122 



The Florists' Review 



Mat 20. 1920. 



Greenhouse Heating 



SuBSCRiBKES are invited to write the 

 editor of this department with regard to 

 anj 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 weU 

 as the amoimt 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. 



"WHAT WILL COAL COST? 



Eepresentatives of the various rail- 

 road systems of the country have ap- 

 plied to the interstate commerce com- 

 mission for an average advance of 

 twenty-eight per cent in freight rates 

 to yield the $1,017,000,000 which they 

 say is needed in order to bring the earn- 

 ings of the roads up to the six per cent 

 basis allowed under the transportation 

 act of 1920. It has been suggested by 

 the railroads that passenger rates re- 

 main as they are and that the required 

 increase in revenues be obtained from 

 freight charges alone. It is anticipated 

 that the wage board now passing on 

 railroad workers' pay must make in- 

 <;reases amounting to nearly a billion 

 dollars a year more and in such case it 

 is believed a further increase of possi- 

 bly thirty per cent will be needed to 

 enable the railroads to meet the greater 

 pay roll. 



The combination of two such in- 

 creases will add more than fifty per 

 cent to the florists' freight bill next 

 fall, sending up the cost of his coal to 

 a figure undreamed-of a short time ago. 

 Since the cost of coal v^dll be higher 

 aside from the freight on it, the fuel 

 bill will be far greater than in previous 

 years. No diminution in the cost of 

 greenhouse production can be looked 

 for in that quarter; instead there will 

 be a tremendous advance. 



NO KEED OF LABGEE EETUENS. 



We have an Ideal hot water horizon- 

 tal boiler W22-6 in an old house that 

 we are wrecking. We are building a 

 house 21x150 feet, with a lean-to 6x150 

 feet on the north side for a propagat- 

 ing house, and want to know how much 

 radiation it will require to heat this 

 house. The boiler at present has two 

 3-inch flow pipes and four 3-inch re- 

 turns. Would it be better to have four 

 flow pipes t What difference would it 

 make to have only two returns t 



E. G. C— Kan. 



The letter fails to state the tempera- 

 ture desired in the houses and the 

 amount of glass in the walls is not 

 ^ven. If there is no glass in the walls 

 and if 60 degrees will suflSce, with 10 

 degrees of bottom heat in the propa- 

 gating house, about 1,700 square feet 

 of radiation will be required and the 

 boiler should have a rating of at least 

 2,000 square feet. I am not sure regard- 

 ing the rating of an Ideal W22-6, but 

 think it slightly under this. The boiler 

 should have a grate of at least 22x39 

 inches. A grate 24x39 inches would be 

 tetter for heat of 60 degrees, if re- 

 quired. 



While there is no objection to the use 



M 



KROESCHELL 



GREENHOUSE SPECIALTIES 



Mad* in 20 Sizea 



HEATING and COOLING are two branches of engineenuK on 

 wUck w« spccUUxe for the arreeahoase trade. 



Over thirty years have been devoted by us to the construction 

 and designing of boilers and refrigerating apparatus. 

 During this period we hare famished and installed heating and 

 cooling systems for the most successful greenhouse men in this 

 country. 



TubelMs Boiler 



KROESCHELL Boilers are making the most wonderful green- 

 house heating record in the world. Florists who have used 

 other makes are constantly giving the KROESCHELL the 

 highest praise. 



KROESCHELL: 



PIReicWATfRTUBt 



'ATCMTCO ISIZ 



BOILER. 



The High Pressure Kroeschell— a highly efficient unit for steam 

 plants 100 H. P. and OTer. 



13,468,520 sq. ft. of glass was equipped with KROESCHELL 

 Boilers during the past fire years. 



Water Tube Steam Boiler 



When in need of refrigeration investigate the Kroeschell Sys- 

 tem—its high efficiency and low cost of operation place the 

 Kroeschell System of Refrigeration in the foremost rank for 

 greenhouse use. Our system of Refrigeration and Cooling Is 

 easily installed— perfect control of temperature and absolute 

 safety insured— no ammonia used for this system. 



Send for Boiler or Ice Kachine Catalogues. 

 Sute which is wanted. 



BUY DIRECT-FACTORY TO USER PRICES 



KROESCHELL BROS. CO. 

 KROESCHELL BROS. ICE MACH. CO. 



444 W«8t Erie Street, 

 CHICAGO, ILL. 



