122 



The Weekly Florists' Review. 



NOVBMBEB 16, 1911. 



SNniI,LIllEAWEAVER&CO. 



COAL 



Aatknelto, BltamiBoas, Coke and Gm Coal 



m^t^^^. Philadelphia 



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Greenhouse Heating. 



HEAT FBOM RESIDENCE CELLAB. 



J ha^e just built a small greenhouse, 

 15x20, with a shed roof. The north 

 side is boarded tightly. I wish to heat 

 the house from a steam furnace in the 

 cellar of my dwelling house. Please 

 tell me how many pipes, and what size, 

 will be required to heat it to 65 or 70 

 degrees in our coldest Rhode Island 

 weather. F. K. S. 



The question does not give a clear 

 idea of the construction of the house, 

 or of the amount of exposed glass and 

 Avail surface, and this lack of particu- 

 lars makes it diflRcult to give any posi- 

 tive advice. However, it can be said 

 that, in heating with steam, it is ad- 

 visable to use 11/4 -inch, pipe, and, so 

 far as can be determined from the 

 data furnished, a simple way of ar- 

 ranging the pipi«g will be to begin 

 at the corner nearest the heater and 

 run the coils around on the walls, mak- 

 ing as nearly a Complete circuit as pos- 

 sible. The pipes should be given a 

 slight fall. The data 6 re not sufficient- 

 ly complete for an estimate of the 

 amount of radiation required, but it 

 will not be far from right if the num- 

 ber of linear feet of 1 14 -inch pipe is 

 one-half of the number of square feet 

 of glass in the roof and walls. 



A WRONG SYSTEM OF PIPING. 



Will you please tell me what is the 

 trouble with my heating system and 

 how I can remedy it^ I have a green- 

 house 16x60, in which I installed the 

 pipes myself. The beds are all solid. 

 The pipes are all l^-inch. One pipe 

 runs all the way around the building, 

 at the gutter, and the other three pipes 

 are hung on the wall and in the aisles. 

 Each pipe has an upward slant toward 

 the far end of the building and then 

 slopes back to the boiler. These four 

 pipes are all fed by one 2-inch pipe 

 which runs from the boiler to the 

 header, and the return is the same. 



The pipes heat only about halfway 

 around. The water seems to back up; 

 it gets hot in the expansion tank, but 

 only in part of the piping. Do you 

 think the pipes are air-bound, thus pre- 

 venting the circulation of the water? 

 Tffere are two air valves, one at the 

 far end of the building on the outside 

 pipe and the other on the header of the 

 return, but I can not get any air out 

 ef the pipes through these valves. My 

 boiler has a 200-foot radiation. Is it big 

 enough, or, if not, what size of boiler 

 does this greenhouse require for a tem- 

 perature of 50 degrees at night, in this 

 Indiana climate t J. H. N. 



While there may be other troubles 

 which are not made clear in the letter, 

 much of the difficulty is certainly due 

 to thd small pipe used and the way it 

 is arranged. For fe house sixty feet 

 long nothing less than l^^-inch pipe 



kSMOOTH-ON 



^ IRON CEMENT 



No. 1 



|K^^nlanently repairs cracks in greenlumsc 

 boilers, pipes, radiators, tanks, etc. 



Be sure and si'ud for a FREE No. 10 illus- 

 trate<l instruction hook. It tolls all about the 

 different Smooth-On Iron Cements, shows 

 how to use them anil we think it will save yon 

 money. Every florist should have a copy. 



OaoiL^^ 



SMOOTH -ON MFG. CO. 



572 Comminipaw Ave., JERSEY CITY, N. J. 



CEUCAGO: 



231 N. Jefferson Street. 



SAM rRANCIBCO: 



04 Market Street. 



SNoorn-oN 



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SPECIMEN PUNS 



FOR A 



Modern Heating System 



are given in the new 



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Wilks Hot Water Boilers 



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S. WILKS MFG. CO., 



8628 Shielda ATenue, 

 CHICAGO 



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IMICO 



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Are noted for coal economy and 

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