. Electric railway journal . of vacuum. The Rankine-cycle efficiency under thesesame conditions was per cent and the thermal effi-ciency was per cent. The load under which the turbine was tested took theswings as normally produced by the railway substations which were being supplied with power, but a numberof tests were also made under throttle control to showthe influence of the swings upon the economy. Thelatter results, however, did not differ from the former,showing that swings even amounting to more than 30per cent of the average load made no appreciable dif-ference in the per
. Electric railway journal . of vacuum. The Rankine-cycle efficiency under thesesame conditions was per cent and the thermal effi-ciency was per cent. The load under which the turbine was tested took theswings as normally produced by the railway substations which were being supplied with power, but a numberof tests were also made under throttle control to showthe influence of the swings upon the economy. Thelatter results, however, did not differ from the former,showing that swings even amounting to more than 30per cent of the average load made no appreciable dif-ference in the performance. In the discussion which followed F. Hodgkinson, ofthe Westinghouse Electric & Manufacturing Company,who had designed the turbine, discussed the irregu-larity that appears in the water rate curve above loadsof 22,000 kw., this having been found definitely to bedue to some other cause than errors in the ascribed it in part to the action of the separator that 2 00] 1—t 1 1 r—I 1 1 1 1 1 1 1 i 1 1 1. t—1 1 1 1—1—1 1—1——1—1—1 ——1—1 16 n 18 19 20 21 22 23 24 15 2b 21 28 29 30 31 32 33Load in Thousands of Kilowatts INTERBOROUGH TURBINE TESTS—WATER-RATE CURVE was installed between the high-pressure and low-pres-sure elements for the purpose of removing the waterthat otherwise would be carried over into the low-pres-sure blading. This separator was of the centrifugaltype, and it was found at times to be inefficient,the removal of the collector plates actually reducing theamount of water carried over at certain loads. R. J. also commented upon this phenomenon, statingthat it is impossible to remove the last few per cent ofmoisture in steam with baffles. It is best to slowdown the velocity of the steam below 3000 ft. perminute, at which point the fog coalesces into dropswhich will separate themselves from the flow ofsteam. In answer to a number of questions that were raisedduring the course of the discussion, Mr. Stott stat
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