Combined cooling and heating with NH₃

GEA Blu-Red Fusion

GEA has launched an innovation that combines cooling and heating in a single product. The new GEA Blu-Red Fusion is a combination of the successful GEA Blu chillers (low stage) and GEA Red heat pumps (high stage).

It is particularly suited for combined cooling / refrigeration and heating demands at low heat source temperature levels and high temperature lifts between heat source and heat sink. GEA Blu-Red Fusion models are based on the existing Blu chiller (BluAstrum or BluGenium) and Red heat pump (RedAstrum or RedGenium) family which are configured and combined either per manual selection or automatically on the capacity and heat source and heat sink temperature requirements. Heat source outlet temperatures are supplied between +15 and -15 °C while the maximum supply temperatures at the hot side reach up to +80 °C. Cooling capacities range from approx. 300 to 1,800 kW with heating capacities covering a scope of approx. 450 to over 2,400 kW (sec. refrigerant at +12 / +6 °C, heat carrier at +50 / +70 °C).

Efficiency-optimized configuration minimizes total costs and CO₂ emissions

The intermediate stage is equipped with one single, efficient ammonia-ammonia ’cascade’ heat exchanger. Not only does the design drastically reduce the capital investment, it also makes an intermediate liquid cycle redundant which reduces the differential pressure of both stages and does not waste power on glycol or water pumps. The efficiency benefit easily reaches double digit numbers. This means a dramatic reduction of energy costs and CO2 emissions.

Highlights and technical features

  • Broad range of models for combined cooling and heating applications
  • Optimum performance with the natural refrigerant ammonia (R717)
  • Cooling capacity 300 – 1,800 kW*
  • Heating capacity 450 – 2400 kW*
  • Hot water or glycol supply temperatures up to 80°C
  • Heat source temperature range -15 to +15 °C
  • Efficiency-optimized configuration with minimized energy costs and CO2 emissions
  • GEA Blu chiller and Red heat pump know-how and experience
  • Based on well-proven equipment

*secondary refrigerant 12/6 °C, heat carrier +50/+70 °C, R717

Learn more with GEA  RTSelect – our product selection and configuration tool.

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