. Florists' review [microform]. Floriculture. 130 The Florists' Review Sbptbuber 7. 1022 cept from the size of the grate, but it is certainly not more than 1,000 square feet and is probably not over 900 feet. From this it is customary to make a deduction of nearly fifty per cent when soft coal is to be used and twenty-five per cent for hard coal, so that for the best results the boiler should not carry more than 500 to 600 square feet with soft coal, and 700 or 800 feet with hard coal, including the mains. Judging from the radiation listed, the boiler now is carrying 1,350 to 1,400 square feet
. Florists' review [microform]. Floriculture. 130 The Florists' Review Sbptbuber 7. 1022 cept from the size of the grate, but it is certainly not more than 1,000 square feet and is probably not over 900 feet. From this it is customary to make a deduction of nearly fifty per cent when soft coal is to be used and twenty-five per cent for hard coal, so that for the best results the boiler should not carry more than 500 to 600 square feet with soft coal, and 700 or 800 feet with hard coal, including the mains. Judging from the radiation listed, the boiler now is carrying 1,350 to 1,400 square feet of radiation, or about dou- ble its capacity. Another difficulty comes from attempting to supply any- thing like the above radiation with one 3-inch flow pipe. The present boiler and the main flow and return pipes are about right for the larger house and we advise either putting in a boiler with a 28-inch grate for the two houses, or adding a boiler with a 20-inch grate for the small house. At any rate, 2^- inch flow and return pipes, or better yet, 3-inch, should be run for this house. For radiation use three 2-inch flow pipes and nine returns for the wide house, and two flows and four 2-inch re- turns for the narrow house. This will practically use all of the 2-inch pipe, but there will be a surplus of 978 feet of 1%-inch pipe. PAINTING STEAM PIPES. What is used to paint greenhouse heating pipes? Could one use white lead and oil or a good, easily mixed white paint! W. D. & S.—Ind. The use of a white paint composed of white lead and oil is not advisable for painting steam pipes, for two good reasons. The paint will soon become discolored and will be far from attrac- tive in appearance; if the pipes are given two or more coats, which will be necessary if they are to be kept from rusting, it will give the pipes a smooth surface, which will lessen their effi- ciency for heat-radiating purposes. Instead of using lead and oil paint, it is suggested that you use equal parts o
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Keywords: ., bookcentury1900, bookdecad, booksubjectfloriculture, bookyear1912
