94 



The Florists^ Review 



April 24, 181'j. 



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. 



PROPOSED BETUBNS TOO SMALL. 



You will find enclosed a sketch of four 

 houses which I intend to build this sea- 

 son. Please let me know whether I can 

 heat all of these houses with the boiler 

 I have on hand. It is a 6-section Ideal 

 boiler. No. 22. I am using it now with 

 hot water, but wish to change to steam. 

 Should I add another section to the 

 boiler? 



Can I heat house No. 1 with ten 

 %-inch single-strength pipes, five of the 

 pipes running lengthwise on each wall 

 and the feed pipe running crosswise 

 through the center of the house f Can 

 I use 3-inch pipe for this feed, since I 

 have this size on handf In this house 

 I want a temperature of 55 degrees when 

 the outside temperature is 10 to 15 de- 

 grees below zero. Perhaps I should use 

 1-inch returns. No. 2 will be a general 

 plant house; will six %-inch pipes, three 

 on each wall, heat this house to 60 de- 

 grees t No. 3 will be a rose house; will 

 six %-inch pipes, three on each wall, 

 heat it to 60 degrees! No. 4 will be a 

 chrysanthemum house; will six %-inch 

 pipes, three on each wall, heat it to 55 

 degrees! 



All of these houses will be connected 

 and they will have 4-foot wooden walls, 

 with thirty-two inches of glass. No. 3 

 will have an 8-foot wooden wall on the 

 north side. All the houses will be eleven 

 feet high to the ridge and will have 

 glass gables, except where connected to 

 the store. W. A. — Wis. 



The sketch shows four houses that 

 run east and west and are of the follow- 

 ing description: No. 1, 21x72, is south 

 of the boiler room and is divided at the 

 center by a 4-foot passageway from the 

 boiler. Thus No. 1 is practically two 

 houses, each 21x34. We infer that the 

 south wall is seven feet high, with thir- 

 ty-two inches of glass. No. 2 is 12x50; 

 it is on the east side of the boiler room 

 and north of house No. 1. One end and 

 about twenty-two feet of the south wall 

 of No. 2 are exposed. Here, too, we un- 

 derstand there are thirty-two inches of 

 glass below the plate. House No. 3 is 

 12x50; it adjoins No. 2 on the north and 

 has the east end and north wall ex- 

 posed, the latter being eight feet high 

 and of wood. House No. 4 is on the 

 west side of the boiler house and is 

 14x30. We infer that this house has 

 thirty-two inches of glass in the north 

 wall. 



We have no catalogue of the Ideal 

 boiler at hand and do not recall the ex- 

 act dimensions or capacity of No. 22-6. 

 We presume it has a grate area of about 

 750 square inches and a rating of about 

 800 square feet of steam radiation. This 

 would suffice for the four houses, in lo- 

 calities where zero weather has to be 

 planned for, but for 15 degrees below 



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