BB-CLEAN

Strategic tools towards a sustainable use of biomass for low carbon domestic heating

    

 

BOOKLET ON BOILER CHARACTERISTICS 

​Among energy technologies, burning wood involves big environmental issues, especially in the Alps Region, where customs, wood availability, energy needs often have to deal with pollution levels, such as PM concentration, and related regional environmental policies. Burning wood with good rates of air emissions is possible.  This booklet on boiler characteristics offers datasheet of each boiler and their efficiency based on the characteristics.  

    

      

BOOKLET ON WOOD SUPPLY CHAIN 

Wood biomass for energy purposes is a renewable source that could replace the combustion of polluting oil products. Recently, following Kyoto Protocol, the biomass use for energy purposes has been promoted, at European and at national levels, in planning documents and through various economic incentives. This booklet offers some local biomass supply chain analysis, as collected by project partners and observers for the areas of Chamonix Valley Municipalities, Slovenia and Aosta Valley. The purpose is to benchmark, when possible, the state-of the-art of wood supply chain by a “SWOT” analysis, based on surveys and reports already available when the “BBClean” project has started. These reports show different levels of knowledge and data quantity; at the moment, they have a good analysis level only for the three listed areas. 

   

        

BOOKLET ON AUXILIARIES TO BE COUPLED TO BIOMASS COMBUSTION APPLIANCES AND ENERGY SAVINGS METHODS

Heat delivery by biomass systems is in many ways more environmentally friendly, whilst also a good economic solution. This is especially true in the case of changing from the oil heating to a comparably comfortable pellet heating system, which can quickly lead to a return on investment. In order to reduce the heat demand and therefore energy costs in the long run, the heat losses through the building envelope must be minimized. This is achieved by insulation of the exterior wall, roof or top floor ceiling and the basement ceiling. With regards to the windows thermal insulation glazing has priority This booklet focuses on aspects which are of major impact on overall system efficiency of biomass use for heating purposes in dwellings. First, the critical aspects for dimensioning biomass burning systems are defined. Secondly, the factors impacting heat distribution are explained followed by different types of heating systems. In the end the current label regulations in the EU are presented. 

   

        

BOOKLET ON POLLUTION ABATEMENT SYSTEMS

The combustion of biomass causes emissions of harmful flue gases and particulate matter into the atmosphere, which is mainly due to the incomplete combustion of these materials. When it comes to increasing efficiencies and reducing pollution, non-technical measures such as consumer behaviour and fuel quality play a significant role. However, those primary measures are not enough to reduce the particulate matter emissions sufficiently. End-of-pipe technologies are used to decrease the amount of particulate matter released into the atmosphere. This deliverable focuses solely on secondary measures and aims to explain the most common abatement technologies.

    

BOOKLET ON EXPERIMENTAL RESULTS

Before a biomass boiler or stove is released to the market the manufacturers have to prove, that their appliance fulfils the legal emission limits. This is achieved with standardised type tests. However, these testing conditions do not fully depict the actual operating conditions. In reality, aspects such as fuel quality or consumer behaviour have a significant impact on the amount of emissions released during operation. This booklet focuses on experimental test results on biomass furnaces that were conducted under real operating conditions and the comparison of those emissions to the type test results. The first part of the booklet deals with existing literature and publications of such studies whereas the second part aims to show experimental results from certification reports. Report is especially focused on the impact of fuel quality on the formation of emissions.