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How much compressed air (air flow rate) and air pressure do we need to generate 50 GPM at 60 psig when using the AODD pump shown in previous slide?

AODD Performance Curve BAR FEET PSIG 300 20) 134 8-275- 120 250 AIR CONSUMPTION (SCFM) INnmh) (40)? 7 61 200 5-175 225-100 80 60 (80) [136) (100) 1170 150 125 3- 1001 40 75 5020 25 160 GPM [min] 40 80 120 200 (303] [454]606 758] Water Discharge Flowrates

science   Advanced-Physics   
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Answer #1

The performance curve here, for an Air Operated Double Diaphragm Pumps (AODDP) indicates the correct amount of air pressure (PSIG, pounds per square inch gauge) and air consumed (SCFM, standard cubic feet per minute) to deliver a required flow rate against a discharge head.

The air consumption is indicated by the darker lines on the chart while the lighter ones show the required air pressure.

Now it can be easily read from the chart that at 50 GPM and 60 PSIG( 4.1bar) the compressed air needed is 40 SCFM and the required air pressure is 80 PSIG.AODD Performance Curve BAR FEET PSIG 300 20) 134 8-275- 120 250 AIR CONSUMPTION (SCFM) INnmh) 40) (68 102 (80) [136) 7 225-100 61 200 5-175 80 (100) 1170 150 125 3- 1001 40 75 5020 25 120 160 GPM [Umin] 40 80 200 (303] [454]606 758] Water Discharge Flowrates

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