82 



The Florists^ Review 



v-:;. ■ * - ■? 



Jancaby 9, 191d. 



■riX- 



Greenhouse Heating 



SuBSCBiBERS are invited to write the 

 Editor of this Department with regard to 

 any details of greenhouse heating that 

 are not understood. But please do not 

 ask The Review to make a choice of ap- 

 paratus for you. The greenhouse heating 

 equipment advertised in this paper is, we 

 believe, the best tor the trade to buy, and 

 each article the best in the special field 

 of its adaptation. 



SLUGGISH CIRCULATION. 



Please give me a little enlightenment 

 on my heating system, as the circula- 

 tion is far from satisfactory. The main 

 boiler is a Moninger No. 927, rated for 

 9,000 square feet of glass at 50 degrees 

 in zero weather. The fire pot is 32x51 

 inches and the grate surface is 27x51 

 inches. Only two of my greenhouses, 

 one of them 25x125 and the other 20x70, 

 are attached to this boiler. In both of 

 these houses I want a temperature of 

 50 degrees, but I do not succeed in heat- 

 ing the returns sufficiently. The boiler 

 carries a 14-inch smoke pipe. The chim- 

 ney is of brick construction. It is nine- 

 teen inches square and thirty-five feet 

 high, and there are no buildings within 

 fifty feet except a small stable. 



The lower three feet of the walls of 

 both houses are concrete, with two and 

 one-half feet of glass on the sides. The 

 houses are even-span and are fourteen 

 feet and twelve feet high to the ridge, 

 respectively. They are well glazed. A 

 hot water heating system is used, with 

 an automatic expansion tank, five feet 

 above the highest pipe. A Honeywell 

 generator is attached. The house 20x70 

 has one 3-inch feed, directly from the 

 boiler, with five 2-inch returns, ten 1^- 

 inch returns and a 2i4-inch main return. 

 Are the feed and return pipes large 

 enough? The house 25x125 has two 2%- 

 inch feeds, twelve 2-inch returns and 

 two 2 1/^ -inch main returns. The boiler 

 has four 4-inch outlets and foirr 4-inch 

 openings for returns. A rough sketch 

 is enclosed. A. T. V. — Pa. 



So far as can be judged from the de- 

 scription given, the boiler, smoke pipe 

 and stack are of ample size and the 

 radiation should be ample to give the 

 temperature desired without using the 

 Honeywell generator, which, however, 

 we are confident has nothing to do with 

 the failure to secure a good return. On 

 the other hand, it should be helpful. 



The amount of radiation in the houses 

 also appears to be ample; in fact, some- 

 what less should answer. We are not 

 quite sure just how the radiation is ar- 

 ranged, but would prefer to have the 

 return main from the smaller house of 

 the same size as the flow pipe. While 

 the returns, as indicated by the sketch, 

 are well above the boiler, and the gen- 

 erator also should aid in securing a 

 good circulation in the smaller house, 

 we prefer to use pipes larger than 1^- 

 inch for houses more than fifty feet in 

 length. 



Our suggestion for the house 20x70 

 feet would be to use 3-inch pipes for 

 the main flow and return. Then run a 

 2^-inch flow pipe along each plate or 

 just below the purlins and connect each 

 of these pipes with four 2-inch returns. 

 In the house 25x125 feet we would use 

 three 2Mi-inch flow pipes, placing one 

 under the ridge and one on each plate, 



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WHICH DO YOU Want? 



KROESCHELL SOlLBRS hav* no bulky, seot-aecumulatiiiK 

 surf ae«a — you avoid tho dioasrooaMo work and trouMo 

 indlsponsablo to cloanins boilors with complicated and 

 tortuous back and forth fir* passasos. 



NOT 

 CAST 

 IRON 



NOT 



CAST 



IRON 



The superiority of our boilers 

 has resulted in the removal and 

 abolishment of hundreds of 

 cast iron sectional boilers- in 

 every instance KROESCHELL 

 BOILERS Kive more heat with 

 the same plpins with less fuel. 



CAN SHIP 

 ANY SIZE 

 AT ONCE 



TELEGRAPH 



ORDERS AT 



OUR EXPENSE 



READ WHAT THE USERS SAY: 



Cast Iron Cannot Be Compared With Kroeschell. 



We bought a No. 2 Boiler in 1904. It takes care of 5,000 sq. ft. of glass, 

 and we could add 2,000 more. We are very well satisfied. We used a cast 

 iron boiler before we had yours. It cannot be compared with the Kroeschell 

 Boiler. Your boiler has certainly a great capacity for heating water. 



, Canada. 



Cast Iron Boiler Cracked in Two Years. 



We have a No. 4 Kroeschell Boiler. It takes care of 7,000 sq. ft. of glass; 

 it would take care of twice that amount. 



I first had a new cast iron boiler, which lasted two years, when it cracked 

 to pieces. The second was a second-hand boiler. 



I consider your boiler the best paying investment ever made. 



You can refer anyone to us. 



, Ohio. 



Kroeschell Versus Cast Iron. 



The No. 7 Boiler I bought from you is heating 14,000 sq. ft. of glass; I 

 think it can take care of 16,000 sq. ft. I do not have any trouble to keep up 

 temperature of 50° in the coldest weather. I fire only once after 12 o'clock 

 midnight. The boiler has given perfect satisfaction. I have four cast iron 

 boilers — like the Kroeschell best of all. If anyone wishes to inquire about 

 your boiler, let them write me, for I think your boilers are good ones. 



, Mich. 



WHEN YOU BUY GET A KROESCHELL 

 "THE BOILER OF UNCQUALED FUEL ECONOMY' 



Street, 



KROESCHELL BROS. CO., ^^i^Hc^l^i^ 



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