Results 31 to 40 of about 636,970 (307)

Mechanism Analysis of PCC Harmonic Resonance Based on Nonlinear Self-Oscillation Concept in a High-Power Grid-Tied Photovoltaic Plant

open access: yesApplied Sciences, 2018
With the high penetration of photovoltaic systems, the interaction between grid-tied inverters and line impedances results in harmonic resonance at point of common coupling (PCC) in high-power photovoltaic (PV) plants.
Yong Zhao   +3 more
doaj   +1 more source

Modelling the Steady-State Performance of Coiled Falling-Film Drain Water Heat Recovery Systems Using Rated Data

open access: yesResources, 2020
Falling-film drain water heat recovery (DWHR) systems are heat exchangers used to recover energy from warm water travelling down vertical drainpipes. DWHR systems are rated at constant inlet temperatures at multiple flow rates while maintaining an equal ...
Ramin Manouchehri, Michael R. Collins
doaj   +1 more source

Preparation and interfacial evaporation properties of 3D photothermal absorber

open access: yesGongye shui chuli
Environmental pollution and climate change have caused freshwater scarcity and there is an urgent need for green freshwater preparation technologies. Solar-driven water evaporation, as a low-carbon, environmentally friendly, and efficient desalination ...
HUAN Xi   +7 more
doaj   +1 more source

Influences of Optical Factors on the Performance of the Solar Furnace

open access: yesEnergies, 2019
In this paper, an optical structure design for a solar furnace is described. Based on this configuration, Monte Carlo ray tracing simulations are carried out to analyze the influences of four optical factors on the concentrated solar heat flux ...
Zhiying Cui   +3 more
doaj   +1 more source

Can PV or solar thermal systems be cost effective ways of reducing CO 2 emissions for residential buildings? [PDF]

open access: yes, 2006
This paper compares two solar systems, an actual building integrated, photovoltaic roof (BIPV) and a notional solar thermal system for a residential block in London, UK.
Croxford, B, Scott, K
core  

Advancements in hybrid photovoltaic-thermal systems: performance evaluations and applications [PDF]

open access: yes, 2016
Due to European Directives (2010/31/UE on buildings energy performance, 2009/28/CE on the use of renewable energy, 2012/27/UE on the energy efficiency) the electric and thermal energy needs of new and retrofitted buildings are faced by increasing ...
Bagarella, Giacomo   +2 more
core   +1 more source

Cathodic Cage Plasma Deposition of Nanostructured Cu–Fe–Se Coatings on Poly(methyl Methacrylate)

open access: yesAdvanced Engineering Materials, EarlyView.
Nanostructured Cu–Fe–Se coatings are deposited on PMMA by a modified cathodic cage plasma process, enabling low‐temperature deposition on polymer substrates. A transition from discontinuous to compact morphology is observed with temperature, with optimal properties at 200°C, where improved CuFeSe2‐type bonding, lowest sheet resistance, and favorable ...
V. S. S. Sobrinho   +8 more
wiley   +1 more source

Overview of predictive CSP spread prospects and its opportunities

open access: yesJournal of Energy in Southern Africa, 2016
An investigation was carried out to illustrate the prospects and challenges associated with implementation of concentrating solar power (CSP) with storage technology in South Africa.
Kai Timon Busse, Frank Dinter
doaj   +1 more source

South African shale gas economics: Analysis of the breakeven shale gas price required to develop the industry

open access: yesJournal of Energy in Southern Africa, 2021
Is Karoo shale gas an economically viable option for providing the gas needed for the South African power grid? Dispatchable power generation is essential for the implementation of a renewable based electric grid system. Natural gas-fuelled generation is
S. Clark   +3 more
doaj   +1 more source

Solar-thermal and hybrid photovoltaic-thermal systems for renewable heating [PDF]

open access: yes, 2017
Grantham Briefing Papers analyse climate change and environmental research linked to work at Imperial College London, setting it in the context of national and international policy and the future research agenda.
Alonso-Alvarez, Diego   +5 more
core   +1 more source

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