126 



The Florists'" Review 



OCTOBBE 27, 1921 



give a slight surplus of radiating sur- 

 face and the circulation will be much 

 ketter than with twelve returns, espe- 

 cially if only three 2-inch flow pipes are 

 used. 



The boiler described will be amply 

 large for heating the two houses. Only 

 one expansion tank will be required, but 

 either an air valve or a half -inch pipe, 

 carried to the level of the top of the 

 expansion tank, will be necessary. 



When 2-inch heating pipes are used 

 for both flow and return pipes, it is safe 

 t« reckon that for 50 degrees in zero 

 weather two-fifths as many feet of pipe 

 will be require d as there arc square feet 

 •f glass in thy house. 



REPLACING OLD SYSTEM. 



I am confronted with a problem re- 

 garding the heating system now in use 

 in my range. There are two green- 

 houses, comprising a total area of ap- 

 proximately 2,300 square feet of glass. 

 One of these houses is heated by hot 

 water from a brick furnace and the 

 other by means of a flue from the same 

 furnace, running the entire length of 

 the house. The pipes carrying the water 

 to the flow and from the return pipes 

 are only 1-inch in diameter. There are 

 three 2-inch flow and six 2-inch return 

 pipes. The brick flue is in need of re- 

 pairs and I am thinking of replacing it 

 by a hot water system. Would it be 

 possible to use 2-inch pipe for a coil 

 thirty-six inches long and 2iA-inch or 

 3-inch pipe for flow and return pipes? 

 How many coils would be needed in the 

 furnace to heat the two greenhouses to 

 55 or 60 degrees in zero weather? 



J. H. M.— Md. 



While the connecting pipes now in use 

 are too small, it would be equally un- 

 wise to use 3-inch for the main flow and 

 return pipes; 2% -inch will be amply 

 large. It would be advisable to use six 

 runs of 2-inch pipe, thirty-six inches 

 long, for the coil in the furnace and un- 

 less the 2-inch flow pipes from the coil 

 can be connected directly with the flow 

 pipes on the plates it would be better 

 to connect a 2M!-inch main flow with the 

 furnace coil at flic nearest point possi- 

 ble. For a greenhouse 15x48 feet, you 

 need only use two 2-inch flow pipes on 

 the wall plates and seven 2-inch returns 

 under the side benches, placing four re- 

 turns in the coil on the exposed side of 

 the house. If the 2-inch pipe were not 

 on hand, it would be better to use nine 

 1%-inch return pipes in the coils. 



Virginia, Minn. — The city park com- 

 missioners have placed an order with the 

 Foley Greenhouse Mfg. Co., Chicago, for 

 an iron-frame greenhouse. 



TheKUNKER-KUTTER 



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Gra te 



Ihe KLINKER-KUTTER GRATE WORKf 

 67 West Maple Street Chicago, 111. 



Mpntlon Thp Review when yon write. 



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Manufacturers of 



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 3517-3S39 Shields Ave., CHICAGO, ILL. 



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0EGIN NOW to find eut about the "Morehead" System. Send right away 

 for the "Morehead" book for florists. In it you will find an easily understood 

 discussion of the boiler and condensation aiiestion from the practical 

 s andpoint of the grower of flowers. Write for this help TOLiAY. 



MOREHEAD MFG. CO. 



Dept. "M" 299 



DETROIT, MICH. 



PbI- July 27. I4J* 



fThe 

 llASCH 

 Nicotine 

 Sprayer 



works automatically. Connected to 

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 postpaid. P. RASCH 



Box 1291, A»)er<leeii. 8. Dakota 



Mention The Review when you write. 



<="^i?« 



len if 

 comes to 



vJreenKouses 

 come lo 



Hitckin^s & Co. 



Send for ^ Supply Book 

 New York Boston 



101 Park Ave, 294 Washington St 



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Write for catalogue and prices 



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GREENHOUSE BUILDERS 



We build all kinds of Greenhousei. Get our 

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1815 JohniM St. N. E., MINNEAPOLIS. MINN. 



Mention The Review when you write. 



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