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References ULH-Series Products

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Manager: Rottensteiner Heinrich & co. Snc • Location: Renon (Bolzano/Bozen, South Tyrol, Italy)
Plant: 2 x ZE-40-ULH Low-Temperature Organic Rankine Cycle (ORC) Modules, nominal output 40 kWe each
Application: Heat recovery from engines (MAN vegetable oil-fueled gensets)

Mappa di Renon (BZ)The client who commissioned this plant - Rottensteiner & Co Snc - is a well-known construction company having its seat in Renon, a small village in the Alps near Bozen, in South Tyrol, northern Italy. Like many other in the region, this plant 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 provincial administration for small-scale power generation plants fueled by biomass or other renewable sources.

In this particular case the Organic Rankine Cycle system supplied by Zuccato Energia supplied is composed of two ZE-50-ULH ORC modules outputting 50 kWe each, fed by waste heat recovered from the cooling jackets and the exhaust fumes of two MAN 420 model 2842 LE 211 gensets, fueled by vegetable oil and rated at 420kWE electrical output. The addition of the ORC modules raises the overall output from 840 to 940 kWE, a productivity and efficiency increase of more than 10%

An interesting particular of this plant is that the ORC modules are mounted on two custom-designed skids, longer and narrower than the standard ones, which allowed to better take advantage of the tight available spaces, 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 electric output of the plant is injected into to the national distribution grid, as required by Italian law, while the residual thermal energy is used to heat the firm's offices, sanitary water and the concrete mixing plant. It is also supplied on request to the local district heating system in Collalbo.

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 designed to burn heavy fuel oil.

As with all biomass-derived fuels, rapeseed oil is CO2-neutral, as the CO2 released during combustion is the same the plant captured when growing. Furthermore, the residue from rapeseed seed pressing can be used as a high-protein foodstuff for cattle.

Below you will find a photogallery regarding this plant. Click on an image to enlarge it.
The firmThe firm Panorama from the firm's upper forecourtPanorama from the firm's upper forecourt The ZE-50-ULH LT-ORC skid being unloadedThe ZE-50-ULH LT-ORC skid being unloaded The first ORC module being installedThe first ORC module being installed Both ORC module skids in place, pipes yet to be fittedBoth ORC module skids in place, pipes yet to be fitted The completed ORC system installationThe completed ORC system installation The cooling towers, installed behind the buildingThe cooling towers, installed behind the building

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