Results 81 to 90 of about 5,144 (222)

Study of a novel hydro turbine with ultra-small unit discharge in theoretical calculation and numerical simulation

Advances in Mechanical Engineering, 2023
A novel hydro turbine with the ultra-small unit discharge was suggested and studied for the first time. It was specially developed for hydraulic energy recovery with a smaller flow rate and medium available head, its highlight feature is straight blades ...
Yanpin Li, Anran Liu, Dexin Chen, Pangao Kou, Zichao Zhang, Lihong Zhang   +5 more
doaj   +1 more source

Flow Analysis Inside a Pelton Turbine Bucket [PDF]

Journal of Turbomachinery, 2006
The aim of this work is to provide a detailed experimental and numerical analysis of the flow in a fixed bucket of a Pelton turbine. The head, jet incidence, and flow rate have been varied to cover a wide range of the turbine functioning points. The experimental analysis provides measurements of pressure and torque as well as flow visualization.
Zoppé, Béatrice, Pellone, Christian, Maître, Thierry, Leroy, Pierre   +3 more
openaire   +2 more sources

Understanding the Fate of H2S Injected in Basalts by Means of Time‐Domain Induced Polarization Geophysical Logging

Journal of Geophysical Research: Solid Earth, Volume 129, Issue 6, June 2024.
Abstract To help meet emission standards, hydrogen sulfide (H2S) from geothermal production may be injected back into the subsurface, where basalt offers, in theory, the capacity to mineralize H2S into pyrite. Ensuring the viability of this pollution mitigation technology requires information on how much H2S is mineralized, at what rate and where.
L. Lévy, D. A. Ciraula, B. Legros, T. Martin, A. Weller   +4 more
wiley   +1 more source

Investigation on unstable flow characteristics and energy dissipation in Pelton turbine

Engineering Applications of Computational Fluid Mechanics
The internal flow scale of a Pelton turbine is variable, and the interaction between the jet and the bucket has strong transient characteristics, resulting in an incomplete understanding of its internal vortex structure evolution and energy dissipation ...
Wenrui Fan, Longgang Sun, Pengcheng Guo
doaj   +1 more source

Flow control of agricultural spraying machines : a thesis in partial fulfilment of the requirements for the degree of Master of Engineering in Mechatronics, Massey University, Palmerston North, New Zealand [PDF]

, 2016
New Zealand relies heavily on its agricultural industry. A large portion of this industry is pastoral farming, where livestock are raised to graze on pasture. This includes beef, sheep and dairy farming.
Hall, Tobin
core  

Theoretical and experimental analysis of dynamic processes of pipe branch for supply water to the Pelton turbine [PDF]

, 2012
The paper presents the results of the analysis of pipe branch A6 to feed the Hydropower Plant ”Perućica” with integrated action Pelton turbines. The analysis was conducted experimentally (tensometric) and numerically.
Jovanović Miomir Lj., Milanović Saša M., Milenković Dragica R., Milić Predrag Đ., Petrović Goran S.   +4 more
core   +1 more source

Importance of Variable Turbine Efficiency in Run‐Of‐River Hydropower Design Under Deep Uncertainty

Water Resources Research, Volume 60, Issue 6, June 2024.
Abstract When less water is available, hydropower turbines are less efficient, or have to stop altogether. This reality is often neglected in recent work on the planning and operations of hydropower systems, despite widespread expected increases in drought intensity, frequency and duration.
Veysel Yildiz, Solomon Brown, Charles Rougé   +2 more
wiley   +1 more source

Improving the surface properties of a Pelton turbine bucket via centrifugal casting technique

Advances in Mechanical Engineering, 2017
This study examines the possibility of fabricating a complex, non-cylindrical, Pelton turbine bucket by centrifugal casting technique. Oil hardening non-shrinking die steel material was selected for the permanent mould production, machined with computer ...
Williams S Ebhota, Akhil S Karun, Freddie L Inambao   +2 more
doaj   +1 more source

Theoretical framework to surpass the Betz limit using unsteady fluid mechanics [PDF]

, 2019
The Betz limit expresses the maximum proportion of the kinetic energy flux incident on an energy conversion device that can be extracted from an unbounded flow.
Dabiri, John O.
core   +1 more source

Membrane Technology for Energy Saving: Principles, Techniques, Applications, Challenges, and Prospects

Advanced Energy and Sustainability Research, Volume 5, Issue 5, May 2024.
This review highlights membrane technology's vital role in promoting environmental sustainability through effective desalination, gas purification, and waste recycling. It explores advancements toward green synthetic and nanocomposite membranes, detailing their mechanisms, advantages, and challenges.
Ahmed I. Osman, Zhonghao Chen, Ahmed M. Elgarahy, Mohamed Farghali, Israa M. A. Mohamed, A.K. Priya, Hamada B. Hawash, Pow‐Seng Yap   +7 more
wiley   +1 more source