70 



The Weekly Florists' Review. 



July «, 1911. 



FLORISTS' FUEL DIRECTORY 



Montgomery County Coal Co. 



OOAL OP miiiT 



S OOAL 



FISHKR BUILDING, CHICA.GO 



Mention The Keview when you write. 



Greenhouse Heating. 



Subscribers are invited to write the 

 editor of the Heating Department, de- 

 scribing their troubles or asking any 

 questions regarding the heating of green- 

 houses, the piping or boiler-room. But 

 please do not ask us to make a choice of 

 apparatus for you. Each boiler adver- 

 tised in The Review is a good boiler, and 

 the advertisers sell them on their merits. 



A SMALL WISCONSIN HOUSE. 



How many feet of 2-inch pipe will 

 be needed to heat a greenhouse 18 x 55 

 feet? The north wall is four feet high, 

 completely underground, and the south 

 wall is three feet high. The house is 

 seven feet high at the center. I want 

 a temperature of 55 degrees. Please 

 tell me, also, how large a boiler will 

 be required. F. W. S. 



If 2-inch pipe is to be used for both 

 flows and returns, two flows and eight 

 returns will be required. It could also 

 be done with one 2Vi!-inch flow and 

 eight 2-inch returns. There should be 

 no difficulty in heating the house with a 

 boiler having a 20-inth grate, or with 

 one that is rated at 450 feet of radiat- 

 ing surface. 



TWO COLORADO HOUSES. 



One of our houses is 20x99 feet. It 

 runs north and south, with the boiler 

 at the north end. The walls are cement 

 and are four feet high. The height 

 to the ridge is nine feet. We also have 

 one house 12x35, running west from 

 the boiler room, so that the two houses 

 have the form of an ell. This smaller 

 house has 5-foot cement walls and is 

 nine and one-half feet to the ridge, 

 with glass in one gable end. We have 

 an Ideal sectional hot water boiler, 

 with a rating of 1,650 square feet. The 

 larger house must have a temperature of 

 50 to 52 degrees; the smaller one, 55 

 to 60 degrees. An outside temperature 

 of 10 degrees below zero is cold for 

 us, and we have experienced only a few 

 nights of that temperature. Is our 

 boiler large enough? How should our 

 piping be done to get the best results? 

 We have had extremely unsatisfactory 

 results from the present system of pip- 

 ing. The expansion tank is three and 

 one-half feet above the highest point 

 of the piping. There is a Honeywell 

 generator on the system, but something 

 is radically wrong, as the small house 

 will not heat above 50 degrees in zero 

 weather. D. F. C. 



As the amount of radiation needed 

 in the houses will not be more than 

 1,150 feet, a boiler with a rating of 

 1,650 square feet of radiation should 

 be amply large. An excess of twenty- 



We Make a Specialty of Suppl^ng^ the Florists* Trade. 



MINERS AND SHIPPERS 

 of the FOLLOWING GRADES of 



SUNSHINE 



INDIANA BRAZIL BLOCK 



POCAHONTAS 



WEST VIRGINIA SPLINT 



COAL 



YOUGHIOGHENY nnd 

 SOUTHERN ILLINOIS 



Write as for names of satisfied customers, both as to quality and service, who have used 

 our coal for the past Ave to ten years. 



Write for our prices before placing your contract. 



R. C. WHITSEH COAL S MINING CO. 



Phone Harrison 4108 635-637 So. Dearborn St., CHICAGK> 



Mention Tbe Review when you write. 



HARRISBURG-FRANKLIN COAL CO 



lie 17 FISHER BUILDING, CHICAGO 



BLOCK COAL 



Inrare your supply by plaoinc orders now. 



MAXmUM 



OF 



HKAT 



MINIMUM 



OF 



WASTE 



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Florists' Pocahontas Coal 



Shipped anywhere from coast to coast. Let 

 us quote prices on delivery at your station. 



Write now. 



Nwtkeni SUtes CmI & NiuBg Ci. 



406 Fisher Bulldlngr, CHICAGO 



Phone Harrison 6753. 



Mention The Review whcn>vnu writ> 



five to thirty per eent should serve 

 every purpose. 



To heat the larger house, use three 

 2^-inch flow pipes, placing one in the 

 center overhead and the others on the 

 side walls. If the end of the house is 

 much exposed, carry the flow pipes on 

 the walls halfway around the ends and 

 start the returns at that point. For the 

 returi^s, nine 2-inch pipes should be 

 used. They can be arranged in three 

 coils, one of which should be under 

 each of the side flows and the other 

 under the middle bench. The flows 

 should be given a slight fall and the 

 expansion tank should be attached at 

 the highest point. With the piping 

 and arrangement suggested, there 

 should be no difficulty in maintaining 

 52 degrees when the outside tempera- 

 ture is 10 degrees below zero. For the 

 smaller house, use two 2%-inch flows 

 on the walls and seven or eight 2-inch 

 returns underneath. 



IN EASTERN KANSAS. 



I am building a greenhouse, 18 x 67 

 feet and eight feet to the ridge. The 

 walls are three feet high, with two 

 feet of glass. The house slopes to 

 the west. The ends are glass. I wish 

 to pipe for hot water, in such a way 

 that I can change to steam later if I 



SMITH, LINEAWEAVER& CO. 



COAL 



Aatkraelte, Bltaalaost, Coke asd Gaa Coal 



^t*U^l^,, Philadelphia 



Mention The Review when you write. 



desire. I have in view a new cast- 

 iron boiler, with a capacity of 750 gal- 

 lons and with three 2-inch outlets. 

 Would one 2-inch flow be enough to 

 heat the required amount of IVj-inch 

 returns, and how many returns would 

 be required to maintain a temperature 

 of 40 degrees when the outside tem- 

 perature is zero! J. B. M. 



For the house described use either 

 one 21/^-inch flow or two 2-inch flows. 

 A single 2-inch flow would be too small. 

 For the returns use nine liA-inch pipes 

 with a 2% -inch flow, and eight returns 

 if two 2-inch flows are put in. If 

 the flow pipes run downhill, it will be 

 a simple matter to change from a hot 

 water to a gravity steam system. 



EXTENDING THE COILS. 



We have a small house, thirty feet 

 long, which we wish to extend to the 

 'same length as our other houses, which 

 are sixty feet long. In extending the 

 coils, would it be satisfactory to sim- 

 ply make new coils and fasten them 

 onto the old ones by means of close 

 nipples? C. V. G. 



The question does not give any idea 

 of how the present coils are arranged, 

 or of the manner in which it is pro- 



