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86 The Florists'' Review •»""■ *^' i»"» 



H. H. LINEAWEAVER & CO., Inc 



COAL 



ANTHRACITE 



and 

 BITUMINOUS 



West End Trust Building. PHILAI^ELPHIA 



17 Battery Place. NEW YORK 



Nutting Building. LEBANON, PA, 



Mentton The Rcrlew 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 Keview 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. 



THBEEINCH PIPE FOR STEAM. 



Your replies to our inquiries have 

 been so useful to us in the past that 

 I wish again to ask your heating ex- 

 pert a question. We have a lot of 3- 

 inch standard pipe and not enough of 

 smaller sizes. Could we use the 3-inch 

 pipe to advantage for the coils under 

 the benches? We use steam and the 

 houses are 150 feet long. 



G. E. Y.— Kan. 



In heating with steam, 1^-inch pipe 

 is preferred for the coils, not only on 

 account of the first cost of pipe and 

 fittings, but also because of the ef- 

 ficiency of the heating surface. Yet, if 

 one has the pipe on hand and it cannot 

 be sold or exchanged to advantage, it 

 might be well to use 3-inch pipe rather 

 than buy the smaller size. One linear 

 foot of 3-inch pipe should heat six 

 square feet of glass to a temperature of 

 60 degrees, or eight feet to 50 degrees, 

 when it is zero or a little below out- 

 side. 



MORE FLOW PIPES NEEDED. 



I have a greenhouse 20x50, which 1 

 am now extending so it will measure 

 20x76. The blue print herewith en- 

 closed shows the present plan of heat- 

 ing, which has given good satisfaction, 

 but I should like to have your heating 

 expert give me a little information with 

 reference to extending the one 214-inch 

 flow pipe. Perhaps it would be advisa- 

 ble to add another flow, running both 

 flows into the house at the same height 

 as the present one, then dropping them 

 and placing one under each purlin. I 

 should like to drop them clear down to 

 the eave plates instead of the purlins, 

 but do not know whether that would 

 be practical. J. I. H. — Mich. 



Although it is stated that the present 

 system, with one 214-inch overhead flow 

 and with fourteen 2-inch returns, ar- 

 ranged in two coils under the side 

 benches, gives good results, I feel con- 

 fident that, for the house 20x50, it 

 would have been better to use two or 

 even three flow pipes. There are in the 

 system about 500 square feet of radiat- 

 ing surface, and, although this would be 

 the maximum, it would not be excessive 

 for one 2 14 -inch flow pipe, were there 

 only six or even eight returns, but it 

 would be preferable to use at least one 

 additional flow pipe when as many as 

 seventeen returns are to be supplied, es- 

 pecially in an open-tank system. 



If the house is to be extended twenty- 



WHIN YOU BUY-QKT A KROKSCHKLL 

 ■THE BOILER OP UNEQUALED FUEL ECONOMY' 



3i. 



The immense amount of direct self-cleanins heating surface 

 and the thin vertical waterways cause this type of boiler con- 

 struction to heat water quicker than any other form of boiler. 



Hundreds of Florists' Review readere are using the 

 Kroeschell Boiler and mighty is their praise. The 

 past year has brought an enormous number of new 

 customers who have seen our boiler in operation at 

 other places. We attribute the large sales of the 

 1914-1915 season to the good work the Kroeschell 

 Boiler is doing everywhere. With our policy — "the 

 customer's interest first" — perfection of, construc- 

 tion — factory-to-user prices — honest and "true blue" 

 boiler ratings — you simply cannot lose. 



PLACE YOUR ORDER-DO IT TODAY 

 TELEPHONE OR TELEORAPH A1 OUR EXPENSE 



BUY DIRECT-FACTORY-TO-USER PRICES 



KROESCHEIJ. BROS. CO., m^^.'Sl'.^r** 



