In absorption refrigeration systems, what components fulfill the functions typically handled by compressors in compression systems?

In absorption refrigeration systems, the functions typically handled by compressors in compression systems are performed by the absorber, generator, and generator pump.

The absorber takes in the refrigerant vapor and absorbs it into the absorbent solution, effectively reducing the pressure in the system similar to how a compressor would compress vapor. The generator then heats this solution, causing the refrigerant to vaporize and separate from the absorbent. This process allows the system to circulate the refrigerant, akin to the compressive action in traditional refrigeration cycles. The generator pump circulates the absorbent solution back to the absorber, maintaining the necessary flow and balance in the system.

This trio of components mimics the compression and circulation process, leveraging temperature and pressure changes to facilitate refrigeration rather than relying on mechanical compression as in traditional systems. This makes them integral in enabling the absorption refrigeration cycle to function properly.