The agricultural building firm Gråkjær Byg has been in charge of the construction of the piggery, installing low energy ventilation solutions, and LED-light sources.

Heat pumps, geothermal energy and cooling of slurry have been installed by the contracting company Green Source which is a green sister company to Trigon.

- We have installed a heating plant with two heat pumps of respectively 85 and 65 kW. Out on the field, we have ploughed four kilometres hoses into the ground for the ground source heat pump system. In addition, we have placed hoses in the slurry basins inside the building for cooling, explains Frans Hansen, the project manager at Trigon and Green Source.

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- If we were to operate a ground source heat pump system with hoses in the ground outside of the piggery, we would have to use a greater number of hoses. With the cooling of slurry, we can heat the entire building.

The scale of the building is extensive, as there has to be space for 950 sows and the 35,000 piglets they will conceive on an annual basis.    

With the new plant, the farm will reduce their oil consumption of 65,000 litres heating oil. This means that the stables will no longer be heated up by the use of fossil fuels.

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- The cooling of slurry also means a reduction of ammoniac evaporation inside the piggery and, as a result, the pig farm will use less energy on ventilation. We have thereby cut our energy consumption in half, says Frans Hansen.

Green Source has delivered and installed the entirety of the new heating plant with DVI heat pumps.

- Source: Energy Supply