EVAPORATION 



355 



The scheme has been described by Whitehead, 16 and its mathematics fully 

 discussed by Svorcik. 17 



Recently it has been put into operation by Prache and Bouillon (British 



FIG. 207 



patent 26065, 1905). They employ an injector called a thermo-com- 

 pressor. As applied to a triple effect this system is shown diagrammatically 

 in Fig. 210. Live steam enters at a and aspirates and compresses a portion 



FIG. 208 



of the steam evaporated from the boiling liquid. This regenerated steam 



then re-enters the calandria along with the supply of low pressure steam at b. 



This system has been installed at the beet sugar factory at St., Leu 



