OOIR: Observatory of International Research

Papers

(The H4-Index of Renewable Energy is 122. The table below lists those papers that are above that threshold based on CrossRef citation counts [max. 250 papers]. The publications cover those that have been published in the past four years, i.e., from 2021-05-01 to 2025-05-01.)

Article	Citations
The role of limonene in the branching of straight chains in low-octane hydrocarbons	544
Numerical simulation of electricity generation potential through five vertical wells at Fengshun geothermal field in China	432
Advances in thermal energy storage for renewable energies integration in the energy system	427
Design of a 20 kWth gasification reactor for harnessing energy from rice husks	368
WITHDRAWN: Nonlinear Kalman filters based rotor effective wind speed estimation: An experimental comparison	313
Design and optimization of a novel phase change photovoltaic thermal utilization structure for building envelope	312
Modeling and estimation of moisture transport properties of drying of potential Amazon biomass for renewable energy: Application of the two-compartment approach and diffusive models with constant or m	293
Analyzing convective heat transfer in combined solar chimneys: A theoretical and numerical study of key influencing parameters	284
Wake scaling of actuator discs in different aspect ratios	278
Simultaneous optimization of electric production, azo dye, and yeast wastewater treatment in microbial fuel cell: Selection of the most suitable optimal conditions by PROMETHEE	277
Investigation of poultry slaughterhouse waste stream to produce bio-fuel for internal utilization	269
Corrigendum to “Tropho-metabolic transition during Chlorella sp. cultivation on synthesis of biodiesel” [Renew. Energy 98 (2016) 84–91]	262
Biodiesel production via simultaneous esterification and transesterification of Periplaneta americana oil with liquid lipase Eversa® transform 2.0	262
Corrigendum to “A novel environmental contour method for predicting long-term extreme wave conditions” [Renew. Energy 162 (2020) 926–933]	262
Corrigendum to “Thermo-hydrodynamic behavior of an innovative solar chimney” [Renew. Energy 145 (2020) 2074–2090]	254
Finding the most suitable existing irrigation dams for small hydropower development in Turkey: A GIS-Fuzzy logic tool	251
Optimal phasing of tidal stream power around the British Isles and within the English Channel for green ammonia production	249
Performance of a sedimentation tank for standing column wells coupled with geothermal heat pump systems	247
Validations of a double U-tube borehole model and a seasonal solar thermal energy storage system model	237
CFD and exergy analysis of subcritical/supercritical CO2 based naturally circulated solar thermal collector	235
Synthesis and evaluation of bifunctional polymeric agent for improving cold flow properties and oxidation stability of diesel-biodiesel blends	232
Evolving probabilistic modeling for long-term significant wave heights with a focus on extremes	231
Structural health monitoring of tendons in a multibody floating offshore wind turbine under varying environmental and operating conditions	229
Aquatic weed Spirodela polyrhiza, a potential source for energy generation and other commodity chemicals production	228
Ultrasound-NATDES/DMSO system for corn straw biomass conversion into platform compounds	228

Numerical evaluation of heat extraction performance in enhanced geothermal system considering rough-walled fractures	221
Research on productivity of stimulated natural gas hydrate reservoir	220
Kinetic and characteristic investigations on the conversion of cellulose to 5-hydroxymethylfurfural in the mixed metal salt system	216
Research progress in SO2 depolarized electrolysis at INET	215
A novel ensemble machine learning approach for optimizing sustainability and green hydrogen production in hybrid renewable-based organic Rankine cycle-operated proton exchange membrane electrolyser sy	213
A study on the characteristics and kinetic of co-catalytic pyrolysis with rape straw and ABS waste plastics	210
Regional assessment of extreme tropical cyclone waves for marine renewable energy development	207
Editorial Board	205
Influence of water hammer effect on low frequency oscillation of grid-connected hydropower station system	193
A robust I–V curve correction procedure for degraded photovoltaic modules	191
Iron (II) impregnated double-shelled hollow mesoporous silica as acid-base bifunctional catalyst for the conversion of low-quality oil to methyl esters	191
Investigation of the vortex evolution and hydraulic excitation in a pump-turbine operating at different conditions	190
Effect of angle of incidence on the optical-electrical-thermal performance of photovoltaic insulated glass units	189
Calculation of the incidence angle modifier of a Linear Fresnel Collector: The proposed declination and zenith angle model compared to the biaxial factored approach	188
Modelled annual thermal performance of a 50MWth refractory-lined particle-laden solar receiver operating above 1000°C	187
Unveiling the potential of operating time in improving machine learning models’ performance for waste biomass gasification systems	187
Assessment of regional-scale geothermal production based on a hybrid deep learning model: A case study of the southern Songliao Basin, China	186
A novel oscillatory thermal response test method for efficient characterization of ground thermal properties: Methodology and data analysis	184
Renewable energies: Simulation tools and applications. A special issue of Renewable Energy Journal dedicated to BS 2019 conference	181
A design-driven wind blade manufacturing model to identify opportunities to reduce wind blade costs	181
Construction of reduced mechanism and prediction of the RON of toluene primary reference fuel/ethanol/diisobutylene	178
Experimental-data-based, easy-to-use product gas composition prediction of a commercial open-top gasifier based on commercially used properties of softwood chips	176
Pivotal MoOx-decorated Ru/C with a monomeric structure boosts the room temperature and low-pressure hydrogenation of levulinic acid to γ−valerolactone	175
Intelligent charge compression ignition combustion for range extender medium duty applications	173
Application of iron oxides modified volcanic rock in continuous phenol wastewater anaerobic treatment: Performance and underlying mechanisms	168
Theoretical models for predicting ventilation performance of vertical solar chimneys in tunnels	167
Air supply subsystem efficiency optimization for fuel cell power system with layered control method	166
Pyramid floating solar still with enhanced condensation surfaces operating under actual weather conditions	163
Design and control of a parallel-axis twin-rotor counter-rotating marine current turbine for the shallow sea conditions	162
Global horizontal irradiance prediction model for multi-site fusion under different aerosol types	161
Economic and sustainability prospects for wet waste valorization: The case for sustainable aviation fuel from arrested anaerobic digestion	158
A multi-parameter estimation of layered rock-soil thermal properties of borehole heat exchanger in a stratified subsurface	158
Unlocking the potentials using humidifier-dehumidifier for proton exchange membrane fuel cell waste heat recovery	156
Dispersion characteristics of large-scale liquid hydrogen spills in a real-world liquid hydrogen refueling station with various releasing and environmental conditions	156
Optimization of hydrogen recirculation ejector for proton-exchange membrane fuel cells (PEMFC) systems considering non-equilibrium condensation	153
Tailoring CoAl2O4 inversion degree-driven photocarrier separation and injection for photoelectrochemical water splitting	152
The Spatiotemporal exploration of intercity transport energy efficiency in the mainland of China on the basis of improved stochastic frontier modelling	152
Optimization and analysis of the deflector system for a bidirectional H-type hydrokinetic twin-turbine system	152
Relationships between remarkable points in photovoltaic I–V curves	152
Acid-catalyzed co-hydrothermal carbonization of sewage sludge and mixed straws to produce high-quality solid fuel	152
Impact analysis of COVID-19 pandemic on the future green power sector: A case study in the Netherlands	151
Lab- and pilot-scale anaerobic digestion of municipal bio-waste and potential of digestate for biogas upgrading sustained by microbial analysis	148
Improvement of GH10 xylanase activity based on channel hindrance elimination strategy for better synergistic cellulase to enhance green bio-energy production	148
A comparative study on the performance of ice-source heat pumps versus other heat source heat pumps: A case study in the UK	148
Derivation and verification of three-dimensional wake model of multiple wind turbines based on super-Gaussian function	148
Experimental study on the effects of chemical or microwave treatment on the tensile strength of hot dry rock	147
A study to investigate the energy recovery potential from different macromolecules of a low-lipid marine Tetraselmis sp. biomass through HTL process	146
Multi-objective optimization of operation strategy in snow melting system for airfield runway using genetic algorithm: A case study in Beijing Daxing International Airport	145
Performance assessment of a Triple Coaxial-Cylinder Wave-Energy Converter (TCWEC)	145
Multi-timescale dispatch technology for islanded energy system in the Gobi Desert	143

Comparative study of grass pyrolysis over regenerated catalysts: Tyre ash, zeolite, and nickel-supported ash and zeolite	142
Low-head hydropower as a reserve power source: A case study of Northeastern Illinois	141
Site adaptation of global horizontal irradiance from the Copernicus Atmospheric Monitoring Service for radiation using supervised machine learning techniques	141
Revolutionizing biodiesel with novel MWCNT-COOH@TiO2-ZnO nanocatalysts for enhanced transesterification and tribocorrosion resistance	140
Sustainable solution to the critical challenges of an oceanic wave farm for maximizing power generation	138
Numerical simulation on the heat extraction from the porous medium-low temperature geothermal reservoirs by self-circulation wellbore and its enhanced methods	138
Energy, exergy, economic and environmental assessment of solar photovoltaic direct-drive refrigeration system for electronic device cooling	137
A spatial cost-benefit-externality modelling framework for siting of variable renewable energy farms: A case in Bohol, Philippines	137
Parametric optimization of a novel solar concentrating photovoltaic-near field thermophotovoltaic hybrid system based on cascade utilization of full-spectrum solar energy	136
Combined heat and power production based on renewable aluminium-water reaction	136
Estimation of kinematic viscosity of biodiesel-diesel blends: Comparison among accuracy of intelligent and empirical paradigms	136
Flash evaporation strategy of organic Rankine cycle for geothermal power performance enhancement: A case study	136
Unraveling causal dynamics: Exploring resource efficiency and biomass utilization in Malaysia's context	136
A granular multicriteria group decision making for renewable energy planning problems	134
An optimization decision-making framework for the optimal operation strategy of pumped storage hydropower system under extreme conditions	134
Modeling and interpretation of geomagnetic data related to geothermal sources, Northwest of Delijan	133
Sustainable synthesis of bio-diesel and jet-fuel range hydrocarbons from poisonous Abrus Precatorius seed oil over MoO3-HPW/Ga-KIT-6	133
Strategic bidding for a hydro-wind-photovoltaic hybrid system considering the profit beyond forecast time	132
Modeling of the evolution of the porous structure during a physical activation process for the production of activated biocarbon: A novel low conversion approach	132
Concentration performance of solar collector integrated compound parabolic concentrator and flat microchannel tube with tracking system	132
New trilobular geometry using advanced materials for experimentally validated enhanced heat transfer in shallow geothermal applications	131
Performance analysis of a concentrated direct absorption solar collector (DASC) with nanofluids using computational fluid dynamics and discrete ordinates radiation modelling (CFD-DORM)	130
Experimental investigation on direct expansion solar-air source heat pump for water heating application	130
Energy communities in rural areas: The participatory case study of Vega de Valcarce, Spain	130
A novel vortex-based velocity sampling method for the actuator-line modeling of floating offshore wind turbines in windmill state	129
Technical and economic analysis of biogas and solar photovoltaic (PV) hybrid renewable energy system for dairy cattle barns	128
Emissions trading scheme and energy consumption and output structure: Evidence from China	127
Electron deficiency modulates hydrogen adsorption strength of Ru single-atomic catalyst for efficient hydrogen evolution	126
Statistical analysis of electricity supply deficits from renewable energy sources across an Alpine transect	126
Effects of vortexes in feed header on air flow distribution of PEMFC stack: CFD simulation and optimization for better uniformity	126
3E thermodynamic modeling and optimization a novel of ARS-CPVT with the effect of inserting a turbulator in the solar collector	126
The effect of gas diffusion layer on electrochemical effective reaction area of catalyst layer and water discharge capability	126
Improving the performance of solar photovoltaic thermal cells using jet impingement and phase change materials cooling technology	126
RETRACTED: Method of Four Moments Mixture-A new approach for parametric estimation of Weibull Probability Distribution for wind potential estimation applications	125
Co-pyrolysis and co-combustion of orange peel and biomass blends: Kinetics, thermodynamic, and ANN application	125
Parametric analysis on performances of the pipe-encapsulated PCM (PenPCM) wall system coupled with gravity heat-pipe and nocturnal radiant cooler	125
Pyrolysis behaviour, kinetics and thermodynamic data of hydrothermal carbonization–Treated pulp and paper mill sludge	125
Heat extraction from abandoned petroleum wells utilizing coaxial borehole heat exchanger in Ordos basin, China	124
Conceptual design of solar/geothermal hybrid system focusing on technical, economic and environmental parameters	123
Performance analyses of supercritical carbon dioxide-based parabolic trough collectors with double-glazed receivers	123
Evaluating the pressure fluctuations during load rejection of two pump-turbines in a prototype pumped-storage system by using 1D-3D coupled simulation	122
Actuator fault tolerant offshore wind turbine load mitigation control	122
Energy analysis of Francis turbine for various mass flow rate conditions based on entropy production theory	122
Numerical investigation on the dynamic response characteristics of a thermoelectric generator module under transient temperature excitations	122
Spatial correlation network of renewable energy consumption and its influencing factors: Evidence from 31 Chinese provinces	122
Innovative passive cooling of photovoltaic panel using loop heat pipe technology with passive daytime radiative cooling	122
International trade of green hydrogen, ammonia and methanol: Opportunities of China's subregions	122