June 6, 1912. 



The Weekly Florists^ Review. 



13 



Show Case of Pennock Bros^ Pliiladelplifa, G)o!c(I by Artificial Be&igcration. 



nine inches long, eighteen inches high 

 and four inches wide, were placed, and 

 the ammonia expansion pipes led into 

 them. Each tank was cooled by 100 feet 

 of 1-inch pipe, bent zigzag and arranged 

 in seven rows each fourteen feet long. 

 One barrel, or 350 pounds, of calcium 

 chloride salt was dissolved in enough 

 water to fill these four tanks, making a 

 Weak solution, Sp. gr. 1.05, with a freez- 

 ing point just below 26 degrees Fahr. 

 The idea was to freeze this solid and 

 have a result similar to that obtained 

 with ice. 



How It Works. 



It works out admirably in practice. 

 At 8 a. m., when the store is opened, 

 the machine is started in operation. 

 The temperature in the cases at this 

 time is found to be just about as it 

 Was left the night before, around 45 

 degrees. The water in the vases is then 

 renewed and fresh flowers put in. The 

 doors are opened constantly for quite a 

 while, and the temperature rises in the 

 <!ase8 sometimes as high as 60 degrees. 

 This will naturally vary at the different 

 Seasons of the year, depending upon 

 the temperature of the room and the 

 Water supply. The cases are soon 

 brought down to the desired tempera- 

 ture, and toward evening the tanks will 

 have frozen solid again. The machine 

 '8 then stopped and remains so over 

 "ight, and generally over Sunday. Once 

 ^r twice, under exceptional conditions, 

 It has been found desirable to run a 

 short time on that day. 



The results have been satisfactory, 

 and the avoidance of the bother and 

 trouble of handling ice is in itself justi- 

 fication for making the change. There 

 have been no breakdowns or repairs to 

 interrupt the service, but there is a 

 balance on the profit side of the ledger, 

 in addition. The proprietors have or- 

 dered that the machine be overhauled 

 every year — a preventive measure. 



Cost of Operation. 



This is the way the account stood for 



the first year: 



Cost of electric power |301.07 



Overbaullng and new oil 10.00 



I nterest at 5 per cent 62.00 



Depreciation at 10 per cent 104.00 



1467.07 

 As compared to Ice SOI. 00 



Sa¥in«- 9 S4.00 



There are no depreciation charges 

 here shown against the use of ice. Un- 

 doubtedly there should be, for everyone 

 who has had experience in getting in ice 

 daily in large quantities knows how the 

 cases and refrigerator boxes are sure to 

 be bumped, scratched and broken. Also 

 ten per cent depreciation against the 

 whole cost of installation has been al- 

 lowed, including motor and wiring. This 

 is liberal and should no doubt be re- 

 duced. 



The motor used is a three horse-power 

 Fort Wayne 220-volt, direct current. A 

 test shows it to be taking about two 

 kilowatts of electricity as a steady in- 

 put. It is belted direct to the driving 



pulley of the machine, which runs at 

 280 revolutions per minute. 



Sliding Doors an Advantage. 



Mr. Lloyd concludes his description 

 by saying: "Particular attention is 

 called to the doors of this case. They 

 are sliding, in preference to hinged 

 doors. Sliding doors, if they are to 

 open easily, cannot be tight, and this 

 is a great disadvantage usually on re- 

 frigerators. In this case, however, 

 where the difference in temperature be- 

 tween inside and outside of the cases is 

 not so great, the sliding doors are 

 preferable. Every time a swinging 

 door is opened, the separating wall to 

 the full size of the doorway is removed, 

 and in addition a suction is created 

 which draws a large volume of the 

 cooled air out of the enclosed space. 

 Where the doors are to be opened fre- 

 quently, this is a large item and a 

 severe drain on the cooling system. In 

 this instance the sliding door can fre- 

 quently be moved a foot or so and allow 

 ample opening for the removal of flow- 

 ers. The disadvantage of looseness 

 around the door casings is more than 

 made up by the other advantages." 



A Little Less Technical. 



Some of Mr. Lloyd's details are a 

 little bit technical. What the retail 

 florists will want to know is whether or 

 not the machine is satisfactory to the 

 florist. It is. Pennock Bros, say so, 

 and the fact that they still are using it 



