International Journal of Science, Engineering and TechnologyAuthors: Hassan Raja, Abhishek Choudhary, Akul Kumar, Soumya Ranajan Parimanik, Radha Krushna Sahu
Abstract: This paper deals with the design and performance evaluation of an energy-efficient biomass cookstove suitable for a variety of biomass fuels including babul wood (Prosopis juliflora), groundnut shell briquettes (Arachis hypogaea), sawdust briquettes, and cashew nut (Anacardium occidentale) shells. The stove is constructed using refractory insulation (Insulyte-11U) to minimize heat losses and operates on the inverted downdraft gasification principle. Thermal performance testing revealed a thermal efficiency of approximately 35%, with a power output range of 1.53 to 1.76 kW depending on the fuel used. The maximum flame temperature recorded was 763°C for cashew nut shells. Emissions remained within acceptable indoor air quality limits, with CO ranging from 3–6 ppm and CO₂ from 17–25 ppm. The results confirm the stove's suitability for rural households and its potential for fuel savings, reduced emissions, and operational safety, thereby supporting wider adoption of biomass-based clean cooking technologies.
