ABSTRACT This study aimed to present a solution in glued laminated timber to replace frame structures built in reinforced concrete and metallic structure, which are common in agricultural buildings in western Paraná such as those destined to laying poultry house building by agricultural cooperatives. Structural behavior of frames build from Araucaria angustifolia glued boards and vegetable oil-based polyurethane adhesive was evaluated. Tests were carried out to characterize wood and adhesive to obtain verification/sizing parameters. Initially, a full-scale structural project was conducted to meet standard laying poultry house specifications. Afterwards, five units of straight three-articulated frames on a 1:2.5 reduced scale were designed, built, and subjected to strength tests until breaking. They were built with a 2-meter free span and a 15° slope, suitable for using metal roof tiles. The average for structure ultimate strength was 4.14 times the design load. Structures had satisfactory mechanical performance and displacements lower than those recommended by NBR 7190 (1997) standard (ABNT). Therefore, building glued frames with Parana pine boards and vegetable oil-based glue is technically feasible.

O foco deste trabalho consiste num estudo de caso referente a uma Auditoria Energética efetuada numa agroindústria de laticínios localizada na cidade de Guaíra, Extremo-Oeste paranaense. Neste contexto, o presente artigo teve por objetivos: efetuar uma auditoria energética de suas instalações, analisando o consumo de energia elétrica associado aos processos produtivos, sistemas e equipamentos existentes; identificar e quantificar as cargas instaladas na agroindústria, verificando a energia consumida e a potência demandada em cada uma delas; determinar o potencial de conservação de energia para os usos finais existentes na empresa, por meio da identificação de oportunidades para implantação de medidas que otimizassem o uso da energia; e efetuar um estudo de viabilidade econômica que apontasse para a implementação das medidas de eficiência energética. Após a análise das demandas energéticas e dos equipamentos instalados na agroindústria, destaca-se a possibilidade do aumento na oferta de energia elétrica apenas reduzindo-se o desperdício no setor industrial. A análise econômica aponta um payback descontado de 30 meses e Taxa Interna de Retorno de 3,93% ao mês. Com a implantação das intervenções propostas, obtém-se uma redução de 11.490,50 kWh mês-1 (economia mensal de 7,26%).

The focus of this research is a case study concerning an Energy Auditing that was conducted in a dairy agribusiness located in the city of Guaira, in the extreme west of the state of Paraná. In this context, this research aimed to: perform an energy auditing of its facilities by analyzing the energy consumption associated with the processes, systems, and existing equipment, to identify and quantify the loads installed in agribusiness, energy consumed and checking the power demanded in each of them and determine the potential for energy conservation for the existing final uses at the company, by identifying opportunities to implement measures thus optimizing the use of energy, and perform an economic feasibility study that aims to implement the energy efficiency measures. After analyzing the energy demands and the equipment installed in the agribusiness, it is highlighted the possibilities of increasing the supply of electricity only reducing waste in the manufacturing sector. The economic analysis indicates a payback of 30 months and Internal Rate of Return of 3.93% per month. With the implementation of the proposed interventions, it is obtained a reduction of 11,490.50 kWh month-1 (monthly savings of 7.26%).