BioMatNet Item: JOULE JOR3-CT95-0056 - Development of newly designed wood burning systems with low emissions and high efficiency

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JOULE JOR3-CT95-0056
Development of newly designed wood burning systems with low emissions and high efficiency

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JOULE/THERMIE Programme : Solid Biofuels : Thermochemical Conversion : Wood (Lignocellulose)

	Type of Project	Shared Cost
	Contract No	JOR3-CT95-0056
	EC Contribution	1,061,000 ECU
	Start Date	06/12/95
	Duration	36 Months

Development of newly designed wood burning systems with low emissions and high efficiency

Objectives

The challenging aim of this project is to improve the combustion behaviour of small and medium-scale wood combustion systems as stoves, home heating systems, and boilers in a range from smaller than 15 kW_th up to 500 kW_th in order:

to reduce products of incomplete combustion such as carbon monoxide (CO), volatile organic compounds (VOC), and particles
to increase the thermal efficiency
to define guidelines for low emissions for small scale stoves and boilers tiring untreated wood
to develop and manufacture these low emission combustion units.

Technical Approach

CO₂ emissions can be reduced using biomass, e.g. natural wood residues. for thermal utilisation. The studies will focus on the combustion of untreated wood fuels in systems operating with batch-wise and quasi-continuous teed. The burn cycle of the combustion, characterised by having initial, main, and final phases, will be investigated. Theoretical, experimental, and mathematical modelling studies will be made of the reaction zones of the stoves and boilers. The experimental investigation will focus on gas concentration, temperature, velocity and turbulence measurements. A non-intrusive two-colour laser Doppler velocimeter (LDV) will measure the velocity and turbulence. These investigations will be the base both for guidelines that will be worked out for low-emission wood-fired stoves, home heating systems and boilers and for prototypes manufactured within the project.

Expected Results

The main goal of this project will be to define guidelines for the development and construction of low-emission wood combustion systems of up to 500 kW thermal power. By offering prototype low-emission wood combustion systems, the use of wood fuels in the domestic and smaller consumer section can be promoted. An increased controlled use of wood fuels will reduce the CO₂ emissions and will support forestry and agriculture.

Contacts

Coordinator

Hartmut MAIER / Universitat Stuttgart GERMANY

Participant