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  • Kapalı Erişim
    Yayın
    Hydropower technologies
    (Elsevier, 2025) Waheed, Pakeeza; Tanveer, Izma; Yaqoob, Haseeb; Zulqarnain; Erten, Begüm; Sher, Farooq; Teoh, Yew Heng
    The world is rapidly shifting to renewable energy resources due to the harmful impacts of fossil fuels. Hydropower energy is one of the world's earliest and major contributors to renewable energy generation. Hydro energy is the main pillar of sustainable energy production, utilizing the motion of water to produce electricity. This chapter “hydropower technologies” provides a comprehensive overview of the evolution, different types of hydropower systems, their significance, construction, plant design, and technological advancements in hydropower. It begins with historical insights, tracing hydropower use back to Mesopotamia, Greece, and Rome, highlighting its development over centuries. The chapter emphasizes hydropower's pivotal role in sustainable energy solutions, noting its high energy conversion efficiency of over 90% and minimal environmental impact compared to other renewable energy sources. It discusses the types of hydropower systems, including run-of-river, reservoir systems, and pumped storage hydropower. It gives details of their functionalities, efficiencies, hydropower simulations, methods to improve efficiency and environmental considerations. The life cycle assessment through different literature shows the greenhouse gas emission of 3–6,647 g COeq./kWh. Moreover, hydropower systems are researched using integrated advanced technologies with higher efficiencies than conventional methods. These technologies include computational fluid dynamics modelling, IoT, supervisory control and data acquisition, artificial neural networks, monitoring, control, and instrumentation in hydropower systems. It further explores the integration of hydropower with other renewable sources and the technological advancements in turbine design, control systems, and maintenance practices to enhance operational efficiency and minimize ecological impacts. Future research can explore areas such as smart grids, environmental assessment, and government policies.
  • Küçük Resim
    Yayın
    Tribological behaviour and lubricating mechanism of tire pyrolysis oil
    (MDPI, 2021) Yaqoob, Haseeb; Teoh, Yew Heng; Sher, Farooq; Jamil, Muhammad Ahmad; Nuhanovic, Mirza; Razmkhah, Omid; Erten, Begüm
    The four-ball tester was used in this analysis to demonstrate the lubricity of tire pyrolysis oil (TPO). The tribological performance of the tire pyrolysis oil was compared with diesel fuel (DF) and their blends, DT10 (TPO 10%, Diesel 90%) and DT20 (TPO 20%, Diesel 80%). A scanning electron microscope (SEM) was used to investigate the wear scar. In contrast to diesel fuel, TPO demonstrated better antiwear behaviour in terms of higher load-carrying capacity. DT10, DT20, and TPO's wear scar diameter (WSD) was 22.35%, 16.01%, and 31.99% smaller than that of diesel at 80 kg load, respectively. The scanning electron microscope micrographs showed that the TPO and DT10 had less wear than their counterparts.