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week8-9 - A-IM W'Wfle’” “CPI—:61 L3'7m0...

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Unformatted text preview: A-IM W'Wfle’” “CPI—:61 L3_'7m0) __ “—39—“ KVG’) 3. Fri/,- FLM cfl: Q— W’r" WHFLR 9;: ”RE. -— [Tr l Mzétfirdr K :' b Mr) .2?er- __.J JC = 65 Re M kf- 3f 2 Dam] (£639:th In 14. 3L2" film I: g . L 23 erratum /w¥m ofuw Generab'ztd B-Mkul/F Efivuafia-a : kl'J12. = hf”? EAL 1‘ 1444.; I411? filth-v1 Juicer HFWM wwmhmw I’m”?- Additional Description Data K ; 5% rfd K]. Pipe entrancc 0.0 0.50 0.1 0.12 0; = K. Vii/2g . >02 003 Kg Kc Contraction Da/D] 0 = 60° 0 = 180° 0.0 0.08 0.50 0.20 0.08 0.491I 0.40 0.07 0.42 0.60 0.06 0.27 0.80 0.06 0.20 0; = KgVi/Zg 0.90 0.06 0.10 K5 K5 Expansion D DMD; 6' = 20° 0 = 180° V; 1 0.0 1.00 {2% '0‘ 32 0.20 0.30 0.87 T: g 0.40 0.25 0.?0 0.60 0.15 . 0.41 h = K; V023 0.80 0.10 0.15 Without vanes Kb = 1.1 1 90° miter bend ———-—-— With vanes K}, =- 0.2 1 r/d 1 90° smooth 1 K” E 0’35 ' bend 2 0.19 4 0.16 6 0.2] 8 0.28 10 0.32 Globe valve—wide open Kl. = 10.0 1 Angle valve—wide open K. = 5.0 Gate valvehwide open K.. E 0.2 Gate valve—half open K.. = 5.6 ”0““ Return band K. = 2.2 .p'?“ T00 fittlngs straight-through flow K, = 0.4 side-outlet flow K, = 1.8 90° elbow 117;. = 0.9 45" elbow K}, = 0.4 *Reprinted by permission of the American Society of Heating. Refrigerating and Air Candi Engineers, Atlanta. Georgia, from the 1931 ASHRAE Handbook-F11 ndamontals. . Mr) K We I I . 55 L 4% uni) [91" F264 MQéZJ-L .‘ N1} 2) Dmnw i "fin-‘i’ W WW ( _ I I ) BEEF HGL 0mm ”qt 9’ I Chaim (P4 o 000‘“ 3 WW *0 a“ WHO dr— '7’” [0 I?» —-é 00 Q? M¥M2mfifl~ . @DTW >> (73) man/um, ' ' (PIE ”@551 LOrnFJ’E/a [74 Edda/fl How;- 1’]?- 30 .4. L2 “-9 ) F , 4; Jr. D 36:67 Mariel mm 3C :: 30(er .9...) €~~ 1?ch MM rwfihnefl <L> L- GOA/LL60) I 0L. '- MM M‘s haw «o5 a PKoJ—of? WWW? M hacfl I07CQZL{ZV\[37D+462 6520)] jjfla J7 - [be-64 135410 2‘ 20001 @ezgxtog Swamee 83am {m7 7' m, +9 W 1:...0 96:; (g!) mfg?» 3:53"? 3'7a: 4.42 9D”, Er. {316360 MIHLC how—CAFQLQM mgr S, .fluanWu/a: QhZA—r—am P awwfiwme HUMBCMe/M D 4m L l 860- WWW” CE“ 5 W2»: ”’22: B. 'I" ZW‘R '61 ' 3.2 I Single Pipelines 73 ~— Transitional zone —><———— Rough turbulent zone ———>1 3.038 0.01 3.036 1 64 \ = _ 0.008 1 f Re \ 3.034 \ 3.032 \ 0.006 Laminar flow \ 3,030 3.028 \ 0.004 \ Q \m 2 3.026 \ X. s‘ \ e t 3.024 8 5 0.002 g E \ 3 :— 3022 \ 9 E .. \ .2 4-020 \ 0.001 g - \ C: 0.018 0.0006 2.016 \ 0.0004 Smooth p'pes \ Z 014 0.0002 \ 1.012 0.0001 :010 0.00005 3 008 0.00001 1 2 3 Z567891 2 3 4567891 2 3 4567891 2 3 4 56789‘ 2 3 4 103 ‘04 ‘05 ‘06 107 Reynolds number, Re Figure 3.3 I Moody Diagram Source: Moody, L. F. ”Friction Factors for Pipe Flow” 66(8), 1944, ASME, New York. ...
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