Homemade/DIY R290 based refrigerant

The life-blood of any refrigeration system is the refrigerant. Here is my process I came up with for making my own refrigerant.

Tips:
Checking your tank level is easier with a thermal camera.

Notes:
When I do this again, Ill add desiccant before the compressor.

The suction line into the compressor must be vacuum tight, or it will just fill your tank with compressed air, increase the pressure until you can't get any more refrigerant. This is why I ran a solid copper tube into the balloon.

This refrigerant doesn't have the exact properties of R290 refrigerant. It instead is a blend of ~90% Propane(R290), ~5% Propylene(R1270), and a few % of other gasses such as isobutane(R600), Butane(R600a).

[tomgrant]

Interesting vid. I've been investing refrigerants myself and recently tried putting camping propane in an r32 mini split. It works maybe half capacity. I'm planning to try a commercial blend next, which is a blend of propylene and ethane designed to replace r32.
I didn't dry my propane at all and I left the odorant in it. I think it's methyl mercaptan.

[TheMinecraftACMan]

When you put it into a system, charge it through a filter-drier. You can get them with 1/4" flare connections for easy use with a manifold gauge set.

[tomgrant]

Can't you just leave the odorant in? Does it damage the compressor windings or something?

[smoke_stackz]

Is that pure propane? Cant find here in my country they only sold 60butane and 40propane mix

[portable_wall]

why not fill that empty bottle with silica beads