Results 101 to 110 of about 1,253,627 (291)

Limitations of Using DAQ Cards for Absolute Vibration Measurement in Hydraulic Machines

Applied Sciences
Vibration measurements are a frequently used tool in technical issues. They are widely used in operation and for testing irregularities in the operation of machines and devices, including hydraulic machines (turbines, pumps, and pump turbines).
Waldemar Janicki
doaj   +1 more source

Development of a 1-D Performance Prediction Model for Pumps as Turbines

Proceedings, 2018
Pumps as turbines (PaTs) are becoming more and more attractive in Small Hydropower. PaTs are considered a cost-effective alternative to conventional turbines as long as their turbine characteristic curves can be predicted. Indeed, manufacturers need of a
Michele Stefanizzi, Tommaso Capurso, Marco Torresi, Giuseppe Pascazio, Sergio Ranaldo, Sergio M. Camporeale, Bernardo Fortunato, Rosario Monteriso   +7 more
doaj   +1 more source

Free Vibration of Hemp Fiber‐Reinforced Laminated Composite Curved Beams Using Generalized Differential Quadrature Method

Polymer Composites, EarlyView.
Schematic representation of hemp‐, glass‐, and carbon‐based laminated composite curved beams, including different stacking sequences and their vibration response. ABSTRACT In recent years, increasing environmental awareness has stimulated growing interest in natural fiber‐reinforced composites (NFRCs) due to their eco‐friendly composition ...
Aykut Çetin, Hasan Kurtaran
wiley   +1 more source

Thermodynamic analysis of a novel fossil-fuel–free energy storage system with a trans-critical carbon dioxide cycle and heat pump [PDF]

, 2020
This paper presents and analyzes a novel fossil-fuel–free trans-critical energy storage system that uses CO2 as the working fluid in a closed loop shuttled between two saline aquifers or caverns at different depths: one a low-pressure reservoir and the ...
Hao, Y, He, Q, Liu, W, Oldenburg, CM, Pan, L   +4 more
core   +1 more source

Integrating tunable LED‐induced plant responses with novel solar cell technologies for energy‐efficient agrivoltaic systems

PLANTS, PEOPLE, PLANET, EarlyView.
The increasing demand for sustainable food production requires innovative solutions that balance productivity, resource efficiency, and environmental impact. Vertical Farming Systems (VFSs) offer a promising approach; however, their high energy consumption remains challenging.
Alessio Dessì, Carlo Spampinato, Fabiano Sillo, Salvatore Valastro, Mauro Centritto, Cecilia Brunetti, Andrea Ghirardo, Jörg‐Peter Schnitzler, Alessandra Alberti, Gianna Reginato, Aurora Rizzo, Raffaella Balestrini   +11 more
wiley   +1 more source

A new method to identify and explain sources of precipitation modification, illustrated for the western Netherlands

Quarterly Journal of the Royal Meteorological Society, EarlyView.
This study develops a method to identify the source areas of precipitation events, as illustrated for the western part of the Netherlands. Radar‐based precipitation data are traced back to their source areas and machine‐learning techniques are used to identify hypothesized causes: urban heat, surface roughness, and air pollution. We find that urban and
Jelmer van der Graaff, Gert‐Jan Steeneveld   +1 more
wiley   +1 more source

Using a Statistical-Numerical Procedure for the Selection of Pumps running as Turbines to be applied in Water Pipelines: Study Cases

Journal of Sustainable Development of Energy, Water and Environment Systems, 2018
A combined method using statistical and numerical models has been developed by the authors for selecting a pump running as turbine to be applied in micro-hydro plants.
Silvio Barbarelli, Mario Amelio, Gaetano Florio   +2 more
doaj   +1 more source

AN EXPERIMENTAL STUDY OF THE COARSE DROPLETS FORMATION

Acta Polytechnica CTU Proceedings, 2018
The paper introduces the first results from a new steam/air wind tunnel built in order to study the coarse water droplets in steam turbines and their formation.
Ondřej Bartoš, Lucie Měšťanová
doaj   +1 more source

Advancing Sustainable Development Through Exports of Clean Energy Products From Emerging Asian Economies: A Poisson Pseudo Maximum Likelihood Estimation Approach

Sustainable Development, EarlyView.
ABSTRACT The promotion of clean energy is critical to achieving sustainable development. This study investigates the factors that affect the exports, trade potential, and revealed comparative advantage (RCA) of clean energy products (CEPs) in the emerging Asian economies (EAEs).
Arvind Goswami, Rajesh Kumar Jangir, Vijay Kumar Chattu   +2 more
wiley   +1 more source

Low Carbon Technology in the Distribution Network [PDF]

, 2020
Tato práce pojednává o obecné informace o obnovitelných zdrojích energie a typech elektráren. Tato práce se soutředila na výrobu sluneční energie, a to také v případové studii modelu malé nízkonapěťové rozvodné sítě s připojenými fotovoltaickými ...
Mykhaylo Pluhin
core