Compair L11VS to L18VS range variable speed compressors

CompAir has extended its portfolio of variable speed compressors with the launch of seven new models, to offer a comprehensive range of energy-efficient rotary screw machines from 11 to 250 kW.

Energy efficiency has been considered at every stage of the design of the L11VS to L18VS range to ensure that the machines can meet the wide variation in air demand necessary in modern processes. Each compressor features a variable speed drive that helps to minimise energy use, as the unit produces the right volume of air required by the factory network at all times.

A compressor with a greater range of volume output is generally more cost efficient to operate as the machine will automatically adjust or ‘turndown’ its flow rate to the most economic level. Therefore, each machine in the range is engineered to offer good performance, with a volume flow turndown that is considered to be up to 17% greater than other comparable compressors.

With a compressor that has a limited flow range, the machine will typically go in to off load mode when it reaches its minimum flow. This is both inefficient and costly as the compressor continues to run, thereby consuming energy, with no output. In addition, the motor will be forced to stop and restart, putting additional wear on components and increasing overall cost of ownership through increased maintenance and energy consumption.

In contrast, CompAir’s L11 VS machine, for example, can continue running at as little as 10% flow at 7 bar pressure, for maximum flexibility of operation and greater control over air usage.

With the dewpoint controlled by AirSmart, this removes the need for a separate dryer control system, helping to save installation cost. Other options include an electronic condensate drain, an air receiver sized to match the compressor dimensions and a communications module. This can control up to eight variable-speed compressors simultaneously and set the operating point at the most energy-efficient load.