Ventilation for Dwellings, Rural Schools And Stables
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To quickly assess the difficulty of the text, read a short excerpt:
55 per square foot is capable of maintaining, which theoret- ically is more than 25,000 cubic feet per hour.
The magnitude of the temperatue effect in producing draft is given by the equation.
Cu. ft. per hour = 60 X 60 X 8 -, / ^-Hl^ H 1/ 491 where 60 X 60 is number of seconds per hour; 8 is V2g, and g is the increment of gravity, 32.16; T is temperature of the air inside; t is temperature of the air outside; H is height of room, chimney or ventilator: flj is the expansion of air for 1° P.
Sup...pose a ventilation flue one square foot in section 40 feet high, and the air in it maintained at a temperature 20° above the air outside. In such a case the theoretical flow through the flue would be 18,381 cu. ft. per hour.* This is the theoretical rate of flow, no account being taken of friction or other forms of resistance. The actual flow which would be associated with such a difference in pres- sure might be fully 50 per cent less than this.
The effect of temperature differences in producing draft increases with the hight of the chimney, ventilating flue, and with that of the room or stable.
What to read after Ventilation for Dwellings, Rural Schools And Stables?
You can find similar books in the "Read Also" column, or choose other free books by King, F. H. (Franklin Hiram), 1848-1911 to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
55 per square foot is capable of maintaining, which theoret- ically is more than 25,000 cubic feet per hour.
The magnitude of the temperatue effect in producing draft is given by the equation.
Cu. ft. per hour = 60 X 60 X 8 -, / ^-Hl^ H 1/ 491 where 60 X 60 is number of seconds per hour; 8 is V2g, and g is the increment of gravity, 32.16; T is temperature of the air inside; t is temperature of the air outside; H is height of room, chimney or ventilator: flj is the expansion of air for 1° P.
Sup...pose a ventilation flue one square foot in section 40 feet high, and the air in it maintained at a temperature 20° above the air outside. In such a case the theoretical flow through the flue would be 18,381 cu. ft. per hour.* This is the theoretical rate of flow, no account being taken of friction or other forms of resistance. The actual flow which would be associated with such a difference in pres- sure might be fully 50 per cent less than this.
The effect of temperature differences in producing draft increases with the hight of the chimney, ventilating flue, and with that of the room or stable.
What to read after Ventilation for Dwellings, Rural Schools And Stables?
You can find similar books in the "Read Also" column, or choose other free books by King, F. H. (Franklin Hiram), 1848-1911 to read onlineMoreLess
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