176 



The Florists^ Review 



Afbil 6. 1922 



Greenhouse Heating 



SuBSCRiBKRS 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 

 helpful, also, to have a sketch showing 

 the location of the houses. 



USING 3-INOH BOIL£R FLUES. 



I have three houses to heat, one of 

 which is 60x150 feet; another is 20x100 

 feet and the third is 10x150 feet, with 

 glass only in the roof. The heating ap- 

 paratus will consist of a 35-horsepower 

 hot water boiler, with 3-inch boiler flues 

 as the piping in the houses. How many 

 runs will be required in these houses 

 to maintain 55 degrees, where the tem- 

 perature outside hovers around 10 de- 

 grees above zero in the winter? The 

 houses are detached, with cement walls 

 four feet high. G. H. B.— Md. 



Whether one flow pipe or a larger 

 number of small pipes should be used 

 for each of the houses, will depend upon 

 the arrangement of the houses and the 

 location of the boiler. 



If possible, use independent pipes, 

 both for the flows and returns, to each 

 of the houses. The house 60x150 feet 

 will either require one 7-inch flow pipe 

 or four 4-inch flows. In the house 24x 

 100 feet, use one 4-inch flow pipe, doing 

 the same in the house 10x150 feet. 

 This arrangement would require six 

 4-inch openings or one 7-inch and two 

 4-inch openings for the flow pipes, with 

 the same number for the returns. 



Five overhead flows and fifteen re- 

 turns will be required for the wide 

 house, if 3-inch boiler tubes for the 

 heating pipes are used, but if 4-inch 

 openings are selected, put in four 4-inch 

 overhead flows and sixteen 3-inch boiler 

 pipes as returns. 



In the house 24x100 feet, two 3-inch 

 tubes will be needed as flow pipes and 

 six tubes as returns. For the narrow 

 house only two flows and two returns 

 will be required. 



One flow should be placed upon each 

 side wall plate, and in the wide house 

 place two others under the purlins, 

 while with five flows one should be 

 placed under the ridge. 



In case the mercury only drops to 10 

 degrees above zero a few times during 

 the winter, good results could be ob- 

 tained with one 6-inch main flow or 

 three 4-inch flows, with returns of the 

 same size. But no reduction should be 

 made in the number of the pipes in the 

 coils. 



HEATING THREE HOUSES. 



I am sending you a plan of my range, 

 consisting of one greenhouse, 33x100 

 feet; a second, 15x50 feet; the third, 

 15x35 feet; a dwelling house, a boiler 

 room and potting shed. Together with 

 this I am submitting a plan for heating 

 this range which I evolved myself, and 

 which seems to me to be suitable for the 

 purpose. Will you kindly give this 

 plan a careful perusal, advising me as 

 to the feasibility of this plant The 

 large house has 7-foot side walls, with 



Battery of Kroeschell High Pressure Return Tubular Steam Boilers 

 with Suspended Setting. 



KROESCHELL 

 FUEL ECONOMY 



Higher production efficiency with lower 

 costs is what every business is striving 

 for nowadays. To the greenhouse man 

 this means more and better stock with 

 less operating expenses. 



Coal is the big item for the grower. 

 Each ton of coal he can save adds great- 

 ly to his profits. 



For fuel economy there is no better 

 boiler than the Kroeschell High Pressure 

 Steam Boiler. It burns the lowest grades 

 of coal, requires less, and gives more 

 heat. 



Kroeschell Boilers can be depended on 

 at all times. They insure conditions 

 necessary for raising the highest grade 

 stock. The profits of hundreds of grow- 

 ers have been increased by raising bet- 

 ter stock with less fuel in houses heated 

 by Kroeschell Boilers. 



EnBincerinc Advic* and Quota- 

 tions cheerfully submitted— 

 Let us know your requirements 



WHEN YOU BUY - QET A KROESCHELL 

 "THE BOILER OF UNEQUALED FUEL ECONOMY" 



KROESCHELL BROS. CO. 



444 W. Eri* Straet 



CHICAGO, ILL. 



