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HowTo: Self Powered Electrolizer with Mechanical Filters


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So, SPOM or not spom, this is a self powered build I tend to use in my games now.  It's rather compact, works relatively well, and can be built with a minimum amount of frustration, at least for me.  I figured I'd share.

This is the end result you're looking for:

 

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It all starts with building up the shell you'll be using:

 

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Then, you'll put in the equipment, then hook up the power and the automation wires.

 

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Once all that's ready, then we get into the nitty gritty on getting the mechanical filter setup and primed with a normal filter, then removing the normal filter.  First we'll setup the powered filter to the dump vent and the Hydrogen line.

 

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Next we'll setup two valves, lower one at 499g/s, upper at 1g/s.  The 499 g/s helps to make sure that we don't run into clog problems.  It's typically more important with a 999 g/s setup, but I'm overly cautious.  The upper 1 g/s one is the filter loop.

 

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Next up we setup the priority pathing for our 3 bridges.  Lower right is to bring hydrogen into the filter loop, middle top is for the hydrogen power source, far left is to dump excess Hydrogen elsewhere.

 

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Build out your lines for the power and hydrgogen excess.

 

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Get the system going while you seal in the electrolizer to a single square.  Start pumping out the non Hydrogen.

 

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Eventually you'll get hydrogen into the filter loop on top.  You can shut down here when you've got all four squares in the loop with Hydrogen.  If something went horribly wrong, set the loop to 0 g/s, clear it, and try again.  Shouldn't be an issue with the powered filter though.

 

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Finally, strip out the powered filter components, and add in the line from the pump to the 499 g/s valve.

 

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1 hour ago, suicide commando said:

Nice guide, but I think I'll stick with a 'proper' SPOM myself. As your setup doesn't allow for any cooling of the O2 you're producing.
 

I prefer solutions without cooling as I can then chose between a variety of cooling options, and more importantly you often don't need to cool all the oxygen at all. Only the oxygen you sent into your base needs to be cooled. The oxygen dupes use in exosuits doesn't need cooling so in an advanced build where your dupes will spend considerable time in exosuits you may only need to cool half your oxygen saving a lot of bother.

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Wow, that is way more complicated than a standard spom.  Why all of the valves?  Why put the generator inside the hydrogen? Why is it left open?  Aren't the two oxygen pumps wasting power sucking back up oxygen from outside?

 

2 hours ago, Saturnus said:

Only the oxygen you sent into your base needs to be cooled. The oxygen dupes use in exosuits doesn't need cooling so in an advanced build where your dupes will spend considerable time in exosuits you may only need to cool half your oxygen saving a lot of bother.

Obviously you branch the hot oxygen off to the exosuit dock before it is cooled.

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15 minutes ago, suicide commando said:

You'd have to insulate the pipe with the hot O2 running al lthe way to the Exosuits  in that case. Which means you either have a very long insulated pipe, which requires a lot of extra materials, or you have to put your SPOM near your exosuits.

A valid point. However, I typically have a gazillion tons of igneous rock I have no other use for so I make all pipes insulated (unless they really need to be insulated in which case I use regular pipes of abyssalite) and insulated tiles (again, unless they really need to be insulated or I need the decor value). This serves two purposes. It removes debris the dupes don't need to pick up and store, and it converts (typically) warm or hot igneous rock into a material that is magically 20C no matter what the temperature was before.

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4 hours ago, psusi said:

Wow, that is way more complicated than a standard spom.  Why all of the valves?  Why put the generator inside the hydrogen? Why is it left open?  Aren't the two oxygen pumps wasting power sucking back up oxygen from outside?

Valves are for the mechanical filter, saves you 120W instead of the powered filter.

I wanted the electrolizer to be self contained so I can move it anywhere, and have the electrolizer be the power priority.  There's only a few ways to enforce the power being the priority for the O2 generation, so I choose this one.

The two oxygen pumps aren't part of the design, but are part of the O2 distribution system I like to use.  You'll notice I don't actually build those in the layout.  It depends on where I've built the Electorlizer and if I need to use distribution or let it drift.

8 hours ago, suicide commando said:

Nice guide, but I think I'll stick with a 'proper' SPOM myself. As your setup doesn't allow for any cooling of the O2 you're producing.
 

The granite wall against the Hydrogen generator has a bridge placement so you can run an radiant gas/liquid pipe through it for cooling if so desired.

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5 hours ago, WanderingKid said:

Valves are for the mechanical filter, saves you 120W instead of the powered filter.

Why valves?  If it is enclosed, you can just use a pressure sensor to turn on the hydrogen pump once there is enough hydrogen built up.

5 hours ago, WanderingKid said:

I wanted the electrolizer to be self contained so I can move it anywhere, and have the electrolizer be the power priority.  There's only a few ways to enforce the power being the priority for the O2 generation, so I choose this one.

What?  I don't understand this at all.

 

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1 hour ago, psusi said:

Why valves?  If it is enclosed, you can just use a pressure sensor to turn on the hydrogen pump once there is enough hydrogen built up.

What?  I don't understand this at all.

 

Because after the first one is built and is setup to kick out extra hydrogen, I can use that to feed other ones the filter without having to use the powered filter.  It's free, and once it's built it it's ready to go whenever I kick it on.

I could have phrased it better.  So, power doesn't obey any kind of priority.  If you plug in 1000w of items and only have 800 power, those 200 watts have to lose somewhere.  This priority for power changes on reload, it's not consistent.

So, by using a local Hydrogen Generator for the power for only the self contained O2 production, I make sure it always has priority because there's nothing else that can attach to it.  By using the bridges the way I do, the O2 containment is always the first to get more hydrogen for power, and then I ship the excess to another generator that will pick up the remaining Hydrogen for other equipment.

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ugh, i need smart batteries....gah! do i need* a smart battery for this?

Hmmm but so I could manually toggle this at the start of a cycle, that works for me, until i do auto. this is great ty!

My build happens to be just at the 800 w threshold so it would only charge a batt or two. This may work...

I am wondering if this thing could be kick started with my starter wheel each morning, just with a long extension cord.

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16 hours ago, Slvrsrfr said:

ugh, i need smart batteries....gah! do i need* a smart battery for this?

You don't need a smart battery for anything.  There are a lot of different ways to accomplish the same thing.  That being said.. smart batteries make it very simple to conserve power

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This is too complicated for my little head.

I don't understand what the first gas valve is supposed to do. Its intake is not connected?

Spoiler

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The wiki page about it says that it helps to direct the gas flow inside the pipes, but the H is going towards it and not away.

I am lost

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