112 



The Florists^ Review 



Tdnk 17, 1920, 



CreenhoBse 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 boilers, 

 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 LEAN-TO. 



I am thinking of building a 6x12 

 lean-to, or conservatory, to be placed on 

 the south side of my house, as indicated 

 in the accompanying sketch. The fur- 

 nace room is near the south side of the 

 house and would be next to the green- 

 house. I have a hot air furnace, with 

 range, boiler and coil for heating the 

 water. I should like to know whether 

 I can run water pipes into the green- 

 house from the hot water line and thus 

 heat the greenhouse. What size of pipes 

 should be used and in what arrangement 

 to give the best results? The hot water 

 pipes connected to the range boiler are 

 %-inch. The furnace is about five feet 

 from the outside wall against which the 

 lean-to would be built. 



C. E. C— Ind. 



The size of the furnace and the 

 amount of surface in the coil are not 

 given and it is not possible to determine 

 just how much radiation it will carry. 

 About sixty square feet will be required 

 to heat the conservatory, or about the 

 same as for a medium-sized room in a 

 dwelling house. There will be no diffi- 

 culty about heating the conservatory if 

 the coil is of suitable size. 

 r :■' The flow and return mains should be 

 114-inch and should be connected with 

 the coil close to the heater. The flow 

 pipe should be carried into the conserva- 

 tory and then run along the wall of the 

 dwelling a foot or so beloW the ridge. 

 At the farther end connect the flow pipe 

 with a coil of three 1-inch pipes under 

 the north bench, then carry it to a point 

 just beyond the door in the west end of 

 the house and there connect it with a 

 coil of six 1-inch pipes running from the 

 door to the front of the conservatory 

 and then along the front and east end of 

 the conservatory. There the returns 

 from the two coils should be joined and 

 carried back to the heater as a li4-inch 

 pipe. 



If the furnace coil has two square 

 feet of radiation, it will probably be 

 sufficiently large to heat the conserva- 

 tory. 



ARRANGEMENT OF PIPES. 



I am sending you a sketch of two 

 greenhouses under construction, each 

 21x130 foot, having SVo-foot walls, with 

 eighteen inches of glass in each side 

 wall and tho south gables of glass. I 

 wish to maintain a temperature of 60 

 degrees when the outside temperature is 

 10 degrees above zero. I plan to run 

 two 3-inch flows, one on each line of 

 purlin posts, and nine 2-inch returns, 

 three on each side wall and three near 

 the center of the house. I shall use a 

 No. 4 Kroeschell boiler. Can I expect 



B l=i,ESii]G^ Co.") c^ ei""T^ 



.ss 



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