Johnson Controls delivers Germany's first seawater heat pump

Johnson Controls, the leader in smart, healthy and sustainable buildings, is supplying the municipality of Neustadt in Holstein, Germany, with a state-of-the-art heat pump that will use water from the Baltic Sea to generate green energy. The system will provide part of the heat supply to a new district in the city's harbor via its own heating network. This seawater solution is the first of its kind in Germany on this scale and represents a future model for the transformation of heat supply.

Johnson Controls is providing its SABROE DualPAC heat pump — a two-stage heat pump that features a modular system to enable high temperature lifts — ideal for use in district heating applications. It uses sea water to generate a heating output of up to 700 kW. During the winter months when the water is colder, it will extract around 500 kW of heat from the water, which is raised to a higher temperature using electrical energy and then fed into the new district heating network. At peak times, it will be supplemented by heat from a nearby waste incineration plant and a heat storage facility.

The DualPAC heat pump, manufactured at Johnson Controls’ plant in Denmark, is at the heart of a pioneering project by the Neustadt municipality and is being funded by the Federal Ministry for Economic Affairs and Climate Protection.

Most of the world’s heating needs today are met with direct fossil fuel combustion. To decarbonize buildings and maintain a reliable grid, electrifying these systems with heat pumps is key. They use one third of the energy of conventional heating systems and can generate three to eight times as much energy as they consume.

Johnson Controls was among the first providers of environmentally friendly heat pumps over 50 years ago and today offers one of the world’s most comprehensive range of heat pumps designed for a range of commercial, residential and industrial uses. The company provides solutions that lever-age a range of natural energy sources such as sea, river and lake water, wastewater, waste heat, solar, biomass, geothermal.

Johnson Controls recently expanded its manufacturing sites in Holme in Denmark, Izmir in Turkey, and Nantes in France, to meet growing heat pump demand in Europe, and continues to expand its portfolio to provide higher temperature heating at colder conditions, and across a wider range applications.

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