1. Driving energy:
Ammonia refrigeration: mainly consumes electrical energy (to drive the compressor).
LiBr absorption refrigeration: mainly consumes thermal energy (steam, hot water, gas, waste heat, solar energy, etc.), and only requires a small amount of electrical energy to drive the solution pump and vacuum pump.
 
2. Refrigeration temperature range:
Ammonia refrigeration: has a very wide range of applications and can realize refrigeration needs from low temperatures (deep cold, e.g. -70°C or even lower) to air-conditioning temperatures (around +10°C). Particularly good at low temperature applications.
LiBr absorption refrigeration: mainly used in the air-conditioning temperature range (chilled water outlet temperature usually ≥ 5°C). Refrigeration below 0°C is difficult to achieve due to the freezing point of water. The chilled water outlet temperature of single-effect units is usually above 7°C, and double-effect units can achieve about 5°C.
 
3. Application Scenario:
Ammonia refrigeration: widely used in occasions requiring low and medium temperature refrigeration, it is the technology of choice for large-scale industrial refrigeration, food freezing and cold storage (cold storage, quick-freezing, processing), chemical refrigeration, ice rinks and so on. In recent years, it has also been used in the field of large-scale commercial refrigeration and air conditioning.
LiBr absorption refrigeration: It is mainly used in central air-conditioning systems of large buildings (e.g. hotels, hospitals, shopping malls, office buildings, factory workshops), and is particularly suitable for occasions where there is waste heat, waste heat (e.g. power plants, chemical plants, iron and steel mills), cheap steam or natural gas supply. It is also commonly used in air-conditioning systems driven by solar energy, and is not suitable for low-temperature applications.