Figure 7.54 shows a portion of a fire protection system in which a pump draws 1500...

  

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Figure 7.54 shows a portion of a fire protection system in which a pump draws 1500 gal/min of water at 50°F from a reservoit and delivers it to point B. The energy loss be- tween the reservoir and point A at the inlet to the pump is 0.65 lb-ft/lb. Specify the required depth h to maintain at least 5.0 psig pressure at point A. Flow 8-in Schedule 40 steel pipe 25 f Hee Pump A 10-in Schedule 40 steel pipe DIMENSIONS OF STEEL PIPE TABLE F.1 Schedule 40 Nomiral Pie Sae Outside Diameter Wall Thickness NPS Inside Diameter Flow Area Imm) in) mm) In) (m?) (mm) 20,068 1.73 0.260 0.0224 0.000 94 0.000 723 68 3,660 x 102 0.088 224 0.264 :0.0303 9.2 675 6717.X 10 1.236 x10 0.0411 125 0:001 33 .540 D.0618 15.8 0.002.11 3.960 x10 287 B 0687 :209 0003 70 3437 x 10 25 1315, 32 338 1049 0.0874 26.6 0:006 00 5.574 X 10 482 35.1 0.010 39 9.653 X10 40 1.900 S83 04342 20.9 0014 14 1314 x 10 2168 x 10 50 2375 0.154 0.023 33 525 627 65 02068 0.2557 25 2.875 73.0 0.203 246 0033 26 3.090 x 10 80 3.500 889 0.216 :0.051/32 A768 x 10 90 4.000 101.6 0.226 E:74 8543 90.1 6.381 x 10 0.068 68 100 4.500 114.3 0.237 6.02 4026 1023 0.088 40 8213 x 10 125 5.563 141.3 0.258 6.56 5047 0.4206 1282 0.1390 1.291 x 10 150 6.625 168.3 0.280 7.11 8.065 05064 154.1 0.200 6 1.864 x 10 200 8.625 219.1 0.322 B18 7.981 0,6651 202.7 0.347 2 3.226 x 10 10 250 10,750 273.1 0.365 9.27 30.020 0.8350 254.5 0.547 9 5.090 x 10 12 12.750 323.9 0406 10.31 11.938 0.9948 303.2 0.777 1 7.219 x 10 300 14.000 14 350 355.6 0437 1110 3.126 1.094 333.4 0,939 6 8.729 x 102 16.000 406,4 0.500 12 70 15.000 1,250 381.0 1 227 01140 16 400 18 450 18:000 4572 0.562 14.27 16.876. 1.406 428.7 1553 0.1443 500 20.000 18.814 1.568 477.9 1.931 0.1794 508.0 609.6 20 0.593 15.06 24 600 24.000 0.687 17.45 22.626 1.886 574.7 2.792 0.2594 Figure 7.54 shows a portion of a fire protection system in which a pump draws 1500 gal/min of water at 50°F from a reservoit and delivers it to point B. The energy loss be- tween the reservoir and point A at the inlet to the pump is 0.65 lb-ft/lb. Specify the required depth h to maintain at least 5.0 psig pressure at point A. Flow 8-in Schedule 40 steel pipe 25 f Hee Pump A 10-in Schedule 40 steel pipe DIMENSIONS OF STEEL PIPE TABLE F.1 Schedule 40 Nomiral Pie Sae Outside Diameter Wall Thickness NPS Inside Diameter Flow Area Imm) in) mm) In) (m?) (mm) 20,068 1.73 0.260 0.0224 0.000 94 0.000 723 68 3,660 x 102 0.088 224 0.264 :0.0303 9.2 675 6717.X 10 1.236 x10 0.0411 125 0:001 33 .540 D.0618 15.8 0.002.11 3.960 x10 287 B 0687 :209 0003 70 3437 x 10 25 1315, 32 338 1049 0.0874 26.6 0:006 00 5.574 X 10 482 35.1 0.010 39 9.653 X10 40 1.900 S83 04342 20.9 0014 14 1314 x 10 2168 x 10 50 2375 0.154 0.023 33 525 627 65 02068 0.2557 25 2.875 73.0 0.203 246 0033 26 3.090 x 10 80 3.500 889 0.216 :0.051/32 A768 x 10 90 4.000 101.6 0.226 E:74 8543 90.1 6.381 x 10 0.068 68 100 4.500 114.3 0.237 6.02 4026 1023 0.088 40 8213 x 10 125 5.563 141.3 0.258 6.56 5047 0.4206 1282 0.1390 1.291 x 10 150 6.625 168.3 0.280 7.11 8.065 05064 154.1 0.200 6 1.864 x 10 200 8.625 219.1 0.322 B18 7.981 0,6651 202.7 0.347 2 3.226 x 10 10 250 10,750 273.1 0.365 9.27 30.020 0.8350 254.5 0.547 9 5.090 x 10 12 12.750 323.9 0406 10.31 11.938 0.9948 303.2 0.777 1 7.219 x 10 300 14.000 14 350 355.6 0437 1110 3.126 1.094 333.4 0,939 6 8.729 x 102 16.000 406,4 0.500 12 70 15.000 1,250 381.0 1 227 01140 16 400 18 450 18:000 4572 0.562 14.27 16.876. 1.406 428.7 1553 0.1443 500 20.000 18.814 1.568 477.9 1.931 0.1794 508.0 609.6 20 0.593 15.06 24 600 24.000 0.687 17.45 22.626 1.886 574.7 2.792 0.2594

Answer rating: 100% (QA)

Guiven that volume flow rate 1500 gal Imin Q 3341 ftSec 3D Energy lon... View the full answer