134 



The Flonsts'' Review 



Apbil 20, 1922 



Greenhouse Heating 



ADDING RETURNS. 



I have two houses, 18^/^x110 feet, and 

 four houses, llVaxllO feet. All of the 

 houses are connected and there are no 

 partitions between them. The east wall 

 contains two feet of glass and the west 

 wall also contains two feet of glass. 

 The gables of the two large houses are 

 twelve and one-half feet high, while 

 those of the smaller houses are nine 

 feet high. The two large houses have 

 each three IV^-inch flows and three 1%- 

 inch returns under the benches, and the 

 four small houses have each two 1%-inch 

 flows and two 1%-inch returns under the 

 benches. The heating system consists 

 of a 25-horsepower boiler, located in a 

 10-foot basement. The houses run north 

 and south and are protected on the 

 north side by a shed. Will the heating 

 system above described heat the green- 

 houses to 60 degrees in zero weather? 

 If not, can you tell me how much it 

 will heat and how I can bring the heat 

 up to 60 degrees! A. E. S. — Ky. 



The sketch shows six houses with 

 walls four and one-half feet high. Four 

 of these houses are eleven feet four 

 inches in width and nine feet to the 

 ridge. The other two houses are 

 eighteen feet six inches wide and 

 twelve and one-half feet high. The out- 

 side wall on each side of the range has 

 two feet of glass. All of the houses arc 

 connected and there are no partitions. 

 The houses are all 110 feet long. For 

 the three narrow houses without ex- 

 posed walls the radiation is ample, but 

 it would be advisable to use an addi- 

 tional return for 60 degrees in the out- 

 pide narrow house. There is a slight 

 deficiency in both of the wide houses 

 knd one additional return should be 

 tised for the inside house, and two for 

 ihe outside house with one exposed 

 Wall. By carrying five pounds' pressure 

 In extremely cold weather, the present 

 radiation should give 60 degrees in zero 

 j^eather in all of the houses. 



I DECREASING RETX7RNS. 



I 



' I am mailing a sketch of my green- 

 iiouses. Can you give me any advice 

 yegarding the size of a hot water boiler 

 iind the piping arrangement necessary 

 to heat these houses? C. S. M. — Del. 



. The sketch shows one house, 10x21 

 feet, with side walls covered with 

 Qtucco. At the end of this house there 

 is another house, thirty-six feet long, 

 and, although no width is shown, it ap- 

 pears to be about one-fourth wider than 

 the other house, or twelve and one-half 

 feet wide. This latter house is nine 

 feet high, with 5-foot side walls. There 

 is three feet of glass in one of the side 

 walls and one end wall, below the plate. 



If coal is to be used as fuel, it would 

 not be advisable to place the boiler in- 

 side the greenhouse, as there is like- 

 ly to be trouble from coal gas, soot, 

 ashes, etc. 



The temperature desired is not stated, 

 but for 60 degrees about 350 square 

 feet of radiation will be needed, and 

 this amount of radiation will require 

 a heater rated for al)0ut 500 square 

 feet of hot water radiation. 



To heat the houses, run a 2%-inch 

 flow pipe overhead and with this sup- 



CHICAGO'S LEADING 



PLANT ESTABLISHMENT 



THE FAMOUS OECHSLIN PLANT (Quincy Street) 

 NKW rfMx*^«^^- °'' GLASS-HEATED BY KROESCHELL BOILERS. 

 NEW PLANT: Harlem Ave.-Heated by KROESCHELL BOILERS. 300 horsepower 



Mr. Oechslin-s arreenhouses are the show place of Chlcatfo, and visitors 

 are always welcome. Go and see this wonderful ran^e aid when lou 

 admire the perfection of the pla..ts and tht cleanliness of the place remem" 

 her to visit the boiler roo-rs and note that the name KROESCHELns 

 found on every one of the boilers. ivKur,oi,Mj!,i.u Is 



WHEN YOU BUY- 

 GET A KROftSCHELL 



THE KROrsOHfLL 

 SAVES COAL and LABOR 



Order Your Boiler Now 



Orders may be placed now for delivery during 

 summer or fall of 1922. You can save 5 to 

 10 per cent if you purchase a boiler during 

 this month. It will pay you to take advan- 

 tage of this offer. 



Oechslin's fine plants at the West-Town 

 Flower Show, Chicago. 



KROESCHELL BROS. CO., 



CHICAGO, ILL. 



444 W. Erie Street 



