Objects to invent!

[Forhorse]

On the last video the input and output of the pump which supposedly acts as a compressor are reversed compared to what they should be on a functional circuit.

[Christophe]

How do they make the evaporator freeze up then? With a reverse hair dryer?

[oli 80]

Re,
These are the 3 videos from 3 different YouTube channels,
the assemblies are very similar plus they are all recent

[Petrus]

I haven't watched the videos, I don't want to waste time with fake videos. I think the cold is just produced by the evaporation of the gas in the atmosphere, the thing can work once but that's it then you have to recharge.

[phil59]

Once, on an LPG car, old, very old, and with poor starting, I had the vapor freeze on the surface.... (I only started with LPG, no more fuel pump ).

[Forhorse]

How do they make the evaporator freeze up then? With a reverse hair dryer?

Not complicated to have a little hidden pipe (the joys of video editing) to bring in a little gas which evaporates (no need to look for a complicated/rare gas, butane does the trick)
It's on the same level as the "free energy" videos which show that if you drive an alternator with a motor and you loop the electrical circuit then it produces infinite energy...