. Cassier's magazine. FIG. l8.—CONDENSER WITH ELECTRICALLY DRIVEN AIR AND CIRCULATING PUMPS, BUILT BY W. , SON & CO., LTD., BEDFORD. FIG. 19.—END VIEW OF SURFACE CONDENSER MADE BY W. H. ALLEN, SON & CO., LTD. CONDENSING PLANT 63 are used, it is usual to guarantee avacuum within 2 inches of the barome-ter, say, 28 inches vacuum with a 30-inch barometer, and under these condi-tions 60, 70, or even 80 to 1 have to becirculated, depending upon the initialtemperature of the water available. Injet condensing the amount of water re-quired is somewhat reduced, the usualallowance being about 24
. Cassier's magazine. FIG. l8.—CONDENSER WITH ELECTRICALLY DRIVEN AIR AND CIRCULATING PUMPS, BUILT BY W. , SON & CO., LTD., BEDFORD. FIG. 19.—END VIEW OF SURFACE CONDENSER MADE BY W. H. ALLEN, SON & CO., LTD. CONDENSING PLANT 63 are used, it is usual to guarantee avacuum within 2 inches of the barome-ter, say, 28 inches vacuum with a 30-inch barometer, and under these condi-tions 60, 70, or even 80 to 1 have to becirculated, depending upon the initialtemperature of the water available. Injet condensing the amount of water re-quired is somewhat reduced, the usualallowance being about 24 to 1 with coldwater for ordinary vacua. The capacity of an air pump dependsentirely upon the conditions, and varieswith the different temperatures of thecirculating water available, length ofexhaust line and liability to air leaks,and it is difficult to give any fixed rulefor determining it. The average allow-ance is, however, that the air pumpsshould displace twenty-four times thevolume of the water it discharges. With steam turbines the temperaturemust be so low and the volume of air inthe condenser is so many times that atno
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Keywords: ., bookcentury1800, bookdecade1890, bookpublishernewyork, booksubjec
