Ziehl-Abegg showcased its revolutionary bionic bio-fan during Chillventa. The new fan consists of castor oil-based bio-polyamides.
Ziehl-Abegg managing director, Peter Fenkl, said the company can save the environment thousands of tonnes of C02 every year with these fans.
In addition to CO2 saving, there are improvements in the load capacity, temperature resistance and long-term stability as well as the mechanical properties. Since the blade geometry incorporates knowledge from bionics, the fan is also quieter and more efficient – reducing electricity costs and noise emissions in operation.
The new design in refrigeration engineering (refrigeration chain for food to the supermarket), in heaters, heating pumps and for electrical cooling (computer centres, control cabinet cooling, inverter cooling).
In keeping with its sustainable concept, the fan is 100 per cent recyclable. Although the CO2-footprint is considerably minimised, it has benefits for appliance planners: The fan has greater chemical resistance and better low-temperature impact strength and withstands hot water and steam.
Fenkl said the bio-fan is six per cent lighter because of a reduction in density and lower moisture absorption.
Also on show at the Ziehl-Abegg stand was the new MAXvent owlet medium pressure fan which has taken noise minimisation to the next level making it ideal for large condensers and coolers in residential and industrial areas.
"Of course the fan looks a little unusual due to the uneven distribution of the blades," Fenkl said. “Two adjacent blades work like one big one - this idea is not new. But in combination with a bionic wing design of every blade, the reduction in the noise development is extraordinary.
"It is the quietest fan with a diameter of 1.4 metres that is suitable for high volumetric flows.”
With its GEA Grasso BluGenium series, GEA Refrigeration Technologies has introduced new water-cooled ammonia chillers which were on show at Chillventa.
The chillers are based on piston compressors from the GEA Grasso V series and are characterized by a narrow width of only 1.2 m and a small footprint. GEA Grasso BluGenium chillers enable brine inlet temperatures of approx. -15 °C to +15 °C.
This makes them effective for industrial applications, process cooling, building climate control, and many additional areas of use.
The chillers are available in five model sizes, with maximum cooling duty ranging from 280 kW for the smallest model, to the largest unit with a maximum duty of 1210 kW (all ratings measured at +12/+6 °C).
These chillers are impressive not only at full load, but also with their great efficiency in the often-required part-load range. This results in an unequalled European Seasonal Energy Efficiency Ratio of 9.5.
One of the features contributing to this performance is the standard frequency inverter, which enables speed control from 500 to 1500 rpm and, in turn, infinitely variable output matching over an extensive load range. An additional efficiency characteristic is the so-called electronic condenser drain system.
It monitors pressure relationships at the condenser and evaporator and assures optimal capacity utilization of the evaporator. The water-cooled GEA Grasso BluGenium chillers are available immediately.
For 2015 it is planned to expand the range by adding models with external condensers.