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Lombardy 03

Manager: Private italian firm • Location: Province of Brescia, Lombardy, Italy
Plant: 1 x ZE-150-LT Low-Temperature Organic Rankine Cycle (ORC) Module, nominal output 150 kWe (derated to 135 kWe)
Application: Power generation in combination with a boiler burning biomass (end-of-life shipping pallets)


MappaThe client who commissioned this plant is a firm from a small town in the province of Brescia, in northern Italy, dealing in wooden shipping pallets and fully authorized for transport, stockage and disposal of wooden waste. The waste biomass it acquires in its line of work (mainly wooden pallets no longer usable for shipping) is burned into a 1-MWe movable-grate boiler by Herz which feeds heat to a ZE-150-LT ORC module.

The versatility of the ZE ORC modules in handling partial loads has come to fruition in this plant, where the generator has been derated to 135 kWe from the nominal 150 to meet the client needs. An economizer placed on the flue line also recovers part of the heat to dry and preheat the wooden biomass.

The system, as every ORC module we supply, is mounted on a self-supporting frame ("skid") that includes exchangers,turbogenerator, and control panel. The skid, in indoor configuration, is housed in a purpose-built building that also hosts the boiler and the biomass hopper, while excess heat is dissipated by an external evaporative cooling tower. The system is entirely remote operated and does not require the presence of an operator.

It is also interesting to note the financing formula that has been used to build the plant. With our collaboration, the client has been put in contact with an E.S.Co. that financed the whole plant in exchange for its ownership and earnings for the first years of the plant's life, during which the client will supply the biomass at zero cost. On expiry of the payback period, plant ownership will be given back to the client, which will have then acquired the plant practically for free.

Wooden biomass is an environmentally compatible and renewable fuel, with zero CO2 impact, as the CO2 released when burning is the same CO2 the plants captured during their growth

Below you will find a photogallery regarding this plant. Click on an image to enlarge it.

A general view of the building housing the plantA general view of the building housing the plant The shredder which reduces the unusable pallets into wooden chipsThe shredder which reduces the unusable pallets into wooden chips An overview: the aperture in the foreground houses the biomass hopperAn overview: the aperture in the foreground houses the biomass hopper The biomass hopper, with a rake-style feeding systemThe biomass hopper, with a rake-style feeding system The boiler seen from the right sideThe boiler seen from the right side The boiler seen from the left sideThe boiler seen from the left side The ash filter (black) and the economizer (green)The ash filter (black) and the economizer (green) The ZE-150-LT ORC module in place, seen from the control panel sideThe ZE-150-LT ORC module in place, seen from the control panel side The turbogenerator (silver cylinder) inside the skid frameThe turbogenerator (silver cylinder) inside the skid frame he skid seen from the thermal connections sidehe skid seen from the thermal connections side The water treatment system for the cooling towerThe water treatment system for the cooling tower L to R: the bag filter for flue gases, the chimney and the cooling towerL to R: the bag filter for flue gases, the chimney and the cooling tower

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