Innovative solutions for the prevention of mould infestation in church organs
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In the last decades, an increasing infestation with moulds has been detected in church organs. Although the general causes are largely known, the implementation of preventive measures is difficult in individual cases for technical and financial reasons. In a research project, procedures for mould prevention in organs were evaluated on the basis of theoretical considerations, computer-aided simulations as well as laboratory and practical tests. The climate data, which were recorded in four church organs in the Dresden area and in eastern Saxony over a period of two years, were incorporated into a specially created numerical simulation model. In this way, inaccessible organ components of the wind system could be represented as individual fluidic models, and critical areas were visualized. Positive effects of ventilation and air filtration were proven in laboratory tests and in the objects.