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140 



The Florists^ Review 



Mabch 25, 1020 



Greenhouse Heating 



SuBSCBlBERS 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 amoimt 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. 



OIL FOB HEATINa HOUSES. 



Because of the scarcity of coal, would 

 it be wise and economical to use oil for 

 fuel in a greenhouse? "What equipment 

 is needed to heat the house at ordinary 

 temperatures? I understand that oil, 

 after gasoline and kerosene have been 

 extracted, can be bought at a greatly 

 reduced price and, consequently, I 

 should be especially interested to know 

 about the installation and maintenance 

 of such a heating system. Are there 

 any heating plants of this kind in op- 

 eration? E. W. U.— Mich. 



In several eastern states, as well as 

 in the west and southwest, distillate is 

 generally used as fuel for heating 

 greenhouses, with quite satisfactory re- 

 sults. The economy in its use of course 

 depends largely upon the relative cost of 

 coal and oil. When one uses oil there 

 is a large saving in the expense of firing 

 and in the removal of ashes. 



The same boilers may be used, the 

 only change being the removal of the 

 grates, and often this is not done. 



The special equipment for the burn- 

 ing of oil depends in part upon the size 

 of the heating system. For boilers 

 heating 1,000 square feet of radiation, 

 or less, simple and comparatively inex- 

 pensive burners have been invented. 

 The barrel in which the oil was shipped 

 may be used as a reservoir or a tank 

 holding fifty to 100 gallons may be used. 

 Simply connect the reservoir with the 

 burner, which is placed on the grate in 

 the fire pot. With large greenhouse 

 ranges, for which oil is shipped in tank 

 ■cars, a tank wagon and a storage tank 

 which has the same capacity as the tank 

 cars should be provided. 



For such plants it is necessary to use 

 burners in which a jet of either steam or 

 air is furnished. An electric air com- 

 pressor will supply the air jet. 



The burner is placed just above the 

 level of the grate, with the end through 

 which the oil is sprayed just inside the 

 fire door, so that the jet of oil will be 

 well scattered through the fire pot. 

 There are several forms of oil burners, 

 the most common having the oil pipe in 

 the center. This is connected with the 

 oil reservoir and another pipe runs 

 either to a reservoir containing com- 

 pressed air or to a steam boiler. Both 

 pipes should have valves, so that both 

 the supply of oil and the steam or air 

 pressure can be controlled. 



HEATINO BY HOT-AIB FLX7E. 



I have a house 20x50 feet, standing 

 «a8t and west and protected at the west 

 end by the furnace room. The east end 

 and both sides are exposed. The sides 

 consist of three feet of cement wall 



KROESCHELL 



GREENHOUSE SPECIALTIES 



NOT 



CAST 



IRON 



Mada In 20 Sizes 



HEATING and COOLING are two branches of engineering on 

 which we specialize for the ffreeahouse 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 

 cooling systems for the most successful greenhouse men in this 

 country. 



Tubeless 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: 



riRtic WATER TUBt 



VATBMTeO law 



BOILER. 



The High Pressure Kroeschell— a highly efficient 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 e£5ciency 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. 



Send for Boiler or Ice Machine Catalogues. 

 State which is wanted. 



BUY DIRECT-FACTORY TO USER PRICES 



KROESCHELL BROS. CO. 

 KROESCHELL BROS. ICE MACH. CO. 



444 W«st Erie Street, 

 CHICAGO, ILL. 



