46 



EGGS IN COLD STORAGE. 



proven before we can accept it. There is no doubt, 

 however, but that some good features are embodied 

 in above described apparatus. It is well known that 

 water, and especially salt water, has a great affinity 

 for impurities contained in the air, and when the air 

 is circulated in contact with the brine, as in the Linde 

 system, many of the gases and impurities common to 

 a storage room are absorbed. That they are ab- 

 sorbed to any greater extent than when the moisture 

 is simply frozen on the pipe coils, the writer is not 

 prepared to assert. An objection to this brine or wet 

 surface air cooling is the liability of trouble when 

 brine gets polluted with impurities. After some use 

 the brine will no longer act as a purifier, and in this 

 condition will contaminate, rather than purify, the 

 air. If attended to, this trouble can be prevented by 

 a periodical renewal, or by supplying a certain amount 

 of fresh brine at regular intervals and allowing a 

 portion to overflow. In discussing absorbents we 

 will find a description of a device which seems to have 

 all the advantages of the Linde method, and without 

 some of the objections. 



The location of air ducts as adopted by the Linde- 

 British company seems to call for some attention. It 

 is evident from their location that gravity is depended 

 upon for a circulation of air near floor, as both warm 

 and cold air ducts are placed on ceiling of room. The 

 flow of air into room is controlled by means of sliding 

 gates, which are adjusted to openings placed five or 

 six feet apart in the air duct. This does not provide 

 a well distributed circulation, as those goods directly 

 opposite openings in cold air ducts will be exposed to 

 a sharp blast of air, while others get practically none. 

 As a result of placing the cold air duct on ceiling, 

 there will be little or no movement of the air near 

 floor, when rooms are filled with goods. 



Fig. 8 shows a cross-section of a room fitted with 

 a system of air ducts and false ceiling for the circu- 



