A 



CHAPTER III. 



CIRCULATION. 



vigorous and penetrating* circulation of air must circulation 



* . . essential. 



be maintained in a cold storage room for eggs if 

 good results are to be insured. The importance of 

 this condition, as applied to eggs especially, is quite 

 generally appreciated, and it is noticeable that the 

 warehouses producing the most perfect work have 

 scientific and carefully designed air circulating sys- 

 tems. It is also a fact that a strong, searching circu- 

 lation will do much to counteract defects in a cooling 

 apparatus, or wrong conditions in the egg room in 

 some other particular. In proof of this, the writer is 

 familiar with a number of successful houses where 

 prominence is made of the air circulating system 

 only, some of the other conditions being neglected al- 

 together, or attended to in a perfunctory manner. 



Before going farther, it is best that we separate circulation n 



* . ventilation. 



circulation from its tangle with ventilation. These 

 two terms are quite commonly confused when applied 

 to cold storage work. Circulation, as here discussed, 

 applies to the motion of air within the storage room 

 air currents resulting from a difference in tempera- 

 ture of the air in different parts of the room, or the 

 result of mechanical force applied to the air by use of 

 fans, blowers or exhausters. In distinction from cir- 

 culation, ventilation means the renewal of the air of a 

 storage room, either by forcing fresh air from the 

 outside atmosphere into the storage room, or by ex- 

 hausting the foul air from the room. Ventilation is 

 not under consideration here, but will be taken up as 

 a separate subject. 



The reason why a vigorous and well distributed circulation 



~ ^ and moisture 



circulation of air in an egg room will give superior absorbing 

 results over a sluggish or partial circulation may not 

 be readily apparent. A circulation of air is of benefit 

 in combination with moisture absorbing capacity in 



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