

■'Ir'v^ 



8i 



The Rorisb* Review 



« Septsmbsi) 5, 1912. 



house, for bulbs, etc., will need a low 

 temperature. Will you kindly give a 

 piping plan for both houses? Can the 

 pipes in the present house be tapped 

 to supply the additions, or should they 

 be piped independently! E, S, 



For the warm house, to be used for 

 propagating, if to be heated by means 

 of hot water, run a 2i>^-inch flow pipe 

 on the back wall, and put in four 2- 

 inch returns so that they will be cov- 

 ered by six inches of sand, and two 

 others on the outer wall, just under 

 the glass. If for steam, use ope 1%- 

 inch flow, with three li4-iiich" returns, 

 in the sand, and one on the .outside 

 wall. In the cool house use one 2-inch 

 flow and two 2-inch returns for hot 

 water; for steam, use a 1^-inch flow 

 and one return of the same size. 



As to the practicability of tapping 

 th6 pipes in the present house to sup- 

 ply the additions, it is difficult to 

 speak positively, but there is little 

 doubt that it will be safest to connect 

 with the boiler. 



SIZE OF BOILEB. 



Will you be good enough to advise 

 me as to the size of boiler required to 

 heat four greenhouses, each 30x120, 

 with a height of five feet to the eaves 

 and twelve feet to the ridge t There 

 are two feet of glass in the side walls 

 all around. My location is in northern 

 Wisconsin. A. M. 



The letter does not state what tem- 

 peratures are desired, or whether steam 

 or hot water will be used. 



For an average temperatuzAwAf. 60 

 degrees, it will be advisable to use a 

 boiler with a rating of 7,500r~8quare 

 feet for hot water and 4,000 square 

 feet for steam. A fifty horse-power 

 steam boiler should maintain a satis- 

 factory temperature, if one 2M8-inch 

 overhead flow and sixteen ^4 -inch re- 

 turns are used in the rose^BSBSfis and 

 ten or twelve 1%-inch retuinsfw car- 

 nations. For hot water, use" five 2^- 

 inch flt)w pipes and twelve tQ sixteen 

 2-inch returns, according to the tem- 

 perature desired. 



PIPING IN SOUTHERN ONTAEIO. 



Will you kindly inform us as to the 

 best method of heating our greenhouse 

 with hot water t We are located in 

 southern Ontario, in the same latitude 

 as Buffalo, N. Y. The house is 17x130. 

 The walls are of concrete and four 

 feet high to the eaves. The height 

 to the ridge is nine feet. The side 

 benches are raised and the center 

 ' bench is solid. The top of the boiler 

 can be placed one foot below the re- 

 turns. Should the expansion tank be 

 on the returns or on the highest . point 

 of the system? The boiler is ojf the 

 upright type, for hot water. The 'grate 

 is circular and is twenty-four inches 

 in diameter. Is this boiler large enough 

 to heat the house? We want a temper- 

 ature of 55 degrees when the outside 

 tejuperature is 10 degrees below zero. 



W. B. 



So ouich depend&.upon the efficiency 

 of a boiler that, without knowing 

 something more than the diameter of 

 the gtate, it is not safe to be positive 

 regarding how much glass a certain 

 boiler will heat. As a rule, to heat a 

 house requiring 900 square feet of ra- 

 diation, which is the amount needed in 



TWO 



REASONS 



WHY 



HIGH COMMENDATION WAS AWARDED 



SUPE^RIOR BOILERS 



AT S. A. F.-AUGUST 20-CHICAQO 



SaTiHg of Fid, ffiter ridiatira in acconat of (reater lOHtar of fliei. 

 Euilf Cleaned from the oitside— a laviig of tue and money. ; 



"*•• ' - ^ Th«r« war* many othars 



Write today for Gatalogue 



R MACHINE S BOILER WORKS 



Superior and Green Sts., CHICAGO. ILL/ 



Mention Tb« Rerlew when yon write. 



/ 10 Hours Without Firing 



even in severely cold weather, Ib a common 

 experience with those growers who use the 



waits Sdffediiit Hit Witer BtOen 



in the Coldest Weather Wilks Hot Water 

 Boilers Can Be Relied On 



to keep the temperature even and 

 continuous, making night firing 

 unnecessary. Made entirely ol 

 Bteel ; no cast iron sectiobs to crack 



You should know more about them. 

 Send for catalogue. 



S. Wilks Nfg. Co., 



3523 Shields Ave., 

 CHICAGO, ILL. 



Mention The Beylew when you write. 



IMICO 



Hot Water Bolltrs 



Made by 



IlilNOIS MALLEABLE IRON CO. 



180M825 Diveney BoMlevari 



CHICAGO 



Are noted lor eoml eooaomj mi4 

 , jpood reaulte ^nerallj 



^ ^ ^ nBND FOR CATALOGim 

 Mention Tfie Review wb^n you write^ ""'•' 



the present instance, it is well to use 

 a boiler with a grate at least twenty- 

 five inches in diameter, and twenty-six 



inches would be found to be more 

 economical. As the grate of the boiler 

 in question is only twenty-four inches 



