This research presents results of the assessment of solid biofuels (residual biomasses from agricultural crops) in the state of Mato Grosso do Sul, in the period 2007-2012, for energy in agricultural uses. It is pointed out the available quantity, its geographic location at micro and meso regions and energy conversion potential. The methodology is based on a survey on municipal agricultural production of the Brazilian Institute for Geography and Statistics (quantity and local availability, per year) followed by determination of the amounts of agricultural assessed residues, and then applying equations from the literature to estimate the amount of energy (J) and power (kW) obtained from the thermal conversion of residual biomasses. Results are presented for three residual biomasses from agricultural crops (corn cobs, rice husk and sugarcane bagasse) with cartograms for all micro regions at the state of Mato Grosso do Sul, graphics for quantification in the cities where crops production occurs and a table for total energy obtained by conversion processes. For the whole state of MS, Dourados micro region was identified as the most promising for energy in agriculture with three main cities (Dourados, Rio Brilhante and Maracaju), by solid biofuel availability to provide about 11% of the total electrical energy consumption in 2014.
A B S T R A C TEvaluation of fuel consumption in internal combustion engines (ICE) of agricultural machinery and equipment is important in determining the performance under various operating conditions, especially when using biofuels. This study consisted of experimental evaluation of the gasoline (petrol)/ethanol consumption in a two-stroke 1-cylinder ICE, Otto cycle, functioning as an air blower for agriculture and related applications. A methodology for tests of non-automotive ICE, based on ABNT/NBR technical standards, was considered. The presented results refer to operation with commercial and non-commercial fuel blends. Characteristic curves for the tested equipment are presented, identifying consumption conditions and trend in the whole operating range of angular speeds (RPM), for five fuel blends (gasoline/ethanol). For the operating conditions of minimum and maximum angular speeds, 20 and 30% ethanol blends had the highest and lowest fuel consumptions, respectively.Consumo de combustível em soprador de ar para uso agropecuário em diferentes condições operacionais R E S U M O A avaliação do consumo de combustível em motores de combustão interna (MCI) em máquinas e equipamentos agrícolas é importante na determinação do desempenho em condições diversas de operação sobretudo quando biocombustíveis são utilizados. Este trabalho consiste da avaliação experimental do consumo de gasolina/etanol de um MCI, ciclo Otto, 2T e um cilindro, acionando um soprador de ar, utilizado em aplicações na agropecuária e afins. Foi considerada metodologia para realização de ensaios em MCI não automotivos, baseada em normas técnicas NBR/ABNT. Os resultados apresentados se referem ao funcionamento com misturas combustíveis comerciais e não-comerciais. Curvas características para o equipamento ensaiado são apresentadas identificando as condições de consumo e o comportamento em toda a faixa operacional de rotações (RPM), para cinco misturas combustíveis (gasolina/etanol). Nas condições operacionais de rotações mínimas e máximas as misturas de 20 e 30% de etanol na gasolina apresentaram o maior e o menor consumo, respectivamente.Key words: agricultural machines energy in agriculture internal combustion engines biofuels Palavras-chave: máquinas agrícolas energia na agricultura motores de combustão interna biocombustíveis
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