The use of low temperature heat in Copenhagen
The present project on using a larger share of low-grade
surplus heat and increasing system efficiency is an important
step of reducing emissions even further from the present
level of 98 kg/MWh CO₂ emission (2015). The surplus heat will
be harvested from various sources:
• Cooling machines at the CITY2 Mall that will operate
on power from more than 16,358 m² PV plant with an
installed capacity of 2.07 MW (the so far largest roof
mounted PV plant in the Nordic Countries of Europe).
• Cooling machines and cooling of servers at the
Danske Bank data centre, DSB and hotels having a
high cooling demand year round.
At the moment in Høje-Taastrup the DH is based on 49 %
fossil and the CO₂ emission factor is 98 kg/MWh (2015).
Alongside a coalfired CHP-plant called Amagerværket, in the
neighbouring city of Copenhagen, will undergo a transition to
use biomass during the actual project period. The
demonstration project in Høje-Taastrup is interlinked to the
other COOL DH demo site in Lund which is totally fossil-free.
The biomass waste heat freed in Sweden will supply the
Danish side. This means that the COOL DH project will reduce
the fossil fuel consumption in Høje-Taastrup and in Lund. The
recovered waste heat of 10 GWh per year a consumer will
liberate 5000 tons of biomass yearly.