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124 



The Rorists^ Review 



JULV 0, 1922 



Greenho use Heating 



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Subscribers are invited to write the 

 editor of this department with regard to 

 any details of greenhouse heating that are 

 liot 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. 



IS BCILER LARGE ENOUGH? 



Will u 24x48-inch Wilks boiler lieat 

 ii oiooiihousc, 17x60 foet, to 4.'") degrecK 

 when the outside temperature drops to 

 zero'? Will two 2-in('h flow^s and ten 

 1-inih returns be sufficient for the heat 

 ing requirements? 11. H. (>. — O. 



A greenliou.se 17x00 feet, to bo licated 

 to 45 degrees, will require from 'MO to 

 400 square feet of radiation, accord- 

 ing to the amount of glass in the walls, 

 and !i boiler of the size mentioned is 

 generally rated at al)out L',r)00 square 

 feet of iiot water radiation. Therefore, 

 making every allowance for the mains, 

 the use of soft, coal, etc., the boiler will 

 be needed. In fact, a greenhouse 20x 

 .")0 feet, without gla.ss in the side walls, 

 has been heated to .'iO degrees, when 

 the outside' temperatures wa« 10 degrees 

 below zero, with a heater having a 

 •jr.ite twenty inches in diameter. 



If the house described above has no 

 j;lass in the walls, the pii)ing suggested 

 would be approximately sufficient to 

 supi)ly tlie amount of radiation required, 

 but it would be advisable to use larger 

 How and return pipes unless the .system 

 is ])laced under pres,sure. Our plan 

 •would call for two 214-inch flows on 

 the plates or purlins and six 2-inch re 

 turns on the side walls, or two of the 

 returns may be under the middle bench. 

 \Vith two to three feet of glass in each 

 w;ill, use (wo more returns. 



IS LARGER BOILER NEEDED? 



I have mailed you a plan of my };reen 

 house ranyc, including both that wliicli 

 is now built anil in operation and the 

 proposcil addition>. From the sketch 

 you will learn that there is one liouse, 

 LUtxfil feet, toiicthcr with an extension 

 I0 tliis house of l'!tx47 feet. There is 

 ;ilso a scivirc liuildiri^, IHx44 feet, to- 

 "ictlirr with aiiotlicr .'iddition to the main 

 liouse of I.'ixtiO fecit 011 the south side. 

 The larjic house is fifteen feet to the 

 ridjie. The house L'txTiO feet is eleven 

 feet to the riilfie. There will be four 

 feet of yliiss in one side wall of the 

 ]arye house and tivcs fecst of glass in that 

 part of tin- other side of the large house 

 whidi is exjiosed and .'ilso t\\'v feet in 

 the exposeil side of the sni;dl house. 



There :ire two lines of interior pipe 

 siijijxnts tlii'oujili both the large and 

 small liduses. Tpon tliese jiosts I will 

 lianji the How jiipes. I should jirefer 

 to jnit at least two returns :ilong each 

 of tile outside walls. The wide house 

 is to be used for growing carnations, 

 sweet i>eas, geraniums, etc. Tlie narrow 

 house is to be used for j)lants like be- 

 gonias, ferns, bulb forcing, propagat- 

 ing, etc. The outside t<'mpej-ature sel- 

 dom goes below 10 or ir> degrees below 

 zero. What size of boiler will be re- 



ORDER YOUR 



Kroeschell Boiler 



Now to have it ready 

 for firing this Fall 



Never before has there been such an 

 enormous demand for Kroeschell Boilers 

 as there is at present. Orders are coming 

 in by every mail from all parts of the 

 country and if necessary our factory will 

 be operated at full force day and night 

 in order to make satisfactory deliveries. 



Kroeschell Boilers can be depended on at 

 all times. They insure conditions neces- 

 sary for raising the highest grade stock. 

 The profits of hundreds of growers have 

 been increased by raising better stock with 

 less fuel in houses heated by Kroeschell 

 Boilers. 



WHEN YOU BUY - OET A KROESCHELL 

 "THE BOILER OF UNEQUALED FUEL ECONOMY" 



Send Your Order Today 



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Brunswick-Kroeschell Compcoiy 



444 West Erie St. CHICAGO. ILLINOIS 



