Recover waste heat by installing a de-superheater
Ammonia refrigerant will exit the compressor as a superheated vapor and is then sent to a cooling tower to be converted to a saturated-liquid state. Instead of dumping the thermal energy released during this process to the atmosphere, a heat exchanger (in this case, a de-superheater) can be included in the loop to remove a large quantity of the heat from the ammonia. This excess heat can be used in other processes such as preheating combustion air for a boiler system.
Compress ammonia to the lowest possible pressure
While the pressure of the ammonia leaving the compressor needs to be above a certain level in order to maintain the cooling load of the system, excess pressure will result in energy losses. The system's compressor will consume more power in order to compress the ammonia to the higher pressure. This will also generate more waste heat from the process of condensing the superheated ammonia to a saturated liquid state.