114 



The Horists' Rcvic^ 



7uLT 14, 1921 



Franklin and ^lUamion County 



COAL 



BUY IT DIRECT FOR LESS MONEY 



Save Mlddkinan's ExorbiUnt Profit. 

 Hi(kMt TMb-HoMt W«fht-PrMipt SUpMsl. 



Write me today your needs and grade used. 

 Quotations will be made by next mail. 

 We advise placing orders now. 



J. A. WARD, 

 Herrin, - Illinois. 



Greenhonse 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. 



VALVES ON EETUEN PIPES. 



Would you advise the use of valves 

 in each return under the bench at the 

 far end of the greenhouse, in order to 

 distribute the water more evenly 

 through each coil I I hardly think so 

 myself, but I believe a valve in each 

 flow close to the boiler is sufficient. 

 This concerns hot water heat in a 50- 

 foot run. C. L. S.— 111. 



As a rule, it is not necessary to use 

 valves on any of the return pipes in 

 hot water heating. If a flow pipe runs 

 direct from the heater to each coil, a 

 valve on the flow near the heater as 

 suggested would suffice, but if several 

 coils are supplied by a flow pipe it will 

 be advisable to place a valve on each 

 of the supply pipes near the coils. Some- 

 times, when the returns are in vertical 

 coils and the lower ones are not much, 

 if any, above the top of the boiler, it 

 is helpful if valves are placed on one 

 or two of the returns in the upper part 

 of the coils. This makes it possible 

 to regulate the flow in the returns. 

 Otherwise most of the circulation might 

 be in the upper part of the coils. 



OVEBHEAD FLOWS. 



I have at the present time in the 

 course of construction a greenhouse, 

 25 X 150 feet, in which I shall grow 

 chrysanthemums, carnations and pot 

 plants. The question of heating is now 

 up. I can have overhead flows or flows 

 under the benches. I think that over- 

 head flows cool off in the winter more 

 quickly than those under benches. 

 They are near the glass, get cold air 

 from vents and, as heat rises, much heat 

 is lost. I also think that it would use 

 more heat and push from the boiler to 

 push hot water 150 feet and have it hot 

 when it returns. Am I right? Are there 

 advantages in having the flows under 

 the benches? I know the difference in 

 price, but I do not mind that. I want 



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. 



Ensinaerins Advice and Quota- 

 tions chaarfully submitted— 

 Let us know your roquiromonts 



WHEN YOU BUY - GET A KROESCHELL 

 •^HE BOILER OF UNEQUALED FUEL ECONOMY" 



'Sy 



KROESCHELL BROS. CO., 



444 W. Eri* Street 

 CHICAGO, ILL. 



