Kiowatt is a company promoting the know-how of LuxEnergie S.A., in partnership with Groupe François, for the establishment of green energy production units.

Kiowatt is mainly active in the production and distribution of energy from plants using biomass  and production of fuels in the form of wood pellets.

Made in Luxembourg

Roost, the trigeneration site, is the first project initiated by Kiowatt.

Kiowatt pursues two main energy objectives here:

  • the cogeneration process allows the use of the potential energy of a fuel to produce electricity and heat for other processes;
  • the maximum utilisation of heat lost in the process by the succession of several thermal consumers (pellet production, absorption refrigerating machines and remote heat networks) with complementary characteristic requirements.

 



 

Made in LuxembourgProduction of
Badger Pellets®

Our Badger Pellets®® are certified DIN plus (conforming to European quality standards EN14961-2), the most demanding German certification, which takes into account the products's characteristics as well as the manufacturing process.

The pellet production facility uses only fresh, debarked wood. The raw material for the manufacture of wood pellets consists of sawdust, wood chips and fresh, small-diameter logs, which cannot be used for any other purpose and where we control the characteristics and variations. The final quality of our pellets depends, in fact, on the quality of these raw materials. Thanks to this stability of materials, BADGER Pellets® have consistent and optimum quality which are ideal for the operation of your stoves and boilers.

The logs are first debarked and then cut and reduced to chips after which they are transferred to a wet silo consisting of wood chips and sawdust.

Following this treatment, we remove potential ferrous metals from the material flows with a magnetic separator. The sifted sawdust is transported in a low-temperature dryer, while the larger chips are fed to a crusher in order to be fragmented. They are then screened once again.

In the low-temperature dryer (the necessary energy coming from the thermal heat generated via the cogeneration facility), The sawdust is spread over a wide strip running up and down driven by the heated air, and dried until a moisture level of approximately 10% is obtained. They are then transported to the silo. Dried sawdust is then sent on to the pellet presses where the wood is subjected to high pressures during its passage through the channels (extrusion), and is thus transformed into pellets. Finally, the pellets produced are cooled, screened and then placed in the pellet silo.

We then have an efficient distribution network ! Pellets are transferred from a silo to a filling facility, which then allows blower trucks to be loaded for bulk delivery. To provide a commercial supply  BADGER Pellets®® are distributed in Luxembourg by Husting – Reiser et Petit. Each distributor has its own blower trucks (approved by metrology) to provide the best service and a high-quality product for you. BADGER pellets can also be delivered to you in 15Kg bags.

To find your nearest dealer   http://www.badgerpellets.com/fr/contact/where

To access the BADGER Pellets site® Badger Pellets Site®

Production of heat and electricity

Cogeneration Plant

The cogeneration plant is fed each year with a little over 35,000 tonnes of waste wood from Luxembourg, which up to now has been exported and unaccounted for as energy produced from renewable energy sources in Luxembourg. Combustion heat enables the production of a superheated steam in the boiler which is then used to produce electricity using a (2.7 MW) turbine, and in the process, heat.

À At full capacity, the facility will annually produce 21 GWh of electricity which will then be injected into the public network. This is enough to supply about 3,500 households and substitutes for an equivalent amount of electricity that would otherwise be generated from fossil fuels. This production of green electricity thus allows for reduction in emissions of CO2.

Most of the thermal energy produced in the boiler, or about 11.5 MW (93 GWh per year) is used for the following three applications:

  • heating dry air from the Kiowatt pellet- production dryer system ;
  • refrigeration production for the nearby data centre using absorption refrigerating machines, which thus become, in the present state of things, the first « Green Datacentre » in the world;
  • injection into a heat network close to the town of Bissen.

Harnessing this heat allows energy to be replaced that would otherwise be generated from fossil fuel and thus reducing CO2. Overall, the cogeneration facility thus not only makes efficient use of the energy contained in the waste wood used as fuel, but at the same time, a reduction of CO2, since the fuel is CO2 neutral.

Refrigeration
production

On the same site we find a cooling plant from DataCenterEnergie S.A. (A partnership of the companies LuxEnergie and LuxConnect). It produces refrigeration for the LuxConnect S.A. data centre, which is just opposite the Kiowatt plant.

The technical concept of the DataCenterEnergie refrigeration plant is based on the production of refrigeration through absorption refrigerating machines that are fed, from the thermal side, by the vapour exhaust of the Kiowatt wood- recovery facility.

The two machines for production of refrigeration by absorption have a cooling capacity of 2,500 kW each. To achieve this result, they require a heat output of 3,550 kilowatts per absorber.

The heating power supply occurs via a heat pipe located a few meters away between the Kiowatt heating plant and the DataCenterEnergie facility.