126 



The Florists^ Review 



January 15, 1920. 



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 tt>mperatures 

 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. 



SIX CONNECTED HOUSES. 



Please tell me the number of flows 

 and number of returns that I shall need 

 for each of six houses, 24x60 feet. There 

 are 6-foot gutters and no partitions 

 between the houses. The boiler room is 

 on the east side. I intend to use 21/^- 

 inch and 3-inch ])ipe. The boiler has 

 about fifty flues. I shall use hot water. 



A. E.— Wash. 



To get a temperature of 55 degrees 

 with an outside temperature of zero, 

 ^t would be well to use two 3-inch flows 

 and eight 2i/^-inch returns in each of the 

 houses, except for the outer houses in 

 the range, for which an additional re- 

 turn would be required if there is any 

 glass in the exposed walls. If 10 de- 

 grees above zero is the minimum out- 

 door temperature, one or two returns in 

 each house might bo omitted. 



DECREASING SOOT. 



I have at my greenhouse a horizontal 

 boiler, 4%xl4 feet, which I intend to 

 move arid reset. Please give me sug- 

 gestions as to setting which will help 

 to cut down the amount of soot. 



W. M. E.— Can. 



Soot is, of course, the unconsumed 

 carbon of the coal and, to lessen the 

 amount of soot, the setting and the 

 handling of the boiler should be such as 

 will favor the perfect combustion of the 

 coal and reduce the loss of carbon. 



The size of the grate and the width of 

 the openings in the grate bars should be 

 adapted to the grade of coal used and, 

 before determining the exact area of the 

 grate, the amount of radiation should 

 be known. A small, brisk fire will pro- 

 duce less soot than one on so large a 

 grate that it has to be checked. If it is 

 to be used practically up to its ca- 

 pacity, a grate with about fourteen 

 square feet for steam lump coal and 

 sixteen square feet for run-of-mine 

 should be used for the boiler described. 



The draft of the smoke pipe and stack 

 will also have much to do with the 

 amount of soot. The boiler should be 

 set as close to the chimney as possible 

 and, for the size mentioned, a stack 

 about twenty inches in diameter would 

 be best. If there are no tall buildings 

 or trees in the vicinity, a stack forty 

 feet high will answer. If the stack is 

 made fifty feet high, the diameter may 

 be reduced to eighteen inches. 



A good fireman can also do much to 

 lessen the amount of soot and increnSE^ 

 the economy of heating. By kee^rilig a 

 clean fire and removing the cinders from 

 the ash pit so that the draft will not 

 be chocked, a great deal along this line 

 can be done. In firing, spread the coal 

 in a thin, even layer over the surface, 



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• CHICAGO r 



■ January 21-22 ^ 



?ALL ABOARD! ETd".';^^' 



° CONVENTION and EXHIBITION ^ 



AMERICAN CARNATION SOCIETY " 



AND 



ILLINOIS STATE FLORISTS' ASSOCIATION 



LaSalle Hotel 



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ivywEET the men you read about, get acquainted with the Trade's 

 I^HI Leaders, see the new Carnations and talk to the Growers of the 

 prize-winners; learn how they do it. Quality counts. 



IHICAGO 

 BIDS YOU WELCOME! COME! COME! COME! 



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TTEND the TRADE BANQUET. 

 Dancing and Entertainment. Excellent Speakers. 



EE the great Wholesale Cut Flower Market and the big Green- 

 house Establishments. 



ISI 1 the KROESCHELL Boiler and Ice Machine Works. Meet 

 the KROESCHELL Engineers, Heating and Cooling Experts. 



Send for a Kroeschell Carnation Measure 





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