Strainer Pressure Drop 2w6z6s
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Theory
Frictional Head Drop in Screens Reference Document :Chemical Engineers' Handbook by Perry & Chilton, Page 5-37 The flow through a screen can be considered as flow through a number of orifices or nozzles in parallel. Thus the pressure drop or head loss across a screen can be computed from an oricice type equation. The resulting equation for head loss is :Head loss through the screen, Dh =
2
2
2
2
(n/C ) x {(1-a )/a } x (V /2g)
where Dh = head loss,m of fluid n = no.of screens in series C = screen discharge coefficient( is a function of screen's Renolds no, Re) (for Plain square mesh screen, C vs.Re is given in fig.5-44,page 5-37 of of Chem.eng.Hand Book by Perry &Chilton) a = fractional free projected area of screen = l= d= g= V=
2
{(l-d)/l} centre to centre spacing of square screen wires diameter of screen wires acceleration due to gravity ( 9.80665m/s) superficial velocity ahead of screen,m/s
Experimental data indicate that for a series of screens, the over-all head loss is directly proportional to the number of screens in series, as given by the above equation, and is not affected by either the spacing between successive screens or by their orientation with respect to one another. Screen discharge coefficient C is a function of screen Reynold's Number, 1 .Re=Ds X V/(a X n) = where, n=kinetic viscosity of fluid(=µ/density of fluid) in m 2/s Ds = aperture width, m C is given by the curve under fig. 5-44, approximated by the following tabular data :-
241622320.xls.ms_office
Re
C
0.1 0.12 0.14 0.16 0.18 0.2 0.22 Re
0.0310 0.0340 0.0368 0.0393 0.0418 0.0441 0.0463 C
0.24 0.26
0.0483 0.0504
Page 1 of 26
Theory
241622320.xls.ms_office
0.28 0.3 0.32 0.34 0.36 0.38 0.4 0.42 0.44 0.46 0.48 0.5 0.52 0.54 0.56 0.58 0.6 0.62 0.64 0.66 0.68 0.7 0.72 0.74 0.76 0.78 0.8 0.82 0.84 0.86 0.88 0.9 0.92 0.94 0.96 0.98 1 1.2 1.4 1.6 1.8 2 2.2 2.4 2.6 Re
0.0523 0.0542 0.0560 0.0577 0.0594 0.0611 0.0627 0.0643 0.0658 0.0673 0.0688 0.0702 0.0717 0.0730 0.0744 0.0758 0.0771 0.0784 0.0796 0.0809 0.0821 0.0834 0.0846 0.0858 0.0869 0.0881 0.0892 0.0904 0.0915 0.0926 0.0937 0.0948 0.0958 0.0969 0.0979 0.0990 0.1000 0.1098 0.1187 0.1271 0.1350 0.1425 0.1496 0.1564 0.1629 C
2.8 3 3.2 3.4 3.6
0.1692 0.1753 0.1812 0.1869 0.1924
Page 2 of 26
Theory
241622320.xls.ms_office
3.8 4 4.2 4.4 4.6 4.8 5 5.2 5.4 5.6 5.8 6 6.2 6.4 6.6 6.8 7 7.2 7.4 7.6 7.8 8 8.2 8.4 8.6 8.8 9 9.2 9.4 9.6 9.8 10 12 14 16 18 20 22 24 26 28 30 Re
0.1978 0.2031 0.2082 0.2133 0.2182 0.2230 0.2277 0.2323 0.2369 0.2413 0.2457 0.2500 0.2542 0.2583 0.2623 0.2662 0.2701 0.2739 0.2776 0.2813 0.2849 0.2884 0.2919 0.2953 0.2987 0.3020 0.3053 0.3085 0.3117 0.3148 0.3179 0.3210 0.3495 0.3749 0.3979 0.4189 0.4384 0.4564 0.4733 0.4892 0.5042 0.5184 C
32 34 36 38 40 42 44 46
0.5319 0.5447 0.5570 0.5687 0.5800 0.5909 0.6013 0.6114
Page 3 of 26
Theory
241622320.xls.ms_office
48 50 52 54 56 58 60 62 64 66 68 70 72 74 76 78 80 82 84 86 88 90 92 94 96 98 100 120 140 160 180 200 220 240 260 280 300 320 340 Re
0.6211 0.6305 0.6396 0.6484 0.6569 0.6652 0.6733 0.6811 0.6888 0.6962 0.7035 0.7105 0.7174 0.7242 0.7308 0.7372 0.7435 0.7497 0.7557 0.7617 0.7675 0.7731 0.7787 0.7842 0.7896 0.7948 0.8000 0.8370 0.8697 0.8989 0.9255 0.9500 0.9726 0.9937 1.0135 1.0322 1.0499 1.0707 1.0901 C
360 380 400 420 440 460 480 500 520 540 560
1.1081 1.1249 1.1407 1.1555 1.1693 1.1824 1.1947 1.2063 1.2174 1.2278 1.2377
Page 4 of 26
Theory
241622320.xls.ms_office
580 600 620 640 660 680 700 720 740 760 780 800 820 840 860 880 900 920 940 960 980 1000 1200 1400 1600 1800 2000 2200 2400 2600 2800 3000 3200 3400 3600 3800 Re
1.2470 1.2560 1.2644 1.2725 1.2802 1.2875 1.2945 1.3012 1.3076 1.3137 1.3196 1.3252 1.3305 1.3356 1.3406 1.3453 1.3498 1.3518 1.3536 1.3554 1.3571 1.3587 1.3724 1.3824 1.3899 1.3956 1.3999 1.4032 1.4057 1.4076 1.4089 1.4099 1.4116 1.4133 1.4150 1.4169 C
4000 4200 4400 4600 4800 5000 5200 5400 5600 5800 6000 6200 6400 6600
1.4188 1.4208 1.4228 1.4249 1.4269 1.4290 1.4311 1.4332 1.4353 1.4374 1.4395 1.4416 1.4437 1.4458
Page 5 of 26
Theory
241622320.xls.ms_office
6800 7000 7200 7400 7600 7800 8000 8200 8400 8600 8800 9000 9200 9400 9600 9800 10000 12000 14000 16000 18000 20000 22000 24000 26000 28000 30000 32000 34000 36000 38000 40000 42000 Re
1.4479 1.4500 1.4521 1.4541 1.4562 1.4582 1.4603 1.4623 1.4643 1.4663 1.4683 1.4703 1.4723 1.4742 1.4762 1.4781 1.4800 1.4884 1.4952 1.5007 1.5052 1.5091 1.5124 1.5153 1.5178 1.5200 1.5219 1.5237 1.5252 1.5267 1.5279 1.5291 1.5301 C
44000 46000 48000 50000 52000 54000 56000 58000 60000 62000 64000 66000 68000 70000 72000 74000 76000
1.5311 1.5320 1.5328 1.5335 1.5342 1.5348 1.5353 1.5359 1.5363 1.5368 1.5372 1.5376 1.5379 1.5382 1.5385 1.5388 1.5390
Page 6 of 26
Theory
78000 80000 82000 84000 86000 88000 90000 92000 94000 96000 98000 100000
241622320.xls.ms_office
1.5393 1.5395 1.5397 1.5398 1.5400 1.5401 1.5403 1.5404 1.5405 1.5406 1.5406 1.5407
Page 7 of 26
Calculation Sheet
PRESSURE DROP CALCULATION FOR STRAINER 3 25 m /hr
Flow rate of liquid through strainer= Max. Kinematic viscosity of liquid (n)= Strainer inlet size=
6 cst 100 mm NB
Average Strainer Diameter
100 mm
Strainer effective length
405 mm
2
0.000006 m /sec (ID=102.26mm)
2 0.127235 m
Straining area= Screen :
32
0.79375 mm 32 swg 32 swg= 0.0108 inch 0.27432 mm (see.table:I-25, ref:piping hand book by crocker & king) Hence size of opening (aperture width)Ds= 0.51943 mm = 0.000519 m mesh
Note:mesh size=no.of wires per linear inch or. Spacing between two wires is the reciprocal of mesh size in inch.& swg=screen wire gauge Approx. % open area, i.e. fractional free projected area of screen, a = 0.428239 Now,velocity of liquid through strainer ,V=
0.054579884 m/s
Renold's no.Re=Ds X V/(a X n) =
11.0337162 2
where, n=kinetic viscosity of fluid(=µ/density of fluid) in m /s Ds = aperture width, m Screen discharge coeficient,C=
0.336148365
No. of screen in series= Head loss through the screen, Dh =
1 2
2
2
2
(n/C ) x {(1-a )/a } x (V /2g) or.
0.00598542 mlc 5.985420087 mmlc
(Ref.eqn.5-100,page 5-37 of Chem.eng.Hand Book by Perry &Chilton) where Dh = head loss,m of fluid n = no.of screens in series C = screen discharge coefficient( is a function of screen's Renolds no, Re) (for Plain square mesh screen, C vs.Re is given in fig.5-44,page 5-37 of of Chem.eng.Hand Book by Perry &Chilton) a = fractional free projected area of screen = l= d= g= V=
2
{(l-d)/l} centre to centre spacing of square screen wires diameter of screen wires acceleration due to gravity ( 9.80665m/s) superficial velocity ahead of screen,m/s
241622320.xls.ms_office
Page 8 of 26
REYNOLD'S NUMBER INPUT=
S
D Calc
D Actl
Re
C Calc
C Actl
-2.3026 0 2.3026 4.6052
-3.50656 -2.3026 -1.20813 -0.22314
-3.50656 0.099999 0.03 0.03 -2.3026 1 0.099999 0.099999 -1.20397 10.00015 0.298756 0.3 -0.22314 100.003 0.8 0.8
-2.30259 -2.12026 -1.96611 -1.83258 -1.7148 -1.60944 -1.51413 -1.42712 -1.34707 -1.27297 -1.20397 -1.13943 -1.07881 -1.02165 -0.96758 -0.91629 -0.8675 -0.82098 -0.77653 -0.73397 -0.69315 -0.65393 -0.61619 -0.57982 -0.54473 -0.51083 -0.47804 -0.44629 -0.41552
-3.47376 -3.38129 -3.30307 -3.23528 -3.17547 -3.12196 -3.07353 -3.02931 -2.98863 -2.95095 -2.91586 -2.88304 -2.8522 -2.82312 -2.79561 -2.7695 -2.74467 -2.72099 -2.69836 -2.67669 -2.6559 -2.63593 -2.6167 -2.59818 -2.5803 -2.56303 -2.54632 -2.53015 -2.51446
-3.47377
-3.10109
-2.90042
-2.78062
-2.65926
-2.55105
0.1 0.12 0.14 0.16 0.18 0.2 0.22 0.24 0.26 0.28 0.3 0.32 0.34 0.36 0.38 0.4 0.42 0.44 0.46 0.48 0.5 0.52 0.54 0.56 0.58 0.6 0.62 0.64 0.66
0.031 0.034004 0.03677 0.039349 0.041774 0.044071 0.046257 0.048349 0.050357 0.05229 0.054157 0.055964 0.057717 0.05942 0.061078 0.062693 0.064269 0.06581 0.067316 0.068791 0.070236 0.071653 0.073043 0.074409 0.075751 0.077071 0.078369 0.079647 0.080906
trial
0.031
0.045
0.055
0.062
0.07
0.078
zone - 1
-0.38566 -0.35667 -0.3285 -0.30111 -0.27444 -0.24846 -0.22314 -0.19845 -0.17435 -0.15082 -0.12783 -0.10536 -0.08338 -0.06188 -0.04082 -0.0202 0 0.182322 0.336472 0.470004 0.587787 0.693147 0.788457 0.875469 0.955511 1.029619 1.098612 1.163151 1.223775 1.280934 1.335001 1.386294 1.435085 1.481605 1.526056 1.568616 1.609438 1.648659 1.686399 1.722767 1.757858 1.791759
-2.49925 -2.48448 -2.47012 -2.45615 -2.44255 -2.42931 -2.4164 -2.40381 -2.39152 -2.37952 -2.3678 -2.35634 -2.34513 -2.33416 -2.32342 -2.3129 -2.30259 -2.20955 -2.13085 -2.06265 -2.00248 -1.94863 -1.89991 -1.85542 -1.81448 -1.77657 -1.74128 -1.70825 -1.67722 -1.64797 -1.62029 -1.59402 -1.56904 -1.54521 -1.52244 -1.50064 -1.47973 -1.45963 -1.44029 -1.42165 -1.40367 -1.38629
1.791759 1.824549 1.856298 1.88707 1.916923 1.94591 1.974081 2.00148 2.028148
-1.38628 -1.36973 -1.35376 -1.33835 -1.32346 -1.30905 -1.29511 -1.2816 -1.26849
-2.50104
-2.43042
-2.38597
-2.30259
-1.89712
-1.74297
-1.60944
-1.46968
-1.38629 -1.38629
-1.29098
0.68 0.7 0.72 0.74 0.76 0.78 0.8 0.82 0.84 0.86 0.88 0.9 0.92 0.94 0.96 0.98 1 1.2 1.4 1.6 1.8 2 2.2 2.4 2.6 2.8 3 3.2 3.4 3.6 3.8 4 4.2 4.4 4.6 4.8 5 5.2 5.4 5.6 5.8 6
0.082147 0.083369 0.084575 0.085765 0.086939 0.088098 0.089242 0.090373 0.09149 0.092595 0.093687 0.094767 0.095835 0.096892 0.097938 0.098974 0.1 0.10975 0.118736 0.127117 0.135001 0.142469 0.149582 0.156387 0.162922 0.169217 0.175296 0.181182 0.186892 0.192441 0.197842 0.203107 0.208246 0.213267 0.218178 0.222987 0.2277 0.232322 0.236859 0.241315 0.245695 0.250001
6 6.2 6.4 6.6 6.8 7 7.2 7.4 7.6
0.250002 0.254177 0.258267 0.262278 0.266213 0.270075 0.273868 0.277594 0.281255
0.082
0.088
0.092
0.1
0.15
0.175
0.2
0.23
0.25 0.25
0.275
2.054124 2.079442 2.104134 2.128232 2.151762 2.174752 2.197225 2.219203 2.24071 2.261763 2.282382 2.302585 2.484907 2.639057 2.772589 2.890372 2.995732 3.091042 3.178054 3.258097 3.332205 3.401197 3.465736 3.526361 3.583519 3.637586 3.688879 3.73767 3.78419 3.828641 3.871201 3.912023 3.951244 3.988984 4.025352 4.060443 4.094345 4.127134 4.158883 4.189655 4.219508 4.248495 4.276666 4.304065 4.330733 4.356709 4.382027 4.406719 4.430817 4.454347 4.477337 4.49981
-1.25577 -1.24342 -1.23141 -1.21973 -1.20836 -1.19729 -1.1865 -1.17598 -1.16572 -1.1557 -1.14592 -1.13636 -1.05132 -0.98112 -0.92158 -0.87004 -0.82471 -0.78433 -0.74799 -0.715 -0.68484 -0.65708 -0.63139 -0.60752 -0.58523 -0.56434 -0.5447 -0.52619 -0.50868 -0.49208 -0.47631 -0.4613 -0.44697 -0.43329 -0.42019 -0.40763 -0.39558 -0.38399 -0.37284 -0.3621 -0.35173 -0.34173 -0.33205 -0.3227 -0.31364 -0.30486 -0.29634 -0.28808 -0.28005 -0.27225 -0.26467 -0.25728
-1.23787
-1.20397
-1.13943
-0.84397
-0.65393
-0.54473
-0.46204
-0.38566
-0.34249
-0.28768
-0.24846
7.8 8 8.2 8.4 8.6 8.8 9 9.2 9.4 9.6 9.8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 74 76 78 80 82 84 86 88 90
0.284855 0.288396 0.29188 0.29531 0.298686 0.302012 0.305288 0.308517 0.311699 0.314837 0.317933 0.320986 0.349477 0.37489 0.397888 0.418934 0.438362 0.456425 0.473316 0.489191 0.504173 0.518365 0.531851 0.544702 0.55698 0.568735 0.580013 0.590854 0.601291 0.611354 0.621071 0.630466 0.63956 0.648373 0.656922 0.665222 0.673289 0.681136 0.688774 0.696214 0.703467 0.710543 0.717449 0.724194 0.730785 0.737229 0.743534 0.749704 0.755745 0.761663 0.767463 0.773149
0.29
0.3
0.32
0.43
0.52
0.58
0.63
0.68
0.71
0.75
0.78
zone - 2
4.521789 4.543295 4.564348 4.584967 4.60517
-0.2501 -0.24309 -0.23627 -0.22961 -0.22312
4.60517 -0.22317 4.787492 -0.17788 4.941642 -0.13964 5.075174 -0.10655 5.192957 -0.07739 5.298317 -0.05134 5.393628 -0.02778 5.480639 -0.0063 5.560682 0.013458 5.63479 0.031735 5.703782 0.048741 5.703782 5.768321 5.828946 5.886104 5.940171 5.991465 6.040255 6.086775 6.131226 6.173786 6.214608 6.253829 6.291569 6.327937 6.363028 6.39693 6.429719 6.461468 6.49224 6.522093 6.55108 6.579251 6.60665 6.633318 6.659294 6.684612 6.709304 6.733402 6.756932 6.779922 6.802395
0.048661 0.068333 0.086254 0.102655 0.117727 0.131628 0.144492 0.156431 0.167542 0.177907 0.187599 0.19668 0.205204 0.21322 0.220771 0.227893 0.234621 0.240984 0.247011 0.252724 0.258146 0.263297 0.268195 0.272856 0.277296 0.281527 0.285564 0.289416 0.293096 0.296612 0.299974
-0.22314 -0.22314
-0.05129
0.04879 0.04879
0.139762
0.182322
0.223144
0.239017
0.262364
0.300105
6.802395 0.30004 0.300105 6.824374 0.301438
92 94 96 98 100
0.778726 0.784198 0.789568 0.794841 0.80002
100 120 140 160 180 200 220 240 260 280 300
0.799976 0.837041 0.869671 0.898929 0.925525 0.949959 0.9726 0.993725 1.013549 1.032244 1.049948
300 320 340 360 380 400 420 440 460 480 500 520 540 560 580 600 620 640 660 680 700 720 740 760 780 800 820 840 860 880 900
1.049865 1.070722 1.090083 1.108109 1.124937 1.140684 1.155452 1.16933 1.182394 1.194714 1.206349 1.217354 1.227776 1.237657 1.247037 1.255951 1.264429 1.272501 1.280193 1.287528 1.294528 1.301213 1.307602 1.313711 1.319557 1.325152 1.330512 1.335648 1.340571 1.345293 1.349824
1.05
900 1.349913 920 1.351801
1.35
0.8 0.8
0.95
zone - 3
1.05
1.15
1.2
1.25
1.27
1.3
1.35
zone - 4
6.84588 6.866933 6.887553 6.907755 7.090077 7.244228 7.377759 7.495542 7.600902 7.696213 7.783224 7.863267 7.937375 8.006368
0.302783 0.30408 0.30533 0.306535 0.322083 0.316554 0.323819 0.329219 0.333293 0.336392 0.336472 0.33875 0.340534 0.341865 0.342831 0.343501 0.34359
8.006368 8.070906 8.131531 8.188689 8.242756 8.29405 8.34284 8.38936 8.433812 8.476371 8.517193 8.556414 8.594154 8.630522 8.665613 8.699515 8.732305 8.764053 8.794825 8.824678 8.853665 8.881836 8.909235 8.935904 8.961879 8.987197 9.011889 9.035987 9.059517 9.082507 9.10498 9.126959 9.148465 9.169518 9.190138 9.21034
0.343592 0.344699 0.345893 0.347154 0.34847 0.349827 0.351218 0.352633 0.354067 0.355516 0.356974 0.358439 0.359907 0.361376 0.362845 0.364311 0.365774 0.367231 0.368683 0.370128 0.371566 0.372996 0.374417 0.37583 0.377234 0.378629 0.380014 0.38139 0.382756 0.384112 0.385459 0.386795 0.388122 0.389439 0.390747 0.392045
0.34359
0.350657
0.357674
0.364643
0.371564
0.378436
0.385262
0.392042
940 960 980 1000 1200 1400 1600 1800 2000 2200 2400 2600 2800 3000
1.353621 1.355377 1.357072 1.358709 1.37239 1.382396 1.389882 1.395557 1.399888 1.403193 1.405698 1.40757 1.40893 1.409874
3000 3200 3400 3600 3800 4000 4200 4400 4600 4800 5000 5200 5400 5600 5800 6000 6200 6400 6600 6800 7000 7200 7400 7600 7800 8000 8200 8400 8600 8800 9000 9200 9400 9600 9800 10000
1.410003 1.411565 1.413251 1.415035 1.416898 1.418823 1.420796 1.422809 1.424851 1.426916 1.428999 1.431093 1.433196 1.435303 1.437413 1.439522 1.441629 1.443732 1.445829 1.44792 1.450003 1.452078 1.454144 1.4562 1.458246 1.460281 1.462305 1.464318 1.46632 1.46831 1.470288 1.472255 1.47421 1.476153 1.478084 1.480004
1.38
1.4
zone -5
1.41 1.41
1.42
1.43
1.44
1.45
1.46
1.47
1.48
zone -6
9.21034 9.392662 9.546813 9.680344 9.798127 9.903488 9.998798 10.08581 10.16585 10.23996 10.30895 10.37349 10.43412 10.49127 10.54534 10.59663 10.64542 10.69194 10.7364 10.77896 10.81978 10.859 10.89674 10.93311 10.9682 11.0021 11.03489 11.06664 11.09741 11.12726 11.15625 11.18442 11.21182 11.23849 11.26446 11.28978 11.31447 11.33857 11.3621 11.38509 11.40756 11.42954 11.45105 11.4721 11.49272 11.51293
0.391939 0.397705 0.402235 0.405903 0.408942 0.411503 0.413693 0.415587 0.417239 0.418693 0.419981 0.421129 0.422156 0.42308 0.423914 0.424668 0.425354 0.425978 0.426548 0.427068 0.427545 0.427982 0.428383 0.428752 0.429091 0.429403 0.42969 0.429954 0.430198 0.430422 0.430628 0.430818 0.430992 0.431153 0.431299 0.431434 0.431557 0.431669 0.431771 0.431864 0.431947 0.432023 0.43209 0.43215 0.432204 0.43225
0.392042
0.398776
0.405465
0.408793
0.41211
0.415415
0.41871
0.421994
0.425268
0.431782
10000 12000 14000 16000 18000 20000 22000 24000 26000 28000 30000 32000 34000 36000 38000 40000 42000 44000 46000 48000 50000 52000 54000 56000 58000 60000 62000 64000 66000 68000 70000 72000 74000 76000 78000 80000 82000 84000 86000 88000 90000 92000 94000 96000 98000 100000
1.479847 1.488405 1.495163 1.500658 1.505224 1.509085 1.512393 1.515259 1.517766 1.519974 1.521933 1.52368 1.525247 1.526656 1.527929 1.529083 1.530132 1.531087 1.53196 1.532757 1.533488 1.534158 1.534774 1.53534 1.535861 1.53634 1.536781 1.537187 1.537562 1.537906 1.538224 1.538516 1.538784 1.53903 1.539256 1.539463 1.539653 1.539825 1.539983 1.540125 1.540254 1.54037 1.540474 1.540567 1.540649 1.540721
1.48
1.49
1.5
zone -7
1.505
1.51
1.515
1.52
1.525
1.53
1.54
Re 0.1 1 10
100 1000 10000 100000
RE S 11.0337162 2.400956
D1
D2
P Q -2.39878 0.624087
D3
S1
R -0.03293
S2
D C -1.0902 0.336148 =FRICTIONAL COEFFICIENT OUTPUT
S3
R
Q
P
-3.47377
-2.30259
-1.38629
-2.3026
0 1.791759 0.000675 0.510188
-2.30259
-3.47377
-2.30259
-1.38629
-2.3026
0 1.791759 0.000675 0.510188
-2.30259
-1.38629
-0.54473
-0.22316 1.791759 3.688879
4.60517
-0.03293 0.624087
-2.39878
-0.22314
-0.05129
0.04879
4.60517 5.298317 5.703782
-0.00099 0.257713
-1.38899
0.048790164 0.187753 0.300159 5.703782 6.214608 6.802395
-0.07355 1.148584
-4.1098
0.300104592 0.336472
-0.02325 0.380401
-1.21176
0.34359 6.802395 7.600902 8.006368
0.343589704 0.371564 0.392042 8.006368 8.853665
9.21034 0.020266
-0.30867 1.515828
0.392044511 0.427692 0.432417
C 0.03 0.1 0.3
9.21034 10.81978 11.51293
Discharge coefficient,C 10
-0.00666 0.155524
-0.47552
10
C
0.8 1.4 1.5 1.6
1 Reynolds number Fig. 5-44
ONAL COEFFICIENT OUTPUT
INPUT SWG =
32
20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48
0.036 0.032 0.028 0.024 0.022 0.020 0.018 0.0164 0.0148 0.0136 0.0124 0.0116 0.0108 0.0100 0.0092 0.0084 0.0076 0.0068 0.0060 0.0052 0.0048 0.0044 0.0040 0.0036 0.0032 0.0028 0.0024 0.0020 0.0016
32
32
0.0108
0.0108
13 14 15 16 17 18 19 20 21
0.092 0.080 0.072 0.064 0.056 0.048 0.040 0.036 0.032
British Imperial Standard wire
gauge no.
British Imperial Standard wire
gauge no.
gauge no.
British Imperial Standard wire 0.500 0.464 0.432 0.400 0.372 0.348 0.324 0.300 0.276
FALSE
0.0108 =OUTPUT WIRE SIZE, INCH
Table:I-25 (ref:piping hand book by crocker & king) Wire and sheet metal gauges (dimension and thickness in decimal parts of an inch)
0000000 000000 00000 0000 000 00 0 1 2
0.0108
32 33 34 35 36 37 38 39 40
0.0108 0.0100 0.0092 0.0084 0.0076 0.0068 0.0060 0.0052 0.0048
3 4 5 6 7 8 9 10 11 12
0.252 0.232 0.212 0.192 0.176 0.160 0.144 0.128 0.116 0.104
22 23 24 25 26 27 28 29 30 31
0.028 0.024 0.022 0.020 0.018 0.0164 0.0148 0.0136 0.0124 0.0116
41 42 43 44 45 46 47 48 49 50
0.0044 0.0040 0.0036 0.0032 0.0028 0.0024 0.0020 0.0016 0.0012 0.0010
FALSE
Frictional Head Drop in Screens Reference Document :Chemical Engineers' Handbook by Perry & Chilton, Page 5-37 The flow through a screen can be considered as flow through a number of orifices or nozzles in parallel. Thus the pressure drop or head loss across a screen can be computed from an oricice type equation. The resulting equation for head loss is :Head loss through the screen, Dh =
2
2
2
2
(n/C ) x {(1-a )/a } x (V /2g)
where Dh = head loss,m of fluid n = no.of screens in series C = screen discharge coefficient( is a function of screen's Renolds no, Re) (for Plain square mesh screen, C vs.Re is given in fig.5-44,page 5-37 of of Chem.eng.Hand Book by Perry &Chilton) a = fractional free projected area of screen = l= d= g= V=
2
{(l-d)/l} centre to centre spacing of square screen wires diameter of screen wires acceleration due to gravity ( 9.80665m/s) superficial velocity ahead of screen,m/s
Experimental data indicate that for a series of screens, the over-all head loss is directly proportional to the number of screens in series, as given by the above equation, and is not affected by either the spacing between successive screens or by their orientation with respect to one another. Screen discharge coefficient C is a function of screen Reynold's Number, 1 .Re=Ds X V/(a X n) = where, n=kinetic viscosity of fluid(=µ/density of fluid) in m 2/s Ds = aperture width, m C is given by the curve under fig. 5-44, approximated by the following tabular data :-
241622320.xls.ms_office
Re
C
0.1 0.12 0.14 0.16 0.18 0.2 0.22 Re
0.0310 0.0340 0.0368 0.0393 0.0418 0.0441 0.0463 C
0.24 0.26
0.0483 0.0504
Page 1 of 26
Theory
241622320.xls.ms_office
0.28 0.3 0.32 0.34 0.36 0.38 0.4 0.42 0.44 0.46 0.48 0.5 0.52 0.54 0.56 0.58 0.6 0.62 0.64 0.66 0.68 0.7 0.72 0.74 0.76 0.78 0.8 0.82 0.84 0.86 0.88 0.9 0.92 0.94 0.96 0.98 1 1.2 1.4 1.6 1.8 2 2.2 2.4 2.6 Re
0.0523 0.0542 0.0560 0.0577 0.0594 0.0611 0.0627 0.0643 0.0658 0.0673 0.0688 0.0702 0.0717 0.0730 0.0744 0.0758 0.0771 0.0784 0.0796 0.0809 0.0821 0.0834 0.0846 0.0858 0.0869 0.0881 0.0892 0.0904 0.0915 0.0926 0.0937 0.0948 0.0958 0.0969 0.0979 0.0990 0.1000 0.1098 0.1187 0.1271 0.1350 0.1425 0.1496 0.1564 0.1629 C
2.8 3 3.2 3.4 3.6
0.1692 0.1753 0.1812 0.1869 0.1924
Page 2 of 26
Theory
241622320.xls.ms_office
3.8 4 4.2 4.4 4.6 4.8 5 5.2 5.4 5.6 5.8 6 6.2 6.4 6.6 6.8 7 7.2 7.4 7.6 7.8 8 8.2 8.4 8.6 8.8 9 9.2 9.4 9.6 9.8 10 12 14 16 18 20 22 24 26 28 30 Re
0.1978 0.2031 0.2082 0.2133 0.2182 0.2230 0.2277 0.2323 0.2369 0.2413 0.2457 0.2500 0.2542 0.2583 0.2623 0.2662 0.2701 0.2739 0.2776 0.2813 0.2849 0.2884 0.2919 0.2953 0.2987 0.3020 0.3053 0.3085 0.3117 0.3148 0.3179 0.3210 0.3495 0.3749 0.3979 0.4189 0.4384 0.4564 0.4733 0.4892 0.5042 0.5184 C
32 34 36 38 40 42 44 46
0.5319 0.5447 0.5570 0.5687 0.5800 0.5909 0.6013 0.6114
Page 3 of 26
Theory
241622320.xls.ms_office
48 50 52 54 56 58 60 62 64 66 68 70 72 74 76 78 80 82 84 86 88 90 92 94 96 98 100 120 140 160 180 200 220 240 260 280 300 320 340 Re
0.6211 0.6305 0.6396 0.6484 0.6569 0.6652 0.6733 0.6811 0.6888 0.6962 0.7035 0.7105 0.7174 0.7242 0.7308 0.7372 0.7435 0.7497 0.7557 0.7617 0.7675 0.7731 0.7787 0.7842 0.7896 0.7948 0.8000 0.8370 0.8697 0.8989 0.9255 0.9500 0.9726 0.9937 1.0135 1.0322 1.0499 1.0707 1.0901 C
360 380 400 420 440 460 480 500 520 540 560
1.1081 1.1249 1.1407 1.1555 1.1693 1.1824 1.1947 1.2063 1.2174 1.2278 1.2377
Page 4 of 26
Theory
241622320.xls.ms_office
580 600 620 640 660 680 700 720 740 760 780 800 820 840 860 880 900 920 940 960 980 1000 1200 1400 1600 1800 2000 2200 2400 2600 2800 3000 3200 3400 3600 3800 Re
1.2470 1.2560 1.2644 1.2725 1.2802 1.2875 1.2945 1.3012 1.3076 1.3137 1.3196 1.3252 1.3305 1.3356 1.3406 1.3453 1.3498 1.3518 1.3536 1.3554 1.3571 1.3587 1.3724 1.3824 1.3899 1.3956 1.3999 1.4032 1.4057 1.4076 1.4089 1.4099 1.4116 1.4133 1.4150 1.4169 C
4000 4200 4400 4600 4800 5000 5200 5400 5600 5800 6000 6200 6400 6600
1.4188 1.4208 1.4228 1.4249 1.4269 1.4290 1.4311 1.4332 1.4353 1.4374 1.4395 1.4416 1.4437 1.4458
Page 5 of 26
Theory
241622320.xls.ms_office
6800 7000 7200 7400 7600 7800 8000 8200 8400 8600 8800 9000 9200 9400 9600 9800 10000 12000 14000 16000 18000 20000 22000 24000 26000 28000 30000 32000 34000 36000 38000 40000 42000 Re
1.4479 1.4500 1.4521 1.4541 1.4562 1.4582 1.4603 1.4623 1.4643 1.4663 1.4683 1.4703 1.4723 1.4742 1.4762 1.4781 1.4800 1.4884 1.4952 1.5007 1.5052 1.5091 1.5124 1.5153 1.5178 1.5200 1.5219 1.5237 1.5252 1.5267 1.5279 1.5291 1.5301 C
44000 46000 48000 50000 52000 54000 56000 58000 60000 62000 64000 66000 68000 70000 72000 74000 76000
1.5311 1.5320 1.5328 1.5335 1.5342 1.5348 1.5353 1.5359 1.5363 1.5368 1.5372 1.5376 1.5379 1.5382 1.5385 1.5388 1.5390
Page 6 of 26
Theory
78000 80000 82000 84000 86000 88000 90000 92000 94000 96000 98000 100000
241622320.xls.ms_office
1.5393 1.5395 1.5397 1.5398 1.5400 1.5401 1.5403 1.5404 1.5405 1.5406 1.5406 1.5407
Page 7 of 26
Calculation Sheet
PRESSURE DROP CALCULATION FOR STRAINER 3 25 m /hr
Flow rate of liquid through strainer= Max. Kinematic viscosity of liquid (n)= Strainer inlet size=
6 cst 100 mm NB
Average Strainer Diameter
100 mm
Strainer effective length
405 mm
2
0.000006 m /sec (ID=102.26mm)
2 0.127235 m
Straining area= Screen :
32
0.79375 mm 32 swg 32 swg= 0.0108 inch 0.27432 mm (see.table:I-25, ref:piping hand book by crocker & king) Hence size of opening (aperture width)Ds= 0.51943 mm = 0.000519 m mesh
Note:mesh size=no.of wires per linear inch or. Spacing between two wires is the reciprocal of mesh size in inch.& swg=screen wire gauge Approx. % open area, i.e. fractional free projected area of screen, a = 0.428239 Now,velocity of liquid through strainer ,V=
0.054579884 m/s
Renold's no.Re=Ds X V/(a X n) =
11.0337162 2
where, n=kinetic viscosity of fluid(=µ/density of fluid) in m /s Ds = aperture width, m Screen discharge coeficient,C=
0.336148365
No. of screen in series= Head loss through the screen, Dh =
1 2
2
2
2
(n/C ) x {(1-a )/a } x (V /2g) or.
0.00598542 mlc 5.985420087 mmlc
(Ref.eqn.5-100,page 5-37 of Chem.eng.Hand Book by Perry &Chilton) where Dh = head loss,m of fluid n = no.of screens in series C = screen discharge coefficient( is a function of screen's Renolds no, Re) (for Plain square mesh screen, C vs.Re is given in fig.5-44,page 5-37 of of Chem.eng.Hand Book by Perry &Chilton) a = fractional free projected area of screen = l= d= g= V=
2
{(l-d)/l} centre to centre spacing of square screen wires diameter of screen wires acceleration due to gravity ( 9.80665m/s) superficial velocity ahead of screen,m/s
241622320.xls.ms_office
Page 8 of 26
REYNOLD'S NUMBER INPUT=
S
D Calc
D Actl
Re
C Calc
C Actl
-2.3026 0 2.3026 4.6052
-3.50656 -2.3026 -1.20813 -0.22314
-3.50656 0.099999 0.03 0.03 -2.3026 1 0.099999 0.099999 -1.20397 10.00015 0.298756 0.3 -0.22314 100.003 0.8 0.8
-2.30259 -2.12026 -1.96611 -1.83258 -1.7148 -1.60944 -1.51413 -1.42712 -1.34707 -1.27297 -1.20397 -1.13943 -1.07881 -1.02165 -0.96758 -0.91629 -0.8675 -0.82098 -0.77653 -0.73397 -0.69315 -0.65393 -0.61619 -0.57982 -0.54473 -0.51083 -0.47804 -0.44629 -0.41552
-3.47376 -3.38129 -3.30307 -3.23528 -3.17547 -3.12196 -3.07353 -3.02931 -2.98863 -2.95095 -2.91586 -2.88304 -2.8522 -2.82312 -2.79561 -2.7695 -2.74467 -2.72099 -2.69836 -2.67669 -2.6559 -2.63593 -2.6167 -2.59818 -2.5803 -2.56303 -2.54632 -2.53015 -2.51446
-3.47377
-3.10109
-2.90042
-2.78062
-2.65926
-2.55105
0.1 0.12 0.14 0.16 0.18 0.2 0.22 0.24 0.26 0.28 0.3 0.32 0.34 0.36 0.38 0.4 0.42 0.44 0.46 0.48 0.5 0.52 0.54 0.56 0.58 0.6 0.62 0.64 0.66
0.031 0.034004 0.03677 0.039349 0.041774 0.044071 0.046257 0.048349 0.050357 0.05229 0.054157 0.055964 0.057717 0.05942 0.061078 0.062693 0.064269 0.06581 0.067316 0.068791 0.070236 0.071653 0.073043 0.074409 0.075751 0.077071 0.078369 0.079647 0.080906
trial
0.031
0.045
0.055
0.062
0.07
0.078
zone - 1
-0.38566 -0.35667 -0.3285 -0.30111 -0.27444 -0.24846 -0.22314 -0.19845 -0.17435 -0.15082 -0.12783 -0.10536 -0.08338 -0.06188 -0.04082 -0.0202 0 0.182322 0.336472 0.470004 0.587787 0.693147 0.788457 0.875469 0.955511 1.029619 1.098612 1.163151 1.223775 1.280934 1.335001 1.386294 1.435085 1.481605 1.526056 1.568616 1.609438 1.648659 1.686399 1.722767 1.757858 1.791759
-2.49925 -2.48448 -2.47012 -2.45615 -2.44255 -2.42931 -2.4164 -2.40381 -2.39152 -2.37952 -2.3678 -2.35634 -2.34513 -2.33416 -2.32342 -2.3129 -2.30259 -2.20955 -2.13085 -2.06265 -2.00248 -1.94863 -1.89991 -1.85542 -1.81448 -1.77657 -1.74128 -1.70825 -1.67722 -1.64797 -1.62029 -1.59402 -1.56904 -1.54521 -1.52244 -1.50064 -1.47973 -1.45963 -1.44029 -1.42165 -1.40367 -1.38629
1.791759 1.824549 1.856298 1.88707 1.916923 1.94591 1.974081 2.00148 2.028148
-1.38628 -1.36973 -1.35376 -1.33835 -1.32346 -1.30905 -1.29511 -1.2816 -1.26849
-2.50104
-2.43042
-2.38597
-2.30259
-1.89712
-1.74297
-1.60944
-1.46968
-1.38629 -1.38629
-1.29098
0.68 0.7 0.72 0.74 0.76 0.78 0.8 0.82 0.84 0.86 0.88 0.9 0.92 0.94 0.96 0.98 1 1.2 1.4 1.6 1.8 2 2.2 2.4 2.6 2.8 3 3.2 3.4 3.6 3.8 4 4.2 4.4 4.6 4.8 5 5.2 5.4 5.6 5.8 6
0.082147 0.083369 0.084575 0.085765 0.086939 0.088098 0.089242 0.090373 0.09149 0.092595 0.093687 0.094767 0.095835 0.096892 0.097938 0.098974 0.1 0.10975 0.118736 0.127117 0.135001 0.142469 0.149582 0.156387 0.162922 0.169217 0.175296 0.181182 0.186892 0.192441 0.197842 0.203107 0.208246 0.213267 0.218178 0.222987 0.2277 0.232322 0.236859 0.241315 0.245695 0.250001
6 6.2 6.4 6.6 6.8 7 7.2 7.4 7.6
0.250002 0.254177 0.258267 0.262278 0.266213 0.270075 0.273868 0.277594 0.281255
0.082
0.088
0.092
0.1
0.15
0.175
0.2
0.23
0.25 0.25
0.275
2.054124 2.079442 2.104134 2.128232 2.151762 2.174752 2.197225 2.219203 2.24071 2.261763 2.282382 2.302585 2.484907 2.639057 2.772589 2.890372 2.995732 3.091042 3.178054 3.258097 3.332205 3.401197 3.465736 3.526361 3.583519 3.637586 3.688879 3.73767 3.78419 3.828641 3.871201 3.912023 3.951244 3.988984 4.025352 4.060443 4.094345 4.127134 4.158883 4.189655 4.219508 4.248495 4.276666 4.304065 4.330733 4.356709 4.382027 4.406719 4.430817 4.454347 4.477337 4.49981
-1.25577 -1.24342 -1.23141 -1.21973 -1.20836 -1.19729 -1.1865 -1.17598 -1.16572 -1.1557 -1.14592 -1.13636 -1.05132 -0.98112 -0.92158 -0.87004 -0.82471 -0.78433 -0.74799 -0.715 -0.68484 -0.65708 -0.63139 -0.60752 -0.58523 -0.56434 -0.5447 -0.52619 -0.50868 -0.49208 -0.47631 -0.4613 -0.44697 -0.43329 -0.42019 -0.40763 -0.39558 -0.38399 -0.37284 -0.3621 -0.35173 -0.34173 -0.33205 -0.3227 -0.31364 -0.30486 -0.29634 -0.28808 -0.28005 -0.27225 -0.26467 -0.25728
-1.23787
-1.20397
-1.13943
-0.84397
-0.65393
-0.54473
-0.46204
-0.38566
-0.34249
-0.28768
-0.24846
7.8 8 8.2 8.4 8.6 8.8 9 9.2 9.4 9.6 9.8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 74 76 78 80 82 84 86 88 90
0.284855 0.288396 0.29188 0.29531 0.298686 0.302012 0.305288 0.308517 0.311699 0.314837 0.317933 0.320986 0.349477 0.37489 0.397888 0.418934 0.438362 0.456425 0.473316 0.489191 0.504173 0.518365 0.531851 0.544702 0.55698 0.568735 0.580013 0.590854 0.601291 0.611354 0.621071 0.630466 0.63956 0.648373 0.656922 0.665222 0.673289 0.681136 0.688774 0.696214 0.703467 0.710543 0.717449 0.724194 0.730785 0.737229 0.743534 0.749704 0.755745 0.761663 0.767463 0.773149
0.29
0.3
0.32
0.43
0.52
0.58
0.63
0.68
0.71
0.75
0.78
zone - 2
4.521789 4.543295 4.564348 4.584967 4.60517
-0.2501 -0.24309 -0.23627 -0.22961 -0.22312
4.60517 -0.22317 4.787492 -0.17788 4.941642 -0.13964 5.075174 -0.10655 5.192957 -0.07739 5.298317 -0.05134 5.393628 -0.02778 5.480639 -0.0063 5.560682 0.013458 5.63479 0.031735 5.703782 0.048741 5.703782 5.768321 5.828946 5.886104 5.940171 5.991465 6.040255 6.086775 6.131226 6.173786 6.214608 6.253829 6.291569 6.327937 6.363028 6.39693 6.429719 6.461468 6.49224 6.522093 6.55108 6.579251 6.60665 6.633318 6.659294 6.684612 6.709304 6.733402 6.756932 6.779922 6.802395
0.048661 0.068333 0.086254 0.102655 0.117727 0.131628 0.144492 0.156431 0.167542 0.177907 0.187599 0.19668 0.205204 0.21322 0.220771 0.227893 0.234621 0.240984 0.247011 0.252724 0.258146 0.263297 0.268195 0.272856 0.277296 0.281527 0.285564 0.289416 0.293096 0.296612 0.299974
-0.22314 -0.22314
-0.05129
0.04879 0.04879
0.139762
0.182322
0.223144
0.239017
0.262364
0.300105
6.802395 0.30004 0.300105 6.824374 0.301438
92 94 96 98 100
0.778726 0.784198 0.789568 0.794841 0.80002
100 120 140 160 180 200 220 240 260 280 300
0.799976 0.837041 0.869671 0.898929 0.925525 0.949959 0.9726 0.993725 1.013549 1.032244 1.049948
300 320 340 360 380 400 420 440 460 480 500 520 540 560 580 600 620 640 660 680 700 720 740 760 780 800 820 840 860 880 900
1.049865 1.070722 1.090083 1.108109 1.124937 1.140684 1.155452 1.16933 1.182394 1.194714 1.206349 1.217354 1.227776 1.237657 1.247037 1.255951 1.264429 1.272501 1.280193 1.287528 1.294528 1.301213 1.307602 1.313711 1.319557 1.325152 1.330512 1.335648 1.340571 1.345293 1.349824
1.05
900 1.349913 920 1.351801
1.35
0.8 0.8
0.95
zone - 3
1.05
1.15
1.2
1.25
1.27
1.3
1.35
zone - 4
6.84588 6.866933 6.887553 6.907755 7.090077 7.244228 7.377759 7.495542 7.600902 7.696213 7.783224 7.863267 7.937375 8.006368
0.302783 0.30408 0.30533 0.306535 0.322083 0.316554 0.323819 0.329219 0.333293 0.336392 0.336472 0.33875 0.340534 0.341865 0.342831 0.343501 0.34359
8.006368 8.070906 8.131531 8.188689 8.242756 8.29405 8.34284 8.38936 8.433812 8.476371 8.517193 8.556414 8.594154 8.630522 8.665613 8.699515 8.732305 8.764053 8.794825 8.824678 8.853665 8.881836 8.909235 8.935904 8.961879 8.987197 9.011889 9.035987 9.059517 9.082507 9.10498 9.126959 9.148465 9.169518 9.190138 9.21034
0.343592 0.344699 0.345893 0.347154 0.34847 0.349827 0.351218 0.352633 0.354067 0.355516 0.356974 0.358439 0.359907 0.361376 0.362845 0.364311 0.365774 0.367231 0.368683 0.370128 0.371566 0.372996 0.374417 0.37583 0.377234 0.378629 0.380014 0.38139 0.382756 0.384112 0.385459 0.386795 0.388122 0.389439 0.390747 0.392045
0.34359
0.350657
0.357674
0.364643
0.371564
0.378436
0.385262
0.392042
940 960 980 1000 1200 1400 1600 1800 2000 2200 2400 2600 2800 3000
1.353621 1.355377 1.357072 1.358709 1.37239 1.382396 1.389882 1.395557 1.399888 1.403193 1.405698 1.40757 1.40893 1.409874
3000 3200 3400 3600 3800 4000 4200 4400 4600 4800 5000 5200 5400 5600 5800 6000 6200 6400 6600 6800 7000 7200 7400 7600 7800 8000 8200 8400 8600 8800 9000 9200 9400 9600 9800 10000
1.410003 1.411565 1.413251 1.415035 1.416898 1.418823 1.420796 1.422809 1.424851 1.426916 1.428999 1.431093 1.433196 1.435303 1.437413 1.439522 1.441629 1.443732 1.445829 1.44792 1.450003 1.452078 1.454144 1.4562 1.458246 1.460281 1.462305 1.464318 1.46632 1.46831 1.470288 1.472255 1.47421 1.476153 1.478084 1.480004
1.38
1.4
zone -5
1.41 1.41
1.42
1.43
1.44
1.45
1.46
1.47
1.48
zone -6
9.21034 9.392662 9.546813 9.680344 9.798127 9.903488 9.998798 10.08581 10.16585 10.23996 10.30895 10.37349 10.43412 10.49127 10.54534 10.59663 10.64542 10.69194 10.7364 10.77896 10.81978 10.859 10.89674 10.93311 10.9682 11.0021 11.03489 11.06664 11.09741 11.12726 11.15625 11.18442 11.21182 11.23849 11.26446 11.28978 11.31447 11.33857 11.3621 11.38509 11.40756 11.42954 11.45105 11.4721 11.49272 11.51293
0.391939 0.397705 0.402235 0.405903 0.408942 0.411503 0.413693 0.415587 0.417239 0.418693 0.419981 0.421129 0.422156 0.42308 0.423914 0.424668 0.425354 0.425978 0.426548 0.427068 0.427545 0.427982 0.428383 0.428752 0.429091 0.429403 0.42969 0.429954 0.430198 0.430422 0.430628 0.430818 0.430992 0.431153 0.431299 0.431434 0.431557 0.431669 0.431771 0.431864 0.431947 0.432023 0.43209 0.43215 0.432204 0.43225
0.392042
0.398776
0.405465
0.408793
0.41211
0.415415
0.41871
0.421994
0.425268
0.431782
10000 12000 14000 16000 18000 20000 22000 24000 26000 28000 30000 32000 34000 36000 38000 40000 42000 44000 46000 48000 50000 52000 54000 56000 58000 60000 62000 64000 66000 68000 70000 72000 74000 76000 78000 80000 82000 84000 86000 88000 90000 92000 94000 96000 98000 100000
1.479847 1.488405 1.495163 1.500658 1.505224 1.509085 1.512393 1.515259 1.517766 1.519974 1.521933 1.52368 1.525247 1.526656 1.527929 1.529083 1.530132 1.531087 1.53196 1.532757 1.533488 1.534158 1.534774 1.53534 1.535861 1.53634 1.536781 1.537187 1.537562 1.537906 1.538224 1.538516 1.538784 1.53903 1.539256 1.539463 1.539653 1.539825 1.539983 1.540125 1.540254 1.54037 1.540474 1.540567 1.540649 1.540721
1.48
1.49
1.5
zone -7
1.505
1.51
1.515
1.52
1.525
1.53
1.54
Re 0.1 1 10
100 1000 10000 100000
RE S 11.0337162 2.400956
D1
D2
P Q -2.39878 0.624087
D3
S1
R -0.03293
S2
D C -1.0902 0.336148 =FRICTIONAL COEFFICIENT OUTPUT
S3
R
Q
P
-3.47377
-2.30259
-1.38629
-2.3026
0 1.791759 0.000675 0.510188
-2.30259
-3.47377
-2.30259
-1.38629
-2.3026
0 1.791759 0.000675 0.510188
-2.30259
-1.38629
-0.54473
-0.22316 1.791759 3.688879
4.60517
-0.03293 0.624087
-2.39878
-0.22314
-0.05129
0.04879
4.60517 5.298317 5.703782
-0.00099 0.257713
-1.38899
0.048790164 0.187753 0.300159 5.703782 6.214608 6.802395
-0.07355 1.148584
-4.1098
0.300104592 0.336472
-0.02325 0.380401
-1.21176
0.34359 6.802395 7.600902 8.006368
0.343589704 0.371564 0.392042 8.006368 8.853665
9.21034 0.020266
-0.30867 1.515828
0.392044511 0.427692 0.432417
C 0.03 0.1 0.3
9.21034 10.81978 11.51293
Discharge coefficient,C 10
-0.00666 0.155524
-0.47552
10
C
0.8 1.4 1.5 1.6
1 Reynolds number Fig. 5-44
ONAL COEFFICIENT OUTPUT
INPUT SWG =
32
20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48
0.036 0.032 0.028 0.024 0.022 0.020 0.018 0.0164 0.0148 0.0136 0.0124 0.0116 0.0108 0.0100 0.0092 0.0084 0.0076 0.0068 0.0060 0.0052 0.0048 0.0044 0.0040 0.0036 0.0032 0.0028 0.0024 0.0020 0.0016
32
32
0.0108
0.0108
13 14 15 16 17 18 19 20 21
0.092 0.080 0.072 0.064 0.056 0.048 0.040 0.036 0.032
British Imperial Standard wire
gauge no.
British Imperial Standard wire
gauge no.
gauge no.
British Imperial Standard wire 0.500 0.464 0.432 0.400 0.372 0.348 0.324 0.300 0.276
FALSE
0.0108 =OUTPUT WIRE SIZE, INCH
Table:I-25 (ref:piping hand book by crocker & king) Wire and sheet metal gauges (dimension and thickness in decimal parts of an inch)
0000000 000000 00000 0000 000 00 0 1 2
0.0108
32 33 34 35 36 37 38 39 40
0.0108 0.0100 0.0092 0.0084 0.0076 0.0068 0.0060 0.0052 0.0048
3 4 5 6 7 8 9 10 11 12
0.252 0.232 0.212 0.192 0.176 0.160 0.144 0.128 0.116 0.104
22 23 24 25 26 27 28 29 30 31
0.028 0.024 0.022 0.020 0.018 0.0164 0.0148 0.0136 0.0124 0.0116
41 42 43 44 45 46 47 48 49 50
0.0044 0.0040 0.0036 0.0032 0.0028 0.0024 0.0020 0.0016 0.0012 0.0010
FALSE
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