PECM Issue 28 2017 | Page 19

environment in which it’s installed. It must be specific to a particular application. The main considerations centre around whether the enclosure is located in a cold or hot environment, if that environment is clean or dirty, and to what degree. Conditions may also change over the course of the working day, week, month or year, so the final selection of an appropriate cooling solution may not be entirely straightforward. Jason continues: “Enclosures that are placed in a cool and clean environment may find fan-and-filter units are more than adequate, given a single device provides more than 4 kW of cooling in ideal conditions. However If the air is dirty, it is still possible to take full advantage of low ambient temperatures by using energy efficient air-to-air heat exchangers to provide any necessary cooling.” For applications that require the temperature inside the enclosure to be lower than that outside it, a refrigerant based solution may be the best option. The new Blue e+ cooling unit range from Rittal, with capacities up to 6kW, can operate in ambient temperatures up to 60°C yet also provide free cooling when the external air is cooler due to the innovative use of hybrid technology. Air-to-water heat exchangers may be used in even hotter conditions and the water delivered to a remote location in which the heat, up to 10kW from one unit, may be dissipated more effectively and with less effect on the temperature of the surroundings. Further information at www.rittal.co.uk and www.friedhelm-loh-group.com or on twitter @rittal_ltd. We’re offering users of Rittal enclosure cooling equipment the opportunity to receive a FREE inspection survey* Visit www.rittal.co.uk to claim yours IT INFRASTRUCTURE SOFTWARE & SERVICES *Limited-time offer. Terms and conditions apply. For full details please visit www.rittal.co.uk