Rittal Launches New Blue e Chillers in 11 to 25 kW output class

Rittal has significantly improved its range of cooling technology for machines and enclosures with its new Blue e chillers in 11 to 25 kW output class.

Using 40 per cent less refrigerant, the devices will make an important contribution to sustainable environmental protection. Meanwhile users benefit from the chillers’ precise temperature control, simplified operation and installation, as well as new safety functions.


Pre-configured option packages, which are quickly available from stock, can meet almost any need, from precision control systems with higher pressure requirements to robust outdoor applications in cold climates.
The re-cooling of liquids by chillers is one of the basic requirements for smooth operation in many industrial processes. For example, enclosures and machine tools must have strict temperature control for the precise machining of metal.


Sustainable and Environmentally Friendly


The latest generation of chillers need to be easy to operate and install, as well as offer maximum user safety. Customers also need fast order turnaround such that customised solutions must be available off-the-shelf, and there is a increased focus on sustainability and environmental performance.


With the development of its new Blue e chiller range and combined with the existing Blue e+ chillers (1.5 to 6kW), Rittal can offer a mature solution package that meets all these needs.


The adoption of a 100 per cent aluminium heat exchanger with micro-channel technology results in stand-out benefits for the user: it improves exchanger efficiency and it reduces the amount of refrigerant needed by 40 per cent compared to other chillers. In addition, the use of aluminium means that the possibility of galvanic corrosion is completely eradicated.

Regulated Performance


The fan and compressor are regulated via a digital controller which means the temperature of the cooling medium can be precisely regulated. As standard, the hysteresis is ± 2 K; however, a precision control (hot gas bypass) of ± 0.25 K is also possible as an option. This prevents temperature fluctuations that cause inaccuracies on the machined workpiece, and also ensures consistent quality.

Ease of Use


The multi-lingual and industrial-grade touch display, plus the intelligent communication interfaces, make both operation and analysis easy.
The parameterisation of the devices, as well as the read-out of the data and messages are performed quickly and shown in plain text. Error messages are prioritised and displayed in three escalation levels.

Rapid Commissioning


Blue e chillers are wired ready for connection and can be up and running quickly, via plug-and-play. Lifting eyebolts make transport easy, as does the base/plinth, which is suitable for transport by forklift truck. Uniform water connections, an adjustable overflow valve (bypass valve) and ideal accessibility to all the components make it easier for fitters and service staff to work on the units.

Designed with Safety in Mind


Integrated overflow valves ensure a constant circulation of cooling water when the consumer is closed, and the pump is running. This protects the coolant pump from overload.
The valve is pre-set for the pump being used 50Hz operation but it can be set for 60Hz. A filling level monitoring system ensures maximum reliability and improved availability. Besides this, optional flow monitors emit an alarm if the flow rate is too low and can detect hydraulic errors such as blockages in the system at an early stage.

Option Packages


Rittal also offers pre-configured option packages that are available quickly from stock and which offer a suitable solution for almost any demand.
For example, performance-enhanced pumps (4 and 6 bar) are available for increased performance. If necessary, a precision control system (hot gas bypass) can be used to improve control accuracy. In addition, the Blue e chillers can be prepared for cold zones of down to minus 20°C, as well as for laser applications, and they can also be fitted with a water-cooled condenser or with pre-heating and customised with special paint.

Further information at www.rittal.co.uk and www.friedhelm-loh-group.com or on Facebook @RittalLimited and Twitter @rittal_ltd.

Rittal Therm 6.3 – updated thermal

To simplify the often time-consuming and complicated calculation of enclosure cooling and heating require-ments use Rittal’s Therm 6.3 software.

Input the dimensions and position of your panel, together with the heat loss of the equipment installed, the ambient temperature, your preferred internal temperature and details of the available power supply, you can then select a cooling or heating solution specific to your project requirements.

A user-friendly interface guides you step-by-step through the selection process and at the end of the calculation, you receive a detailed report that not only shows the selected product, but also the net heat transfer through the walls of the enclosure. In the case of cooling solutions, the internal temperature that would be reached without climate control.

All evaluations are based on the requirements of IEC/TR3 60890 890 AMD 1 and DIN 3168 for enclosure cooling units and so this useful tool also gives considerable peace of mind that suitable components have been chosen.

Enclosures can be selected from Rittal ranges or alternatively, the dimensions of bespoke cabinets can be entered manually. The heat dissipated by installed equipment can be input directly, calculated using actual measured enclosure internal and ambient temperatures or selected from a database of standard components.

Use an online version or download the offline version of Therm 6.3 from the Rittal website.

Rittal RiThermUD

Rittal Enclosures, Power Distribution, Climate Control, IT Infrastructure, 19 inch Racks, Software & Service – http://www.rittal.co.uk