120 



The Florists^ Review 



November 27. 1919. 



fireenhoBse Heating 



Subscribers are invited to write the 

 editor of this department with regard to 

 any details of greenhouse heating that 

 are not understood. When information 

 is desired regarding the capacity of boil- 

 ers, or the amount of radiation required 

 for a greenhouse, the needed temperatures 

 should be stated in the inquiry, as well 

 as the amount of glass in the side walls, 

 and the dimensions and general arrange- 

 ment of the greenhouses. It is often help- 

 ful also to have a sketch showing the 

 location of the houses. 



IS HE HEATING ECONOMICALLY? 



Will you kindly tell me whether or 

 not I am burning too much coal? The 

 average coal consumption in my houses 

 is 16.65 pounds per square foot of glass. 

 Half the houses ate kept at a night tem- 

 perature of 60 degrees, the other half at 

 45 to 50 degrees, with the outside tem- 

 perature sometimes as low as 18 degrees 

 below zero. Some of my neighbors tell 

 me I am burning too much coal; others 

 Bay I am heating with more than ordi- 

 nary economy. What would be a fair 

 estimate? F. E. K. — Mo. 



The inquiry does not state the kind or 

 quality of coal, the size of the range or 

 the condition of the glazing, all of which 

 would have an appreciable effect on the 

 amount of coal used. We infer that 

 some form of soft or bituminous coal, of 

 the run-of-mine grade, is burned. In 

 that case, we would consider that the 

 heating is fairly economical for a range 

 of not more than 5,000 square feet, using 

 steam heat. With hot water the con- 

 sumption of coal should be reduced 

 twenty-five per cent, and a slight sav- 

 ing should also be made in larger ranges. 



HOT WATEB IS PREFERABLE. 



I am thinking of putting up a green- 

 house, about 25x50, and should like a 

 little advice from you. My residence is 

 26x26 and is heated by a one-register, 



gipeless furnace in the center of the 

 asement. Would it be practical to in- 

 stall a steam or hot water boiler, ar- 

 ranging it to take the place of the pipe- 

 less furnace without changing the hot 

 air register or the cold air intake? My 

 plan would be to utilize the heat raaiat- 

 ing from the outside of the furnace for 

 the residence, while conducting the 

 steam or hot water to the greenhouse, 

 which will be immediately south of the 

 residence. I do not suppose such a 

 boiler would furnish enough hot air 

 through the one register to heat the 

 residence, but it is my idea that this ar- 

 rangement might be sufficient in mild 

 weather and that a steam or hot water 

 radiator could be installed for addi- 

 tional heat in severe weather. 



Is it essential that a greenhouse run 

 east and west, or would one of the size 

 mentioned be satisfactory if run north 

 and south? On account of other build- 

 ings, more space will be available if the 

 house is run north and south. Which 

 system, steam or hot water, will be 

 preferable? C. R. D. — Ind. 



It will. not be feasible to use a steam 

 or hot water heater in the place of the 



Eipeless hot air furnace. While some 

 enefit would be secured from the radia- 

 tion furnished by the outer wall of the 

 boiler, it would not be more than the 



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■KROESCHELL BOILERS: 



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Kroeschell Tubeless Boilers 



It will pay you to consider the advantages of KROESCHELL 

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The high safety factor of KROESCHELL BOILERS eliminates 

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Successful greenhouse owners everjwhere insist upon KROE- 

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 costs by burning the cheapest grades of soft coal. 



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