128 



The Florists' Review 



NOVEMBBU 3, 1921 



COAL 



JUST THE GRADE YOU WANT AT 



JUST THE PRICE YOU 



WANT TO PAY 



All the best graded from all the best fields, 

 specially selected for the (trcenhoune trade. 



POCAHONTAS, SPUNT. KENTUCKY, 

 HOCKING, ILUNOIS, INDIANA 



Our "Coal Trade Bulletin" explains everything 



SEND FOR IT 



THE GREENHOUSE COAL CO. 



1976 TraniporUtion BIdg., Chicago, 111. 



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. 



FORCING CIRCULATION. 



Last season we installed a crude oil 

 burner in the boiler of our hot water 

 heating system. This system consists 

 of five pairs of runs and returns directed 

 into three houses approximately 25x90 

 feet. Several cracks soon developed in 

 the concrete floor of the boiler room, 

 through which the water leaks badly. 

 We are anxious to repair the floor as 

 economically as possible. 



Would it be practical to raise the 

 boiler, which is five feet under ground, 

 to the level of the ground, leaving the 

 floor pipes as they are and installing a 

 small force pump to start circulation? 

 An electrically driven pump could be 

 easily installed, as a motor and connec- 

 tions are already there. H. C. — Cal. 



From the above it is inferred that 

 there are five flow and five return pipes 

 in each of the three houses. Whether 

 the plan proposed will give satisfactory 

 results will depend largely upon the ar- 

 rangement of the piping. With over- 

 head flow pipes running downhill and 

 with a 2i/l>-inch main return from each 

 house connected directly with the pump, 

 satisfactory results could be expected. 



HEATING TWO HOUSES. 



According to the sketch of my green- 

 houses sent you, will you tell mc whether 

 or not the boiler and piping now in use 

 will be sufficient to heat this range to 

 50 degrees in zero weather? The system 

 in question is of the hot water type and 

 the boiler is rated at 8.')0 scjuare feet of 

 radiation. W. E. R.— N. Y. 



The sketch shows the grocnhous(> to 

 be 24x30 feet, with sixteen inches of 

 glass in the side walls. The heating 

 pipes now in place consist of a 3-inch 

 main flow pipe and a main return of the 

 same size. From the main flow pipe, 

 eight 2-inch flow pipes run to the far- 

 ther end of the house, where they are 

 connected with eight 2-inch returns. 



This is not a 



bad time to 



get a boiler 



You need not hesitate in ordering 

 a Kroeschell Boiler now, fearing 

 that the demand for boilers is so 

 great at this time of the season 

 that your order may be delayed. 

 We have prepared for the rush 

 and can ship immediately any size 

 or style of Kroeschell Boiler you 

 want. Telegraph or telephone your 

 order to us at our expense. Long 

 Distance Phone Superior 8680; ask 

 for greenhouse department. Your 

 order will be filled at once. 



Ovai.^'v^ksssr 



KROESCHELL BROS. CO. 



444 W. Eri* Str««t 



CHlCAQOp ILL. 



