GEA compact and efficient BluAstrum chiller at ISH

By Janet Thompson, Mar 26, 2013, 17:05 2 minute reading

GEA Refrigeration Technologies presented chillers from its GEA Grasso BluAstrum range at the 2013 ISH. The chillers especially distinguished themselves through their high efficiency under partial load, their industrial quality, and, most notably, a compactness that is quite rare for refrigeration systems employing ammonia.

Presented by GEA Refrigeration Technologies at the ISH 2013, which took place from March 12-16 in Frankfurt am Main, Germany, the BluAstrum chiller stood out from conventional chillers through its ability to reach optimal efficiency under partial load and its exceptional compactness. The chiller’s use of the natural refrigerant ammonia and its additional optimisation for use with CO2 further distinguished it.

Grasso BluAstrum compact dimensions

With its slim dimensions and quiet operation, the BluAstrum is very appropriate for installations in relatively small machinery rooms, despite its use of ammonia. It has only about half of the installation footprint of conventional ammonia chillers with the same output. The chiller is available in six different model sizes, with a maximum refrigeration capacity of approximately 550 to 1730 kW. Regarding the condensers, engineering planners will, in the future, have the option to choose among combinations of air, liquid, or evaporative condensers.

Max efficiency under partial load

One of the main marks of these chillers is their high efficiency under partial load. With ESEER values over 8 – and according to Eurovent, supply/return flow temperatures of 7/12°C – they are ideally suited for use under the various load conditions typically encountered in applications such as air conditioning. Conventional chillers reach their maximum efficiency at full load, often required on the few hot summer days. The BluAstrum, however, obtains maximum efficiency during the far more common conditions of partial load, allowing it to run near its optimal operational point the majority of the time. This results in a reduction of the annual average power consumption and, therefore, lowers operational costs.

Other basic specifications of the chiller

  • Variable speed drive
  • Maximum efficiency under all load conditions
  • Compact design with minimal floor space required
  • All condensing unit designs possible (liquid-cooled, air, evaporation)

Read detailed technical specifications on the product sheet

Long-life features

In addition to flexibility, GEA development engineers also factored in long-life mechanical and technical features, for example roller-bearing mounts for radial and axial bearings with hydraulic load-relief, an improved asymmetrical rotor profile and service-friendly basic structural design. By selecting long-life components, designers assured the lowest possible service costs. For example, the first oil change is recommended only after five years. A great emphasis was also placed on the units’ compactness without restricting the accessibility of important components.

About GEA Group

One of the largest suppliers for process industries, including the food processing industry, this international technology group focuses on process technology and components for sophisticated production processes. As a market and technology leader, GEA Group generated more than EUR 5.7 billion and employed around 24,500 people worldwide in 2012.


By Janet Thompson

Mar 26, 2013, 17:05

Related stories

Sign up to our Newsletter

Fill in the details below