. The steam-engine and other heat-motors . orates the condensed steam or, at lowtemperatures, if the steam be dry, tends to superheat it. The low-pressure steam formed in this way does some work on the followingvanes before it goes to the condenser. The conversion of frictional resistance into heat may occur inanother way, which forms the basis on which the theory of thePeabody calorimeter rests. Steam flowing through a simpleorifice in a diaphragm forms eddies. The high kinetic energy ofthe steam in the orifice is converted back into heat in the chamberof the calorimeter. As no external work
. The steam-engine and other heat-motors . orates the condensed steam or, at lowtemperatures, if the steam be dry, tends to superheat it. The low-pressure steam formed in this way does some work on the followingvanes before it goes to the condenser. The conversion of frictional resistance into heat may occur inanother way, which forms the basis on which the theory of thePeabody calorimeter rests. Steam flowing through a simpleorifice in a diaphragm forms eddies. The high kinetic energy ofthe steam in the orifice is converted back into heat in the chamberof the calorimeter. As no external work is done, the heat in thesteam at the final temperature contains as much heat as it did atthe initial temperature. This curve of expansion may be calledthe Constant-heat Curve. If the steam at the initial tempera-ture was nearly dry, at the final temperature the steam may con-tain more heat than is required by saturated steam and the excessis used in superheating the steam. Constant Heat Curves are hyperbolas since T = C. The con-.
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