. The total steam used by the burners for a ten-hour test was found by the above means to be 7441pounds, while the total weight of water fed to theboilers proved to be 180,240 pounds. Hence the per-centage of total water evaporated by the boilers usedin atomization is determined by dividing 7441 by 180,-240, which is per cent. The total weight of oil fired was 14,093 poundsduring the test of ten hours. Hence, the pounds ofsteam utilized for atomization per poun
. Journal of electricity. The temperature of the steam at the burner was440° F., which indicated a superheated condition of65° F. The total steam used by the burners for a ten-hour test was found by the above means to be 7441pounds, while the total weight of water fed to theboilers proved to be 180,240 pounds. Hence the per-centage of total water evaporated by the boilers usedin atomization is determined by dividing 7441 by 180,-240, which is per cent. The total weight of oil fired was 14,093 poundsduring the test of ten hours. Hence, the pounds ofsteam utilized for atomization per pound of oil firedis obtained by dividing 7441 by 14,093, which provesto be pounds. The Taking of Boiler Test Data In previous articles we have touched upon all theimportant points involved in tests on boiler , however, have been considered under separateheadings and of necessity in a somewhat disconnectedmanner. In this and the succeeding papers, we shallendeavor to link these items into a connected THE DIFFERENTIAL DRAFT GAGEIn order to exaggerate the readings of the draft in inches of water,the measuring tube rests on a slope of ten to one in this type ofinstrument, and thus readings to another decimal point are ascer-tained which would otherwise be impossible. The Object.âWhat can you do? applies equallywell to the rating of inanimate objects as well as to theaccomplishment of human endeavor. And so the ob-ject of boiler testing is to try out the latent steamingqualities of the boiler and test its strength both forsudden calls and for endurance. The manner in whichthe mechanical design of the boiler can withstand suchtests and especially the efficiency with which it canperform its function of transforming the heat energyof the fuel into energy latent in the steam sent forthfrom the boiler are as a rule the factors that either addlustre to the name of the manufacturer or else relegatethe type of steam generator under test to the scrapheap. The Inst
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