Page 24 



BETTER FRUIT 



1423-24 



NORTHWESTERN BANK BLDG. 



PORTLAND, OREGON. 



E.5HELLIY MORGAN 



NORTHWESTERN -* 



A Message 

 for Fruit and 

 Vegetable 

 Growers 



We desire to get in touch with Fruit 

 and Vegetab'e Growers in all parts 



/of the country in order to establish 

 r\f nriilt ntlCl Fruit and Vegetable Drying Plants 

 Ul 1 I U,LL U.IIIA for sing]e firms that want tQ build 



new and up-to-date drying plants for 

 themselves and with two or more 

 Growers that would favor the con- 

 struction of a drying plant on a 

 co-operative basis. 



There are many millions of dollars worth of Fruit and Vegetables 

 left to rotten on the ground and many more millions of dollars are 

 paid in freight rates, tin cans and boxes that can and must be saved. 

 We will invest some of our own capital, if you wish, as we are sure 

 that it is to our mutual benefit, if you write us today for particulars. 

 All information on this subject will be given cheerfully and free of 

 charge. If you are in business for making the best profits write now. 



The A. A. A. Evaporator Manufacturing Co., Inc. 



2371-73 Market Street, San Francisco, California 



EWBALTESAND 

 COMPANY 



Printers ♦ Binders 



Unexcelled facilities for the production of Catalogues, Book- 

 lets, Stationery, Posters and Advertising Matter. Write us 

 for prices and specifications. Out-of-town orders executed 

 promptly and accurately. We print BETTER FRUIT. 



CORNER FIRST AND OAK STREETS 

 PORTLAND, OREGON 



May 



house is sluggish. The velocity can be 

 increased by the use of fans and the 

 house can be made more efficient, pro- 

 vided the right kind of fan is used and 

 provided il is properly placed. To dale 

 I know of no air-cooled storage where 

 a fan is giving satisfactory results. In 

 most cases where they have been tried 

 they have been discarded. The reason 

 is very evident: the fan cither did not 

 throw enough air, because it was too 

 small, or il was placed in such a posi- 

 tion that it did not supply air uniformly 

 to all parts of the room. Disc fans are 

 of very little value, because their volume 

 is small and because they tend to churn 

 rather than deliver air when working 

 against pressure. Where blowers have 

 been tried they have not proved satis- 

 factory because they were too small or 

 because they were improperly located. 

 The circulation which they created was 

 not uniform or general. Another charge 

 that was made against them was that 

 they delivered a small stream of air at 

 high velocity rather than a large stream 

 at low velocity, resulting in the genera- 

 tion of heat by friction. Air moving at 

 extremely high velocity is undesirable, 

 too, because it carries too much dust 

 into the storage room. Dust is very ob- 

 jectionable where fruit is stored with- 

 out wrappers, because it sticks to the 

 oily apples and makes them very unat- 

 tractive. The best type of fan is the 

 sirocco or multiple vein fan, a type in 

 which the blades are parallel with the 

 axis. For a room thirty or forty feet 

 wide and forty or fifty feet long a three- 

 foot fan placed at the mouth of an outlet 

 flue probably will prove satisfactory. 

 The opening into the outlet flue should 

 be in the ceiling near the center of the 

 room. In rooms more than fifty feet 

 long, the air should be taken from the 

 storage room to the fan through a duct 

 swung along the ceiling equally distant 

 from the side walls. Intake openings 

 will occur at intervals along this duct 

 to take the place of the one large open- 

 ing at the center of the room in smaller 

 houses. The capacity of the fan neces- 

 sarily must be increased with the size 

 of the house. The openings for the tak- 

 ing of cold air into a storage house 

 equipped with a fan should be similar 

 to those which I have described for a 

 house with gravity circulation. A false 

 floor is absolutely necessary, for unless 

 the incoming air enters beneath the 

 false floor it will not come in contact 

 with all the fruit. Where the windows 

 for the intake of cold air open above 

 the fruit the air will tend to take the 

 shortest route across the top boxes to 

 the vacuum created by the fan in the 

 center of the room. 



To recapitulate, a large multiple vein 

 fan draws air from all sides of the room 

 toward a central air duct. The velocity 

 of the air passing through the room is 

 not objectionably rapid because it does 

 not pass through the fan until after it 

 has done its work in the storage house. 

 As a result there is no loss of refrigera- 

 tion due to frictional generation of heat, 

 and the amount of dust carried into the 

 storage room is reduced to a minimum. 

 After the apples are once cooled in the 

 fall of the year, the matter of keeping 

 them cool would not be difficult pro- 



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