Title: Optimization of Output Parameters of The Horizontal Tidal Turbine by Modifying Its Meridional Section
Abstract: The velocity of tidal current at the location of Haya Strait shows that the velocity of ocean currents could reach 2.54 m/s with the available power density of Pd = (0 -3670) x10-3 kW/m <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> . To utilise the available energy, then a prototype of bulb propeller tidal turbine in the form of Venturi canal was designed and tested using a raft platform. The dimensions of the turbine; inlet diameter D0 = 4 meter and impeller diameter D1 = 1.5 meter and outlet diameter = 2.60 meter. At the speed stated above, hydraulic force obtained reached 324 kW. Optimization of turbine output parameters is carried out through structural modification and cross-view geometrical modification. Turbine meridian cross view section is modified to be streamlined. In this case, cross view modification by adapting ducted-turbine that is carried out without changing the inlet dimension. Flow velocity was measured at three turbine sections, namely at the inlet section, the impeller housing section and the outlet section. Rate of meridian flow is measured at three meridian positions, which are Vo at the inlet, V1 at the impeller and V2 at the outlet. Output parameters are calculated based on the water velocity and the data measured at the three corresponding sections. The maximum power coefficient was found to be 0.593 that occurs at the induction factor value of a = 0.346 and the maximum thrust coefficient of CT = 1 was found at the induction factor value of a = 1. The hydraulic power is changed from 0.00 ÷ 226 kW to 0 ÷ 324 kW, or an increase of 43%. The turbine brake power is changed within the range of 0.00 ÷ 194 kW to 0 ÷ 221 kW that is equivalent to 14% of power increase.
Publication Year: 2018
Publication Date: 2018-12-01
Language: en
Type: article
Indexed In: ['crossref']
Access and Citation
Cited By Count: 2
AI Researcher Chatbot
Get quick answers to your questions about the article from our AI researcher chatbot