Explanation:

Introduction:
In the absorption refrigeration cycle, the compressor of the vapor compression refrigeration cycle is replaced by an absorber, liquid pump, and generator. This modification allows for the utilization of heat energy instead of mechanical work to drive the refrigeration process.

Components:
- Absorber: The absorber is where the refrigerant vapor from the evaporator is absorbed into a liquid absorbent. This process releases heat, which helps in the cooling of the refrigerant.
- Liquid Pump: The liquid pump is used to pump the diluted absorbent from the absorber to the generator. This requires energy input, typically in the form of electricity.
- Generator: The generator is where the absorbed refrigerant is separated from the absorbent through the application of heat. This heat can be provided by various sources such as natural gas, solar energy, or waste heat from industrial processes.

Working Principle:
- The refrigerant vapor is absorbed by the absorbent in the absorber, producing a diluted absorbent solution.
- The liquid pump then pumps this diluted absorbent solution to the generator.
- In the generator, heat is applied to the diluted absorbent solution, causing the refrigerant to vaporize and separate from the absorbent.
- The refrigerant vapor is then condensed in the condenser, releasing heat to the surroundings.
- The absorbent, now enriched with refrigerant, is returned to the absorber to repeat the cycle.

Advantages:
- Absorption refrigeration systems can be powered by waste heat or renewable energy sources, making them more environmentally friendly.
- They have lower energy consumption compared to vapor compression systems in certain applications.
In conclusion, the absorption refrigeration cycle replaces the compressor with an absorber, liquid pump, and generator, allowing for a different method of driving the refrigeration process.