April 2, 1908. 



0^ 



The Weekly Florists* Review* 



the end of the line and one just be- 

 fore the first branch to the generators. 

 These pockets are drained of condensa- 

 tion by a Squires trap furnished by the 

 Advance Packing Co., of Chicago. 



The engine room is a glass-enclosed 

 space at one comer of the building and 

 contains two lOxll-inch McEwen engines, 

 one of which is shown in Fig. 7, direct 



power for the compressor serving the 

 cold storage rooms, and together with 

 the refrigerating "plant complete was in- 

 stalled by the John Wishart Machine 

 Co., Chicago. 



The Refrigerating Plant. 



A power circuit some 600 feet long, 

 extending over the tops of the houses. 



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STCAM MAIN 



Fig. 2. Some of the Carnation Houses. 



Fig. 3. 

 Heating System as applied to Flower Beds. 



connected to 30-kilowatt Thompson-Ryan 

 generators, engines and generators being 

 built by the Eidgway Dynamo and En- 

 gine Co., Ridgway, Pa. These run at 

 300 revolutions a minute and are capable 

 of supplying 120 amperes at a pressure 

 of 250 volts, although only 220 volts 

 are carried on the mains. They are 

 fitted with governors and can be ad- 

 justed to maintain a constant speed re- 

 gardless of the load, or they may be 

 made to decrease the speed as the load 

 comes on or to increase it as desired to 

 meet special conditions. 



This equipment has but lately been 

 added to the original heating installation, 

 its primary purpose being to furnish 



connects the engine room with the com- 

 bined refrigerating plant, shipping room 

 and oflBce building. Figure 8 shows a 

 general plan of this building. 



The compressor is located in a glass- 

 enclosed space partitioned off from the 

 shipping room and is of the Linde hori- 

 zontal, double-acting type of 20 tons re- 

 frigerating capacity. In this machine, 

 a view of which is shown in Fig. 9, 

 the heat of compression is taken care 

 of by the unexpanded ammonia which, 

 in the form of fog or vapor, enters the 

 compressor on the suction stroke. 



Located alongside of the compressor is 

 a double-pipe ammonia condenser, con- 

 sisting of two series of pipes, one with- 



in the other. The ammonia is circulated 

 downward through the outer and larger 

 pipe, while the water is circulated in the 

 opposite direction thr.ough the inner and 

 smaller pipe. The compressor is driven 

 by a twenty-five horse-power General 

 Electric compound wound motor and con- 

 trolled by a Cuttler Hammer speed con- 

 troller, which permits of variable speed 

 corresponding to the amount of refrig- 

 eration required in the storage rooms. 



The Cold Storage Rooms. 



The cold storage rooms, pf which there 

 are four, are showm in the plan and 

 elevation in Fig. 10. A %-inch am- 

 monia line runs to a manifold on the 



COy^U BUM K CHS 



Fig. 4. Plan of Power House. 



