168 



The Florists^ Review 



March 30. 1922 



Greenhouse Heating 



BEABRANOING OLD SYSTEM. 



I have one greenhouse 30x150 feet, 

 which is behind a hill and partly pro- 

 tected by woods. This house has a 

 2-foot concrete wall on the north side 

 and four feet of glass on the south side. 

 The west end is three-quarters glass. 

 The ridge pole is twelve feet high. In 

 addition to this house, there is a second 

 house, 16x64 feet, the floor of which is 

 eight feet higher than that of the large 

 house. There is a 6-foot space between 

 the two houses, but the walls of the 

 second house are the same as those of 

 the big house. The ridge pole of the 

 second house is nine feet high. The 

 boiler with which I expect to heat this 

 range is a Lord & Burnham 5-section 

 boiler, with grates 3x4 feet. This boiler 

 is located in the middle of one end of the 

 big house and has a 4-inch main, branch- 

 ing to each side wall of the house. The 

 floor of this house has a 2i/4-foot pitch 

 and the lower side has four 2-inch flows 

 and four 2-inch returns. The upper side 

 is fitted with three 2-inch flows and 

 three 2-inch returns. Would this boiler 

 give more heat if more flows and returns 

 were added? Would you advise adding 

 more sections to the boiler or yoking 

 another boiler to it, in order to heat the 

 second house! O. C. E. — Md. 



It is uncertain, from the above ques- 

 tion, whether morfe heat is desired in the 

 present house or if merely some idea 

 of the capacity of the boiler is requested. 

 With the present amount of radiation 

 it will require quite heavy firing to raise 

 the temperature above 45 degrees in 

 zero weather. While it would not be 

 advisable to suggest any change in 

 the piping if 45 degrees is as high a 

 temperature as is desired, it would be 

 better to use one more return if you 

 are to rearrange the piping, using an 

 additional return for 50 degrees. 



The boiler is amply large to heat an 

 additional house of the pize mentioned, 

 provided, of course, that the size and 

 height of the chimney and smoke flue 

 make it possible for it to work up to the 

 full capacity of its grate. 



No 5-section boiler with a grate 3x4 

 feet is found in the catalogue of the 

 Lord & Burnham Co. The nearest to 

 it is their W.-36-7, which has seven sec- 

 tions and 1 grate 36x46 inches. This is 

 rated for about 4,000 square feet of 

 radiation. If the boiler on hand has 

 five sections and a grate or even a fire 

 pot measuring 3x4 feet, it would handle 

 the two houses. 



For piping the proposed house, use 

 three 2i^-inch flows and six 2-inch re- 

 turns for 50 degrees or three flows and 

 nine returns for 60 degrees. This al- 

 lows the use of three feet of glass in 

 the south wall. 



Run the flow pipes overhead and the 

 returns under the benches. 



SYSTEM INADEQUATE. 



I have installed a 7-section Ideal Ar- 

 eola parlor heater. The system includes 

 one radiator in the bathroom, one in 

 the parlor and one in the dining room. 

 The greenhouse is 16x25 feet, and has 

 one 2-inch flow pipe near the ridge, four 

 I'/A-inch returns under each side bench 

 and five 1%-inch returns under the cen- 

 ter bench. I wish to be able to heat 

 these to 70 degrees during zero weather, 



Battery of Kroeschell High Pressure Return Tubular Steam Boilers 

 with Suspended Setting. 



KROESCHELL 

 FUEL ECONOMY 



Higher production efficiency with lower 

 costs is what every business is striving 

 for nowadays. To the greenhouse man 

 this means more and better stock with 

 less operating expenses. 



Coal is the big item for the grower. 

 Each ton of coal he can save adds great- 

 ly to his profits. 



For fuel economy there is no better 

 boiler than the Kroeschell High Pressure 

 Steam Boiler. It burns the lowest grades 

 of coal, requires less, and gives more 

 heat. 



Kroeschell Boilers can be depended on 

 at all times. They insure conditions 

 necessary for raising the highest grade 

 stock. The profits of hundreds of grow- 

 ers have been increased by raising bet- 

 ter stock with less fuel in houses heated 

 by Kroeschell Boilers. 



EngineerinK Advice and Quota- 

 tions cheerfully submitted — 

 Let us know your requirements 



WHEN YOU BUY - GET A KROESCHELL 

 ■^HE BOILER OF UNEQUALED FUEL ECONOMY' 



KROESCHELL BROS. CO., 



444 W. Erie Street 



CHICAGO, ILL. 



