244 



HOPS. 



The heating conduits are open at hoth ends, one side 

 being in direct communication with the open air, and the 

 other connected with a conduit which delivers the hot air 

 into the dome, /, whence it escapes into the drying chamber 

 through apertures, g, and ascends through the frames con- 

 taining the materials to be dried. The water vapour and 

 spent air are carried away through a conduit, i, into the 

 smoke stack. 



A brisk circulation is thus set up by the difference in 

 temperature between the air within and outside the kiln, 

 and is increased by the draught in the smoke stack. A. 



=^ 



Fig. 71. — The Zelinka continuous kiln. 



simple device prevents any back-draught of smoke into the 

 kiln, and keeps the latter quite smokeless. 



This arrangement entirely precludes risk of the hops 

 being burned or charred, and the cast-iron dome, /, prevents 

 any dropped cones from coming into contact with the stove. 

 A large kiln of this type is in use on the estate of Herr 

 Zemann at Eadowesitz, near Aussig, and has given great 

 satisfaction. 



The Zelinka hop kiln ^ (Fig. 71) is arranged to work con- 



' " La Culture du Houblon," Prof. E. Leplae, Bulletin de V Agricul- 

 ture, 1897. 



