In this installation, the heat pumps' CO2 refrigerant will absorb a small amount of heat from seawater. Compressors boost the temperature of the CO2 and the system can then transfer this heat, providing water of up to 90C to a district heating system serving 27,000 households."The demand for district heating is exploding," says Mr Decorvet. An urgency to move away from fossil fuels is leading to a rush - particularly in Europe - for bigger and beefier heat pump systems that can power entire towns. But who has the biggest, megawatts-wise?
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