Combined cooling and heating with NH₃

GEA BLU-RED® FUSION

GEA has launched an innovation that combines highly efficient 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). With the inclusion of new compressor models, the available capacity and temperature range is now higher than ever before, to serve new applications and meet ever more demanding customer needs.

At best-in-class efficiency, the GEA Blu-Red® Fusion is particularly suited for combined cooling and heating applications with high temperature lifts between heat source and heat sink, where single stage compression would otherwise be inefficient or impossible. Whether in the food, dairy or beverage industry, the GEA Blu-Red® Fusion is ideal for cooling and heating applications such as hot water washdown for abattoirs or pasteurization processes. The Fusion is also the first choice for heating only applications, such as district and facility heating, using low-temperature heat sources including water from the environment or sewage and wastewater.

GEA Blu-Red^® Fusion models are based on the existing Blu chiller (BluAstrum or BluGenium) and Red heat pump (RedAstrum or RedGenium) family and offer the same features and benefits. The Blu-Red^® Fusion can be easily configured as one product in the product selection and configuration tool GEA RT Select which perfectly matches Blu chiller and Red heat pump modules with respect to the project specific requirements.

Efficiency-optimized configuration minimizes total costs and CO₂ emissions

The intermediate stage is equipped with a single, high-efficient ammonia – ammonia ’cascade’ heat exchanger. This connection of the low and high stage, with two separated refrigeration circuits, allows the free combination of different models and minimizes the total refrigerant charge. The absence of an intermediate liquid circuit reduces the equipment effort and capital investment, 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.

Full flexibility with three different operating modes

The GEA Blu-Red^® Fusion offers the highest flexibility for individual operating requirements and seasonal demands. As well as simultaneous cooling and heating in full- or part-load (‘mode 1’), it is possible to switch off the heat pump stage and operate the chiller stage only, when there is no heating demand (‘mode 2’). Finally, the heating capacity can be regulated (reduced) irrespective of the cooling capacity demand (‘mode 3’). It’s also possible to save costs by configuring the Fusion for constantly lower heating demands to prevent unnecessary oversizing of the heat pump module.

Highlights & Technical Features

Broad range of models for combined cooling and heating applications
Full flexibility with different operating modes
Highest efficiency and lowest energy consumption
Future-proof with the natural refrigerant ammonia (R717) – in accordance with the F gas regulation, the initiative for the prohibition of F-gases
Cooling capacity range approx. 205 to 1810 kW / 58 to 514 TR *)
Heating capacity range approx. 275 to 2400 kW / 938 to 8189 MBH *)
Heat carrier supply temperatures up to 95°C / 203°F
Secondary refrigerant outlet temperature range between -15°C / 5°F to 15°C / 59°F
Fully welded shell & plate heat exchanger
Various plate materials available, all common liquids supported
Efficiency-optimized configuration with minimized energy costs and CO₂ emissions
Stepless capacity control via frequency inverter, additionally screw compressors with capacity slide and reciprocating compressors with cylinder switch-off
Industry-leading controller technology with GEA Omni
Based on well-proven equipment, GEA Blu chiller and Red heat pump know-how and experience

*) Sec. refrigerant 12°C / 53.6°F and 6°C / 42.8°F, heat carrier 40°C / 104°F and 70°C / 158°F

Technical Data

1) Blu Chiller – Red Heat Pump type connotation: BG = BluGenium, BA = BluAstrum, RG = RedGenium, RA = RedAstrum, BG/BA/RG numbers refer to model size, RA letters refer to compressor housing and swept volume size.
2) BG/RG reciprocating compressor speed max. 1500 rpm, BA screw compressor speed max. 4500 rpm, RA screw compressor speed max. 3600 rpm (RM, RN, RR types limited to 3300 rpm).
3) COP combined = cooling plus heating capacity / power consumption at net.