128 



The Florists^ Review 



Jandabt 13, 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 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 help- 

 ful, also, to have a sketch showing the 

 location of the houses. 



HEATING ANSWER REVISED. 



In our letter to you of December 20 

 regarding a heating installation we 

 neglected to give side measurements of 

 the houses, which arc as follows: 

 House No. 1, the center house, has 

 three feet two inches of glass and three 

 feet four inches of cement on the sides 

 and twenty-six degrees of slope in the 

 roof. House No. 2 has four feet of 

 glass and two feet of cement on the 

 sides and the same pitch of roof. House 

 No. 3 has four feet of cement on the 

 sides and no glass, and a roof pitched 

 at thirty-two degrees. H. & S. — Can. 



Your first question and our answer 

 was printed in The Review for Decem- 

 ber 30. The answer was based on 

 houses without glass in the side walls. 

 To heat houses Nos. 1 and 2 to 40 

 degrees with the above measurements 

 of glass, it would be well to use an 

 additional return pipe in the coils along 

 the side walls. 



BUYING AN OLD BOILER. 



I want some information in regard to 

 a sectional cast-iron boiler which I 

 have a chance to buy. It is a 7-section 

 boiler made by the Magee Furnace 

 Works, Boston. Mass. The base is 

 about five feet long and the grate is 

 24x38 inches. Tt lias been used only 

 one season in a hotel. There are seven 

 flow and seven return ^lorts, all IV;;- 

 inch. Can some of these be cut out 

 and a flange bolted on to take a 3^^- 

 inch pipe? The surface of the section 

 is large enough to bolt one on. Will 

 this heat two lioiises, one 21xS8 feet 

 and one 0x100 feet, to r>0 degrees, with 

 outside teinper.'itnre 20 degrees below 

 7ero at times? The houses run east and 

 west from the office to the boiler shed. 

 There will be glass in both east gables; 

 no glass ^n the north side, and two feet 

 of glass on the south side. I intend 

 making concrete sides after this season 

 on the north and south. The east end 

 is double-boarded. T am only using the 

 large house this winter. 



J. .T. U.— Mich. 



A boiler with a grate 24x38 inches 

 should be quite large enough to heat 

 the houses described. Tt is probably 

 rated at nbout l.nno square feet of hot 

 water rndiation. while only about 1.300 

 feet will be required if the houses are 

 built together, with glass in only one 

 wall. It will be a mistake to attempt 

 to heat both houses with one 3%-inch 

 flow pipe. It would be preferable to 

 use a 4-inch pipe for the wide house ajid 

 a 3-inch flow for the other. The manu- 

 facturers of the heater will probably 

 be able to furnish a 4 inch header which 



"Ain't it a Grand and Glorioua Ftmling ?" 



Heat Your Houses ivith 

 Kroeschell Boilers 



YOU'LL BE HAPPIER 

 YOU'LL BE RICHER 



TO THE MAN WHO NEEDS A BOILER 



"The customer's interest first"— is the basis of the KROESCHELL standard. This 

 principle makes the KROESCHELL Policy the most liberal of all in the Green- 

 house Boiler business. The great variety of boilers that we make places us in a 

 commanding position. It is the KROESCHELL principle to supply only the type 

 of boiler best suited for the conditions. For this reason we always furnish the 

 most efficient boiler unit in every case. 



CAN SHIP 

 ANY SIZE 

 AT ONCE 



NOT 



CAST 



IRON 



NOT 

 CAST 

 IRON 



TELEGRAPH 



ORDERS AT 



OUR EXPENSE 



The KROESCHELL has proven its worth in many of the large establishments in 

 this country. It has frequently been selected by the most careful buyers in 

 competition with all other types of boilers. Its efficiency and capacity are com- 

 pletely beyond any other boiler. 



KROESCHELL BOILERS have no bulky, soot accumu- 

 lating surfaces— you avoid the disagreeable work and 

 trouble indispensable to cleaning boilers with compli- 

 cated and tortuous back and forth passages. 



The superiority of our boilers has resulted in the removal and abolishment of 

 hundreds of cast iron sectional boilers— in every instance KROESCHELL BOILERS 

 give more heat with the same piping with less fyel. 



WHEN YOU BUY - GET A KROESCHELL 



KROESCHELL BROS. CO., 



444 W. Erie Street 

 CHICAGO, ILL. 



