3. Compressors

The [BE 9 741] dossier reviews the most recent major machines used in refrigeration circuits. The descriptions represent their current state of technological development. The period of technological innovation that some believe began in the 1970s was influenced by major events:

• the first oil crisis in 1973, which kick-started the race to save energy;

• international competition, which has stimulated technological development;

• the emergence of IT tools for research, modelling,...