Bioenergiepark Dahlenburg is a very good example of how biogas plants are already capable of reliably generating renewable energy to protect our environment.
In Dahlenburg, the process known as dry fermentation is employed. That means that absolutely no use is made of liquid manure or slurry. Nor are any waste materials used. These 'NawaRo' units ferment and generate electricity from the 'energy plants' also known as renewable raw materials, e.g. maize, root vegetables or grain. Roughly 32,000 tons of maize and around 7,000 tons of whole-plant silage (winter rye) is grown and supplied by 20 farms in the region.
The task for HOTMOBIL DEUTSCHLAND lay in building an appropriate heating unit to cover emergency situations and periods of peak demand. First and foremost, this unit had to be capable of running on the biogas generated at the plant, with natural gas as backup fuel option. To make optimum use of heat from the existing bio-heating power station, a storage vessel with a capacity of 20,000 litres was required. Since the unit would be operated outdoors, excellent weatherproof insulations was also required. Furthermore, stringent requirements applied to acoustic insulation. Due to the local presence of several public buildings such as schools etc. and a campsite, the noise emission limit is set at 45 dbA.
|Heat output||1,000 kW|
|Medium||hot water 90°/70°C|
|Fuel||options of biogas & natural gas|
|Noise emission limit||less than 45 db (A)|
|Storage tank||20.000 litres, waterproof insulation|
|Container dimensions L x W x H||6,058 x 2,438 x 2,591 mm|
|Dimension of storage tank, approx.||Length 4,490 mm / diameter 2,500 mm|
|Flue unit||6 m above ground level|