118 



The Rorists' Review 



August 4, 1921 



f BUY 



COAL NOW 



Best Grades for the Florist 



Prices Unusually Reasonable 



THE GREENHOUSE COAL CO. 



i 604 S. Dearborn Ht., CHICAGO, ILL. 



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 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 

 helpful, also, to have a sketch showing 

 the location of the houses. 



TO HEAT THE HOUSE. 



I plan to erect a greenhouse, 20x50 

 feet, to face about 15 degrees east 

 of north. Will you advise me as to how 

 I can heat this house? What heat is 

 best for pot and bedding plants? What 

 heat is best for winter-blooming flow- 

 ers? The side walls of the house will 

 have three feet of glass and two feet of 

 wood. T. F. S.— Ky. 



For a house of the size mentioned it 

 would be advisable to use hot water for 

 heating purposes. The temperature to 

 which it is to be heated is not stated, 

 but it is inferred that provision should 

 be made for 60 degrees in zero weather. 

 This will require about 500 square feet 

 of radiation and a boiler rated for about 

 800 square feet if soft coal is to be used. 

 It should be even larger than this unless 

 a good grade of coal is used. 



In the way of radiation, it would be 

 well to put in three 2i^-inch flow pipes, 

 running one on each side wall plate and 

 the other three feet below the ridge. 

 For the return coils, use twelve 2-inch 

 returns in three coils, placing one un- 

 der each side bench and the other un- 

 der the middle bench. Kun all pipes 

 downhill and connect the highest point 

 in the system with the expansion tank. 

 If a single main flow pipe is used, it 

 should be 3-inch. 



PART OF HOUSE GETS COLD. 



I have a greenhouse, of semi-iron con- 

 struction, 20x100 feet in size, which was 

 built two years ago. I have a great 

 deal of trouble in keeping the west end 

 of the house from getting too cold. The 

 boiler is under the dwelling at the west 

 end of the greenhouse. The cast end of 

 the house has a glass gable. There 

 are eleven l^-inch returns under the 

 benches and two 1%-inch returns on 

 the side walls. There is one 2Vj-inch 

 flow pipe in the center. Can you tell me 

 why the west end is so hard to keep at 

 the right temperature and how this con- 

 dition can be remedied? 



H. E. S.— 0. 



There are two things which we must 

 know before we can furnish a definite 

 answer to the questions and aid in ! 



KROESCHELL 

 BOILERS 



Kroeschell Boilers have a long-estab- 

 lished reputation for being the best boil- 

 ers for greenhouse heating. Their effi- 

 ciency has been proved by years of 

 satisfactory service in large and small 

 ranges everywhere. 



Kroeschell Boilers are selected by the 

 most careful buyers in competition with 

 all other types of boilers. Their effi- 

 ciency and capacity are completely be- 

 yond any other boiler. 



The increasing popularity of Kroeschell 

 Hot Water and Steam Boilers is keeping 

 our factories going at full force, filling 

 orders coming from all corners of the 

 country. 



If you have a heating problem, do not 

 wait. Tell us about it; we will be glad 

 to show you how it can be solved best 

 with the least expense. 



NOT 



CAST 



IRON 



NOT 



CAST 



IRON 



EnRine«rinK Advice and Quota- 

 tion« cheerfully submitted— 

 Let us knew your requirements 



WHEN YOU BUY - OET A KROESCHELL 

 "THE BOILER OF UNEQUALED FUEL ECONOMY" 



KROESCHELL BROS. CO., 



444 W. Eri* StrMt 

 CHICAttO, ILL. 



