PRODUCTION • PROCESSING • HANDLING
High-efficiency cooling with the WhizzWheel fan
achieve the required capacity is 3m/s, which is almost no wind at all. Wind plays a major role in an A-frame as the pressure drop over the bundle – and therefore the air speeds – are relatively low. Many coolers (whether A-frames or not) are situated in areas where, during the summer months, capacity problems are caused by the high temperatures of the ambient air. Or they must comply with the stricter European regulations for noise and energy consumption that will come into effect in Germany, for example, in 2017. A number of Bronswerk’s customers are encountering these problems or combinations of these problems. A refinery in Germany even had to close its plant because it was unable to comply with the permitted noise levels with the equipment it was using at that time! In these cases, the situation involves an existing plant, with existing coolers and usually limited plot space, and sometimes also limited capacity and cable diameters, all of which need to be taken into account to implement the desired or required improvements. Despite the considerable challenges, solutions do exist for situations of this kind. Using high efficiency cooling with the Whizz-Wheel fan, an existing plant can be retrofitted. Te existing fan and part of the housing are replaced with the highly efficient Whizz-Wheel fans and specially designed inlet and control systems. With a retrofit, Bronswerk leaves the existing plant as it is, but the adjustment still brings about the desired or required changes. In terms of results achieved via such projects, at
the abovementioned refinery, where the plant had to close temporarily due to noise restrictions, the company not only returned production to 100% but also realised unprecedented energy savings of 53%. In addition to this, in Bronswerk’s experience thus far, bundles under which a Whizz-Wheel is suspended are less sensitive to pollution and also cost less to maintain.
IN SUMMARY If you have capacity problems with your cooling equipment, the logical first step is to check the condition of the bundles. If there is dirt on the bundles (and this is often the cause, even if the dirt is not visible on the outside of the bundle), you can now safely and efficiently clean the bundles using Bronswerk’s dry cleaning method. Tis will be a vast improvement in itself, but if you aim to keep increasing the cooling capacity and want even less dirt in the future, the company also offers various retrofit options. Even more importantly, given the forthcoming regulations: if you are facing possible noise constraints and restrictions in your energy consumption, Bronswerk recommends checking your cooling equipment as an urgent priority. l
For more information ✔ at
www.engineerlive.com/iog
Femke Schaefer is with Bronswerk.
www.bronswerk.com
www.engineerlive.com 45
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