The handbook of Technical irrigaTion informaTion - Hunter Industries

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Handbook of Technical Irrigation InformationScreen Filter Mesh EquivalentsMesh Size Microns Inches mm4 5205 0.2030 5.166 3175 0.125 3.188 2487 0.0970 2.4610 1923 0.0750 1.9011 1778 0.070 1.7814 1307 0.0510 1.3018 1000 0.0394 1.0020 840 0.0331 0.8424 813 0.032 0.8125 710 0.0280 0.7130 590 0.025 0.5935 500 0.0197 0.5040 420 0.0165 0.4245 350 0.0138 0.3550 297 0.0117 0.3060 250 0.0098 0.2570 210 0.0083 0.2180 177 0.0070 0.18100 149 0.0059 0.15120 125 0.0049 0.12140 105 0.0041 0.10170 88 0.0035 0.08200 74 0.0029 0.07230 62 0.0024 0.06270 53 0.0021 0.05325 44 0.0017 0.04400 37 0.0015 0.04550 25 0.0009 0.02800 15 0.0006 0.011250 10 0.0004 0.01Screen Mesh Sizes Compared to 0.020 Inch Orifice0.020" Orifice2001501008080 Mesh = 177 Microns100 Mesh = 149 Microns150 Mesh = 104 Microns200 Mesh = 74 Microns60
TablesPumpHorsePowerAverage KilowattHour InputSinglePhaseThreePhaseSinglePhaseApproximate Cost of Pump OperationApproximate Cost of Operation per Hour at Kilowatt Hr. Rate of:$.0150 $.0200 $ .0250 $ .0400 $.0500 $.0600 $.0800 $.1000 $.1200ThreePhaseSinglePhaseThreePhaseSinglePhaseThreePhaseSinglePhaseThreePhase¼ 0.305 0.0046 0.0062 0.0078 0.0122 0.0153 0.0183 0.0244 0.0305 0.0366¹⁄₃ 0.408 0.0062 0.0082 0.0103 0.0163 0.0204 0.0245 0.0326 0.0408 0.0490½ 0.535 0.520 0.0081 0.0078 0.0108 0.0104 0.0135 0.0130 0.0214 0.0208 0.0268 0.0260 0.0321 0.0312 0.0428 0.0416 0.0535 0.0520 0.0642 0.0642¾ 0.760 0.768 0.0114 0.0116 0.0152 0.0154 0.0190 0.0193 0.0304 0.0307 0.0380 0.0384 0.0456 0.0461 0.0608 0.0614 0.0760 0.0768 0.0912 0.09221 1.000 0.960 0.0150 0.0144 0.0200 0.0192 0.0250 0.0240 0.0400 0.0384 0.0500 0.0480 0.0600 0.0576 0.0800 0.0768 0.1000 0.0960 0.1200 0.11521½ 1.500 1.42 0.0225 0.0213 0.0300 0.0284 0.0375 0.0335 0.0600 0.0568 0.0750 0.0710 0.0900 0.0852 0.1200 0.1136 0.1500 0.1420 0.1800 0.17042 1.980 1.83 0.0297 0.0275 0.0396 0.0366 0.0495 0.0458 0.0792 0.0732 0.0990 0.0915 0.1188 0.1098 0.1584 0.1464 0.1980 0.1830 0.2376 0.21963 2.95 2.70 0.0443 0.0405 0.0590 0.0540 0.0738 0.0675 0.1180 0.1080 0.1475 0.1350 0.1770 0.1620 0.2360 0.2160 0.2950 0.2700 0.3540 0.32405 4.65 4.50 0.0698 0.0675 0.0930 0.0900 0.1163 0.1125 0.1860 0.1800 0.2325 0.2250 0.2790 0.2700 0.3720 0.3600 0.4650 0.4500 0.5580 0.54007½ 6.9 6.75 0.1035 0.1013 0.1380 0.1350 0.1725 0.1688 0.2760 0.2700 0.3450 0.3375 0.4140 0.4050 0.5520 0.5400 0.6900 0.6750 0.8280 0.810010 9.3 9.0 0.1395 0.1350 0.1860 0.1800 0.2325 0.2250 0.3720 0.3600 0.4650 0.4500 0.5580 0.5400 0.7440 0.7200 0.9300 0.9000 1.1160 1.080015 12.8 0.1920 0.2560 0.3200 0.5120 0.6400 0.7680 1.0240 1.2800 1.536020 16.9 0.2535 0.3380 0.4225 0.6760 0.8450 1.0140 1.3520 1.6900 2.028025 20.8 0.3120 0.4160 0.5200 0.8320 1.0400 1.2480 1.6640 2.0800 2.496030 25.0 0.3750 0.5000 0.6250 1.0000 1.2500 1.5000 2.0000 2.5000 3.000040 33.2 0.4980 0.6640 0.8300 1.3280 1.6600 1.9920 2.6560 3.3200 3.984050 41.3 0.6195 0.8260 1.0325 1.6520 2.0650 2.4780 3.3040 4.1300 4.956060 49.5 0.7425 0.9900 1.2375 1.9800 2.4750 2.9700 3.9600 4.9500 5.940075 61.5 0.9225 1.2300 1.5375 2.4600 3.0750 3.6900 4.9200 6.1500 7.3800100 81.5 1.225 1.6300 2.0375 3.2600 4.0750 4.8900 6.5200 8.1500 9.7800SinglePhaseThreePhaseSinglePhaseThreePhaseSinglePhaseThreePhaseSinglePhaseThreePhaseSinglePhaseThreePhaseNote:To calculate approximate cost of operation at a cost factor not listed above, multiply the second columnrate of $.02 per KWH by the actual rate in effect, and then divide by 2.Example:the cost of operating a 3 hp single phase pump at a rate of $0.07 per KWH would be.0590 x 7 ÷ 2 = $0.2065 per hourThese charts are based upon 100% motor efficiencies.To determine actual cost factors, divide by actual pump and motor efficiency, as indicated above.61
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Th e H a n d b o o k o fTe c h n i
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ContentsFORMULASGeneralSlope . . .
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Table of ContentsReference Tables o
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Handbook of Technical Irrigation In
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Formulas - HydraulicsFriction Facto
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Page 101 and 102: Friction Loss ChartsNominalSizeAvg.
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Friction Loss ChartsNominalSizePipe
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