Evaluation of a batch-type biomass stove prototype using asai and pine sawdust pellets as fuel, in accordance with regulation NB/ISO 19867-1, for implementation in rural areas of Bolivia
DOI:
https://doi.org/10.52428/20758944.v21i58.1389Keywords:
Biomass, Solid fuels, Biomass stovesAbstract
In the department of Pando, Bolivia, large quantities of asaí seed waste are generated without proper utilization. This study evaluated the thermal and environmental performance of an improved batch-type biomass stove, in accordance with standard NB/ISO 19867-1, using pine sawdust pellets and mixtures with asaí waste as alternative fuels.
Experimental tests were conducted with different fuel combinations (100% pine pellets, 40% asaí - 60% pellets, and 30% asaí - 70% pellets) to analyze thermal efficiency, energy consumption, CO, CO₂, and SO₂ emissions, as well as particulate matter generation. Water boiling tests and gas analysis were used for evaluation.
The results indicated that the use of pure pellets achieved a thermal efficiency of 35%, while the asaí mixtures recorded 34.20% and 34.61%. In terms of emissions, CO varied between 407 ppm (pure pellets) and 408 ppm (30% asaí mixture High speed) and 310 ppm (30% asaí mixture, medium speed), with a maximum CO₂ concentration of 2.47% v/v and approximately 4 ppm of SO₂.
The study concludes that the combination of asaí waste with pine pellets in improved stoves represents a viable and sustainable alternative to reduce environmental impact and utilize agro-industrial waste in Bolivia.
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