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Russell Duffy wrote:
I don't see what condition could possibly give me a 20 GPM flow from this
pump.
Hi again. I was just thinking about this, and wondering how they get the
flow ratings that they give. What would happen if you connected the inlet,
and outlet together, with a hose, completely filled with water.
First, I would like to thank Bob for doing these tests and sharing the results. My plan over the past couple of weeks has developed into a 1" pipe out of the engine (through an adapter made from a block of aluminum donate by Kevin), into a swirl pot. Split from there into two 3/4" pipes to seperate EWPs. Individual rads then a Y adapter with a flapper. Out of that into a 1" pipe back to the engine.
Second, I think Rusty has a good point here. There is a significant amount of energy invested in accelerating the water in these static test. Energy that is lost when it drops in the bucket. In the closed circuit of the engine, SOME of it will be recovered, but the drag through the engine is unknown, varies with the amount of flow, and is very non-linear.
Is it possible to design any test that would be relevant, other than a flowmeter with the actual engine, swirlpot and radiators in the loop? Bob's numbers sound like they would work for me (30GPM is the mininum right?), but only if there would be significant flow recovery from the loop.
--
http://www.ernest.isa-geek.org/
"This is by far the hardest lesson about freedom. It goes against
instinct, and morality, to just sit back and watch people make
mistakes. We want to help them, which means control them and their
decisions, but in doing so we actually hurt them (and ourselves)."
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