Nat gas pressure drop vs. pipe length
On Jan 8, 10:37*pm, "NotMe" wrote:
"Existential Angst" wrote in message
...
OK, took delivery of a 15,000 W tri-fuel generator, with a Honda GX690
motor, 690 cc, about 22 hp.
Couldn't get it to run off propane, cuz their regulator (that attaches to
the tank itself) seems to be faulty. Haven't tried gasoline yet.
So I was able to kluge together a nat gas connection, some distance away,
via a 50 ft coil of 3/8 id air hose.... *yeah, I know, I know, chill, it
was just a test.....
Generator ran fine, and I was a little surprised, given the narrow id and
rel. long hose length. *Under no-load conditions.
So here's the Q:
* With typical natural gas pressure (I'm sposing 5-7" water), how much
actual load (hp) can be powered with 1/2" black pipe, of negligible
length? Or, per actual sq in of pipe cross section. * And then, how would
that power capacity drop off with pipe length?
This will affect the size of the piping, and poss. the location of the
unit.
Tomorrow, I will wire up some temp. elec connections, and load as many
heaters etc as I can, to see if I can detect some fuel-bottleneck under
heavy load, thru 50 ft of 3/8" hose. *If there is no perceptible
bottleneck, then long-ish lengths of 1/2" pipe should be fine, 50 ft max.
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