Roof-mounted cooling units are the top choice in control and switchgear engineering when heat has to be routed above the enclosures and then outside. This is the case, for example, when enclosures are bayed and there is enough space for the cooling units to be wall-mounted. Since ambient air is drawn in at the front of the cooling unit and then expelled again, there is no need to adhere to minimum distances to neighbouring appliances or to walls. The air routing within the enclosure is also optimal: The cold air is blown out in the front part of the enclosure and so ideally dissipates the heat from top-mounted components such as frequency inverters.
The new roof-mounted cooling units of the Blue e+ series, like the existing wall-mounted units, work with a combination of heat pipe and conventional compressor technology. Since neither a compressor nor a pump is called for when cooling via heat pipe, the energy consumption is very low. Only the fans, used to transport the air past the heat exchangers, need to be supplied with electricity. This cooling method works especially well if there is a large temperature difference between the inside of the enclosure and the surroundings.
Average energy savings of 75 percent
The additional compressor in the cooling units only operates when a larger cooling output is required. The compressor cooling is also very energy-efficient: All the active components operate with speed-controlled drives. The cooling output is thus always exactly as high as required and less energy is consumed. Overall, depending on the ambient conditions and the application, cooling units of the Blue e+ series use 75 percent less energy on average than conventional compressor cooling units do. The lower temperature deviations within the enclosure mean that the service life of the components installed is extended.
The new devices also have a multi-voltage supply and are thus easy to operate at all common mains voltages and frequencies. This is a huge benefit, especially for those engineers who sell their machines worldwide.
Intuitive and comfortable operation
Operation is comfortable and intuitive thanks to a modern touch display on the front, which is used to make the basic settings and to display the status messages. The touch display can also be integrated into the door of the enclosure as an option. Another option available is the IoT interface, which makes it simple to integrate the cooling unit in an Industry 4.0 (IoT) environment.
The Blue e+ cooling unit is also employed in the new Rittal integration solution. In this plug & play solution, the cooling unit is installed directly in the upper section of the VX25 enclosure. Instead of retrofitting a standard enclosure with a climate control solution, this integrated unit provides the user with a complete system consisting of an enclosure including climate control. Operation is easy via the touch display built into the enclosure door. The cooling unit can be easily withdrawn for maintenance purposes when the door is open.
Rittal, headquartered in Herborn, Hessen, Germany, is a leading global provider of solutions for industrial enclosures, power distribution, climate control and IT infrastructure, as well as software and services. Systems made by Rittal are deployed across a variety of industrial and IT applications, including vertical sectors such as the transport industry, power generation, mechanical and plant engineering, IT and telecommunications. Rittal is active worldwide with 9,300 employees and 58 subsidiaries.
Its broad product range includes infrastructure solutions for modular and energy-efficient data centres with innovative concepts for the security of physical data and systems. Leading software providers Eplan and Cideon complement the value chain, providing interdisciplinary engineering solutions, while Rittal Automation Systems offers automation systems for switchgear construction.
Founded in Herborn in 1961 and still run by its owner, Rittal is the largest company in the Friedhelm Loh Group. The Friedhelm Loh Group operates worldwide with 18 production sites and 80 international subsidiaries. The entire group employs 11,500 people and generated revenues of €2.5 billion in 2017. For the tenth time in succession, the family business has won the accolade "Top German Employer" in 2018. In addition Friedhelm Loh Group was recog-nized as "Top vocational trainer" according to a study of Deutsch-land Test and Focus Money for the third year running in 2018.
Further information can be found at www.rittal.com and www.friedhelm-loh-group.com.
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