138 



The Florists^ Review 



Max 10, 1921 



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BOILER FLUES 



We make a specialty of bandlliv 

 carefully selected Boiler Flues. 1 

 Inches in diameter and other slziM 

 for R«tablnK Boilers. Also 

 riaes for greenhouse piping, etc. 



All flues are thorouirhljr cleaned 

 Inside and out, trimmed and are 

 ready for use. General sales agent 

 for Stuttle's Patent Olamp and El- 

 bow for Joining flues — no packing, 

 no leaks. New Standard Pipe and 

 all kinds of Greenhouse TlttlnKS. 

 Right prices and prompt shipment. 

 H. MCNSON 

 Est. 1898 Phone Soperior 672 

 1488 N. Wells St., Ohlmuro 



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Meatton Tlie BsTlew when yon write. 



Greenhouse Heating 



SxTBSCBiBERS are invited to wiite 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. 



FLX7E AND CHIMNET TROUBLE. 



My steam boiler is 3^^x11 feet, and 

 has a brick fire box beneath it, 3^x4 

 feet. The brick smokestack is fifty feet 

 high and has a 28-inch flue. 



Smoke and flames return through the 

 flues, and it seems to me that too much 

 coal is being burned. Is the grate sur- 

 face too large for the size of the boiler t 



H. G.— Wis. 



From the data furnished it is not pos- 

 sible to make more than an approximate 

 estimate of the capacity of the boiler, 

 but we judge it to be something over 

 forty horsepower. For such a boiler, we 

 would not consider the size of the grate 

 excessively large, although it would an- 

 swer if somewhat smaller. 



While it is desirable to have a chim- 

 ney of good height and of ample size, 

 it is not advisable to have it exces- 

 sively large. If the flue had one-half of 

 the area mentioned it would be suffi- 

 ciently large. If the draft is very strong, 

 a damper might be used to advantage. 



Nothing is said regarding the size of 

 the opening between the bridge and the 

 shell of the boiler. For a boiler of this 

 size it should be 400 to 450 square inches. 



A good formula for determining the 

 size of the flue and chimney is to have 

 the area of the flue one-sixth, and the 

 area of the chimney one-seventh to one- 

 tenth the area of the grate or slightly 

 more for small boilers, varying the fig- 

 ures alsQ^with the height of the chimney, 

 the kina of coal and the size of the 

 openings in the grate. 



PXPING A SEED HOUSE. 



I am enclosing a sketch of my seed 

 house, and I should like to know if the 

 amount and arrangement of pipe desig- 

 nated will heat the house when it is 15 

 degrees below zero. The boiler is six- 

 teen feet high, has an 18-inch grate and 

 is placed in a pit. The glass is 4x20 

 feet in the north roof, 6%x20 feet in 

 the south roof and 3x20 in the south 



THE KROESCHELL 



HOT WATER BOILER 



Here is the boiler that is making the most wonderful greenhouse 

 heating record in the world. Florists and gardeners who have 

 used other makes are constantly giving the KROESCHELL Qreen- 

 house boiler the highest praise. 



3,974,605 square feet of glass was equipped with KROESCHELL 

 Boilers during two recent years. You will find the KROESCHELL 

 in every State in the Union and Canada. The supremacy of 

 KROESCHELL Boilers is proved by their country-wide adoption. 



Every boiler made at our works is of the highest standard. Ha- 

 teiial— governed by Kroeschell specifications— the best that money 

 and brains can produce. Workmanship— the kind that isanin- 

 s;>iration to all boiler makers. Boiler efficiency- determined by 

 actual tests under working conditions. Boiler ratings— honest 

 and true blue— guaranteed actual working capacities. 



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The superiority of our boilers has resulted in the removal and 

 abolishment of hundreds of sectional cast-iron boilers. In every 

 instance KROESCHELL BOILERS give more heat with the same 

 piping and with less fuel. 



WHEN YOU BUY-QET A KROESCHELL 



KROESCHELL BROS. CO., 



444 W. Erio Strottt 

 CHICAOO, ILL. 



