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Volume 12, Issue 23 (9-2016)
Marine Engineering 2016, 12(23): 37-44 |
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Kamali Monfared R, Ahmadi Asl H, Rad M. Designing and Building of a Shroud to Increase Fluid Velocity with Capability to Use for Axial Water Turbines. Marine Engineering 2016; 12 (23) :37-44
URL: http://marine-eng.ir/article-1-456-en.html
URL: http://marine-eng.ir/article-1-456-en.html
1- Dept. of Mechanical Eng., South Tehran Branch, Islamic Azad University
Abstract: (4611 Views)
Existence of the coasts in the north and south of Iran cause to create potential areas to produce electricity by tidal and wave energies. Therefore, increase of fluid velocity is required to exploit these areas. A new generation of turbines is created by designing and building a shroud to increase fluid velocity which it increases kinetic energy of flow and generates more electricity at coastlines and riverbeds.
Based on airfoils characteristics, a shroud with an airfoil cross-section form was designed which increases water velocity approximately 2.8 times greater than far field flow numerically. The shroud was built and tested experimentally. Moreover, several propellers were installed in the shroud. Rotational speeds of the propellers in two states of with and without shroud were compared and they were proportional to increase ratio of flow velocity. Consequently, more power is generated by installing a turbine in the shroud.
References
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