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​​In these pictures, the liquid oxygen is on the left and liquid hydrogen on the right.


Liquid oxygen

Hydro sensor to gas shutoff: below 450

Hyrdro sensor to liquid pump: above 250

Liquid pipe thermo sensor: above -190

Liquid valve: 9000g/s

Liquid hydrogen

Hydro sensor to gas shutoff: below 850

Hyrdro sensor to liquid pump: above 250

Liquid pipe thermo sensor: above -255

Liquid valve: 9000g/s

Build materials:

Make the aquatuners out of steel

Use ceramic for the insulated liquid pipes

Use super coolant in the liquid cooling loops

Use ceramic insulated tiles for the "T" section of wall in-between the liquid oxygen, liquid hydrogen, and aquatuner room (preferable but not necessary)

Use hydrogen in the steam turbine cooling loop


The steam turbine can only handle the initial cooling down of one liquid at a time, so fire up the oxygen and hydrogen separately. (Once running it can handle both.)

The pumps need to be running constantly to prevent damage from state changes.


Keep the liquid reservoirs in a vacuum. To be extra safe regarding temperature transfer, build the liquid reservoirs on mesh tiles.

This design uses a self-cooling method for the steam turbine If you implement this cooling method, run the gas pipes through the wall of the liquid oxygen section of the build, not the liquid hydrogen section.

This design uses a pool of liquid oxygen and hydrogen (in the area around the liquid pumps) to even out temperature fluctuations from the aquatuner cooling the gases.

In the guide linked below  you can also see a presentation of a larger version of this build.

Design by Francis John

Source: "Liquid Oxygen and Hydrogen : Tutorial nuggets : Oxygen not included", by Francis John. Available at:, accessed 6 September, 2020

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