A manual of heating and ventilation, in their practical application, for the use of engineers and architectsEmbracing a series of tables and formulas for dimensions of heating flow and return pipes, for steam and hot water boilers, flues, etc., etc . 4 inch. The effectiveness is increased by widening the shaft towardsthe top. Reference : —G = Volume of air, in lbs., passing out of the shaft, per = Volume of steam, in lbs., passing out of the blast pipe, pei = Area of blast pipe , = Area of shaft or chimney. Aj = Total area of all air or smoke ducts leading to
A manual of heating and ventilation, in their practical application, for the use of engineers and architectsEmbracing a series of tables and formulas for dimensions of heating flow and return pipes, for steam and hot water boilers, flues, etc., etc . 4 inch. The effectiveness is increased by widening the shaft towardsthe top. Reference : —G = Volume of air, in lbs., passing out of the shaft, per = Volume of steam, in lbs., passing out of the blast pipe, pei = Area of blast pipe , = Area of shaft or chimney. Aj = Total area of all air or smoke ducts leading to = Pressure of atmosphere over pressure in chimney or = Pressure of steam in boiler,h, = Pressure of atmosphere — Measured by column of water = ft. 80 HEATING AND VENTILATION. p = Pressure of steam in boiler, in lbs., per sq. inch. a = Coefficient of friction in outlet of blast pipe = u = — = Sum of coefficients of friction in ducts leading to JD shaft; for values of which see f, page locomotives, u = 6 ; B = ?^. k: G ~ S = m; K A~ n; h _P X ~ m^ a(m—a(m ? -i)h-1)4 G?Bn^ S ? ; m = i+ Vi + Bnj h=(m—i) _ /n(m—i)V u m^+ n Additional Reference ; e = Density of the steam emitted by the blast pipe, (water e, = Density of the air = 800, for water = i. g = Accelerated gravity = V = Velocity of efflux of steam, in ft., per second. V, = Velocity of air in shaft. C = Cubic ft. of steam emitted per = Weight of steam emitted per second, in ; = Weight of air emitted per second, in , = Cubic ft. of water to be evaporated by boiler per hour. v= •v/2ghe; C = vAf; ) eC3600 W = ^ifl^;W. = Wkj K = Amount of coal consumed per h
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectventila, bookyear1901
