118 



The Rorists' Review 



AUGUSI 11. li»21 



BUY 



COAL NOW 



Best Grades for the Florist 



Prices Unusually Reasonable 



THE GREENHOUSE COAL CO. 



604 S. Dearburn 8t., CHICAGO, ILL. 



Greenhouse 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 sunount 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. 



THREE FLOWS NEEDED. 



I have just l)uilt a small greenhouse, 

 15 X 30 feet. Tho house extends north 

 and south and lias twenty-four inches 

 of glass on oacli side and forty inches 

 (if glass in the front, or south end. It 

 is twelve foot to tlie ridge and about 

 ("iglit feet to the gutter. 1 want to keep 

 it at 60 degrees wlien it is 10 below zero 

 outside. 1 coiiteniplate using 1%-inch 

 pipe for returns. Will you advise me 

 as to the number of flows and returns 

 and the proper sizes to use? 



A. R. S.— Mont. 



To heat the greenhouse described, run 

 throe 2-incli pipes lengthwise of the 

 house as flows, placing one on each side 

 wall plate and the other under the 

 ridge. Connect each of these flow pipes 

 with three IVL-inf'h returns arranged 

 in coils under the benches. 



GETTING A DRAFT. 



I I have three greenlionses, each 21.xl00 

 ' feet, and one lean to, IGxlOO feet, com- 

 ) ])rising !).20O scpiare feet of glass. The 

 s total length of pipe for heating is as 

 ' follows: Returns, ;^,?.00 feet of iy2-inch 

 ' jind 900 feet of 1-inch iiipe; feeds, 600 

 feet of 2yo-inch and 100 feet of 3-inch 

 pipe. The heating system is hot water 

 from a converted steam boiler, which has 

 forty-three flues, each sixteen feet long. 

 The grate is 4x4 feet. What height ami 

 diameter should the smokestack be to 

 obtain the proper draft? At present I 

 liavc a brick stack, twenty-seven inches 

 square and thirty-six feet high, but it 

 lias not been giving me the proper draft. 

 As a matter of fact, we have been un- 

 able to burn the steam coal regularly 

 used in greenhouses. Any information 

 j-ou can give will be appreciated. 



T. M. C— Colo. 



While it is desirable to have a stack 

 of a somewhat greater height than thir- 

 ty-six feet for a boiler of the size men- 

 tioned, the cross-section area of the 

 flue is fully twice as large as is gener- 

 ally used. Ordinarily, for boilers of 

 this size, it is considered that a flue 

 with an area one-seventh the area of 

 The grate is suffciently large. The area 

 of the grate is 2,304 square inches, and 



KROESCHELL 

 BOILERS 



Kroeschell Boilers have a long-estab- 

 lished reputation for being the best boil- 

 ers for greenhouse heating. Their effi- 

 ciency has been proved by years of 

 satisfactory service in large and small 

 ranges everywhere. 



Kroeschell Boilers are selected by the 

 most careful buyers in competition with 

 all other types of boilers. Their effi- 

 ciency and capacity are completely be- 

 yond any other boiler. 



The increasing popularity of Kroeschell 

 Hot Water and Steam Boilers is keeping 

 our factories going at full force, filling 

 orders coming from all corners of the 

 country. 



If you have a heating problem, do not 

 wait. Tell us about it; we will be glad 

 to show you how it can be solved best 

 with the least expense. 



NOT 



CAST 



IRON 



NOT 



CAST 



IRON 



Ensineerine Advice and Quota- 

 tions cheerfully submitted— 

 Let us knew your requirements 



WHEN YOU BUY - GET A KROESCHELL 

 "THE BOILER OF UNEQUALED FUEL ECONOMY" 



KROESCHELL BROS. CO., 



444 W. Eri« Streat 

 CHICAGO, ILL. 



