90 



The Florists^ Review 



May 10, 1917. 



H. n. UNEAWEAVER & CO., Inc. 



^'"iiu"" COAL 



BITUMINOUS %^ \^ f^ ■■ 



West End Trust Building. PHILADELPHIA 



17 Battery Place, NEW YORK 

 Nutting Building LEBANON. PA. 

 Mention The Review -when you write. 



Greenhouse Heating. 



Subscribers are invited to write the 

 Editor of this Department with regard to 

 any details of greenhouse heating that 

 are not understood. But please do not 

 ask The Eeview to make a choice of ap- 

 paratus for you. The greenhouse heating 

 equipment advertised in this paper is, we 

 , believe, the best for the trade to buy, 

 and each article the best in the special 

 field of its adaptation. 



PIPED BY INEXPERIENCED MEN. 



I have a greenhouse 21x45, set on a 

 grout wall. Under the house the ground 

 ■is excavated to a dei)th of two and one- 

 half feet. The top of the wall is even 

 with the outside grade level and the sill 

 of the greenhouse is placed upon this 

 wall. In the south side, above the grout 

 wall, are two and one-half feet of glass 

 and the ends also are glazed. The green- 

 house is a lean-to. The north wall is of 

 boards and is sixteen feet high. 



As the greenhouse was built by inex- 

 perienced people, I have had a great deal 

 of trouble with the heating system. The 

 boiler is a Furman sectional hot water 

 heater. All the pipes are 2-inch. The 

 flows have an uphill grade and the re- 

 turns run downhill. The floor of the 

 boiler room is only two feet lower than 

 the greenhouse and that brings the top 

 of the boiler about two feet above the 

 low^est returns. The boiler room is at 

 the north side of the greenhouse. The 

 piping is arranged as follows: 



Three flows enter the greenhouse at 

 the nortli side, about in tlie middle, and 

 run to tlie east end, then to one of tlie 

 purlins and finally to tlie west end. 

 There each one of the flows is run down 

 and connected with three returns. Six 

 of the returns run to the south wall, 

 tlicn to tlie east wall and tlien to the 

 northeast corner, where tlicy all enter 

 one pipe wliich goes to the boiler. The 

 other three returns run to tlic north wall 

 and then along half the length of the 

 wall, where they are connected with one 

 pipe leading to the boiler. The flows 

 are all carried up to within about 

 oigliteen inches of the roof and tlie re- 

 turns are below the grade level. 



What can I do to improve this heat- 

 ing system? Would a generator do any 

 good, or would it be advisable to use a 

 closed expansion tank instead of the 

 present open-tank system? The expan- 

 sion tank is at the highest point of the 

 system. Or would the best plan be to 

 lower the boiler? What changes would 

 result in the greatest benefit witli the 

 least expenditure of time and labor? 

 There are 200 feet of flows and 600 feet 

 of returns. The boiler capacity is 750 

 square feet of radiation; 2,r!50 square 

 feet of exposure at 45 degrees and 1,750 

 at 60 degrees. The former owner, who 

 liad the house in a different situation, 

 grew lettuce. F. H. — Mass. 



So far as we can judge from the de- 

 scription given, the house contains about 

 the right amount of pipe for a lettuce 





•"'"'" tit 



\iVNV\ 



IMICO 



Hot Water Bolters 



Made by 



Illinois Malleable Iron Co. 



1801-1825 Diversey Boulevard 



CHICAGO 



Are noted for COAL ECONOMY and 

 good results generally. 



SEND FOR CATALOGUE 







# 



BOILER FLUES 



We make a specialty of handling 

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 house piping, Gutter Posts, etc. Also, 

 we make a specialty of flues for 

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 General Sales Agents for Stuttle's 

 Patent Clamp and Elbow for joining 

 flues— no packing, no leaks. New 

 standard pipe and all kinds of green- 

 house fittings. Right prices and 

 prompt shipment. 



H. MUNSON 



Est. 1898 Phone Superior 872 

 1363 N. Clark St. Chicago 



=0= 



:0 



Mention The Review when yon write. 



Hansell Rocker Grates 



Are best for greenhouse use. 

 Write for particulars. 



HANSELL GRATE CO. 



654 Railway Exchantfe Bldg., CHICAGO 



Mention The Review when yon write. 



SET YOUR BOILER RIGHT 



We make a specialty of all klnda of fire-brick 

 work. No order Is too large, and the smallest order 

 receives the same careful attention. Let us call on 

 you. 



Estimates cheerfully furnished. 



PETER KNOWE & SON 



316 Chamber of Commerce Bldg. 

 133 West Washington Street. CHICAGO, ILL. 



Phone Main 3766 



Mention The Review when you wrlf . 



STEEL 



RgT URK 

 TDBDLAR 



BOILERS 



Johnston Hooting Co. 



131 L 26th StTMt NEW YORK 



Mention The Review when you write. 



or carnrvtion temperature, hut, in addi- 

 tion to having tlic top of the boiler be- 

 low tlie returns, we would certainly run 

 tlic flow jiipes downhill, especially when 

 there is any possibility of a poor circu- 

 lation, and we would have the circuit as 

 short as possible. If it is not convenient 

 to lower tlic boiler, wc would use a 

 closed system and would raise the flow 

 ]>ipes so that they would run downhill. 

 \Ve would also carry the returns on the 

 walls as high as possible. 

 • Wc do not understand what is meant 

 by 2,3r)0 stpiare feet of exposure at 45 

 degrees and 1,750 at 60 degrees. As 

 nearly as wc can compute it, there are 

 about 2,400 square feet of exposure, of 

 which 720 srpiarc feet are in the north 

 wooden wall, so that altogether it would 

 be equivalent to 1,850 square feet of 

 glass. 



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 = Naturally Grown = 



= To STATE that the irregular- S 



E Ity of temperature in the E 



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s your roses is simply another s 



= way of saying that E 



E there's something wrong with E 

 E the drainage treatment. E 



E The "Morehead" book will help E 

 = you. Write for your copy TO- S 



S ^^Y- 1 



E MOREHEAD MFG. CO. E 



S Dept. "M" DETROIT, MICH. E 



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Mention The Review when yon write. 



HIGHEST PRICED and CHEAPEST 



BOILERS MADE 



GiBLiN Greenhouse Boilers 



GIBLIN & CO. 



100 Broad Street. UTICA, N. T. 



Let us tell you about them. 



Mention Tlia Perlew when yon write. 



Pipe and Tubes 



ALL SIZES CUT TO SKHCH 



Philadelphia Second Hand Pipe Supply 



1003 N. 7th SL, PHIUDELPHIA, PA, 



Montion Tlie Review wlipn you write. 



Full Weight Wrought Iron 

 and Spollorlzed Steel Pipe 



(Doils, Bends, Railings, etc, made to Sketch 



FORD & KENDIG CO. 



;ItS"«'^S^5ol*rt?let. PHlLADELPfflA 



Mention Tlic Review wlieii you write. 



If we were to plan the piping for 

 the house in question, we would use 

 either one 3-inch flow or three 2-inch 

 flows, carried on the north wall to 

 the west end of the house. With the 



