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The Florists' Review 



June 12, 1919. 



Greenhouse Heating 



SuBSOBiBEBS 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 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 §nd general arrange- 

 ment of the greenhouses. It is often help- 

 ful, also, to have a sketch showing the 

 location of the houses. 



A DISMANTLED GBEENHOUSE. 



I have bought a dismantled green- 

 house of the size designated in the en- 

 closed sketch, with 500 feet of IVa-inch 

 pipe and the Boynton Patriot water 

 boiler, No. 424. I wish to know whether 

 a boiler of that capacity will heat the 

 house when the outside temperature is 

 30 degrees below zero. What is the 

 best way to install the piping! 



C. W. J.— N. Y. 



The sketch accompanying the letter 

 shows that the proposed house is 17x47, 

 with eighteen inches of glass in each of 

 the side walls. There will be three 

 benches, each four feet wide, and two 

 walks, each with a width of two feet. 

 The side walls have a height of four 

 feet. The letter does not indicate the 

 temperature desired, but if the house is 

 to be used for growing carnations and 

 similar crops, with no occasion for main- 

 taining more than 50 degrees in the 

 severest weather, we would advise about 

 400 square feet of radiation. 



We are not familiar with the rating 

 of the Boynton Patriot boiler, but for 

 a house of the foregoing size, under the 

 conditions mentioned, we would use a 

 boiler rated for at least 500 square feet 

 of radiation. While the size of the 

 grate for a boiler of that capacity 

 varies widely, we would prefer a diam- 

 eter of about twenty inches. 



The 500 feet of 1^-inch pipe will pro- 

 vide only 250 square feet of radiation 

 and 100 additional feet will be required, 

 besides the radiation which will be sup- 

 plied by the flow pipes, of which there 

 should be three 2-inch. Kun one of 

 these at each plate and the other two 

 feet under the ridge. The 600 lineal 

 feet of 1^-inch return pipes should be 

 arranged in three coils, one being under 

 each bench, and each coil should be con- 

 nected with one of the flow pipes at the 

 south end of the house. Thirteen runs 

 of pipe will be available, and we would 

 place five in each side coil and use three 

 returns in the coil under the middle 

 bench. 



The flow pipes may be connected di- 

 rectly with the boiler, or a 3-inch main 

 flow pipe may be used and the 2-inch 

 flows may be connected with it near the 

 north end of the house. Attach the 

 pipe leading to the expansion tank at 

 the highest point of the system and give 

 the flow pipes an even fall of three or 

 four inches. The same size and arrange- 

 ment of pipes should be used for con- 

 necting the returns to tk© Jjoiler as has 

 been suggested for the flows. The coils 

 should have a slope of about four inches 

 toward the north end of the house. 



If a temperature of 60 degrees is de- 

 sired in weather 30 degrees below zero, 

 we would use three 2ii-inch flow pipes 



■ QBaBaBaBaHaBDHDBaBaHDBaBaB 



: COMMERCIAL FLOWER : 



: GROWERS OF CHICAGO : 



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Greetings : 



THE post-war revival of business is a most healthful sign of conservative 

 optimism and is reflected in every institution that builds for the 

 present in order to provide for the future. 



THB Commercial Flower Growers of Chicago and adjoining localities 

 with whom it has been our privilege to transact business for some years 

 past, are among the progressive institutions showing unmistakable 

 signs of renewed energy after a period of somewhat abated prosperity due 

 to restrictions in coal and other essentials. 



WITH thn awakening of spring demands, the Cut Flower Grower conies 

 to the front with a united personnel in the name of the COMMER- 

 CIAL FLOWBR GROWERS OF CHICAGO and takes his place 

 among the reliable commercial organizations. 



KROBSCHELL BROS. CO.. though perhaps not the first, is nevertheless 

 not the least in its expression of a sincere welcomR to the newly organ- 

 ized association. Our past relation with the individual members is 

 a sure guarantee of the present and future co-operation in the advancement 

 of the organization. 



OUR relations with the Cut Flower Producer have made us privileged 

 students of his efforts for advancement and development. In a prac- 

 tical way we have been permitted to offer such aiH as our business 

 restrictions will permit and our association with the Cut Flower Grower has 

 been the most helpful and cordial at all times. 



TO the end that the new organization may realize in a full measure all its 

 objects and aims, Kroeschell Bros. Co. extends its sincere greeting and 

 cffers its practical aid in any effort to promote the general welfare and 

 prosperity of the Association. 



HEATING and COOLING are two branches of engineering on 

 which we specialize for the greenhouse trade. 



Over thirty years have been devoted by us to the construction and 

 designing of boilers and refrigerating apparatus. 



During this period we have furnished and installed heating and cool- 

 ing systems for the most successful greenhouse men in this country. 



When in need of refrigeration investigate the Kroeschell System— its 

 high efficiency and low cost of operation place the Kroeschell Sys- 

 tem of Refrigeration in the foremost rank for greenhouse use. Our 

 System of Refrigeration and Cooling is easily installed— perfect con- 

 trol of temperature and absolute safety insured — no ammonia used 

 for this system. 



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' KROESCHELL BROS. CO., ^^tn'Xii^SS.rs:'* ' 



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