The Florists' Review 



Dkckmbkr 3, 1014. 



and four 2-inch returns under the bench. 

 The whole system of piping is fed by 

 ■a 6-inch main and there is a return of 

 the fijuue size. The north ends of the 

 houses are connected to the service 

 building. The boiler used is a 9-section 

 Giblin, with a grate area of 2,592 square 

 inches, and it is assisted by an Ideal 

 circulator. 



What temperature can be maintained 

 in each of the houses? In this part of 

 Washington state the outside temper- 

 ature seldom goes below zero. How 

 many more of the 24-foot houses can be 

 heated by this boiler? G. D. R. 



The temperature which can be main- 

 tained in a greenhouse depends to some 

 extent upon the amount of glass in the 

 exposed walls, as well as upon the con- , 

 struction of the house and the exposure 

 to cold winds, and none of these points 

 is made perfectly clear in the inquiry. 



Under favorable conditions and pro- 

 vided the houses in which there are 

 three 2 V^ -inch pipes have only one ex- 

 posed wall in each house, and this does 

 not contain more than three feet of 

 glass, I would expect to maintain a 

 temperature of 50 to 55 degrees with the 

 amount of radiation stated, and by 

 heavy firing and the use of a circulator 

 it should be possible to make it 60 to 

 65 degrees, when it is zero outside. If 

 the single 24-foot house has two walls, 

 with three feet of exposed glass in each, 

 I would expect to keep it at 60 to 65 

 degrees, and by running the system 

 under pressure the temperature could be 

 raised 10 degrees. In the narrow house, 

 provided it is a lean-to with only one 

 exposed wall, it should be possible to 

 keep the temperature at 55 to 60 de- 

 gress, and even higher with heavy firing. 



I have never used a Giblin boiler of 

 the size mentioned and do not know just 

 how much may be expected from it, but 

 from the amount of grate surface I 

 would consider it safe for 4,500 square 

 feet of radiating surface, or fifty per 

 cent more than in the present houses. 

 This estimate is for heating one-half of 

 the houses to GO degrees and the bal- 

 ance to 50 degrees, in zero weather. 

 If temperatures above or below these 

 are required, the capacity of the boiler 

 will be materially changed. 



"The Superior 

 Boiler" 



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Superior Hachiiie & Bofler Wirb 



•40-S80 W. Superior StrMt 

 CHICAttO 



i?^> 



L-ifc- . n 



n How would you like to insure perfect 

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 the answer. Let us show you why. Write today. 



Address DEPT. "M" 



MOREHEAD MFG. CO., Detroit, Mich. 



166 



Mention Th> R«»Tlew wh^n yon writ*. 



■stabllsh«d 176S 



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1000 Ready Packed Crates 



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Can be shipped «t »n hour's notioe. 

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8205 



210 6>« •' 



144 6 " 



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 Waltham, :: Mass. 



Mfntli»u Tbp RPTtew when yon write. 



THOSE RED POTS 



ASK THE FLORIST 

 THAT USES THEM 



HARRY BALSLEY 



letrail Flower Ptt C«. DETROIT. MICIL 



Always mention the FlorUts' Review when 

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Price list and samples on application. 



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