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impellers
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Conceptual Design of a Turboexpander Impeller
, M.Sc. Thesis Sharif University of Technology ; Ghorbanian, Kaveh (Supervisor)
Abstract
Turboexpanders are gaining on interest in power generation as an alternative to Joule Thomson valves. The focus of this thesis is on the conceptual design of the impeller in a turboexpander. First, a one-dimensional design and analysis code is developed by employing the approach given by Aungier. The results are compared with some numerical as well as experimental data. Then, the blade aerofoil profile is generated by incorporating Hasselgruber’s methodology. The results are simulated by utilizing Bladegen and Turbogrid software. An analysis is performed in the CFX environment. The aero-thermodynamic results of the designed impeller of interest are compared with experimental data. An overall...
The Study of Flow with Suspended Solid Particles through a Centrifugal Fan to Avoid Asymmetric Erosion of the Impeller and its Redesign to Improve its Endurance
, M.Sc. Thesis Sharif University of Technology ; Darbandi, Masoud (Supervisor)
Abstract
Industrial centrifuge fans operate in various industries, specifically heavy industries such as pelletizing plants, steel mills, and cement plants. These fans transfer process gas in the production cycle. In some cases, due to their off-design working conditions, asymmetrical wear and failure happen on one side of the impeller's blades more than the other side. The most important reason is the heterogeneity of the entrance fluid's properties. One of the many critical parameters in this issue is the asymmetric distribution of particles between the two entrances of the fan. This research investigates the asymmetric erosion problem of a specific centrifugal fan with a double-suction side...