FOREST SERVICE WATER SPRAY DRY KILN. 6 
Where high humidities are used, a small heating coil is usually neces- 
sary above the lumber to prevent condensation of moisture on the 
cold ceiling of the drying chamber. 
Fig. 2 — TsnDical cross section. Brick walls, wood spray chamber, wood roof, and slant piling. 
At either side of the drying chamber (fig. 2) or along the center 
thereof (fig. 1) a spray chamber from 12 to 15 inches wide is provided 
the full length of the kiln. Each spray chamber extends from a 
point about 18 inches above the floor of the drying chamber to the 
( # bottom of the kiln proper. Spray heads are spaced at regular inter- 
vals along the top of the spray chamber to deliver cone-shaped sprays 
of water down the chamber. The water from the sprays drains 
from the spray chamber to a suitable well. The air current resulting 
from the action of the water sprays passes out sidewise from the 
spray chamber at the bottom of the kiln proper. The air as it leaves 
