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Author Topic: Large Salt water battery ideas and questions  (Read 52798 times)

Offline profitis

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Re: Large Salt water battery ideas and questions
« Reply #60 on: August 20, 2013, 02:07:53 AM »
add more @mungo.how much did you add.if you had a milliampmeter attatched you would now see drastic increase of current despite voltage drop.ie.total power density way way up

Offline tom42

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Re: Large Salt water battery ideas and questions
« Reply #61 on: July 25, 2014, 10:18:51 PM »
Wouldn't a shunt-wound or stepper motor be inherently more efficient than a series motor? .Brush life is also a concern

Offline Paul-R

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Re: Large Salt water battery ideas and questions
« Reply #62 on: July 26, 2014, 03:59:46 PM »
... with a generator backup to drive a paddle (stern) wheel
They can be very inefficient.

A propeller specified for the chosen RPM and the speed you will prefer to travel at might well be much better.

Offline tom42

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Re: Large Salt water battery ideas and questions
« Reply #63 on: July 28, 2014, 11:17:01 PM »
What are the waste products of a magnesium/salt/carbon(?)  battery? Isn't hydrogen one of them? How is its explosive nature handled?

Offline MarkE

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Re: Large Salt water battery ideas and questions
« Reply #64 on: July 28, 2014, 11:33:23 PM »
They do emit H2 gas like a lot of batteries do.  It is not a problem unless you are making a big cell and/or the cell is in a highly confined place.    The other waste product is basically milk of magnesia.