Dear Friends
Via Robert van der Plas.. In section 7 it says that others (for example Ryde and Johansson, 2007) found condensable particle mass (which are picked up using a diluter) to exceed solid particle mass by as much as 10:1. It kinda speaks against the worthiness of running biomass stove tests using 'hot' dry dust measurements. Regards Crispin http://www.ieabcc.nl/publications/Nussbaumer_et_al_IEA_Report_PM10_Jan_2008. pdf "For existing stoves and boilers, ideal operation is regarded as a major target to reduce PM emissions. Furthermore, the method of ignition is important for the PM emissions of wood stoves and boilers. For typical wood stoves, ignition from the top of the batch of wood logs instead of ignition from the bottom can often avoid visible smoke during start-up and reduce the total PM emissions by more than 50%. For log wood boilers, beside optimised ignition and start-up, the implementation of a heat storage tank is essential, as thanks to a heat storage, part-load operation related to high PM emissions can be avoided. With respect to the measurement of PM emissions, the mass on solid particles in the hot flue gas (as collected on filters) and the additional mass of condensables need to be distinguished. Under poor combustion conditions, the mass of condensables can exceed the mass of solid particles and hence should be considered in future immission inventories.
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