Desempenho comparativo entre compressores rotativos de parafuso com velocidade fixa e variável

Abstract

The use of compressed air in industries is indispensable, regardless of its size. One of the major problems occurring in the use of compressed air is a large variation in network load with various alternations of high and low pressure. The adoption of a VSD compressor technology in conjunction with other objective with fixed speed compressors to balance the pressures on the network, making it occurs most system efficiency by avoiding premature wear of components and significantly reducing maintenance costs and also of electricity. In this paper makes a comparative supply system with all fixed speed compressors with the system of fixed speed compressors combined with a variable speed compressor (VSD), from data collected by a system of management. Subsequently it is the economic analysis of investment to acquire a piece of equipment with variable speed through the methods of Payback and NPV (net present value). Were considered and compared two investment alternatives , the first considering replacing the old compressor as part payment of the VSD compressor and the other being as the VSD acquisition of equipment and the maintenance of old equipment for further reform and use as reserve.