122 



The Rorists' Review 



DlCKMBIR 20, 1021 



Greenhouse Heating 



Subscribers are invited to write the 

 sditor of this department with regard to 

 jany details of greenhouse heating that are 

 not understood. When information is de- 

 8ire^ regarding the capacity of boilers, 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- 

 jtul, also, to have a sketch showing the 

 location of the houses. 



HEATING FOR SWEET POTATOES, 



; Can I successfully sprout sweet potato 



plants with a hot water system? It will 



be necessary to heat the president's 



Residence until well into May, which will 



lecessitate keeping the fires going. I 



im enclosing a sketch of the proposed 



)eds. B. A. A. — Ind. 



' The sketch shows a bench 4x125 feet, 

 with a depth of six inches and the bot- 

 tom raised one foot from the ground. 

 There are three I'/i-inch pipes running 

 lengthwise under the bench. It is as- 

 sumed that this is a regular greenhouse 

 bench. The three pipes shown would be 

 •ufficient to give the required bottom 

 neat, but about as many more will be 

 f eeded either under the bench or on the 

 •^all, for the growing of sweet potato 

 flants. For a house twelve feet wide 



there should be twelve 1%-inch pipes, 

 i'his merely takes into consideration the 

 imount of radiation needed, but in order 

 to obtain good circulation it will be ad- 

 visable to use 2-ineh returns with 2%- 

 inch flows. For instance, for a 10-foot 

 iouse, without glass in the side walls, it 

 >vould be advisable to use two 2iA-inch 

 flows and four 2-inch returns. Place one 

 Jow pipe on each side wall plate and the 

 Returns under the side benches. 



USING PIPE ON HAND. 



I have two greenhouses, each 42x100, 

 Running east and west, with 8-foot side 

 ^alls. The north side adjoins the serv- 

 ice building. The south side has five 

 feet of glass and three feet of wood, 

 ^he gable ends have concrete founda- 

 tions two and one half feet high. There 

 ^re fourteen raised benches four feet 

 wide. What arrangement of pipe would 

 it be advisable to use to heat these 

 houses with hot water to a temperature 

 6f 50 degrees? I have about 2,400 feet 

 •f 4-inch pipe, which I should like to use. 



H. H.— 111. 



The 4-inch pipe on hand will answer 

 quite well for heating the two houses. 

 It would be advisable to use one 4-inch 

 flow pipe for two 4-inch returns. This 

 will give eight coils of three pipes each, 

 of which the two lower ones will be re- 

 turn pipes. Place one coil under the 

 •outh bench and one under the bench 

 to the north. Arrange the other coils 

 under alternate benches. 



Give the pipes a rise of one inch in 

 twenty feet from the boiler. If a raised 

 expansion tank is used, it will be neces- 

 sary to place an air valve at the highest 

 point in each flow pipe, but, by placing 

 a galvanized tank holding forty gallons 

 at the end of one of the houses and con- 

 necting it with one of the flow pipea by 

 ineans of a 1-inch pipe, it wiU only be 



What you get 



when you get 



a Kroeschell 



A Steel Plate Boiler. 



A better boiler than a cast iron boiler. 



A boiler that will not crack. 



A boiler that will outlive any other. 



A boiler that burns the lowest grades of coal efficiently. 



A boiler that will give you complete control of temper- 

 atures in your greenhouses. 



A boiler that will save you many tons of coal every seasoi. 



A boiler that is used more for greenhouse heating than 

 any other boiler. 



A boiler at a reasonable, direct-from factory-to-user price 

 (we have no agents). 



A boiler that has proved itself the best for greenhouse 

 heating by years of satisfactory service in the largest 

 greenhouses. 



A boiler that is most highly praised by expert growers 

 everywhere. 



A boiler that will increase your profits by helping you 

 grow more and better flowers with less expense. 



And— 



You can get any size Kroeschell Boiler at once. Tel- 

 egraph or telephone your order at our expense. Long 

 distance phone Superior, 8680; ask for Greenhouse 

 department. 



KROESCHELL BROS. CO. 



444 W. Eri* ttre«t 



CHICAaO, ILL. 



