scholarly journals Continuation of Prof. Władysław Latek’s research – revitalization of old power units

2016 ◽  
Vol 64 (4) ◽  
pp. 957-962
Author(s):  
R. Krok ◽  
M. Pasko
Keyword(s):  
European Union ◽  
Electric Power ◽  
Energy Production ◽  
Power Plants ◽  
Electrical Energy ◽  
The Past ◽  
Power Stations ◽  
University Of Technology ◽  
Innovative Solutions ◽  
Electrical Energy Production

Abstract The research conducted by Prof. Władysław Latek (1916‒1991) has contributed greatly to development in turbogenerator design. The economical transformation taking place in Poland after 1991 initiated the process of revitalization of old power units in electric power stations. For the past 25 years, a team of scientists continuing the work on perfecting the turbogenerator design and design methods has been working in the Faculty of Electrical Engineering of Silesian University of Technology. The work of this team has led to proposing and implementing many modernization projects for turbogenerators operating in Polish power plants, as well as in power plants in European Union and Asian states. Numerous novel and innovative solutions have made it possible to significantly increase turbogenerator power, improve effectiveness of electrical energy production and reliability and safety of operation.

scholarly journals Analyzing the Problems of Develoment of Nuclear, Thermal and Renewable Energy in Terms of the Electric Power System of Ukraine

2020 ◽  
Vol 11 (514) ◽  
pp. 132-138
Author(s):  
O. V. Vinnychenko ◽  
Keyword(s):  
Renewable Energy ◽  
Energy Production ◽  
Nuclear Power ◽  
Power Plants ◽  
Renewable Energy Sources ◽  
Electrical Energy ◽  
Electric Power System ◽  
Current Status ◽  
Wear And Tear ◽  
Electrical Energy Production

In order to research the process of development of the energy systems of Ukraine, the current status and problems of development of nuclear, thermal and renewable energy are analyzed. The global trends in the development of nuclear energy is identified and it is noted that after the short-term decline caused by the accident at the «Fukushima-1» nuclear power plant, a gradual increase in the number of operating reactors has begun. The crisis situation in the nuclear and thermal energy market is outlined. Within the framework of the existing PSO (Public Service Obligation) model, the National nuclear power generating company «Energoatom» suffers significant losses. The limitation of electrical energy production at nuclear power plants in 2020 is an insufficiently grounded measure that will adversely affect the energy security of the country. Shutting down the power units of nuclear plants means that instead of producing energy one begins to consume energy, while a constant duty with ongoing servicing of equipment and maintaining the security systems is required. It is indicated that the coal-fired power plants of Ukraine have already developed their estimated resource and have an extremely low usage rate of installed capacity. In addition, coal-fired power plants in Ukraine are used in maneuvering modes, to cover peak loads, which leads to accelerated wear and tear of equipment and reduces production efficiency. A comparative analysis of the development of renewable energy sources (RES) is carried out and it is proved that the increase in electrical energy production due to RES requires the development of sufficient maneuvering capacities. The current situation indicates that the capacities of HPP and PHES are not sufficient, so at this time coal-fired power plants are used for such purposes, but such a part-time mode of operation leads to further wear and tear of equipment and an increase in emergency situations.

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.

Comparative Analysis Between Different Configurations in a Biomass Gasifier and a Genset for Electrical Energy Production

2020 ◽  
Vol 142 (7) ◽  
Author(s):  
Jandemarques Alexandre Soares da Silva ◽  
Francisco Everton Tavares de Luna ◽  
Vicente de Vasconcelos Claudino Filho ◽  
Merques do Nascimento Freitas
Keyword(s):  
Diesel Engine ◽  
Electric Power ◽  
Fixed Bed ◽  
Reactor Core ◽  
Electrical Energy ◽  
Supply Pipe ◽  
Ash Deposit ◽  
Flow Through ◽  
Downdraft Fixed Bed ◽  
Electrical Energy Production

Abstract The effect of different gensets coupled to a downdraft, fixed bed gasifier was investigated, pruning residue from five different tree species was used. This gasifier was designed to power a dual (produced gas/diesel) engine, with a maximum power electric generation of 20 kWe. This engine was first replaced by a four-cylinder engine, and later by a six-cylinder diesel engine, which underwent a conversion process for the Otto cycle; it was thus possible to operate the genset only with produced gas. This modification allowed an increase in the produced electric power from 20 kWe to 32 kWe. To operate this engine only with the produced gas, without harming its capacity to generate electric power, it required many modifications, as an increase in motor supply pipe diameter. Also, due to excessive accumulation of ash on the grate that separates the reactor core from the ash deposit, a mechanical system that clears this grate has been installed. This device allows gases produced in the gasification to have a continuous flow through the grate, being manually operated whenever required. In order to evaluate the viability of this new set gasifier/genset, some parameters such as consumption, power output, and system efficiency were studied, and a comparison was made with the data generated by works previously done by the same laboratory team and using the same gasifier.

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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