Results 21 to 30 of about 47,018 (262)

A Numerical Simulation of an Experimental Melting Process of a Phase-Change Material without Convective Flows

open access: yesApplied Sciences, 2022
The melting process of lauric acid in a square container heated from the top surface was numerically studied from an experimental case. Knowledge of this process is of special interest for computationally efficient modeling systems, such as PCM-enhanced ...
Manuel García-Fuente   +2 more
doaj   +1 more source

Photovoltaic Prediction Software: Evaluation with Real Data from Northern Spain

open access: yesApplied Sciences, 2021
Prediction of energy production is crucial for the design and installation of PV plants. In this study, five free and commercial software tools to predict photovoltaic energy production are evaluated: RETScreen, Solar Advisor Model (SAM), PVGIS, PVSyst ...
David González-Peña   +4 more
doaj   +1 more source

Research on multi-market strategies for virtual power plants with hydrogen energy storage

open access: yesFrontiers in Energy Research, 2023
As the main body of resource aggregation, Virtual Power Plant (VPP) not only needs to participate in the external energy market but also needs to optimize the management of internal resources.
Wenyu Zhang   +6 more
doaj   +1 more source

Evaluation of the Vertical Sky Component without Obstructions for Daylighting in Burgos, Spain

open access: yesApplied Sciences, 2020
Daylight availability knowledge is the first step for an energetic and visually efficient building and city design. It can be estimated with the Vertical Sky Component (VSC), which is defined as the ratio of the vertical diffuse illuminance over the ...
Diego Granados-López   +4 more
doaj   +1 more source

Control Method for Improving Voltage Response and Ripple of Isolated DC-DC Converter

open access: yesFrontiers in Energy Research, 2022
Affected by the abrupt changes of load and unregulated first-stage rectifiers, it is difficult for the output voltage of the isolated DC-DC converter with traditional proportional-integral (PI) control to meet the needs of industrial applications such as
Ming Li   +7 more
doaj   +1 more source

The Solar Wind Energy Flux [PDF]

open access: yesSolar Physics, 2012
The solar-wind energy flux measured near the ecliptic is known to be independent of the solar-wind speed. Using plasma data from Helios, Ulysses, and Wind covering a large range of latitudes and time, we show that the solar-wind energy flux is independent of the solar-wind speed and latitude within 10%, and that this quantity varies weakly over the ...
Le Chat, G.   +2 more
openaire   +7 more sources

Daily data of Global Vertical Insolation in the four cardinal orientations in Burgos, Spain

open access: yesData in Brief, 2018
Daily data of Global, Diffuse and Beam Horizontal Insolation and Global Vertical (North, South, East and West orientations) insolation recorded in Burgos, Spain, are presented in this paper.
M. Diez-Mediavilla   +4 more
doaj   +1 more source

Photosynthetic Active Radiation, Solar Irradiance and the CIE Standard Sky Classification

open access: yesApplied Sciences, 2020
Plant growth is directly related to levels of photosynthetic photon flux density, Qp. The improvement of plant-growth models therefore requires accurate estimations of the Qp parameter that is often indirectly calculated on the basis of its relationship ...
Ana García-Rodríguez   +3 more
doaj   +1 more source

Creating Cloud Segmentation Data Set Using Sky Images of Afyonkarahisar Region [PDF]

open access: yesE3S Web of Conferences
The use of sky images in solar radiation intensity estimation has been one of the most studied topics in the literature since it improves the estimation results.
Eşlik Ardan Hüseyin   +2 more
doaj   +1 more source

A Low-Cost Luxometer Benchmark for Solar Illuminance Measurement System Based on the Internet of Things

open access: yesSensors, 2022
Natural illumination has an important place in home automation applications. Among other advantages, it contributes to better visual health, energy savings, and lower CO2 emissions.
Omar Guillán Lorenzo   +4 more
doaj   +1 more source

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