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<But the pump has to do the work to overcome the losses around the loop>
I understand that, but I thought that had a different label. Like head pressure to me always represented the pressure produced by a column of water - potential energy. Pressure produced by a pump to pump water uphill or round and round real fast I would have labeled "pump pressure" or "kinetic pressure" or something like that to connote kinetic energy.
But then I'm not sure how much clarity is gained by the distinct labels ... Jim S.
Al Gietzen wrote:
Rusty,
I only heard today that Al G. had flow data on his dyno. He might have some ideas around this. As to head pressure, I believe I was taught that head pressure only exists in an open system. In a closed system it all cancels out going around the circle.
But that was a long time ago ... Jim S.
Sorry; but there ain't no free ride; that would be tantamount to perpetual
motion. Yes, if you add all the losses and offset it with the boost across
the pump, it equals zero. But the pump has to do the work to overcome the
losses around the loop. No pressure across the pump - no flow.
Al
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