148 



The Florists^ Review 



April 28, 1921 



CreenhoBse 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- 

 en, or the amount of radiation required 

 for a greenhouse, the needed temperatures 

 should be stated in the inquiry, as well 

 aa 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. 



BADIATION AND PIPE NEEDED. 



Having noticed in a previous issue 

 answers to questions relating to green- 

 house heating, I write to ask you what 

 would be the necessary radiation in a 

 greenhouse 21x72 feet, running east 

 and west, with a service room at the 

 west end, in the basement of which 

 is a boiler. The side walls are five and 

 one-half feet, thirty-one inches of 

 which are glass. The rafters measure 

 twelve and one-half feet in length. 

 W. L. N.— Neb. 



About 800 square feet of radiation 

 will be needed to heat the greenhouse 

 described, but it will be well to use a 

 boiler rated for approximately 1,000 

 square feet of radiation. This will re- 

 quire a grate about twenty-five inches 

 in diameter. 



To heat the house, it would be ad- 

 visable to use three 2y2-inch flow pipes, 

 carrying one on each side wall plate 

 and the other three feet below the 

 ridge. 



For the return coils run four 2-inch 

 pipes on each side wall and five under 

 the middle bench. Give all pipes a 

 slight slope and, unless the flow pipes 

 are connected to a 4-inch main flow, do 

 not fail to connect the highest point 

 of each flow pipe with the pipe leading 

 to the expansion tank. 



DWEIiLING AND GREENHOUSE. 



I am building a greenhouse, connect- 

 ing it to my dwelling, which is a 2-story 

 brick structure \^ith basement. The 

 greenhouse floor will be about two feet 

 above the basomcnt floor, but I can 

 make a pit for the furnace. The green- 

 house will be 28x36 feet, with 6-foot 

 eaves. There will be four feet of con- 

 crete and two feet of glass on the 

 northeast and northwest and three feet 

 of concrete on the southwest end and 

 southeast side. The workroom, 6x28 

 feet, will be of wood. 



As I intend to use a hot water sys- 

 tem, I should like to know what size of 

 furnace and pip^s I shall need and how 

 to install them in order to heat the 

 greenhouse and my dwelling to 60 de- 

 grees, with zero temperature outside. 

 Whore should the expansion tank be 

 located? Shall I need two tanks? 



M. M. D.— Ind. 



To heat the greenhouse to 60 degrees 

 and to supply radiation to the amount 

 of 400 square feet in the dwelling, a 

 boiler with a rating of 800 square feet 

 of hot water radiation will be needed. 

 This would have a grate approximately 

 twenty-four inches in diameter. It 

 would be advisable to run a 3-inch over- 

 head main to the farther end of the 

 greenhouse, and drop down a 2% inch 

 supply pipe on each side of the door. 



KROESCHELL BOILERS 



will put high temperatures into your heating lines 



Kroeschell Tubeless Boilers 



It will pa.v .vou to consider the advantages of KROESCHELL 

 BOILERS for Hot Water or Steam no matter how large or 

 small the size of your establishment. 



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 same piping with less fuel. 



KROESCHELL BOILERS have no bulky, soot-accuniulating 

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 pensable to cleaning boilers with complicated and tortuous back 

 and forth fire passages. 



NOT 

 CAST 

 IRON 



NOT 

 CAST 

 IRON 



The high safety factor of KROESCHELL BOILERS eliminates 

 the danger of cracking and break-down risks. 



Successful greenhouse owners everywhere insist upon KROE> 

 SCHELL BOILERS because they are dependable and economical 

 —you get better and longer service— you can reduce your heating 

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The supremacy of KROESCHELL BOILERS 



is proven by their country-wide adoption. 



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MAKE SURE YOU GET A KROESCHELL 



KROESCHELL BROS. CO., 



444 W. Erie Street 

 CHICAGO, ILL. 



