Showing papers in "Renewable Energy in 2015"

TL;DR: In this paper, the potential of lithium ion (Li-ion) batteries to be the major energy storage in off-grid renewable energy is presented, and the authors present the electric vehicle sector as the driving force of Li-ion batteries in renewable energies.

TL;DR: In this paper, the authors investigated the influence of storage size and efficiency on the pathway towards a 100% renewable energy source integration in a power supply system and found that up to 50% of the overall electricity demand can be met by an optimum combination of wind and solar resources without both curtailment and storage devices.

TL;DR: In this article, the authors developed a multi-criteria decision support framework for ranking renewable energy supply systems in Turkey, where the Interval Shannon's Entropy methodology was used to determine weight values of the criteria.

TL;DR: In this article, the authors propose a framework to analyze and quantify the integration costs of wind and solar generators in power systems, based on the marginal economic value of electricity, or market value.

TL;DR: In this paper, a lumped-parameter equivalent circuit model using three-diodes is presented for large area (∼154.8 cm 2 ) industrial silicon solar cells.

TL;DR: In this article, the authors provide state-of-the-art knowledge about environmental issues associated with wind energy development as well as strategies to mitigate environmental impacts to wind energy planners and developers.

TL;DR: The results of this paper support the potential role of planners in designating areas for wind farm development and provide a decision tool for wind-farm planning at the regional level.

TL;DR: In this paper, the physicochemical properties of the synthesized catalysts were studied by various techniques such as differential thermal analysis/thermogravimetric analysis (DTA-TGA), BET surface area, X-ray diffraction (XRD), temperature programmed desorption of CO 2 (TPD-CO 2 ), energy dispersive Xray (EDX) spectroscopy.

TL;DR: In this paper, a single cylinder, naturally aspirated, air cooled, constant speed compression ignition engine, fuelled with two modified fuel blends, B20 (Diesel-soybean biodiesel) and D80SBD15E4S1+ alumina fuel blend, with alumina as a nanoadditive, was compared with those of neat diesel.

TL;DR: In this article, the experimental biochemical methane potentials (BMP) of typical food waste (FW) and straw from northern China were individually measured in a 1L enclosed reactor at 35°C, and were 0.26 and 0.16m 3 /kg-VS (volatile solids), respectively.

TL;DR: In this paper, a genetic algorithm-based method for sizing the energy storage system (ESS) in micro-grids is proposed to find the energy and power capacities of the storage system that minimizes the operating cost of the microgrid.

TL;DR: In this paper, the authors established a database for the hydrodynamic performance of Wave Energy Converters (WECs) based on the collection and analysis of data available in the literature and extrapolations have been made in order to derive an annual average for the capture width ratio (CWR) of different technologies.

TL;DR: In this article, an artificial neural network (ANN) and Kalman filter (KF) were used to handle nonlinearity and uncertainty problems in wind speed forecasting in order to improve the accuracy of wind power generation.

TL;DR: In this paper, the feasibility of different power generation configurations comprising solar array, wind turbine and diesel generator in different locations within the geo-political zones of Nigeria was investigated and the analysis indicates that the PV/diesel/battery hybrid renewable system configuration is found as optimum architecture for both sensitivity cases of 1.1 and $1.3/l of diesel.

TL;DR: In this paper, a hybrid energy system is equipped with flywheel to store excess energy from photovoltaic (PV) and diesel systems as the energy sources, and an analysis focused on the impact of utilizing flywheel on power generation, energy cost, and net present cost for certain configurations of hybrid system.

TL;DR: In this paper, the authors compared the different effects of two regulatory policies: feed-in tariff (FIT) and renewable portfolio standard (PRS) on the social welfare.

TL;DR: In this article, a modeling framework is proposed and validated to simulate turbine wakes and associated power losses in wind farms, which combines the large-eddy simulation (LES) technique with blade element theory and a turbine-model-specific relationship between shaft torque and rotational speed.

TL;DR: Cannon et al. as mentioned in this paper used a state-of-the-art, 33-year reanalysis data set (MERRA) from NASA-GMAO to construct an hourly time series of nationally-aggregated wind power generation in Great Britain (GB), assuming a fixed, modern distribution of wind farms.

TL;DR: In this article, the authors analyze three major integration challenges related to the structural matching of demand with the supply of wind and solar power: low capacity credit, reduced utilization of dispatchable plants, and over-produced generation.

TL;DR: In this article, the optimal sizing and scheduling of isolated hybrid systems using an optimization framework is addressed with respect to the minimization of the levelized cost of energy over a lifetime of 20 years.

TL;DR: In this article, the authors compared the performance of the basic, dual-pressure and dual-fluid ORCs and the Kalina cycle for power generation from the geothermal fluid reservoir from energy, exergy and exergoeconomic viewpoints.

TL;DR: A new hybrid evolutionary-adaptive methodology for wind power forecasting in the short-term is proposed, successfully combining mutual information, wavelet transform, evolutionary particle swarm optimization, and the adaptive neuro-fuzzy inference system.

TL;DR: In this article, a Monte Carlo Simulation (MCS) approach to risk analysis based on an entire life-cycle representation of RET-investment projects is presented. And the presented financial analysis combined with MCS aids in optimizing the conceptual design of an investment project with respect to capital returns and risk.

TL;DR: In this paper, the Darrieus VAWT has been assessed on the performance, components and operational reliability, including the drawbacks of each variation that hindered the development into large scale rotor.

TL;DR: In this paper, the relationship between aggregated urban form descriptors and the potential to harvest solar energy within the city of London has been explored using neighbourhood-scale statistical models. And some recommendations for design strategies are offered with the aim of helping urban planners and designers improve the solar energy potential of new or existing urban areas.

TL;DR: In this article, the authors developed a new algorithm for maximum power point tracking (MPPT) in large PV systems under partial shading conditions (PSC), which combines the use of particle swarm optimization (PSO) for MPPT during the initial stages of tracking and then employs the traditional perturb and observe (PO) method at the final stages.

TL;DR: In this paper, the performance of a mixed mode solar greenhouse dryer with forced convection was investigated to dry red pepper and sultana grape, and the experimental drying curves show only the falling rate period.

TL;DR: In this article, a simple but efficient approach has been proposed for optimal placement and sizing of solar and wind DGs in distribution territory by considering electrical network power loss minimization, voltage stability and network security improvement.

TL;DR: In this article, the effects of building layout patterns and trees arrangement on the outdoor wind environment and thermal comfort at the pedestrian level were investigated by using Simulation Platform for Outdoor Thermal Environment (SPOTE).

TL;DR: In this article, the authors proposed a classification scheme involving three echelons of strategic, tactical and operational decision-making for maintenance logistics in offshore wind energy, where the strategic echelon deals with decisions regarding wind farm design for reliability, location and capacity of maintenance accommodations, selection of wind farm maintenance strategy, and outsourcing the repair services.