Aermec compressor controller claims up to 50% energy savings


31 October 2023

Aermec has launched a smart compressor controller which it says can improve chiller efficiency and deliver up to 50% in energy savings.

The manufacturer says the Aersave technology converts any 3-phase fixed speed compressor to a variable speed compressor. Aersave can be used on any manufacturer’s chillers, operates with any refrigerant and is compatible with all brands of BMS systems.

“Energy usage is one of our customers’ largest costs and concerns,’’ said Paul Lawrence of Aermec. “Aersave can help businesses significantly improve the energy efficiency of their chillers by as much as 50%, whilst increasing their lifespan and boosting their ROI.”

By enabling compressors to work smarter, Aersave eases reliance on the electrical grid, increases reliability, offers compressor protection, and can easily be retrofitted by any air conditioning or refrigerant engineer. 

Aersave comprises two sensors instead of pressure transducers. One connects onto the suction line of the compressor, the other to the discharge line. Its unique compressor control gathers the temperature from the two sensors’ points, together with gathering data via Modbus from the device via the compressor, which are then input to an algorithm, which calculates what speed and compressor capacity is required for the complete system to achieve its demand capacity.

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While working on lower frequency for prolonged periods of time an oil return sequence brings the oil back to the compressor to protect it

Aersave also has multiple dip switch settings that can be switched dependent on the compressor type whether it is a reciprocating or scroll. It also controls the fan motor whether it is a condenser or evaporator fan motor. 

As the technology can work with any type of refrigerant, there is no need to cut into the refrigerant line. 

Aermec adds that the technology was successfully trialled by one of the largest fresh food manufacturers in Ireland, where the chiller delivered a reduction in electrical consumption of 41%.