Results 11 to 20 of about 82,459 (305)
Research and Design of Cross Flow Water Turbines for Small HPP [PDF]
E3S Web of Conferences, 2021 This paper presents the experience of the Hydroaerodynamics and hydraulic machinery department of the Technical university of Sofia (Bulgaria) in the research and design of cross flow water turbines.
Obretenov Valentin, Tsalov Tsvetan
doaj +1 more source
Programmable microfluidics for dynamic multiband camouflage
Microsystems & Nanoengineering, 2023 Achieving multiband camouflage covering both visible and infrared regions is challenging due to the broad bandwidth and differentiated regulation demand in diverse regions.
Chunzao Feng +6 more
doaj +1 more source
A Study of a Darrieus Vertical Axis Wind Turbine with a guiding nozzle [PDF]
E3S Web of Conferences, 2020 This paper presents the results from an experimental study of a Vertical Axis Wind turbine model with a guiding nozzle. The geometry of the nozzle is synthesized by an original methodology.
Obretenov Valentin, Tliev Rossen
doaj +1 more source
Broadband light management in hydrogel glass for energy efficient windows
Frontiers of Optoelectronics, 2022 Windows are critically important components in building envelopes that have a significant effect on the integral energy budget. For energy saving, here we propose a novel design of hydrogel-glass which consists of a layer of hydrogel and a layer of ...
Jia Fu +5 more
doaj +1 more source
Interaction between two horizontal axis tidal turbines in model scale – experiment and simulation
International Marine Energy Journal, 2022 Up to 6 Schottel Instream Turbines (SIT250) can be mounted on the tidal platform PLAT-I developed by Sustainable Marine Energy. Due to the close proximity of the turbines interactions can occur between them.
Simon Joßberger +4 more
doaj +1 more source
Energies, 2020 Flow separation and different kinds of stall flows occur under low load conditions for steam turbine last stage blades. In order to delay the flow separation and increase turbine power production, we applied suction side tubercles on steam turbine low ...
Jing Zhang +5 more
doaj +1 more source
Monitoring Pumping Units by Convolutional Neural Networks for Operating Point Estimations
Energies, 2023 To avoid the failure of pumping units, the monitoring of operating points with a subsequent assessment of the condition of the pump may support the decision for required maintenance.
Hanbing Ma +2 more
doaj +1 more source
Water and carbon footprints for Vidraru hydropower development, Romania [PDF]
E3S Web of ConferencesAlthough the important positive effects that lakes have ondevelopment at the regional level and beyond, they also have a negativeimpact related to the large amounts of water that they can consume byevaporation.
Dumitran Gabriela-Elena +5 more
doaj +1 more source
International Journal of Turbomachinery, Propulsion and Power, 2023 The head and flow rate of a pump characterize the pump performance, which help determine whether maintenance is needed. In the proposed method, instead of a traditional flowmeter and manometer, the operating points are identified using data collected ...
Hanbing Ma +2 more
doaj +1 more source
Reducing environmental pollution caused by construction plant [PDF]
, 2001 Quantifiable data produced in a national report by the Environment Agency of England and Wales entitled ‘Water pollution incidents in England and Wales 1997’ and published by the Stationery Office in 1998, identifies that of over 3,723 substantiated ...
Jackson, F, Morledge, R
core +1 more source