MECHANICAL RECOVERY OF BIOMASS LINKED WITH BRUSHWOOD CLEARING OPERATIONS

Información del proyecto

Identificador del acuerdo de subvención: BM.-00192-83

Proyecto cerrado

Fecha de inicio 8 Octubre 1984

Fecha de finalización 31 Diciembre 1986

Financiado con arreglo a

• Programme (EEC) of demonstration projects relating to the exploitation of alternative energy sources and to energy saving and the substitution of hydrocarbons, 1983-1985

Coste total

€ 554 443,00

Aportación de la UE

€ 110 888,00

Coordinado por

C.I.M.A.F.
France

Objetivo

To collect for energy purposes the biomass resulting from scrub clearance of Mediterranean forestry areas. The scrub clearance is carried out by use of a specially designed machine. The project involves total scrub clearance of 120 ha in the Departements du Gard and du Var. The goal is the scrub clearance of 1 ha/d which would yield +/- 20 T/d of fresh biomass collected.
The project has shown, on the basis of the two 120 ha works done in the Departements du Gard and du Var, that, with some minor improvements done during the project, the equipment is very efficient. However, the yield is very dependent on the working conditions.
The influence of different parameters such as weather conditions, vegetation characteristics, plot topography and soil nature have been highlighted.
The hilly and stony nature of the Mediterranean relief has only allowed the harvesting of the cut biomass for one third of the areas cleared. For these areas, the biomass recovery yield was very satisfactory and amounted to
56 m3/ha while 1.15 ha/day was cleared. Under these later circumstances and taking into account the income resulting from scrub clearance, the production cost per energy unit is well below the (November 1988) fuel oil price.
However, the wood chips produced must also find a final user which is located close enough to the production site. In the present project, it was only possible to sell 15 % of the biomass recovered.
Generally speaking, one may say that positive economic results for biomass recovery and use will only normally be achieved provided that the following conditions are fulfilled: soil not too stony and not too hilly, vegetation dense enough and transport distance to the final user not too high.
The machine used called "Scorpion" and developed from a prototype, carries out the functions of cutting, harvesting, grinding, storage and transport of the biomass.

It was specially designed to work in the difficult vegetation and relief conditions of the Mediterranean forestry.

The machine is 7m long, 3m high and 2,16m wide. It is able to cut trees with a maximum diameter of 25 cm soft wood. The storage capacity is about 7 m3 and the power is 240 hp.

The biomass collected is to be used for heating purposes. The harvesting of biomass allows also the reduction in the cost of scrub clearance which is in several cases necessary to reduce the fire risks.

Ámbito científico (EuroSciVoc)

Este proyecto aún no se ha clasificado con EuroSciVoc.
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Programa(s)

• ENG-ENALT 2C - Programme (EEC) of demonstration projects relating to the exploitation of alternative energy sources and to energy saving and the substitution of hydrocarbons, 1983-1985

Tema(s)

• 1.1 - BIOMASS HARVESTING

Convocatoria de propuestas

Datos no disponibles

Régimen de financiación

DEM - Demonstration contracts

Coordinador

C.I.M.A.F.

• Aportación de la UE: Sin datos
• Dirección: BVD CARNOT PROLONGE 7 BP 17 ; 51310 ESTERNAY ; Francia
• Coste total: Sin datos