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JA.NUABX 21. 1016. 



n. H. LINEAWEAVER & CO., Inc. 

 ANmACU #^#^ A|_ 



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Wm% Ind Trust Bulldins, PHILADELPHIA 



1 Broadway. NEW YORK 



Vufttinc BuUdinc. LEBANON. PA. 



Mention The Herlew when jon wiltoi 



Greenhouse Heating. 



' ' Smokeless mines have been, until re- 

 cently, running but three or four days 

 a week. It would take a mighty increase 

 in demand to bring them up to full time. 

 Until they are running full, it is out of 

 question to talk about a strong market." 

 — The Black Diamond. 



VEQETABLE HOUSE AND HOTBED. 



I am building a greenhouse and 

 should like you to tell me the proper 

 way to install the heating pipes. The 

 house is 20x60, inside measurement. 

 It runs east and west, with the boil- 

 er room at the west end. The boiler 

 room is four feet six inches lower 

 than the floor of the greenhouse. The 

 greenhouse is four feet six inches high 

 to tlie eaves and nine feet high to the 

 ridge. There is no glass in the north 

 wal) or in the west end below the eave. 

 The south wall has twenty inches of 

 glass. The east end has twenty inches 

 of glass below the eave. There is a 

 door in the east end. The wall under 

 the house and boiler room consists of 

 tile building blocks, except the south 

 wall, which is on posts, boarded up 

 to the glass. 



I expect to use steam heat. The 

 house is to be used for growing let- 

 tuce and for starting vegetable plants 

 in the spring. I shall use raise<l 

 benches, one 4-foot bench at each wall 

 and one 8-foot bench in the center of 

 the house. I have a 10-horsepower 

 portable steam boiler and expect to 

 use low pressure in moderate weather, 

 increasing the pressure in zero weather. 

 I want to pipe the house so as to be 

 safe when the outside temperature is 

 10 degrees below zero, as that tem- 

 perature is sometimes experienced in 

 this Pennsylvania climate. I want to 

 use 2-inch pipe for the main pipes 

 and 1-inch for the returns, as I have 

 these sizes on hand. I wish, if pos- 

 sible, to arrange the pipes in such a 

 way that I can use the space under the 

 benches for forcing rhubarb, etc. 

 Please explain how to make the re- 

 turn connections to the boiler correctly. 



I have a lot of 6-foot hotbed sashes 

 and want to use steam to heat them 

 in the spring, when I am growing 

 plants. They will be placed just west 

 of the boiler room. How should I put 

 in the pipes? Would it pay me to build 

 concrete walls for these sashes, when 

 I have good lumber that I can use. I 

 have a water tank which holds 2,000 

 gallons. It is twenty-five feet above 

 the greenhouse and 250 feet away. I 

 shall run a 2-inch line to the green- 

 house. Will this give enough pressure 

 to operate an overhead irrigation sys- 

 tem in the house and for coldframes? 

 Any suggestions will be appreciated. 



H. D. D. 



For piping the house described I 

 would suggest the use of one 2-inch 

 flow pipe, located about two feet be- 



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