|
Hi Doug.
Oh yes Doug, I will be able to do that in my wetsub battery pod
also.
I too will be able to flow air into my battery pod and exhaust it out also
to carry off some of the hydrogen gas and to preclude any vacuum from forming in
the battery pod while using hydrocaps also.
My original plan was to use a scuba regulator to do this, but I am awaiting
Phil Nuytten's advice of what better and beefier valves would replace my scuba
regulator system that he doesn't think will be safe enough.
But whether I did it with my original scuba regulator plan or with Phil's
beefier valves, the principle is the same.
Air from my tank will flow into my battery pod (attached under the wetsub)
when the water pressure exceeds the air pressure in the battery pod. Then when
the pod is equalized with the outside water pressure the air flow will stop. Now
upon accending the air in
the pod will expand and flow out an overpressure exhaust valve
helping to get rid of some of the hydrogen just like you said. But even if I did
not want to accend, I could manually vent air into the battery pod and the
overpressure exhaust valve would just let it
bubble out of the pod when the pod was equalized with the outside water
pressure and that means I could purge my battery pod of hydrogen whenever I
wanted. Any excess air I shoot into it when it is equalized with the outside
water pressure will
simply come out the overpressure exhaust valve. The weight of my battery
pod will act as a keel to keep me from turning over since the battery pod will
be slung under the wetsub.
If necessary I will add weight to the battery pod to make it somewhat
negatively buoyant if necessary. Even though I vent air into the pod to
equalize it against the outside water
pressure it shouldn't turn over so I wouldn't need the battery pod over my
head for the sub to be stable. With the air equalization system I mentioned
above, I should be able to vent air into my battery pod any time I choose
and purge hydrogen whenever I want to
and it will also automatically do it whenever the pod needs to equalize
against the outside water pressure. So no need to convert to a dry ambient.
I'd like to build a half dry sub one day. Perhaps a modified Kent Markham
Silent runner 2 with a rudder added
because Kent told me he had a hard time overcoming the inertia of his
forward speed to turn using the thrusters built into the dive planes, even when
he reversed polarity on one. But I like his cockpit system and the variable
buoyancy tube system.
But gotta finish this one first.
Kindest Regards,
Bill Akins.
|