1. Permanent gas machines

In paragraph 2.3 of article [BE 8 095] Cold production and heat recovery: general principles Two permanent gas machines were considered:

• the The Stirling machine has applications in the cryogenic field (production of oxygen and liquid nitrogen);

• the Brayton-Joule machine with applications in air conditioning, particularly for aircraft.

The machines we're going to consider now stand out from their predecessors for their...