Steam-heating Problems Or, Questions, Answers and Descriptions Relating to Steam-heating and Steam-fitting

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Sanitary Engineer, 1889 - 233 pages
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Page 49 - Divide the difference in temperature, between that at which the room is to be kept and the coldest outside atmosphere, by the difference, between the temperature of the steam pipes, and that at which you wish to keep the room, and the product will be the square feet, or fraction thereof, of plate or pipe surface to each square foot of glass, or its equivalent in icaU surface.
Page 131 - ... closed, or it may be a long split in the pipe. If the former, and very close to the pump, the mercury will not respond; but should it be far away with considerable length of pipe to cause resistance, the mercury will jump and return as suddenly. But should there be a split pipe or an aggregation of small leaks, the mercury will run back steadily, though slower than it rises, between the strokes of the pump. Should it rise well in the glass and sink at the rate of about one inch in five seconds,...

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