The main limitation of Savonius hydrokinetic turbine is its low efficiency due to negative torque developed by the returning blade without augmentation techniques. Savonius rotor is one of the simple and low-cost vertical axis drag type devices used for the extraction of hydrokinetic power. Hydrokinetic technologies harvest renewable power by harnessing the kinetic energy of water from free-flowing rivers, streams, dam head/tailrace and irrigation channels. This development should lead to an interesting research on optimizing the mixture of Savonius and Darrieus turbine for a localized low wind speed conditions in the future. With the low self-start speed in the MVAWT, it will enable the wind energy capture for a longer period of time at a low wind condition site. However, the lower self-start were also being compensated by lower turbine rotational speed. It was observed that all the positive pitch angle MVAWTs has started to rotate at lower wind speed (about 1.8 m/s) while the standalone Darrieus turbine was only started to rotate at wind speeds more than 3.0 m/s. Experiments conducted on 5 MVAWT’s configurations and being compared to a standalone Darrieus turbine with +3 degree pitch angle, showed promising result in lowering the self-start speed of the Darrieus turbine. The mixed wind turbine model (MVAWT) was fabricated and tested in our lab as prove of concept. This paper presents a mixed design for Vertical Axis Wind Turbine comprises of Savonius and Darrieus rotors, being assembled together as a single rotor turbine. As for the case of wind energy, a wind turbine that can operate at low wind condition are desirable. Small-scaled renewable energy generation such as micro-hydro and domestic solar panel has become the recent trend of research in order to achieve sustainable energy generation and to eliminate the reliance of geographical selection and large farm area. This includes the quality of OSH self-manufactured products, the particular motivations of adopters to engage with OSH, the availability of adequate production inputs for local manufacturing, and the resources available through open-source communities. We find that the adoption of available open-source wind turbine designs by technology users depends on a number of factors that are currently underemphasized in discussions on the potential of OSH. Through a systematic review of the case-specific literature, we identify and analyse 60 documents, including case studies, construction manuals, market analyses, and technical assessments. Given our limited understanding of this topic, we present an in-depth study of small wind turbines based on open designs. In this paper, we focus on the limited uptake of OSH and study factors that help explain its adoption by users who replicate available open-source designs. While some expect such open-source hardware (OSH) to lead to transformational changes in the ways technologies are produced, the available empirical evidence suggests that, to date, the diffusion of most OSH applications has been modest. The successes of open-source software raise the question of whether technological hardware that has been developed based on an open and collaborative mode of innovation can achieve similar levels of diffusion.
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