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88 



The Florists^ Review 



January 30. 1919. 



Greenhonse Heating 



Subscribers are invited to write the 

 Editor of this Department with regard to 

 any details of greenhouse heating that 

 are not understood. But please do not 

 ask The Review to make a choice of ap- 

 paratus for you. The greenhouse heating 

 equipment advertised in this paper is, we 

 believe, the best tor the trade to buy, and 

 each article the best in the special field 

 of its adaptation. 



STEAM FOB A SOUTHEBN EANQE. 



Enclosed is a sketch of our range. 

 You will note that it is located in north- 

 ern Mississippi. Please tell us how to 

 pipe it for steam, stating the right size 

 of the main return to the boiler, the 

 height and general location of the flow 

 pipes, the size of trap that should be 

 used, etc. We have a fire-box, high- 

 pressure boiler, of sixty horsepower. 



A. F. C— Miss. 



From the accompanying sketch we 

 learn that there are seven houses, of the 

 following sizes, beginning at the south 

 side of the range: Three houses 18x125, 

 one house 35x125, one 37x125, one 20x 

 100 and one 35x80. Except on the north 

 side of the house 35x80, where there 

 are also three feet of glass, and on the 

 west end of the three north houses, 

 where there is a potting shed, there is 

 a solid board wall four feet high on the 

 exposed sides and ends of the houses. 

 The only exception to this is at the east 

 end of the third house from the south, 

 where the boiler house is located. 



We are not certain as to how low an 

 outdoor temperature must be planned 

 for in northern Mississippi, but judge 

 that about 10 degrees above zero will 

 ordinarily be a minimum temperature, 

 although the mercury may occasionally 

 drop a few degrees lower. Nothing is 

 stated regarding the temperatures at 

 which the houses are to be kept, but we 

 shall consider, in making an estimate 

 of the radiation, that a temperature of 

 60 degrees is desired, indicating also 

 the number of return pipes that must 

 be omitted in case 50 degrees will suf- 

 fice. 



The boiler mentioned will answer 

 well for heating the range; in fact, a 

 50-hor8epower boiler would be amply 

 large. 



Although all of the houses are con- 

 nected, we would suggest the use of two 

 main supply and return pipes, using one 

 for the three houses that are eighteen 

 feet wide and the other for the remain- 

 ing houses. 



For the three south houses we would 

 take off a 3-inch flow at the boiler. 

 Carrying it into the north one of the 

 three houses, which is nearest the boil- 

 er, we would take off a 2-inch flow 

 and then reduce to 2%-inch. Carry 

 this into the middle house of the three, 

 and again take off a 2-inch suppljr pipe 

 for this house. Again redupe to 2-inch 

 and carry this into the first (south) 

 house, where it should be used as a 

 flow. 



Each house in the south group has 

 now been supplied with a 2-inch main. 

 These mains should be carried through 

 to the west end of the houses and should 

 be supported a foot or two below the 

 ridge. If for any reason this location 

 is not desirable, the 2-inch mains may 

 be divided and two l^^-inch flows used 

 in each house. These may be carried 



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The White House Greenhouses— U. S. Propagating Gardens, 

 Washington, D. C. 



HEATED BY KROESCHELL BOILERS 



The Conservatories of the Presi- 

 dent of the United States and the 



U. S. Propagating Gardens are 



located opposite the Washington 



monument at Washington, D. C. 



Over forty greenhouses are devoted 



to the growing of cut flowers, 



orchids, stove plants, tropical and 

 decorative stock, and all bedding and ornamental plants for the U. S. 

 Government buildings and grounds at Washington. 



A No. U KROESCHELL BOILER was installed in 1906 for the 

 high temperature houses. This boiler replaced a number of other 

 makes and made a remarkable record for fuel economy. 



UNCLE SAM'S IRON FRAME RANGE ERECTED IN 1910 

 IS HEATED BY KROESCHELL BOILERS. 



The Plant Introduction Garden of the United States Department 

 of Agriculture at Chico, California, is heated by No. 2 Kroeschell 

 Boiler and Generator System. 



In 1912 two No. 5 KROESCHELL BOILERS were installed for 

 the new range of the U. S. Department of Agriculture, at Garret 

 Park, Md. 



i 



The U. S. Government's new establishment, the Northern Great 

 Plains Field Station, at Mandan, N. Dakota, ordered a No. 7 KROES- 

 CHELL BOILER for the new greenhouse range erected in 1913, 



August, 1914, two more No. 11 KROESCHELL BOILERS were 

 ordered for White House Conservatories and U. S. Propagating Gar- 

 dens, Washington, D, C. 



WHEN YOU BUY- 

 GET A KROESCHELL 



"The Boiler of Unequaled 

 Fuel Economy" 



BUY DIRECT- 

 FACTORY TO USER PRICES 



KROESCHELL BROS. CO., 



444 W. Erie Street, 

 CHICAGO, ILL. 



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