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 Post subject: Re: Fuel Purification
PostPosted: Tue Feb 14, 2017 7:36 am 
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Joined: Sun Jul 06, 2008 1:04 pm
Posts: 1104
Location: the Retirement Coast, NSW, Australia
DED wrote:
A better option this far out from the warmth of stars is our good friend methane. Methane is a liquid below 112 K (-161.5 C) and a solid at 91 K (-182.5 C). In between, you might find methane slush.

What process are you going to use to produce hydrogen from methane? You can't electrolyse methane.

Steam reforming requires water and a heat sink. Autothermal reforming requires molecular oxygen, either carbon dioxide or water, and an energy source. Partial oxidation requires oxygen. I think they all need catalysts.

— Brett Evill

My SFRPG setting, Flat Black

© My posts on SFRPG must not be reproduced beyond the board except with explicit permission from me.

 Post subject: Re: Fuel Purification
PostPosted: Sun Feb 19, 2017 2:55 am 

Joined: Sun Sep 07, 2008 12:06 am
Posts: 361
The Civil Engineering company that I work for had a project to design a large scale sewer treatment plant as a test case for a new filter technology. Raw sewage enters one end and the water molecules disassociate and are absorbed into the molecular matrix of the filter where they cause another water molecule to be ejected from the material at the opposite surface. Either a temperature or pressure differential was capable of driving the water through the membrane. The process converted sewage into 'distilled' quality drinking water (although the application was only for sewer treatment).

Purifying the water for electrolysis of the hydrogen might actually be trivially easy at TL 8+ using the basic wastewater recycling system of the ship.

I really love Classic Traveller, especially without the Imperium ... There, I said it.
Now pass me a laser carbine and a couple of extra battery clips.

 Post subject: Re: Fuel Purification
PostPosted: Sun Feb 19, 2017 11:14 pm 

Joined: Sat Sep 01, 2012 2:44 pm
Posts: 194
Location: Colorado
OK, not to detract from the effort...

Each time I've tried to address something in Traveller from a scientific point of view, I've failed. The game/setting just has too many holes in it, I've pretty much given up.

For the original question from the player I'd pull numbers from the back of my brain, I might be tempted to make the times different for skimming gas giants and oceans of water.

Something kinda related that comes to mind when this and other fuel questions come up: it seems common that people visualise the fuel tanks on a Traveller ship as big empty tin cans, kinda like you'd find attached to the chassis of a 1940's pick up!

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