Effect of Nozzle Design on the Stability and Performance of Self-Rotating Centrifugal Oil Filter

In the shadow of the oil prices, there is a need to focus on efficient and economical oil cleaning solutions. In this research study, experimental tests are carried out to evaluate the effect of nozzle position on the performance of a self-rotating centrifugal oil filter (SCOF). The nozzle size, location, and process parameters were designed for determining the rotating speed, stability, and performance of SCOF. The performance, quality, and cost were considered as the most influential parameters in the design of SCOF. Three nozzles were mounted at the top of the rotor with center distances of 33 mm, 46.5 mm, and 58.5 mm. As it is pressure-driven, it does not require any electric motor or prime mover, which conserves resources, saves cost, and helps to preserve the environment. The optimized SCOF was characterized for different oil samples for viscosity, filtration efficiency, and total base number (TBN). It was observed that the higher speed of the rotor induces a high centrifugal force which, when overcomes the viscous force of oil it cleans less than 6 µm particles. The filtration efficiency, viscosity, TBN, and stability were significantly enhanced by changes in nozzle design and process parameters in the system.