Rittal ‘Blue e’ generation cooling units

Energy-saving cooling units of the ‘Blue e’ generation have a cooling output ranging from 500 to 4000 W (depending on the application) that can help achieve energy savings of up to 70%.

The Comfort Controller control system units are similar to the company’s TopTherm system. The higher coefficient of performance is 42% higher (from 1.2 to 1.7) with 1000 W test equipment.

The first step towards improving the efficiency of the new cooling units with nano coating involves the entire geometry of the cooling components’ configuration. The component manufacturer systematically analysed existing devices and - wherever possible - improved the design of the condensers, evaporators, cooling fins, pipe bends and all the other refrigeration components.

Rittal optimised the fan. EC (electronic commutation) is used in most of the fan motors, replacing the traditional pole reversal.

Electronic commutation motors have a dynamically balanced rotor with multipolar magnets and the rotor position is recorded by several Hall effect sensors.

Motor supply and control is via an external electronic operating system.

The control electronics have also been improved using Eco-Mode controls. If an internal fan does not need to operate permanently, it is automatically switched off, so cutting energy costs.