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The Florists^ Review 



Apbil 1. 1920 



Greenhouse 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 boik- 

 era, 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- 

 ful, also, to have a sketch showing the 

 location of the houses. 



USING 1-INOH PIPE. 



We are erecting a John C. Mouinger 

 Co. greenhouse, 21x52 feet, running east 

 and west, with a boiler house at the 

 northeast corner. It will be seven feet 

 to the gutter. Three feet of the wall 

 is of tile and stucco. Forty-five inches 

 in the ends and the north side of the 

 house is glass. The south wall is wood 

 to the height of three feet. We are using 

 16xl8-inch lapped glass, with 12-foot 

 sashbars from gutter to ridge. 



We intend to use steam heat and want 

 to have a heat of 60 degrees in zero 

 weather. We also want to heat a cold- 

 frame at the south side of the house, 

 6x50 feet, to 45 degrees in zero weather. 



Will a 2-inch main overhead be suf- 

 ficient to feed coils under the benches, 

 taking a l'/4-inch line to coils, the coils 

 to be made of 1-incli pipe? We are 

 using branch tees at both ends of the 

 coils, taking the returns out of the 

 branch tees nearest the boiler. There 

 are air valves in the tees at the far 

 ends. We have four benches, two side 

 ones, thirty inches wide, and two center 

 ones, sixty inches wide. The returns 

 will be above the water line in the 

 boiler, making all radiating surface live 

 steam. How many 1-inch coils will be 

 necessary? C. & S.— 111. 



As I understand the description of the 

 house, each wall has forty-five inches of 

 glass below the level of the plates. To 

 heat such a house to 60 degrees in zero 

 weather, about 300 square feet of ra- 

 diation will be required. 



For this a 2-inch overhead main will 

 answer well and will readily heat the 

 house with sixteen 1-inch return pipes 

 in the coils. It is advisable to use five 

 of the returns under each of the side 

 benches and three pipes in coils under 

 each middle bench. The lower ends of 

 the coils should be two feet above the 

 water level of the boiler. The air valves 

 should be in the tees at the end of the 

 house nearest the boiler. For heating 

 the hotbed run a 1^/4 -inch pipe around 

 three sides of the bed. 



FOB STEAM HEAT. 



I am erecting a greenhouse, .".5x50 

 feet, of which I am sending you a 

 sketch. Will you outline a satisfactory 

 steam heating system? ^ly idea is to 

 extend this house later, but I should 

 like to know how large a boiler is nec- 

 essary to maintain 45 to 50 degrees in 

 zero weather. The boiler is to be only 

 large enough to heat the present house. 

 Hkw would the piping be best arranged, 

 using I'/fiiifh pipe? L. H. H. — O. 



Neither the letter nor the sketch af- 

 fords any information as to the amount 



KROESCHELL 



GREENHOUSE SPECIALTIES 



NOT 



CAST 



IRON 



NOT 



;asT 



IRON 



Mada In 20 Sixes 



HEATING and COOLING arr two branches of engineering on 



which we ■i>ecUlize for the ffreenboute trad*. 



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 heatinff and 



cooling systems for the most successful greenhouse men in this 



country. 



Tnbelefts Boiler 



KROESCHELL Boilers are making the most wonderful green- 

 house heating record in the world. Florists who have used 

 other makes are constantly giving the KROESCHELL the 

 highest praise. 



KROESCHELL: 



PIRt: St WATER TUBt 



VATCNTeO ■•■* 



BOILER^ 



The High Pressure Kroeschell— a highly eflScient unit for steam 

 plants 100 H. P. and over. 



13,468,520 sq. ft. of glass was equipped with KROESCHELL 

 Boilers during the past five years. 



Water Tube Steam Boiler 



When in need of refrigeration investigate the Kroeschell Sys- 

 tem its high eflBciency and low cost of operation place the 



Kroeschell System of Refrigeration in the foremost rank for 

 greenhouse use. Our system of Refrigeration and Cooling is 

 easily installed— perfect control of temperature and absolute 

 safety insured— no ammonia used for this system. 



Safety 



C02 



Economy 



No 



Ammonia 



Used 



Send for Boiler or Ice Machine Catalogues. 

 State which is wanted. 



BUY DIRECT-FACTORY TO USER PRICES 



KROESCHELL BROS. CO. ^ ^est Erie street, 



KROESCHELL BROS. ICE MACH. CO. Chicago, ill. 



