Rottensteiner Heinrich & co. Snc
Renon (Province of Bolzano/Bozen, Alto Adige/Südtirol)Plant Type:
2 x ZE-50-ULH LT-ORC modulesApplication:
Thermal recovery from cooling jackets and exhaust fumes of two vegetable oil - fueled engines
This plant is located in Renon, a small village in the mountains behind Bozen/Bolzano, northern Italy. Like many other similar plants in the region, it was born from the desire to take advantage of the favorable incentives (such as an extremely competitive omnicomprehensive tariff) given by the italian state and the local province for small-scale power generation plants fueled by biomass or other renewable sources.
In this particular case the system Zuccato Energia supplied — composed of two ZE-50-ULH modules outputting 50 kWe each — operates by recovering waste heat from the cooling jackets and the exhaust fumes of two MAN 420 model 2842 LE 211 engine, fueled by vegetable oil and connected each to a 420 kWE
generator. The addition of our two LT-ORC modules raised overall productivity from 840 to 940 kWE
, an increase of more than 10%.
An interesting particular of this plant is that the mpdules are mounted on two custom-designed skids, longer and narrower than the standard ones, which allowed us to better take advantage of the reduced available space, which was otherwise insufficient to contain a plant this size, either ours or our competitors'. Zuccato Energia, as primary manufacturer, was able to modify skid geometry and fit the plant to the available space.
The biofuel used by Rottensteiner and other similar power plants (rapeseed oil from certified EU sources) is an environmentally friendly and renewable power source, made highly competitive by state and regional incentives. Such oil can easily be used as fuel in modified marine engines normally fueled by heavy fossil oil (naphta). The mechanical energy produced is used to operate the plant's main generator.
As with all biomass-derived fuels, such fuel has zero CO2 impact, as the released CO2 was the same the plant had captured when growing. Furthermore, the residue from rapeseed seed pressing can be used as a high-protein foodstuff for cattle.
The produced electric power is sold to the national distribution network, while the residual thermal energy is used to heat the firm's offices, water and the concrete plant. Thermal energy can also, if required, be supplied to the Collalbo district heating plant.
Below you will find a smal photogallery of this installation. Click on an image to see it enlarged in a new tab.
Panorama from the upper forecourt
The ZE-50-ULH LT-ORC skid being unloaded
The first LT-ORC skid being installed
Both LT-ORC skids in place, pipes yet to be fitted
The LT-ORC installation complete
The cooling towers, installed behind the building