138 



The Rorists' Review 



Mabcii <J. 1922 



Greenhouse Heating 



SELECTING A BOILER. 



We iiro Itiiililiii^ one Ikiusc wliieli wo 

 iire going to use for roses, ciiriiiitions 

 and also for jiropiigatiiig purposes. Is 

 it necessary to segregate roses.' What 

 kind of boiler woiil<l you advise using 

 and wiiat |>iping arrangement would you 

 considei- best adapted to this house? 1 

 am mailing you a sketch of this house. 

 It is desired to run tiie temperature at 

 fiO degrees when the outside tempera- 

 ture goes bi'low zero. (". H. H. 



Till' plan sliows tile house to he ;{5.\118 

 feet, with foni- feet of glass al)ovc 

 the grade line. It is seven feet from 

 tlie floor to the level of the gutters 

 and ten feet from the floor to tlie ridge. 

 If these figures ai'(> correct, the roof 

 will have a ])ittdi of but three feet in a 

 liouse thirty-five feet wide, or but little 

 more than one foot in twelve, while a 

 pitch of one foot in five oi' e\'en one in 

 four feet is not unconinioii in houses of 

 this width. 



It appears that the boiler room is 

 oxca\ate(l to the de]ith of seven feet 

 and tlie walks to the depth of three 

 feet. From tlie sketch it would ajijiear 

 that solid beds are to be used, liiit, 

 since mention is made of bencdies in tlu' 

 above letter, it is inferred that the re- 

 turn coils may lie underneath the 

 benches instead of on the sides of the 

 walks, as would be necessary if solid 

 beds were to be used. 



It is unwise to attempt to grow car- 

 nations in the same house with roses, 

 as the latter reipiire a temperature 8 

 or 1(1 degrees higher and much greater 

 care in avoiding drafts from the ventila- 

 tors. While other plants that require 

 about the same temperature and general 

 care as roses may be grown in the same 

 house, better results will be obtained if 

 the roses are grown by themselves. 



To h(>at 20,000 square feet of glass 

 to (iO degrees, it would be advisable to 

 use a boiler lated at about 1(1,0(10 square 

 feet of hot water radiation, or better 

 yet, two boilers rated at .I.OOO scpiare 

 feet each. One boiler rated for jI.OOO 

 square feet of radiation will heat two 

 houses like the om- described above. 



It is suggested that you use five 2^;>- 

 iiudi flow |d|ies, jdacing one on ea(di side 

 wall plate and one over each of the three 

 middle beiKdies, slightly abine the level 

 of the plants. P'or the coils use nine- 

 teen 2-ineh return pipes, using f(Uir on 

 each side wall and three under each of 

 the inside benches. 



Kun the flows as well as the returns 

 downhill and connect the exjiansion tank 

 with the highest jioint in the system. 

 Have the ridge at least six feet above 

 the level of the plates. 



HEATING THREE HOUSES. 



We have two greenli(Uises ;iL'xS4 feet, 

 with a .'{(l-inidi <'oncrete wall at the 

 sides and ends an<l three feet of glass 

 from the toji of the concrete to the eiives 

 of the house at the sides. I'lejise ad 

 vise how many '_'i^_. inch flows .•ind 2-inch 

 returns will he required to heat the 

 houses to .">.") clegrees when the outside 

 t eiii|icr:it uic is 12 degrees above zero. 

 These houses arc facing northeast bv 

 east. 



We also lia\'e one house lfix74 feet, 

 with a ;i-foot wall around both sides 

 and front. One side has two feet of 

 glass above the wall. This house is f;ic 



Kroeschell Dependable 

 Hot Water Boilers 



How sure are you that your crops will 

 be all right? 



You can never be absolutely sure that 

 nothing will go wrong, but you can feel 

 pretty safe if you have a dependable 

 boiler that will always maintain the re- 

 quired temperature. 



With your houses equipped with a 

 Kroeschell Hot Water Boiler you need 

 not fear that your crops will be hurt by 

 low temperature. Under adverse weather 

 conditions, when crops are in most dan- 

 ger, it is easy to regulate temperatures 

 with Kroeschell Boilers. 



That Kroeschell Boilers are the safest 

 and most economical, has been proved by 

 their country-wide use in large and 

 small establishments, owned by the 

 wisest growers, where only the best of 

 equipment is used, and where the best 

 of stock is raised. 



NOT 



CAST 



IRON 



NOT 



CAST 



IRON 



You need not go far to find a grower 

 who has a Kroeschell. Go and see him. 

 After you have talked with him. you will 

 want one, too. Then write us a letter. 



EngineerinK Advice and Quota- 

 tions cheerfully submitted - 

 let us know your requirements 



WHEN YOU BUY - OET A KROC8CNELL 

 '*THE BOILER OF UMEQUALED FUEL ECONOMY" 



KROESCHELL BROS. CO 



444 W. Erie Street 

 y CHICAGO, ILL. 



