Encontro de Energia no Meio Rural Agrener
COLDEBELLA, Anderson, SOUZA, Samuel Nelson Melegari de, SOUZA, Juliano de et al. Viabilidade da cogeração de energia elétrica com biogás da bonivocultura de leite. In Proceedings of the 6. Encontro de Energia no Meio Rural, 2006, Campinas (SP, Brazil) [online]. 2006 [cited 08 December 2013]. Available from: <http://www.proceedings.scielo.br/scielo.php?script=sci_arttext&pid=MSC0000000022006000200053&lng=en&nrm=iso> .
The technological conquests related to the evolution of the agricultural sector are dependent on some form of energy, among them, we can emphasize the electrical power, which has a high cost, and the derivates from petroleum, which are depleting with the years, generating price oscillation, insecurity about the further supplying, besides being highly polluters. Brazil already presents a tradition in the use of renovating sources of energy, emphasizing the electrical power, which is responsible for more than 80% of all electricity consumed in the country, followed by ethanol, a derivate from sugar cane that can be used pure or mixed with gasoline (derivate from petroleum) to substitute it. Although we have this tradition and we are already using some renovating sources of energy, we still have other sources with potential that are little exploited such as the solar energy, eolic energy and the biomass. Due it's a tropical country, Brazil shows a huge potential to the production of vegetal biomass, besides of produce industrial residues and residues generated by the agro industrial activity. The western region is emphasized by the production generated by the agro industries, but, with the increasing of the demand and consequently the increasing of the production, the generation of manure, from bovines, pork, chicken or any other kind of animal is becoming a serious environmental problem. Those residues are important raw materials to the production of biogas, a fuel similar to the natural gas that can be converted in electrical, thermal or mechanical power inside the facility, reducing the costs of production. The efficiency of the co-generation systems varies according the composition of the biogas and the equipment used to the conversion, being possible reach 38%, that is equivalent to 2,0 to 2,5kWh by m3 of biogas. This work has as objective evaluate the feasibility of the production of electrical power from the biogas generated by residues of the milk bovine culture, using an engine of internal combustion converted to biogas and linked to an electrical generator.
Keywords : Biogás; energia elétrica; bovinocultura.