Ammonia to heat homes in the Netherlands

By District Energy posted 04-17-2019 11:12


Charlotte McLaughlin, AMMONIA21


Hengelo, a Dutch city in the east, has nearly completed a new district-heating network using ammonia heat pump technology.

“We have delivered our second decentralised energy centre: ‘DEC Noord’,” Rolf Broekman, a consultant at Qirion, told “This currently has two heat pumps and is prepared for five heat pumps. One-and-a-half years ago, we installed ‘DEC Zuid’, which has one heat pump but can be extended to three HPs." 

Network company Firan, heating company Ennatuurlijk and the municipality Hengelo are conducting the district-heating project collaboratively. Qirion was responsible for designing and realising the district heating heat pump project.  

“Each ammonia heat pump has a capacity of [1MW] and delivers rest heat from salt producer Nouryon to up to 70°C. This has a COP of 5.5 to 6.0, where the source of the extra heat is cooled from 40 to 25°C,” Broekman said.

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