Question

Q) Methyl alcohol at 25 C is flowing at the rate of 54000 lit/h. The suction line is a standard 4-in Schedule 40 steel pipe, 1500 cm long. The total length of 2-in Schedule 40 steel pipe in the discharge line is 200 m. Assume the entrance from reservoir 1 is through a square-edged inlet and that the elbows are 90° standard. The valve is fully open globe valve. A) List the piping systems components B) Generate a simple schematic (sketch) of the system C) Is the system shown connected in series or in parallel? D) Identify the type of the flow in each pipe (suction and discharge). E) Calculate the major losses, minor losses, and total losses in this system. F) Calculate the horsepower supplied to the pump if its efficiency is 76% 10 m Discharge line DN 50 schedule 40 steel Pump Flow Standard elbows (2) Fully open globe valve Suction line schedule 40 steel

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Answer 1

writin ting iven dala or a Pping em Flid-Methalohol at 5 u t 54000 XIO -60x60 540 00 it /sec sec Suction Line-Schedule 40 steel pspe ss charge i 2 sche dule ic2.54 cm Fittings used are - 2 slandard 90elbow open obe varye Also the en trance at sacian tine s a square edge le

Pi ping System Components he ppin stemmponents ar i ) 1 in Scbedule 40 sleel PA is mat inlot at uction schedule 10eel pe CL C. at su c 2) o stee ength 2oom at dischara For schedule 40 steel pipe 3) Pump )Full open globe Ya lve e: surface roughness : O .045 mm Mir loss coefficient s) elbous standard 9o elbouss B) Schematic agram o m ine iSchatge l ction n suc pump qlobe valye

c) The i vens stem ts connected-in series, as there n one dascha 3e pape Tipe oi lo each pipe At suction- um bet 4i ere tempetature f methylI aleoho LS2SC P of meth l alcohol at roper ties 25C are Velo ty f me thy) alcohol t suction pspe is (A%).nl, t d1" π T 12 n x (o.1016广 V1.85 m/sec -.ols ㄲ x (0.0508)

: ¼: 1.11 m/sec Regnolds N pe umber for suction p Jt 543 X1 272417:34 >40。。 alcohol a Re Flo of methya Linesally turbulent Renold's numbero dascharge pe Re 5.43×15° Ftdischarge also fal l erblL e E) Major & Minor Losses su c

ac tot 2 574 2 37 D 1 3 2S 2727.34 Fiction O. suctio S'mla 3.325 S 75 0 01977 g oss given ea o j

2 LV, a D discharge 2 0 1979x 100 x 7-4 o1olG 2 x9.81 : Hf-217 8053 กา Major Head loss Also mso head กา- 石+2 2 a 2 S 05,nor loss cofFcient for et (square edae) where

F) Inpul Power lo pump cien in Hnet21 804329 672 +1 Hael 257.4767 m 07 G P392 33.GGS atts 10 52 5g2 Hf