Utilização do método PDCA para desenvolvimento de um plano de ação visando a redução do consumo de combustível de uma caldeira a cavaco

Abstract

The purpose of this project was to run the Plan phase of the PDCA, cycle in order to develop an action plan to reduce fuel demand in a mixed wood-fired boiler. For this, the thermal efficiency of the boiler was evaluated using the direct and indirect methods, using the operational parameters raised from the boiler under study, in order to improve its efficiency, reducing thermal losses and consequently saving fuel. The steam generator, which operates at an average pressure of 12 bar and with a mean mass flow rate of 13,000 kg per hour, is located in the city of Paranaguá - PR. The results show that the efficiency of the boiler is considered good, about 77% by the indirect method and 82% by the direct method. The study shows that the increase in fuel consumption is due to the high humidity of the wood chip used in the steam generator. As a result, a 20-action action plan was developed to help improve boiler efficiency and reduce fuel consumption.