This tender concerns the installation of a hot water flare boiler with absorption heat pump

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Today, Aars District Heating is primarily supplied with heat from the waste plant (furnace 1 + furnace 2), in addition to peak supply with wood pellets and gas, as well as a smaller electric boiler.

In addition to Aars, Aars District Heating also supplies Haverslev, Suldrup and Hornum with district heating.

Aars District Heating wants to close down their current waste furnace 1, and instead establish an air heat pump. When combined with waste furnace 2, the power production from this can be utilized by the heat pump. In addition to an air heat pump, an electric boiler will also be established, as well as a hot water flare boiler with absorption heat pump. This tender concerns hot water flare boiler with absorption heat pump..

The waste facility is covered by the CO2 quota scheme, and when kiln 1 is decommissioned, the fossil capacity on the land register will be less than 20 MW, which is why Aars District Heating will fall below the limit for the CO2 quota scheme.

Realisation of the project will also improve the plant's operating economy and increase the plant's multi-prongedness, reducing dependence on one fuel, as well as ensuring reserve load capacity.

Overall plan for Aars Varmeværk:

- Oven 1 closed

- Oven 2 summer closed

- 10 MW hedtvands tile part with absorption heat pump + associated building

- Approx. 7 MW air heating at 8 degree C air level + associated building

- Option 1: utilization of flue gas heat from Furnace 2 as a heat source

- Option 2: production of low temperature heat for absorption heat pump.

- 10 MW Elkedel

- 8.000 m3 akkumuleringstank

Prior to this tender, project proposals have been prepared in accordance with the Heat Supply Act. Project proposals are expected to be approved prior to contracting.