Design and Economic Analysis of a Hydrokinetic Turbine for Household Applications
Social and political concerns on climate change have made renewable energy an essential component of government's work-plans for the near future. Grid-connected horizontal-axis hydrokinetic turbines are promising eco-friendly power sources for electrical energy supply to households near middle-to-high discharge rivers, while providing an opportunity to sell the energy surplus. In this work, a rotor design analysis of a hydrokinetic turbine with a nominal radius of 1 m and application in rivers is performed based on blade element momentum theory. Then, an economic analysis is presented in terms of the discounted payback period and the internal rate of return. The numerical results show that three-bladed hydrokinetic turbines with a nominal tip speed ratio around 5 and state-of-the art high lift-to-drag ratio hydrofoils $(\sim100)$ lead to maximum performance, with a power coefficient around 0.45. Performance could be further improved in an affordable manner using diffuser-augmented hydrokinetic turbines. The economic analysis shows that this type of hydrokinetic installation can be profitable in leading economic countries, with a discounted payback period of 4-6 years. In energy developing countries, this technological solution can be cost effective accompanied by economic subsides and implementation of a local industry, resulting in similar payback periods
Year of publication: |
[2022]
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Authors: | Puertas-Frías, Carmen ; Wilson, Clinton S. ; García-Salaberri, Pablo A. |
Publisher: |
[S.l.] : SSRN |
Subject: | Privater Haushalt | Household |
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