scholarly journals A Novel Energy-from-Waste Approach for Electrical Energy Production by Galvano–Fenton Process

Molecules ◽  
2021 ◽  
Vol 26 (13) ◽  
pp. 4013
Author(s):  
Intissar Gasmi ◽  
Naoufel Haddour ◽  
Oualid Hamdaoui ◽  
Kaouther Kerboua ◽  
Abdulaziz Alghyamah ◽  
...  
Keyword(s):  
Energy Production ◽  
Advanced Oxidation Process ◽  
Organic Pollutant ◽  
Electrical Power ◽  
Electrical Energy ◽  
Batch Process ◽  
Design Parameters ◽  
Fenton Process ◽  
Electrical Energy Production ◽  
Energy From Waste

A novel approach allowing the production of electrical energy by an advanced oxidation process is proposed to eliminate organic micropollutants (MPs) in wastewaters. This approach is based on associating the Galvano–Fenton process to the generation of electrical power. In the previous studies describing the Galvano–Fenton (GF) process, iron was directly coupled to a metal of more positive potential to ensure degradation of organic pollutants without any possibility of producing electrical energy. In this new approach, the Galvano–Fenton process is constructed as an electrochemical cell with an external circuit allowing recovering electrons exchanged during the process. In this study, Malachite Green (MG) dye was used as a model of organic pollutant. Simultaneous MG degradation and electrical energy production with the GF method were investigated in batch process. The investigation of various design parameters emphasis that utilization of copper as a low-cost cathode material in the galvanic couple, provides the best treatment and electrical production performances. Moreover, these performances are improved by increasing the surface area of the cathode. The present work reveals that the GF process has a potential to provide an electrical power density of about 200 W m−2. These interesting performances indicate that this novel Energy-from-Waste strategy of the GF process could serve as an ecological solution for wastewater treatment.

Design and Test Campaign of a Ducted Horizontal Axis Wind Turbine

2018 ◽  
Author(s):  
Massimo Rivarolo ◽  
Alessandro Spoladore ◽  
Carlo Cravero ◽  
Alberto Traverso ◽  
Andrea Freda ◽  
...  
Keyword(s):  
Energy Harvesting ◽  
Wind Energy ◽  
Wind Turbine ◽  
Energy Production ◽  
Numerical Models ◽  
Electrical Power ◽  
Electrical Energy ◽  
Horizontal Axis ◽  
Horizontal Axis Wind Turbine ◽  
Electrical Energy Production

Electrical energy production by wind energy has assumed more and more relevance in the last years. This paper presents the design of a ducted horizontal axis wind turbine, in order to enhance the performance. The study compares the energy production of a ducted turbine to a traditional free turbine, highlighting the different features. In the first part of the work, different possible geometries have been investigated through a quasi-1D model, using correlations from literature to evaluate pressure, velocity and producible electrical power by the wind turbine. A 3D CFD model, in a set of configurations, has confirmed the preliminary results. The most promising geometries have been selected by combining the outputs of the two models. In order to confirm the results obtained by the numerical models, a test rig has been assembled at the wind tunnel of the Polytechnic School of the University of Genoa. Different possible configurations of the wind energy harvesting system have been tested: free turbine, horizontal duct, convergent duct and convergent-divergent ducts (with the turbine installed in the throat section). In particular, the convergent-divergent duct has shown the best results, with an increase factor close to 2.5 in terms of produced power, compared to the reference free turbine. Finally, the results obtained in the experimental campaign have been used to validate the two models (1D and 3D CFD). Considering the advantages in terms of energy production, this kind of configuration can be considered an interesting solution for many different situations, including energy harvesting.

scholarly journals Design and Modeling of a Solar Tower Chimney Effect Intended for Electrical Energy Production in Beni Abbes Site

2016 ◽  
Vol 13 (05) ◽  
pp. 134-141
Author(s):  
Moussaoui Abdeljabar ◽  
Mebarki Brahim ◽  
Sakhri Nasreddine ◽  
Draoui Belkacem ◽  
Rahmani Lakhdar
Keyword(s):  
Energy Production ◽  
Electrical Energy ◽  
Electrical Energy Production ◽  
Chimney Effect

scholarly journals Test campaign of a ducted wind turbine in real operating conditions

2019 ◽  
Vol 113 ◽  
pp. 03005
Author(s):  
Enrico Valditerra ◽  
Massimo Rivarolo ◽  
Aristide F. Massardo ◽  
Marco Gualco
Keyword(s):  
Wind Turbine ◽  
Urban Areas ◽  
Energy Production ◽  
Electrical Energy ◽  
Clean Energy ◽  
Operating Conditions ◽  
Pollutant Emissions ◽  
Ambient Conditions ◽  
Wind Speeds ◽  
Electrical Energy Production

Wind turbine installation worldwide has increased at unrested pace, as it represents a 100% clean energy with zero CO2 and pollutant emissions. However, visual and acoustic impact of wind turbines is still a drawback, in particular in urban areas. This paper focuses on the performance evaluation of an innovative horizontal axis ducted wind turbine, installed in the harbour of Genova (Italy) in 2018: the turbine was designed in order to minimize visual and acoustic impacts and maximize electrical energy production, also during low wind speed periods. The preliminary study and experimental analyses, performed by the authors in a previous study, showed promising results in terms of energy production, compared to a traditional generator ( factor >2.5 on power output). In the present paper, the test campaign on a scaled-up prototype, installed in the urban area of Genova, is performed, with a twofold objective: (i) comparison of the ducted innovative turbine with a standard one, in order to verify the increase in energy production; (ii) analysis of the innovative turbine for different wind speeds and directions, evaluating the influence of ambient conditions on performance. Finally, based on the obtained results, an improved setup is proposed for the ducted wind turbine, in order to further increase energy production mitigating its visual impact.

Thermally Regenerative Hydrogen/Oxygen Fuel Cell Power Cycles

1988 ◽  
Vol 110 (2) ◽  
pp. 107-112 ◽  
Author(s):  
J. H. Morehouse
Keyword(s):  
High Temperature ◽  
Fuel Cell ◽  
Energy Production ◽  
Technology Development ◽  
Thermal Dissociation ◽  
Electrical Energy ◽  
Power Cycles ◽  
Electrical Energy Production ◽  
Oxygen Fuel ◽  
Very High

Two thermodynamic power cycles are analytically examined for future engineering feasibility. These power cycles use a hydrogen-oxygen fuel cell for electrical energy production and use the thermal dissociation of water for regeneration of the hydrogen and oxygen. The first cycle uses a thermal energy input at over 2000K to thermally dissociate the water. The second cycle dissociates the water using an electrolyzer operating at high temperature (1300K) which receives both thermal and electrical energy as inputs. The results show that while the processes and devices of the 2000K thermal system exceed current technology limits, the high temperature electrolyzer system appears to be a state-of-the-art technology development, with the requirements for very high electrolyzer and fuel cell efficiencies seen as determining the feasibility of this system.

scholarly journals Total carbon dioxide emissions from ground source heat pump and groundwater one in Białystok

2019 ◽  
Vol 116 ◽  
pp. 00023
Author(s):  
Andrzej Gajewski
Keyword(s):  
Heat Pump ◽  
Carbon Dioxide Emissions ◽  
Energy Production ◽  
Electrical Energy ◽  
Heat Pumps ◽  
Climatic Conditions ◽  
Total Carbon ◽  
Coefficient Of Performance ◽  
Low Efficiency ◽  
Electrical Energy Production

To limit greenhouse gases emissions caused by energy production European Union (EU) prompts heat pump as heat generator which should decrease CO2 emissions to the atmosphere. Because of the climatic conditions and low efficiency of electrical energy production and transfer in Poland it could be possible a condensing gas boiler would emit less CO2. The analysis includes ten-year temperature measurements in Białystok where is more severe climate in Poland. Due to relatively high seasonal coefficient of performance (SCOP) value heat pumps can emit less CO2 than condensing gas boiler and can be applied as ecological heat generators.

scholarly journals Stacking of capacitive cells for electrical energy production by salinity exchange

2016 ◽  
Vol 318 ◽  
pp. 283-290 ◽  
Author(s):  
Guillermo R. Iglesias ◽  
Silvia Ahualli ◽  
María M. Fernández ◽  
María L. Jiménez ◽  
Ángel V. Delgado
Keyword(s):  
Energy Production ◽  
Electrical Energy ◽  
Electrical Energy Production
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