Results 21 to 30 of about 2,476,014 (304)

INTEGRATION OF VARIABLE ENERGY SOURCES IN ENERGY SYSTEMS

open access: yesJournal of Engineering Science, 2022
The main global concern in the energy sector is the substitution of fossil fuels and the mitigation of climate change – the transition to the carbon neutrality of the economy. For the power sector, the main solution for this transition is to use hydro, wind and solar energy sources, which have a high energy potential, including in the Republic of ...
Corina Gutu-Chetrusca, Dumitru Braga
openaire   +2 more sources

A regenerative supercritical-subcritical dual-loop organic Rankine cycle system for energy recovery from the waste heat of internal combustion engines [PDF]

open access: yes, 2017
Organic Rankine cycle (ORC) system is considered as a promising technology for energy recovery from the waste heat rejected by internal combustion (IC) engines.
Wang, Enhua   +3 more
core   +1 more source

Comparison Between Random Forest and Recurrent Neural Network for Photovoltaic Power Forecasting

open access: yes대한환경공학회지, 2021
Objectives : Photovoltaic power generation which significantly depends on meteorological conditions is intermittent and unstable. Therefore, accurate forecasting of photovoltaic power generation is a challenging task.
Ramek Kim, Kyungmin Kim, Johng-Hwa Ahn
doaj   +1 more source

Substrate integrated waveguide textile antennas as energy harvesting platforms [PDF]

open access: yes, 2015
Textile multi-antenna systems are key components of smart fabric and interactive textile (SFIT) systems, as they establish reliable and energy-efficient wireless body-centric communication links.
Lemey, Sam, Rogier, Hendrik
core   +2 more sources

Mixture Optimization of Sustainable Concrete with Silica Fume Considering CO2 Emissions and Cost

open access: yesBuildings, 2022
This research presents a framework for the mixture design of sustainable SF-modified concrete. The design strength at 28 days was scaled to different values (e.g., 30, 40, 50, and 60 MPa).
Yi-Sheng Wang   +2 more
doaj   +1 more source

Design of a Solar Greenhouse with energy Delivery by the Conversion of Near Infrared Radiation. Part 1. Optics and PV-Cells [PDF]

open access: yes, 2009
In this paper the design and development of a new type of greenhouse with an integrated filter for reflecting near infrared radiation (NIR) and a solar energy delivery system is described.
Bot, G.P.A.   +2 more
core   +3 more sources

Feasibility of a photovoltaic-thermoelectric generator: performance analysis and simulation results [PDF]

open access: yes, 2015
This paper describes a theoretical approach to evaluate the performance of a hybrid solar system made with photovoltaic cells and thermoelectric (TE) modules.
Attivissimo, Filippo   +3 more
core   +2 more sources

SaferCross: Enhancing Pedestrian Safety Using Embedded Sensors of Smartphone [PDF]

open access: yes, 2020
The number of pedestrian accidents continues to keep climbing. Distraction from smartphone is one of the biggest causes for pedestrian fatalities. In this paper, we develop SaferCross, a mobile system based on the embedded sensors of smartphone to ...
Eun, Yongsoon   +3 more
core   +2 more sources

Optimizing dual energy cone beam CT protocols for preclinical imaging and radiation research [PDF]

open access: yes, 2017
Objective: The aim of this work was to investigate whether quantitative dual-energy CT (DECT) imaging is feasible for small animal irradiators with an integrated cone-beam CT (CBCT) system.
Almeida, Isabel P   +7 more
core   +1 more source

Multi-characterizations of the hydration, microstructure, and mechanical properties of a biochar–limestone calcined clay cement (LC3) mixture

open access: yesJournal of Materials Research and Technology, 2023
Biochar is a green material derived from agricultural waste and other biomasses via thermochemical conversion under anaerobic conditions. Improving the utilization of biochar can reduce agricultural waste and carbon emissions.
Yi-Sheng Wang, Xiao-Yong Wang
doaj   +1 more source

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