Heat pumps

Heat pump system exceeds performance targets in final commissioning phase

2. May 2023
Heat pump system exceeds performance targets in final commissioning phase

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A 1.2 MW CO₂ heat pump system has been handed over to Solrød Fjernvarme after successful testing — demonstrating reliable performance under real operating conditions.

OUR IMPACT

A 1.2 MW air-to-water heat pump system has been commissioned and handed over to Solrød Fjernvarme in Denmark following a completed test phase. The system met all technical requirements and achieved a higher performance level than initially specified.

The installation was delivered as a turnkey EPC project and includes both the heat pump system and integration into the existing district heating plant. The scope also covered expansion of the technical building and connection to existing infrastructure, including heat storage.

The system uses ambient air as its primary heat source and is designed to support a growing district heating network. The additional capacity helps ensure stable supply for both existing and new consumers as demand increases.

A key feature of the solution is the use of CO₂ as a natural refrigerant. Compared to synthetic alternatives, CO₂ offers a low environmental impact while maintaining high efficiency in district heating applications.

The project reflects a broader trend in district heating: utilities are increasingly combining heat pumps, storage and existing assets to build flexible, fossil-free systems.

WHY IT MATTERS

Commissioning performance is critical for utilities. This project shows that well-integrated heat pump systems can meet — and exceed — expected performance in real operation.

 

This article was originally published under Aalborg CSP and has been editorially adapted for aalborg hc systems.

WHAT WE DID

Proven at scale,
delivered worldwide

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1 MW biomass heat pump
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1.2 MW CO₂ heat pump
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1.2 MW CO₂ heat pump

2.5 MW wastewater heat pump
Frederikssund (DK)

2.5 MW wastewater heat pump

11,000 m² PTES lid solution
Høje Taastrup (DK)

11,000 m² PTES lid solution

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2.5 MW heat pump system

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ANY QUESTIONS?

FAQ

What does aalborg hc systems deliver?

aalborg hc systems designs and delivers integrated heating and cooling systems in new and existing networks.

This includes:

  • large-scale heat pumps
  • thermal energy storage (TES and PTES)
  • integration of multiple heat sources

The focus is on complete system solutions, not standalone technologies.

Can you integrate into existing district heating plants?

Yes. Most projects involve integration into existing infrastructure. aalborg hc systems connects new technologies to:

  • existing networks
  • boilers and CHP units
  • available heat sources

The result is a coordinated system upgrade, not a replacement of existing assets.

Do you act as EPC contractor?

Yes. aalborg hc systems delivers projects on an EPC basis.

This covers:

  • engineering and system design
  • procurement and supplier coordination
  • construction and commissioning

The responsibility remains with one party from concept to operation.

Which heat sources can you integrate?

aalborg hc systems integrates multiple heat sources within one system, including:

  • wastewater
  • geothermal energy
  • ambient air
  • industrial excess heat

Solutions are designed as source-agnostic systems, optimised for local conditions.

What do you need to get started?

A project can start with a limited set of data:

  • heat demand profile (load curve)
  • supply and return temperatures

Based on this, aalborg hc systems defines a first system concept and integration approach.