ANÁLISE DA VIABILIDADE DE SISTEMA HÍBRIDO BIOGÁS-SOLAR NA GERAÇÃO DE ENERGIA E SEUS IMPACTOS NAS EMISSÕES DE GASES

Abstract

The development of swine production evidenced the need for greater attention to the problem of treatment and destination of swine manure. Nowadays, with the population increase, the increasing use of industrial and agricultural machines, as well as poultry and pork farms for meat production has generated an increase in the demand for energy in agribusiness, especially of fossil or non-renewable fuels. Due to this growth, some socio-environmental problems arise, as most sources used for fuel and electricity generation are of fossil origin (oil, coal, natural gas, diesel), and the burning of these fuels releases several gases that are responsible for pollution. atmospheric. Many countries have invested in the production of clean and renewable energy. The present work aimed to evaluate the use of a grid-connected photovoltaic-biogas hybrid system in a rural property. Biogas is produced in a rural property located in the city of Rio Verde/GO, which uses five biodigesters for biogas production, which is converted into electricity by a 330 kVA or 210 kW motor generator. A comparative analysis of hybrid system costs after optimization was made using the Hybrid Optimization Model for Electric Renewables (HOMER) software. For an average amount of 12,000 animals housed, 772 m³.day-1 of biogas was produced, which was used to generate 1690 kWh.day-1 of electricity. The cost of producing electricity using solar biogas was 0.077 US$.kWh-1, on the other hand, the amount of energy paid at the utility was 0.12 US$.kWh-1, showing feasibility. It has also been found that selling carbon credits and mitigating greenhouse gases from energy biogas production make these technologies more competitive and viable, especially through the Clean Development Mechanism. In the short term, the implementation of the solar biogas hybrid system in the region is an interesting alternative for farmers, considering the sustainability of agribusiness.