REGENERATORS 



699 



passage n, between the coils of the chamber, until it ascends to the top of the vessel, 

 and then it flows away by a spout i, seen in fig. 1706. 



It -will be perceived that the hot fluid enters the apparatus at top, and the cold fluid 

 at bottom, passing each other, by means of which an interchange of temperature takes 



1706 



1707 



place through the plates of copper, the cooling fluid passing off at top in a heated 

 state, by means of the caloric which it has abstracted from the hot fluid ; and the hot 

 fluid passing off through the pipe and cock at bottom, in a very reduced state of 

 temperature, by reason of the caloric which it held having been given out to the 

 cooling fluid. 



Hodge's Patent Refrigerator for reducing the temperature of liquids. This re- 

 frigerator is stated to be more effectual than anything yet offered to the public for cool- 

 ing brewers' worts. The worts are passed down through the tubes in Jiff. 1709, and 

 ascend through the tubes in jig. 1710. These tubes are of copper, and are encased in 



1709 



1710 



a chamber ; water is let on under a head through the pipes A, sprinkling the outer 

 surface of the tube with a jet, keeping them moist ; at the same time a blast of cold air 

 is blown into the chambers by the fans B B impinging on the surface, carrying away 

 the caloric as fast as it is transmitted. Worts can be brought down from 212 to the 

 desired temperature by this process cheaper and quicker than any other refrigerator ; 

 in fact, worts may be brought down to freezing temperature. 



REFRIGERATOR. See REFRIGERATION OF WORTS. 



REGENERATING FURNACE. See IRON and STEEL. 



REGENERATORS. A name given to arrangements for absorbing the heat, as 

 it passes from the furnace, or place of combustion, and for parting with that heat to 

 fresh air admitted to supply the furnace. By alternating the direction of circulation 



