. Official proceedings . ?0 50 60 70 80 90 Temper/\ture: Degrees F/ihren^eit. FIG. Water Ratio Chart. 10 r*resent Steam Turl)ine Progress. 339. I .a J 4. .? 6 7 a 5 LI 12. 14 17 FIG. Entropy. 340 Proceedings Railway Club of Pitlsburg^h. A form of condenser brought cut by M. Leblanc is an ex-ponent of excellent condenser practice. Counter current efifectis attained, and harmful efifect of clearance in reciprocatingpumps eliminated. Other advantages are plainly evident in Fig this arrangement, the theoretical vacuum may be producedand this is precis


. Official proceedings . ?0 50 60 70 80 90 Temper/\ture: Degrees F/ihren^eit. FIG. Water Ratio Chart. 10 r*resent Steam Turl)ine Progress. 339. I .a J 4. .? 6 7 a 5 LI 12. 14 17 FIG. Entropy. 340 Proceedings Railway Club of Pitlsburg^h. A form of condenser brought cut by M. Leblanc is an ex-ponent of excellent condenser practice. Counter current efifectis attained, and harmful efifect of clearance in reciprocatingpumps eliminated. Other advantages are plainly evident in Fig this arrangement, the theoretical vacuum may be producedand this is precisely the case of installations in actual servicewhere the conditions of vacuum system are : What has been said regarding operating conditions becomesmore obviouson inspection of the accompanying illustration (). This temperature-entropy diagram can be appreciated with-out a thorough imderstandmg of thermodynamics. It only needbe borne in mind that heat is the product of two factors—abso-lute temperature and the rate of heat transfer (entropy). There-fore, these factors may be plotted as co-ordinates and areas ob-tained represe


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