This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1917 edition. Excerpt: ... (vi), final pressure (P2), or coefficient of friction (f) for the flow of a gas in a pipe at a constant temperature of T degrees from a point, where the pressure is Pi pounds per square inch and the velocity is Vi, to a point 1 feet distant where the pressure is P2. The hydraulic radius, or the result ...
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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1917 edition. Excerpt: ... (vi), final pressure (P2), or coefficient of friction (f) for the flow of a gas in a pipe at a constant temperature of T degrees from a point, where the pressure is Pi pounds per square inch and the velocity is Vi, to a point 1 feet distant where the pressure is P2. The hydraulic radius, or the result obtained by dividing the area of the pipe by its perimeter, is m inches. X--p-5--feet per second. Pi2 Note. It is assumed that the velocity of the gas in long pipes is small and the change of kinetic energy is therefore neglected. For pipes of circular cross section m =-where d is the diameter, g is the acceleration due to 4 gravity and equals 32.2 feet per second per second approximately, f, the coefficient of friction, can be obtained experimentally and for air equals 0.0030 to 0.0045 approximately. See note of 617 for explanation of R. FLOW OF A SATURATED VAPOR The following relation holds for the flow of a saturated vapor during an "adiabatic change," or change in which no heat is added to or taken from the vapor. Velocity (v) of one pound of vapor, xf per cent dry, with a pressure of P pounds per square inch, after an adiabatic flow from a reservoir where the vapor is Xit per cent dry and has a pressure of Pi pounds per square inch and no velocity. At pressure Pi or P the volume is Vi or V cubic feet, the heat of the Neglecting friction. t Expressed as a decimal fraction. liquid qi or q B.t.u., the internal energy pi or p B.t.u., the heat of vaporization ri or r B.t.u. respectively. 670 = 778 (qi-q ] x.pi-xp) + 144 (P1V1-P2V2) foot-pounds. 671 = 778 (qi-q + XiTi-xr) + 144 " (Pi-P) foot-pounds. Note, V is expressed in feet per second. For explanation of o-see 638. In 671 the last term is small and may be omitted...
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New. Trade paperback (US). Glued binding. 326 p. In Stock. 100% Money Back Guarantee. Brand New, Perfect Condition, allow 4-14 business days for standard shipping. To Alaska, Hawaii, U.S. protectorate, P.O. box, and APO/FPO addresses allow 4-28 business days for Standard shipping. No expedited shipping. All orders placed with expedited shipping will be cancelled. Over 3, 000, 000 happy customers.
