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Re: moorea9 post# 11322

Sunday, 08/31/2014 8:10:12 PM

Sunday, August 31, 2014 8:10:12 PM

Post# of 57170
Moorea9, if Alkalinesolution1's last post is right, with each AOT the pumps would gradually adjust to put through more oil for the same amount of liquid horsepower. This would be possible because of the incremental pressure drop with each AOT.
BUT
Lets say we know that each pump is good for the next 40 miles and each AOT is good for the next 40 miles. The last 40 miles segment on a 1,000 miles pipeline (with 25 stations) is missing an AOT. The reduced head loss would create a bottleneck. Therefore the last pump would have to be running at a lower throughput. Because of the law of conservation of mass, that pump would dictate the behavior of all the upstream pumps. Maybe we should be saying that the weakest link or the biggest bottleneck or the largest head loss dictates the system flow rate.
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