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The Florists^ Review 



Fbbbuart 23, 1922 



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 boil- 

 ers, or the amount of radiation required 

 for a greenhouse, the needed tempera- 

 tures should be stated in the inquiry, as 

 well as the amount of glass in the side 

 walls, and the dimensions and general 

 arrangement of the greenhouses. It is 

 often helpful, also, to have a sketch 

 showing the location of the houses. 



HEATING TWO HOUSES. 



We wish to install a heating system 

 which will take care of one house, 20x60 

 feet, and one, 20x75 feet. We have a 

 Moninger sectional boiler, which was 

 figured to be large enough to heat two 

 houses 20x60 feet. The boiler will be 

 placed in a pit at the east end of the 

 houses. The chimney is to be made of 

 brick. Can you give us instructions as 

 to how to install this system and how to 

 proceed with the construction of the 

 chimney! V. N. — N. C. 



The amount of radiation required in 

 the houses will depend, not only upon 

 the length and width of these houses, 

 but also upon the amount of glass in the 

 side walls, the temperature to be main- 

 tained and the minimum outside tem- 

 peratures. None of these is mentioned 

 in the above letter. If there is no more 

 than three feet of glass in the walls 

 and only one wall exposed after the sec- 

 ond house is erected, and if the average 

 temperature does not exceed 60 degrees, 

 with a minimum outside temperature of 

 10 degrees above zero, the two houses 

 can be heated with 1,000 square feet of 

 hot water radiation. 



If soft coal is to be used as fuel, it 

 will be desirable to install a boiler rated 

 at 1,800 to 2,000 square feet, and the 

 chimney for such a boiler, if brick, 

 should be twelve inches square, inside 

 measurcmentj and thirty feet high. In 

 the case that tall buildings interfere 

 with the draft, the height of the stack 

 should be increased so that the stack will 

 project about four feet above the build- 

 ings. Unless a good grade of brick can 

 be obtained, fire brick should be used 

 for lining the chimney inside for about 

 six feet, beginning at a point just be- 

 low the opening for the boiler flue and 

 working up. There should also be an 

 opening in the bottom of the chimney 

 for removing soot, etc. The wall of the 

 chimney should be doubled and, with a 

 12-inch flue, the chimney will be practic- 

 ally thirty inches square outside. To in- 

 sure against settling, the chimney should 

 have a concrete foundation five or six 

 feet sqiinre and at least four feet deep. 

 The exact dimensions of the foundation, 

 however, will have to be determined by 

 the character of the subsoil. Another 

 way of constructing the chimney would 

 be to use a flue lining which is twelve 

 inches squnre. In this case it would 

 only be necessary to carry the second 

 tier of bricks to a height of fifteen feet. 



CONNECTING A THIRD HOUSE. 



We have two connecting greenhouses 

 and wish to add a third, the dimensions 

 of which will be 21x100 feet. There 

 will be one side wall exposed, with two 

 and one-half feet of glass and the re- 



Kroeschell High Pressure 

 Steam Boilers 



Why is it that the largest ranges of greenhouses in the country are 

 heated by Kroeschell Boilers? 



These large places are operated by the oldest and best growers. 

 The judgment of these growers is based on a thorough knowledge 

 of greenhouse requirements gained by years of experience in the 

 greenhouse business. Their long experience with all kinds of boilers 

 has taught them that Kroeschell boilers are best in every way. That 

 is why the big men in the growing business select the Kroeschell for 

 their big ranges. 



Battery of Kroeschell High Pressure Return Tubular .Steam Boilers 

 with Suspended Setting. 



EngineerinK Advice and Quota- 

 tions cheerfully submitted — 

 Let us know your requirements 



WHEN YOU BUY - GET A KROESCHELL 

 "THE BOILER OF UNEQUALED FUEL ECONOMY' 



KROESCHELL BROS. CO., 



444 W. Eri* Street 

 CHICAGO, ILL. 



