Helsingborg and Mölndal, Sweden

The Swedish demonstrator is made up of two demo sites.

The City of Helsingborg

Helsingborg is a town in the Swedish province of Scania. The town of 108,334 people is Sweden's closest point to Denmark. Helsingborg is a picturesque coastal city and one of Sweden's oldest cities. The town is a key regional commerce, transportation, and business hub.

The Helsingborg Demonstrator

The Helsingborg demonstration site comprises of a newly constructed low-temperature sub-network that uses a borehole seasonal thermal energy storage system with a centralized heat pump. During the summer, industrial surplus heat will be used to charge the borehole store. The network will provide domestic hot water and space heating to four residential buildings (110 units) and one office building. The office building will also have district cooling. The network is made up of a 4-pipe distribution system that runs at 40°C to provide space heating and at 60°C to provide residential hot water.

The demonstrator aims to achieve the following goals:

  • Installation of a borehole seasonal thermal energy storage system
  • Installation of a centralised heat pump to meet the baseload energy demand of the buildings
  • Installation of a PV-T field recovering heat into the seasonal storage
  • Smart control implementation to exploit the cheapest heat sources between the DH and the borehole field according to the electrical and thermal (DH) energy prices

    The buildings are now operational, and data from the steering and control system is being transmitted to Eurac via a newly built API.

    The Area of Mölndal

    Mölndal is a part of the Gothenburg urban area on Sweden's west coast and the administrative center of Mölndal Municipality. The municipality has a population of 60,000 people, with 40,000 living in Mölndal proper.

    The Mölndal Demonstrator

    This demonstrator is made up of a newly constructed low-temperature sub-network that makes use of a borehole seasonal thermal energy storage system. Domestic heat is provided by a centralized heat pump, while hot water is provided by a local heat pump. The newly constructed DHC sub-network is linked to the existing DH network. The new DHC sub-network will service a complex that includes a historic manufacturing building that has been turned into a contemporary office, two new office buildings, five residential buildings (with apartments), and one hotel.

    The demonstrator aims to achieve the following goals:

    • Installation of a borehole seasonal thermal energy storage system
    • Installation of a centralised heat pump
    • Connection to the existing DH network based on 100% biofuel

    The buildings are now operational, and data is being transmitted from the steering and control system to Eurac via a newly established API.