AxiTop–LessnoiseandmoreefficiencyENG.PDF

The new diffuser AxiTop reduces energy consumption and is easily retrofitted AxiTop – Less noise and more efficiency New diffuser reduces exit losses in fans For refrigeration and cooling equipment, the heat generated in the circulation process has to be transferred to the ambient air via a heat exchanger. To accomplish this, fans move cool air through a heat exchanger and allow the heat to dissipate. There is a whole range of options for designing and configuring especially efficient, quiet and durable fans. A new, passive component, the so-called diffuser, provides for a substantial improvement in efficiency and noise. Its pressure-boosting effect minimises exit losses and makes it easier to adapt the fan to commercially available heat exchangers. Ventilation and air-conditioning units usually run in continuous operation, or at least with long operating cycles. That make maximum economy with the input drive energy important, for every additional watt costs money and impacts the environment. For that reason, energy efficiency is an important criterion when choosing a fan. Today, statutory stipulations also play a role. The efficient use of energy and resources is and will remain a global objective for the decades ahead. In Europe, the first tier of the ErP Directive became effective as of January 1, 2013. Against this background, it is no wonder that ultra- efficient EC technology is increasingly replacing conventional AC technology as the fan drive of choice due to its greater efficiency. Exit losses – the underestimated “energy guzzlers” Figure 1: Power flow of an axial fan with unimpeded airflow