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Although not propulsion related, Hydrogen generators are becomming more popular in use with automobiles to improve fuel mileage...Could such a set up be used to generate oxygen for use aboard a small sub to increase dive duration if the hydrogen could be expelled? Sounds like a small version of an o2 generator. David Bartsch From: ojaivalleybeefarm@dslextreme.com To: personal_submersibles@psubs.org Subject: RE: [PSUBS-MAILIST] sterling engine Swedish submarines Date: Tue, 28 Oct 2008 12:49:57 -0700 Jay,
I was thinking for a larger sub like Carsten's, if the engine compartment was a seperate area and the waste heat could be put to good use or disipated with heat exchangers it would an interesting way to go. Do you know the oxygen gas volume difference between liquified O2 and 3000 psi O2? I imagine it is pretty great. The cost of LO2 would be very expensive no doubt.
Brian
-----Original Message-----
From: owner-personal_submersibles@psubs.org [mailto:owner-personal_submersibles@psubs.org] On Behalf Of Jay K. Jeffries
Sent: Tuesday, October 28, 2008 3:31 AM
To: personal_submersibles@psubs.org
Subject: RE: [PSUBS-MAILIST] sterling engine Swedish submarines
Brian,
Oxygen handling is not a trivial issue. There are a number of dive shops that have been laid waste by an O2 explosion and they were only handling intermediate pressure oxygen (i.e. <2200 psi). Hazards are compounded exponentially once you go above this pressure. Years ago at the first NITROX Conference a NASA engineer made a great presentation on these hazards and how to mitigate them. In a small package such as would be used in a PSUB plant-size efficiency and waste heat rejection in the compartment will become issues also with an implementation of a Sterling system. I keep watching developments though.
R/Jay
Respectfully,
Jay K. Jeffries
Andros Is., Bahamas
As scarce as the truth is, the supply has always been in excess of the demand.
-Josh Billings
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From: owner-personal_submersibles@psubs.org [mailto:owner-personal_submersibles@psubs.org] On Behalf Of Brian Cox Sent: Tuesday, October 28, 2008 12:42 AM To: Personal_Submersibles@Psubs. Org Subject: [PSUBS-MAILIST] sterling engine swedish submarines Hi All,
Has anyone seen the sterling engines that they are using in the Swedish submarines now? It sounds like they have really come along way. I wonder how far one could go using only High pressure oxygen rather than liquid oxy ?
Check out link
Brian
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