106 



The Florists* Review 



October 2. 1919. 



Greenhouse Heating 



SuBSCRiBEKS are invited to write the 

 Editor of this Department with regard 

 to any details of greenhouse heating 

 that are not understood. When infor- 

 mation is desired 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 til* side walls,- and the dimensions 

 and general arrangement of the green- 

 houses. It is often helpful, also, to 

 have a sketch showing the location of 

 the houses. 



COAL COST TO DOUBLE? 



A large number of growers have ended 

 their interest in coal market rumors by 

 filling their bins with fuel enough to 

 meet the season's requirements, but 

 there are still a good many who find 

 cause for anxiety in the report of a 100 

 per cent increase in the price of coal. 

 The present cost of coal to the con- 

 sumer will be doubled if demands formu- 

 lated by the United Mine Workers are 

 allowed, a statement issued last week by 

 the National Coal Association declared. 

 The estimate of the effects of the de- 

 mands of the miners said they would 

 add a billion dollars to the cost of coal 

 during the coming year. 



"The miners have announced tbeir 

 intention of striking November 1 unless 

 their demands are granted, and that is 

 what their demands mean, in dollars and 

 cents," the statement says. 



A 6-hour day, the statement continues, 

 means approximately five hours in the 

 working places, while the 5-day week on 

 that basis means an actual reduction 

 from forty-eight hours a week, the pres- 

 ent schedule, to about twenty-five hours 

 a week. 



"On top of this they demand a sixty 

 per cent increase in wages," the state- 

 ment says. ' ' The effect of these de- 

 mands, if granted, would be to almost 

 double the present cost of mining coal." 



PIPING SEVEN HOUSES. 



We have two houses 25x100, three 

 20x100, one 20x50 and one 10x50 feet. 

 Please let us know what size of flow and 

 return pipes are needed to heat these 

 houses to 60 degrees in zero weather. 

 The top of the boilers is five feet below 

 the floor of the houses. 



L. A. E. & S.— O. 



The inquiry does not indicate whether 

 ior not there is any glass in the walls, 

 or whether steam or hot water will be 

 used for heating the houses. The cost 

 of installing a steam heating system will 

 be considerably less than for a hot water 

 system. On the other hand^ a marked 

 saving both in the amount of coal used 

 and in the work of firing may be ob- 

 tained by using hot water. 



To heat the houses to 60 degrees with 

 steam, we should arrange the piping as 

 follows: For the houses 25x100, we 

 should use one 2%-inch flow pipe and 

 ten 1%-inch returns; for the houses 

 20x100, one 2%-inch flow and eight 1%- 

 inch returns; for the house 20x50, one 

 2-inch flow pipe and eight 1^4 -inch re- 

 turns, and for the house 10x50, one 1%- 

 inch flow and four returns. 



To heat these houses with hot water, 

 we should use the following amount of 

 radiation: For houses 25x100, three 2%- 



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: KROESCHELL : 



■ GREENHOUSE SPECIALTIES " 



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Made in 20 Sizes 



HEATING and COOLING are two branches of engineering on 



which we specialise 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 ha\ e furnished and installed heating and 



cooling systems for the most successful greenhouse men in this 



country. 



Tubeless Boiler 



For Hot 

 Water 



or 

 Steam 



KROESCHELL Boilers are making the most wonderful greenhouse 

 heating record in the world. Florists who have used other makes 

 are constantly giving the KROESCHELL the highest praise. 



KROESCHELL: 



NRtii WATER TUBe 



vATCMTeo laix 



BOILER. 



The High Pressure Kroeschell— a highly efficient unit for steam 

 plants 100 H. P. and over. 



13,468, 320 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 System- 

 its high efficiency 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— per- 

 fect control of temperature and absolute safety insured— no am- 

 monia used for this system. 



Safety 



CO, 



Economy 



No 



Ammonia 



Used 



Send for Boiler or Ice Machine Catalogues. 

 State which is wanted. 



■ BUY DIRECT-FACTORY TO USER PRICES 



° KROESCHELL BROS. CO. 



Q KROESlHELL BROS. ICE MACH. CO. 



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444 W. Erie Street, b 

 CHICAGOp ILL. g 



