scholarly journals Experimental Investigation of Flow-Induced Motion and Energy Conversion of a T-Section Prism

Energies ◽  
2018 ◽  
Vol 11 (8) ◽  
pp. 2035 ◽  
Author(s):  
Nan Shao ◽  
Jijian Lian ◽  
Guobin Xu ◽  
Fang Liu ◽  
Heng Deng ◽  
...  
Keyword(s):  
Power Generation ◽  
Energy Conversion ◽  
Energy Production ◽  
Electrical Energy ◽  
High Amplitude ◽  
Active Power ◽  
Generation Efficiency ◽  
Aspect Ratios ◽  
Induced Motion ◽  
Electrical Energy Production

Flow-induced motion (FIM) performs well in energy conversion but has been barely investigated, particularly for prisms with sharp sections. Previous studies have proven that T-section prisms that undergo galloping branches with high amplitude are beneficial to energy conversions. The FIM experimental setup designed by Tianjin University (TJU) was improved to conduct a series of FIM responses and energy conversion tests on a T-section prism. Experimental results are presented and discussed, to reveal the complete FIM responses and power generation characteristics of the T-section prism under different load resistances and section aspect ratios. The main findings are summarized as follows. (1) Hard galloping (HG), soft galloping (SG), and critical galloping (CG) can be observed by varying load resistances. When the load resistances are low, HG occurs; otherwise, SG occurs. (2) In the galloping branch, the highest amplitude and the most stable oscillation cause high-quality electrical energy production by the generator. Therefore, the galloping branch is the best branch for harvesting energy. (3) In the galloping branch, as the load resistances decrease, the active power continually increases until the prism is suppressed from galloping to a vortex-induced vibration (VIV) lower branch with a maximum active power Pharn of 21.23 W and a maximum ηout of 20.2%. (4) Different section aspect ratios (α) can significantly influence the FIM responses and energy conversions of the T-section prism. For small aspect ratios, galloping is hardly observed in the complete responses, but the power generation efficiency (ηout,0.8 = 27.44%) becomes larger in the galloping branch.

A promising bioelectrochemical reactor integrating membrane distillation and microbial fuel cell for dual advantages of power generation and water recovery

2020 ◽  
Vol 6 (10) ◽  
pp. 2776-2788
Author(s):  
Thanh Ngoc-Dan Cao ◽  
Shiao-Shing Chen ◽  
Hau-Ming Chang ◽  
Thanh Xuan Bui ◽  
I-Chieh Chien
Keyword(s):  
Power Generation ◽  
Fuel Cell ◽  
Microbial Fuel Cell ◽  
Energy Production ◽  
Electrical Energy ◽  
Membrane Distillation ◽  
Water Recovery ◽  
The Novel ◽  
Electrical Energy Production ◽  
Bioelectrochemical Reactor

Water recovery from wastewater was accomplished simultaneously with electrical energy production by the novel integration of distillation membrane and microbial fuel cell to create a system called membrane distillation microbial fuel cell.

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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