Compressor sequencing is a strategy used to reduce energy consumption and carbon emissions in industrial cooling systems. It involves the controlled operation of multiple compressors in a cooling system to meet the required cooling load efficiently.
Compressor sequencing can be achieved by using sophisticated controls that determine the optimum number of compressors to operate at any given time. These controls can take into account variables such as load demand, outdoor temperature, and refrigerant pressure. By optimising compressor sequencing, energy consumption can be reduced, and the lifespan of the compressors can be extended, reducing the need for maintenance and replacement.
Benefits of compressor sequencing include:
Energy Savings: Compressor sequencing can lead to energy savings of up to 20-50% compared to non-sequenced systems, which translates to lower electricity bills and reduced carbon emissions.
Increased Efficiency: By using only the required number of compressors, compressor sequencing ensures that the cooling load is met efficiently, reducing wastage and improving the overall efficiency of the cooling system. Sequencing compressors based on compressor sizes is very important, especially with fixed speed machines.
Reduced Wear and Tear: Compressor sequencing reduces the frequency of compressor start-ups, which can result in reduced wear and tear on the compressors and increased longevity.
Improved System Reliability: With compressor sequencing, the load is distributed across multiple compressors, reducing the likelihood of system failure due to compressor overload.
Reduced Maintenance Costs: By reducing the number of compressor start-ups and ensuring that the compressors operate efficiently, compressor sequencing can reduce maintenance costs associated with compressor failure. When a compressor starts the electrical inrush is multiplied by a factor of 6.