Influence of Working Gas and Oil Injection Rate on Efficiency of Oil Injected Twin Screw Air Compressor

Abstract

Oil injected twin-screw compressors are widely used for medium pressure applications in many industries. Low cost air compressors can be adopted for compression of helium and other gases, leading to significant cost saving. To generate machine independent experimental data, two similar compressors with different capacities have been built to asses the performance of air compressor when applied to compress nitrogen, argon and helium gases apart from air. Also this paper addresses the effect of oil injection quantity and its temperature on volumetric and power efficiency.