Abstract
An experimental investigation of an open core down draft biomass gasifier is carried out using woody and densified fuel. Variation in temperatures and pressure drop across the gasifier with different fuels and fuel consumption rates is presented. The densified fuel satisfactorily gasifiers in a 180 kWth open core down draft gasifier. The gasifier performance with different fuels shows that the calorific value of producer gas varied in the range of 4.3–4.8 MJ m−3 and cold gas efficiency in the range of 66–73%. The flame temperatures of the producer gas for all feedstocks varied in the range of 750–857°C. The study showed that there was a flow problem with densified fuel. To overcome this problem, scheduled ramming or pocking is recommended. A saving of around 23.58 USD per day of fuel capacity operation is being effected on fuel and carbon credited in additional benefit.
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