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

Exposure to high temperatures

Now may be the time to investigate available solutions to the problem of overheating panels. Rittal have a large range of cooling products that will address the problem.
Rittal’s TopTherm fan-and-filter units are an energy efficient means of cooling enclosures but require a clean and cool environment to operate effectively. Air-to-air heat exchangers have separate internal and external air paths, preventing dirt and dust from entering the panel, but still require a cool ambient air to deliver the required cooling.
Cooling units also have separate air circuits but are capable of cooling the air inside an enclosure to a temperature lower than that of the ambient as well as maintaining a clean internal environment. In the case of thermoelectric coolers, the Peltier effect is used to deliver modest amounts of cooling, typically to small panels, offering a lightweight and compact solution. Units from the Rittal TopTherm Blue e range incorporate a refriger-ant circuit and so have larger nominal cooling capacities, up to 4 kW.
Air-to-water heat exchangers can maintain the air inside a panel at a temperature lower than that of the surrounding air and have an additional benefit of allowing heat to be dissipated remotely. Water is the cooling medium used to transport thermal energy to an alternative location, where it may be discharged without increasing the temperature in an already warm environment. To complete the chilled water system a Rittal chiller can be used to return the water to its’ original condition before recirculating to the heat exchanger.

Read more at – http://www.rittal.com/uk-en/content/en/unternehmen/presse/pressemeldungen/pressemeldung_detail_32512.jsp

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

Efficiency – It’s not just about operating energy consumption

Rittal’s new TopTherm fan-and-filter unit makes installation and servicing simpler and quicker as mounting on the enclosure, electrical connection, reversal of the direction of airflow and replacement of the filter mat are all possible without the use of any tools.

The changeover to Rittal’s TopTherm fan-and-filter unit has been made as simple as possible by maintaining the air throughputs and cut-out dimensions of the previous product range. Original equipment manufacturers, panel builders and end users alike may upgrade to the new fan-and-filter without any change to the metalwork in which it is to be installed. The same may be said of Rittal’s TopTherm Blue e cooling unit, as the cooling outputs, mounting cut-outs and dimensions of the series that it replaces, have been maintained.

Improved performance against increased static pressure difference results in an extended filter service life that not only reduces running costs but also saves time due to longer maintenance intervals.

RiDiag II is a useful software tool for the TopTherm Blue e cooling unit, allowing the parameters of cooling units to be changed quickly and easily, as well as stored remotely.

The RiNano coated condenser in Rittal’s cooling units extends servicing intervals by minimising the adhesion of water, dirt and oil, ensuring a more consistent cooling output for a longer period of time.

For further information contact Rittal UK on 01709 704000 or e-mail cooling@rittal.co.uk.

www.rittal.co.uk