Handbook of thermodynamic tables and diagrams; a selection of tables and diagrams from Engineering thermodynamics . t o 0) S 13 O H fl -1-3 »H o M -t-^ o s CJ o O OI to ^• 1 o o 72 (V a, s M CmO o ?^ «> o 1^ 05 m 220 HANDBOOK OF THERMODYNAMIC ^ .024 .022 v02Q 4fi]8 ^ *016 .014 1 U- -Rr lok vval .012 \ \ \ \ \ \ \ \ .010 i\ V \\ \ y \. A V V \\ \ \, .008 \^ V s V s \ \ \, \ ««^ KN \^ \ K s, ^ s X ~ \\. S, \ ^->. .006 \^ s,^ V N -^^ A \ Ks^ •^ -r- 8^ V s., ii^H CH .12 — N s —— Q= ir .00:4 ?v^ ? _____ r ba - . L— jso ? r -inn ^ ^002 1 d 1 0 r !0 r JO 4 Q 6 0 Velocity Eeelrpet SecondChart 70
Handbook of thermodynamic tables and diagrams; a selection of tables and diagrams from Engineering thermodynamics . t o 0) S 13 O H fl -1-3 »H o M -t-^ o s CJ o O OI to ^• 1 o o 72 (V a, s M CmO o ?^ «> o 1^ 05 m 220 HANDBOOK OF THERMODYNAMIC ^ .024 .022 v02Q 4fi]8 ^ *016 .014 1 U- -Rr lok vval .012 \ \ \ \ \ \ \ \ .010 i\ V \\ \ y \. A V V \\ \ \, .008 \^ V s V s \ \ \, \ ««^ KN \^ \ K s, ^ s X ~ \\. S, \ ^->. .006 \^ s,^ V N -^^ A \ Ks^ •^ -r- 8^ V s., ii^H CH .12 — N s —— Q= ir .00:4 ?v^ ? _____ r ba - . L— jso ? r -inn ^ ^002 1 d 1 0 r !0 r JO 4 Q 6 0 Velocity Eeelrpet SecondChart 70.—Coefficients of Friction f for Air in Ducts. These values of the coefficient of friction are given by Rietschel for straight ducts ofbrick and iron for velocities up to 50 ft. per second; for iron ducts different values are givenfor perimeters or circumferences from 8 to 100 in. They are intended especially for airducts with the usual velocities of air, 6 to 24 ft. per second when served by fans, and 3 to8 ft. per second when the flow is due to natural draft. TABLES AND DIAGRAMS 221. 50 60 70 80 Diameter of Stack in Inches Chart 71.—-Curve Showing Diameter of Chimney Stacks at Sea Level. (Stirling).For brick or brick-lined stacks, increase the diameter 6 per cent. 222 HANDBOOK OF THERMODYNAMIC o >oa w 53CO m 1 1 1 S- 3f Var )o: r Oualitv J5 — — — ?? 80 ?? 5 ^75 ^ — — — — 60 .yu, = _ — — — ?* 19 f^ W. Ci-T irp;s_{>l Vapo] , .^^ 25 ur«^-?TT / / / / f / 20 / ^. v / / / / i \ / / / y f / 15 / / ^/ / / J / / / -- — <- — -- -- -- f / J / / f / f 10 / / / / / / 4 / \ V / / / / J / / / / / / 16 / / / / / / / / / f ,^/ / / / / / /; / / y r / / / / / / y u / J, z L _ i: a +J 3 MS ^;i ^ 540 Curv( 3S oO!iid uidjTemD. °F If )- . „„ ,^ r- r- r ^ r- ^ -^ 530 -- ^ ^ ^ r [x ^ ^ / y .^ -^ 520 • / ^ 607 ^ -^ ,^ ^ ^ y ^ — / ^ ^ •510 / ^ ) ^ -^ 7( y —? —? y ^ ^ ?— / ^ -- -^ 500 / / ^ / / -^ ^ ? 80 y ^ _„ ^ X ^, -— / ^ 490
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