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# Class36_Ex3 - 8.36 Water flows through a hoﬁmlital 60-m...

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Unformatted text preview: 8.36 Water flows through a hoﬁmlital 60-m- diameter galvanized iron pipe at a time of 0.02 D3036” _ m’ls. If the pressure drop is 135 kPa per 10 m of _ . Pipe. do you think this pipe is (a) a new pipﬂ, (I!) a) . (2) an old Pipe with a somewhat increaseq roughness 2 = {OM35 be“ due to aging, or (c) a very old pipe that is partially ﬂ- ”/1 g! ' clogged by dcpusits? Justify your answer. F's-r Me Wizmt‘al Pipe (3; = 3;} w'ﬁ V= lei {he enter-W moire” ;+;1;+z,=41+1’,;+zz+1§¥ reduces In #11: {ﬁg/1 I0 135x103? a of,” i-(yﬁﬂﬂiwgl or f: 0.03244 E. where we have used V= %: ﬁﬂt;::6:r_]z = 297% WM 33-? ﬂ = W = 3 WINS nude .5- -.= egg—«maznmd I. IZXIU 5pm for a new 941mm; in» pipe (see Table 8 U Hie Mafia: fedor- shau/J be (.59: F9. 8.10) f- 010255 3mm! 1%: :3 In: Hum 395:? ash-a! wipe f= 0.931“, Me pike is maI a new pipe- W}: Re =3.7¢m‘ and f= 0.0319 we cum from 5-,. 8.2-0 a refm'ive newness of -3 = 0.0%. This 1:: a;,a~ﬁmfa[y Mat» #59 mvyéneu of a new p.59: -—e car/wkjy gw't‘e pmf‘le. 19 Harry 0“ par-{thy} dogged pipe WooH have midsmibl grader head [04-3. 7719:, 21/15 p699 is an «H: page: ME“ mﬂd mat-mad We”. ...
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