Doctor in a white coat holding a tablet
Healthcare

Oslo University Hospital

Oslo University Hospital is one of Europe's largest hospital campuses. Assemblin Caverion Group installed three Tequs Aqua4 CO₂ heat pumps to supply continuous, high-reliability space heating across the site, using exhaust ventilation air as the heat source.

Oslo, Norway
Location
3 × 140 kW (Aqua4)
Installed Capacity
3.2
Field COP
~105 t/yr
CO₂ Avoided
Ulf Minge, Assemblin
Tequs was the only solution compact enough to fit within the existing energy central, without sacrificing any of the output we needed.

Technical solution

ParameterDetail
Heat pump model
3 × Aqua4
Refrigerant
CO₂ (R744)
Heat source
Exhaust ventilation air
Application
Space heating for a hospital campus

Results and impact

  • 3.2: Combined COP across the three-unit installation
  • 420 kW: Total installed capacity (3 × Aqua4)
  • ~105 t/yr: Avoided CO₂ emissions, the largest reduction in the Tequs fleet

References.

Indoor swimming pool with water slides reflected in the waterPublic buildings

AdO Arena

Pool heating saving up to 750,000 kWh a year, running at full capacity through Bergen's coldest winter in 20 years.

Green plants under the glass roof of a greenhouseIndustry

Statkraft, Meråker

Three units in a greenhouse, COP 4.8, around 750 tonnes of CO₂ avoided per year.

Hotel room with curtains and a window facing the fjordHospitality

Holmen Fjordhotell

One unit supplying space heating and hot water for 170 rooms, saving around 191,000 kWh a year.

Fjord with a land-based aquaculture facility by the shoreAquaculture

Nekton Aquaculture

One unit delivering 85°C heat from seawater, COP 3.25, around 35 tonnes of CO₂ avoided per year.