Oxygen liquefaction, without space materials

The materials are simple and relatively easy to build.

There will be 2 schemes:
 * 1) With self-cooling (but it requires very cold oxygen at the inlet - no higher than +10 ° C).
 * 2) With cooling with running water (100 g/s is enough), and oxygen at room temperature.

Option 1 (with self-cooling)






Option 2 (with water circuit)
General appearance, gas layer and automatics are the same for both variants.

Materials

 * Cladding: Mafite rock/ceramic (in a vacuum anything).
 * Gas pipes: ceramic at O2 valve and Aquatuner are better (but you can have any).
 * Wires: any kind.

Sensors

 * Hydrosensor pump - any value (I have from 250kg).
 * Thermosensor -190ºC (it may be necessary to adjust it to the temperature of your oxygen).
 * Gas valve - 250gr (you may have to lower it to your parameters).

Startup

 * 1) Create a vacuum (or without a vacuum).
 * 2) Pump hydrogen 10 kg/cell.
 * 3) Wait for the temperature sensor to activate.
 * 4) Start oxygen.

From here on it works in automatic mode.

At the stage of "acceleration" (primary cooling of hydrogen to -190ºС), the circuit can be lengthened by adding 2 more TRs (Thermo Regulator), so as not to wait long.

Performance of the circuit can be significantly improved by adding more TRs for oxygen pre-cooling (1...5 pieces, as much as you can spare).

Blueprint
Liquefaction О2