Vantaa Energy plans to construct a 90 GWh thermal energy storage facility in underground caverns in Vantaa, near Helsinki. It says it will be the world’s largest seasonal energy storage site by all standards upon completion in 2028.
A Slovenian research group has proposed using a heat pump booster instead of vapor compression technologies in low-temperature district-heating substations and has found that this combination may raise the supply-water temperature from around 32 C to 42 C. In the proposed system configuration ten single-stage Peltier modules were used, each with a maximum cooling power of 165 W and a maximum electric power of 289.2 W.
A research group led by the Technical University of Denmark has analyzed how booster heat pumps may effectively improve the performance of ultra-low temperature district heating networks in colder climates and has found that the refrigerant change plays a crucial role. They also said that powering these heat pumps with renewables may also better integrate clean sources in energy systems.
Researchers in Finland say that decentralized heat pumps could provide significant cost savings when selling surplus heat into district networks. However, they warned that capital expenditure remains high.
Germany’s MAN Energy Solutions has supplied two 50 MW seawater heat pumps for district heating at the port of Esbjerg, Denmark. They use CO2 as a refrigerant and will be powered by nearby wind farms. The project will start producing 350,000 MWh of heat per year in the fall.
Property developer Steenoven and an undisclosed construction contractor have started drilling a borehole for a new thermal energy storage system in the historic city of Bruges, Belgium.
The use of waste heat from hydrogen production in district heating could increase the attractiveness of green hydrogen, according to new research from Sweden.
The system will provide district heating to the city of Kankaanpää in western Finland. It has 100 kW of heating power and 8 MWh of energy capacity.
A Chinese-Finnish research group has proposed the use of seasonal, soil-based thermal energy storage in combination with photovoltaics in residential districts. They have found that the hybrid concept could cover up to 58% of total heating demand.
With each of the 10-year network development plans produced by Europe’s electricity transmission system operators years in the making, the latest such publication may already be out of date as the bloc prepares to fast forward its energy security and climate change ambitions.
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