Depending on the growing industry and population, energy needs are increasing day by day. In parallel, our external dependency on energy also increases. This issue made it necessary to use of renewable energy sources as much as possible. As an extension of efforts to reduce energy external dependency by increasing the use of renewable energy resources in energy production, pellet fuels from renewable energy sources have become widespread in recent years with the production of suitable systems, especially for heating purposes. In this study, a pellet-fueled top feed cylindrical boiler has been designed which is used for the heating of individual houses and buildings. In the design of the boiler, high efficiency and low emission are aimed. Performance tests of the pellet boiler manufactured for a thermal power of 60 kW were carried out and the results were discussed. During the experiments, changes of CO, NOx emissions, flue gas outlet temperature and thermal efficiency values were recorded for each case and evaluated in real working conditions. As a result of the experiments, it was determined that the boiler efficiency was 93-94% and the flue gas temperatures were about 110 °C. CO emissions were about 80 and 120 ppm and NOx emissions were between 100-110 ppm. Performance tests showed that the efficiency of the boiler is high and the emissions are at a satisfactory level.  

Keywords - Biofuels, Pellet, Pellet boilers, Boiler design

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