Absorption refrigeration is an established technology that uses low-quality heat (e.g., hot water or low-pressure exhaust gas) rather than electric power to drive the cooling cycle.

Absorption refrigerators change the gas into a liquid by employing only heat, with no moving parts other than the refrigerant gas, which goes around in a circle of tubes.

Advantages of absorption refrigeration systems

• Reduced operating costs as opposed to the conventional system
• Eradicates use of harmful chlorofluorocarbons and other refrigerants
• The operation is safer and quiet
• The system has low maintenance cost
• Provides a useful application for heat recovery from almost any system
• The payback period is short due to high impact on energy savings.