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THE ZerAX EC+ EFFICIENCY EQUATION

THE EC+ CONCEPT

The concept builds on the idea of optimization of the components that have the greatest effect on the overall system efficiency. In this context, the most efficient technologies are prescribed in the form of PM motors, Danfoss VFDs and ZerAx® fans.

With motor and frequency drive efficiencies both reaching above 95%, the ZerAx® efficiency of 92% brings the overall system efficiency to 85%.

ADVANTAGES OF UPGRADING TO EC+

  • With its overall efficiency of 85%, the EC+ solutions are the most efficient, profitable and up-to-date available on the market.
  • The high EC+ system efficiency promotes large economic savings and ROI's between 12-30 months.
  • The complete plug-and-play solutions guarantee easy and fast retrofit of existing installations.
  • The lifetimes of 20+ years and zero down-times assure very low maintenance costs. Furthermore, the Environmental impact is diminished and CO2 emissions are significantly reduced.
  • All this leaves no doubt that EC+ solutions can maximize the energy efficiency of ventilation systems for the benefit of operators and the environment.

Energy savings of 20-50%

DYNAMIC PRESSURE IS THE KEYWORD

To maximize the energy efficiency of any ventilation system, fans must use both the static and dynamic pressures. The result is higher efficiencies, lower energy consumption, reduced operating costs and lower carbon emissions

HVAC systems which only utilize the static pressure cannot achieve efficiencies above 90%, as the dynamic pressure goes to waste. To achieve the most energy-efficient ventilation system, fans that use both the static and dynamic pressures are required.

The efficiency of plug and centrifugal fans is calculated solely on the basis of the static pressure. This is because the systems are unable to utilize the dynamic pressure, which they literally throw away. Due to the design axial fans utilize both the static and dynamic pressures, which in turn means that the efficiencies are based on the total pressure, which makes them capable of achieving efficiencies above 90%. Although plug and centrifugal fans are tempting because they appear simpler and more flexible than axial fans, they are an expensive choice in the long run – both in terms of operating costs and environmental impact. A high efficiency axial fan consumes less energy and reduces both costs and carbon emissions, hence the efficiency is a key critical parameter in fan solutions.

PREMIUM FAN DESIGN FOR BEST PERFORMANCE

PURE COMPETENCE IN AIR

Since 1947 our design, development and operation of ventilation products and systems have given us vast experience. The efforts we put into research and development reflect our dedication and allow us to create products on the technological forefront with respect to performance and durability. This is what we consider necessary to stay in front in a world that changes constantly with new environment requirements and calls for innovative solutions from customers and the business environment. The challenges fuel our desire to create the next generation of ventilation products.

Before Retrofit

After Retrofit

LESS MASS AND STILL DURABLE

The rotation of the rotor requires energy and one way to reduce this is through use of light materials and optimal design. For these purposes, aluminum is a perfect choice, as it is both strong and light. Most rotating fan parts, as well as the guide vanes and motor mount, are of aluminum. The inner hub forms the only exception in the larger fan sizes, where cast steel is used in order to cope with the higher loads.

The fan casing and inner tube are also of vital importance to the fan performance. The design must be strong and durable enough to withstand the loads and to minimize vibrations. Here the use of Aluzinc gives the construction the sought after characteristics