Codex Processing Electrolyzer

Electrolyzer

The Electrolyzer window: 5 energy and tank bars, 6 value, status and redstone lines, 7 buttons (redstone mode, telemetry, codex).

The Electrolyzer splits water into hydrogen and oxygen with energy. Switched to fuel cell mode it does the reverse: it burns hydrogen and oxygen back into water and gives out energy. It is the simplest source of both gases and needs only early parts.

Electrolysis

Water and energy go in, hydrogen and oxygen come out, always in the ratio 2 : 1:

• Every millibucket of water takes 100 E and gives 10 mB of hydrogen and 5 mB of oxygen.
• At most 5 mB of water per tick, so at full speed it draws 500 E per tick.
• It splits only as much as the water, the energy and the room in both gas tanks allow. When one gas tank is full, it stops; pipe both gases away.

There is no recipe and no progress: the work happens every tick.

Fuel cell

Press "Switch mode" and the Electrolyzer becomes a fuel cell:

• 10 mB of hydrogen and 5 mB of oxygen become one millibucket of water and 50 E, half the energy the electrolysis needed.
• At most 5 mB of water per tick (250 E per tick), and only as far as the 2 : 1 ratio of the gases allows.
• The energy is pushed into every neighbour that takes energy, at most 1,000 E per tick, and cables can draw it as well. The fuel cell stops when its output buffer or the water tank is full.

The fuel cell turns gas back into power, but every round trip through electrolysis and fuel cell loses half the energy.

Sides

Every side does everything, but the direction follows the mode:

	Electrolysis	Fuel cell
Water	in (only water)	out
Hydrogen and oxygen	out	in
Energy	in	out

Switching the mode turns the sides around at once; connected pipes and cables see the change.

The screen

• Water and energy bars on the left; in fuel cell mode the energy bar shows the output buffer.
• Hydrogen and oxygen bars on the right.
• "Water used": the water split (or made) in the last tick, in mB per tick.
• The "Switch mode" button, "Fuel cell output" (energy made per tick) and the mode line: "Electrolysis (water → H₂ + O₂)" or "Fuel cell (H₂ + O₂ → energy)".

The tanks hold 8,000 mB of water, 32,000 mB of hydrogen and 16,000 mB of oxygen. The input buffer holds 100,000 E and takes up to 2,000 E per tick; the fuel cell's output buffer holds 20,000 E.

The Electrolyzer has no upgrade slots, no redstone mode and no status line.

What the gases are for

• Hydrogen with nitrogen from the Air Separator becomes ammonia in the Chemical Reactor; hydrogen is also a fuel gas for the gas-burning generators.
• Oxygen turns ammonia into nitric acid in the Chemical Reactor and silicon into quartz in the Crystallizer.

Building it

The Electrolyzer needs iron plates, redstone, two copper wires, glass and a bucket.

	Redstone Dust
	Glass		→ Electrolyzer
	Bucket

When you break it, it keeps its water, both gases, both energy buffers and its mode.

In the world

While it splits water (or makes water as a fuel cell), the fan at its back turns.

Tip

Oxygen surplus Ammonia takes only hydrogen, so oxygen piles up. Store the oxygen in a Gas Tank or use it elsewhere, otherwise the full oxygen tank stops the hydrogen as well.