Aalborg CSP was selected as turnkey supplier of a 1 MW heat pump system for Brønderslev Forsyning. The heat pump will recover heat from the district heating plant’s existing biomass boilers as well as the outdoor air, thereby supporting Brønderslev Forsyning in further optimizing the efficiency of their energy production.


Client:       Brønderslev Forsyning
Location:    Brønderslev
Status:    Under construction
Technology:    Heat pump system
Capacity:    1 MW
Contract type:    EPC

Efficient and cost-effective heat production

The order for Brønderslev Forsyning is a turnkey contract consisting of a 1 MW air-to-water heat pump with associated pipes and exchangers, as well as integration with the district heating plant's existing energy system, which includes a 26,929 m2 solar heating system and two biomass boilers.
The new heat pump system is tailored to fit the existing district heating plant, focusing on efficient and cost-effective heat production by utilizing excess energy.

Synergies improves efficiency

The heat pump is designed to recover energy from the waste heat generated by the district heating plant's existing biomass boilers and from the outdoor air. When the biomass boilers are running, a great deal of waste heat is generated in the boiler room. This waste heat is extracted by an air cooler. Subsequently, the energy from the waste heat is converted by the electric heat pump, compressing the energy into usable district energy at the desired flow temperature. When the temperature in the boiler room is suitable, the energy for the heat pump is extracted from the outdoor air using energy absorbers.


  • Design and delivery of heat pump system with heat absorber
  • Design and delivery of pipping (valves, drain, headers etc.)
  • Mechanical installation
  • P&I diagrams and control system
  • Drawing materials
  • Documentation
  • Supervision of installation and commissioning
  • Legalization of the plant


Andreas Zourellis
VP Sales - International
District heating / industrial solar technologies
Phone: +45 50 30 00 25 
E-mail: azo@aalborgcsp.com