3. Absorption heat pumps

Readers are referred to the article [6] in Techniques de l'Ingénieur.

The aim is to reduce the consumption of mechanical (i.e. electrical) energy by substituting it with heat consumption at higher or lower temperatures.

To make the transition from low to high pressure less labor-intensive, liquid-phase pressurization is used instead of gas-phase compression.

Like the compression cycle, the absorption cycle comprises the four phases of compression, condensation, expansion and evaporation (figure 16 ). Instead of being mechanical, compression is thermochemical. To achieve this, absorption machines use the affinity of two fluids: a refrigerant...