Hi, I'm going to build a Joule Thomson Air Liquefier for my research,

I will use 7 Bar air compressor, I wonder is that pressure enough to operate.

 

Stages

1. Air Inlet and compressed to Primary Cooling Core

2. Primary Cooling Core (This is Coolant, which are filled with Dry Ice, Ethanol)

3. Main Cooling Tower

4. Liquid Air Output

5. Regeneration

Is this even a thread?

What temperature are you cooling the air down to and which gas are you planning to liquify?

Even if the expansion produced work, 7bar to 1bar would cool a diatomic gas (a perfect one, but the Joule-Thomson effect is small) to only 170K, not enough to liquefy oxygen nor nitrogen.

 

The Joule-Thomson effect relies on gas imperfection, but typically the effect is smaller than the expansion of a perfect gas producing work.