172 



The Florists' Review 



DXCIMBKB 15, 1921 



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 de- 

 sired regarding the capacity of boilers, 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 help- 

 ful, also, to have a sketch showing the 

 location of the houses. 



HEATING WITH CHEIVUCALS. 



Do you know of a chemical substance 

 to be mixed with ashes or cinders, which 

 would give satisfactory results for heat- 

 ing purposes! How would a mixture of 

 sulphuric acid, oxalic acid, saltpeter or 

 nitrate and common salt, mixed in small 

 proportions with ashes, work? I should 

 appreciate a reply. O. W.— Minn. 



There are no chemical mixtures which 

 can be used economically for heating 

 purposes. The various nitrates, such as 

 saltpeter (potassium nitrate) and so- 

 dium nitrate, burn with an intense heat, 

 but at $75 per ton for the latter, and 

 considerably more for the former mate- 

 rial, it is impossible to see how they 

 could be economically used. There is 

 also no way in which a regular heat 

 could be secured. 



"When sulphuric acid is added to a 

 great variety of materials a violent heat 

 results, but this takes place at the mo- 

 ment the union is made, and is soon 

 over, so that it would not seem a prom- 

 ising method of heating a greenhouse. 

 Besides, the use of sulphuric acid, or any 

 of the other chemicals mentioned, would 

 have an in.iurious efEect upon the boiler. 



A suggestion along this line would be 

 to use some of the cheaper petroleum 

 products, mixed with muck and perhaps 

 with cinders, as fuel. It might be pos- 

 sible to mix them in small quantities 

 and use in a loose form, from day to day, 

 or they could be made into briquettes 

 and stored. 



UPHILL VS. DOWNHILL PIPING. 



I have observed that your heating ex- 

 pert advocates putting the highest point 

 of the flows, in a hot water system, near 

 the boiler. You are, of course, aware 

 that there are hundreds of miles of hot 

 water systems in the greenhouses ol 

 America today which have the highest 

 point of the flow at the farthest end of 

 the greenhouse. I will be piping a house 

 in the near future and should appreciate 

 an explanation of the reason why the 

 system with the highest point in the 

 flows near the boiler is preferable. 



D. B.— Neb. 



While it is true that water will cir- 

 culate fairly well in a hot water system 

 ill which the highest point is at the end 

 of the house farthest from the heater, 

 and also that many houses are piped in 

 that wnv, there are at least two good 

 reasons for locating the highest point as 

 close to the heater as possible. 



The first reason is largely a matter of 

 convenience. This method of running 

 the flow pipe, or pipes, makes it pos- 

 sible to connect the expansion tank 

 with the liighest point in the- system, 

 and thus, not only do away with the use 



GcKMl Judgment in 

 Buying a Boiler 



C. H. Totty 



For many years C. H. Totty 

 has used Kroeschell Boil- 

 ers. He expresses great 

 satisfaction with the service 

 of his boilers and highly 

 commends the efficiency of 

 Kroeschell Boilers in green- 

 house heating. 



Good judgment based on experience is 

 what makes successful business and, 

 naturally, the more capable a man is of 

 using good judgment and the greater 

 his power of utilizing his experience 

 and the experiences of others in exercis- 

 ing his judgment, the greater will be 

 the success of his business. 



It is impossible to believe that the 

 judgment of a man that is responsible 

 for the establishment of a large, per- 

 manently successful greenhouse busi- 

 ness is anything but good. It is sensi- 

 ble to let the judgment of the big men 

 in the flower business guide you in 

 making decisions for your own flower 

 business. 



Merit alone is responsible for the favor- 

 able opinion of Kroeschell Boilers that 

 prevails among the largest and most 

 successful growers. They select 

 Kroeschell Boilers for their heating 

 problems and recommend them for all 

 growers, large and small. You can 

 make no mistake by installing a boiler 

 in your greenhouses that has gained the 

 favor of men whose success in the 

 greenhouse business qualifies them as 

 experts in knowledge of greenhouse 

 requirements. 



We Can Ship 

 At Once 



any size boiler you need. We have a 

 complete stock of all sizes and styles. 

 Telegraph or Telephone your order to 

 us at our expense; Long Distance 

 'phone Superior 8680; ask for Green- 

 house Department. 



KROESCHELL BROS. CO. 



444 W. Eri* Str««t 



CHICAttO, ILL. 



