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Modular Hydro Energy Systems
Published in Yatish T. Shah, Modular Systems for Energy and Fuel Recovery and Conversion, 2019
Most sea-based technologies generating energy are hampered by several factors such as design-based weakness and/or construction-based shortcomings. As a result, many of the WECs and these generators have been very expensive to manufacture and maintain. Some WECs eliminate these problems by keeping most of the costly electrical components onshore where they are protected from the vast marine environment and can be easily serviced. This technique is an alternative to that with grid connection by undersea cabling [7]. As another measure for improving continuous power supply, certain types of the WECs can also supply energy by pumping seawater into a coastal reservoir at a suitable height above the calm water level, running through a channel into a hydropower turbine for solving the general problem of fluctuating output in wave energy [7].
Appraisal of Thanneermukkom bund as a coastal reservoir in Kuttanad, Kerala
Published in Journal of Applied Water Engineering and Research, 2021
Sreevalsa Kolathayar, U. S. Amala Krishnan, T. G. Sitharam
The coastal reservoir is a unique structure constructed at an estuary (the point where a river meets a sea) to store the excess water at flood times (Yang et al. 2013; Yang 2018; Sitharam et al. 2020). This wall or dike structure may run for kilometres together in the coastline. The different coastal reservoirs around the world are, Afsluitdijk in Netherland, Marina barrage in Singapore, Saemanguem in South Korea, Qingcaosha in China, Shek Pik and Plover Cove in Hong Kong, and Cardiff bay in the United Kingdom, etc. (Kolathayar et al. 2019). They serve different functions like – fresh water supply, flood control, tidal energy generation, land reclamation, irrigation, coastal area development, etc. Pluit Reservoir Revitalization Project in Jakarta Indonesia and Kalpasar project in Gulf of Khambhat, India, is under planning stage. Kolathayar et al. (2017) and Parthasarathy et al. (2019) conducted a feasibility study of a possible coastal reservoir in the coast of the Arabian sea near Mangaluru impounding freshwater from Netravati River. Sitharam et al. (2017), Sitharam et al. (2018) and Krishnan and Kolathayar (2020) proposed and discussed freshwater reservoir in Ashtamudi Lake of Kerala which is the second largest lake in the state, after Vembanad Lake.
Geotechnical considerations for the concept of coastal reservoir at Mangaluru to impound the flood waters of Netravati River
Published in Marine Georesources & Geotechnology, 2019
C. R. Parthasarathy, T. G. Sitharam, S. Kolathayar
The coastal fresh water reservoir is a new emerging concept of storing flood water in the sea close to shoreline. Coastal reservoir can be constructed in shallow waters at appropriate locations close to the mouth of river along with a barrage at one or two ends. Sea walls or breakwaters with some modifications along with new and sustainable construction technologies are good enough to construct the sea-based reservoirs/coastal reservoirs. Bangalore Water Supply and Sewage Board approved a feasibility study to be undertaken on the Coastal Reservoir Concept to Impound Netravali River Flood Waters: A Sustainable strategy for water, by a team of experts and scientists from various organizations like IISc, NITK, AMRITA, CIFT, SGES, Neel Water, IAHV of Art of Living, and CETCO. The feasibility of coastal reservoir at Mangaluru was established by Kolathayar et al. (2017) based on excess run off estimation of Netravati River which amounts to 385 TMC ft every year. This paper presents the geotechnical consideration on the feasibility of proposed coastal reservoir to impound the flood waters of Netravati by constructing a dike in the Arabian Sea. Murthy (1977) presented the evolution of Netravati drainage in the state of Karnataka. The location of Netravati River basin is shown in Figure 1.