scholarly journals Advanced Self-Passivating Alloys for an Application under Extreme Conditions

Metals ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 1255
Author(s):  
Andrey Litnovsky ◽  
Felix Klein ◽  
Xiaoyue Tan ◽  
Janina Ertmer ◽  
Jan W. Coenen ◽  
...  
Keyword(s):  
Power Plant ◽  
Smart Materials ◽  
Renewable Energy Sources ◽  
Development Program ◽  
Alloy Sample ◽  
Concentrated Solar Power ◽  
Power Stations ◽  
Base Matrix ◽  
Modeling And Experiments

Self-passivating Metal Alloys with Reduced Thermo-oxidation (SMART) are under development for the primary application as plasma-facing materials for the first wall in a fusion DEMOnstration power plant (DEMO). SMART materials must combine suppressed oxidation in case of an accident and an acceptable plasma performance during the regular operation of the future power plant. Modern SMART materials contain chromium as a passivating element, yttrium as an active element and a tungsten base matrix. An overview of the research and development program on SMART materials is presented and all major areas of the structured R&D are explained. Attaining desired performance under accident and regular plasma conditions are vital elements of an R&D program addressing the viability of the entire concept. An impressive more than 104-fold suppression of oxidation, accompanied with more than 40-fold suppression of sublimation of tungsten oxide, was attained during an experimentally reproduced accident event with a duration of 10 days. The sputtering resistance under DEMO-relevant plasma conditions of SMART materials and pure tungsten was identical for conditions corresponding to nearly 20 days of continuous DEMO operation. Fundamental understanding of physics processes undergone in the SMART material is gained via fundamental studies comprising dedicated modeling and experiments. The important role of yttrium, stabilizing the SMART alloy microstructure and improving self-passivating behavior, is under investigation. Activities toward industrial up-scale have begun, comprising the first mechanical alloying with an industrial partner and the sintering of a bulk SMART alloy sample with dimensions of 100 mm × 100 mm × 7 mm using an industrial facility. These achievements open the way to further expansion of the SMART technology toward its application in fusion and potentially in other renewable energy sources such as concentrated solar power stations.

Modeling and Simulation of a Parabolic Trough Power Plant

Green ◽  
2012 ◽  
Vol 2 (2-3) ◽  
Author(s):  
Jo ao P. Silva ◽  
Rui Castro
Keyword(s):  
Power Plant ◽  
Power Systems ◽  
Renewable Energy Sources ◽  
Storage System ◽  
Thermal Storage ◽  
Energy Sources ◽  
Concentrated Solar Power ◽  
Parabolic Trough ◽  
To Come ◽  
Wind Resources

AbstractIn Portugal, the increase in the production of electricity based on renewable energy sources has been achieved based mainly on hydro and wind resources. The sun has been underexploited so far. The Portuguese territory presents high levels of solar radiation, and thus it is urged to find solutions that take advantage of this widely recognized fact. In this context, it is important to come forward with concentrated solar power systems as an option. The most mature of these technologies is the parabolic trough. The purpose of this paper is to report the outcomes of a study concerning a parabolic trough power plant, with thermal storage. This paper aims to present a model of a parabolic trough power plant, including the associated thermal storage system, to validate it against results reported in the literature and to build up a simulator enabling the assessment of the performance of the plant for several locations in the Portuguese territory. Based on the obtained results, some conclusions regarding the behavior of the system are drawn.

The role of sensible heat in a concentrated solar power plant with thermochemical energy storage

2019 ◽  
Vol 190 ◽  
pp. 42-53 ◽  
Author(s):  
Xiaoyi Chen ◽  
Dong Zhang ◽  
Yan Wang ◽  
Xiang Ling ◽  
Xiaogang Jin
Keyword(s):  
Energy Storage ◽  
Power Plant ◽  
Solar Power ◽  
Solar Power Plant ◽  
Sensible Heat ◽  
Concentrated Solar Power

The Influence of Incubator and Accelerator Participation on Nanotechnology Venture Success

2021 ◽  
pp. 104225872110245
Author(s):  
Jennifer L. Woolley ◽  
Nydia MacGregor
Keyword(s):  
Venture Capital ◽  
Empirical Work ◽  
Development Program ◽  
Development Programs ◽  
Government Grants ◽  
Recent Growth ◽  
Using Data

This study investigates how venture development programs such as private incubators, university incubators, and accelerators influence the success of participating nanotechnology startups. With the recent growth in such programs, empirical work is needed to compare their impact on participants across programs and with nonparticipants. Using data on firm bankruptcies, liquidation, government grants, and venture capital, we find benefits, but the influence of each venture development program varies greatly. We further investigate the influence of program services and resources to clarify program heterogeneity beyond existing typologies. The results clarify the role of these programs and ecosystem intermediaries.

scholarly journals A review of challenges and benefits of integration of CHP plant into the grid: a case study in Serbia

2021 ◽  
Author(s):  
Rade M. Ciric ◽  
Sasa N. Mandic
Keyword(s):  
Energy Efficiency ◽  
Negative Impact ◽  
Renewable Energy Sources ◽  
Increase Energy Efficiency ◽  
High Voltage Supply ◽  
The Republic ◽  
Technical Solutions ◽  
The Impact

AbstractThe Republic of Serbia must make significant efforts to promote and exploit renewable energy sources and increase energy efficiency in all energy sectors to ensure energy security and economic competitiveness, reduce the negative impact on the environment from energy production and use, and contribute to global efforts to reduce greenhouse gases. Within the paper several issues of integration of recently realized CHP plant are introduced and discussed. Firstly, the legal and energy policy issues in the Republic of Serbia regarding connecting CHP to the grid are presented. The challenges and technical solutions for CHP connection to the grid, as well as power quality issues and the role of the CHP plant during the restoration of power supply during the maintenance of the substation and unplanned loss of high voltage supply, are presented and discussed. Finally, the impact of prospective massive integration of CHP on the energy balance and CO2 emission reduction in the province of Vojvodina in Serbia is investigated and discussed. Since it is the first CHP plant realized in Serbia, it is crucial that experience be shared to all potential stakeholders in the future energy efficiency projects.

scholarly journals Comparison between Concentrated Solar Power and Gas-Based Generation in Terms of Economic and Flexibility-Related Aspects in Chile

Energies ◽  
2021 ◽  
Vol 14 (4) ◽  
pp. 1063
Author(s):  
Catalina Hernández Moris ◽  
Maria Teresa Cerda Guevara ◽  
Alois Salmon ◽  
Alvaro Lorca
Keyword(s):  
Natural Gas ◽  
Solar Power ◽  
Renewable Energy Sources ◽  
Cost Effective ◽  
Hybrid Plant ◽  
Point Of View ◽  
Concentrated Solar Power ◽  
Economic Point ◽  
Hybrid Plants ◽  
Cost Of Energy

The energy sector in Chile demands a significant increase in renewable energy sources in the near future, and concentrated solar power (CSP) technologies are becoming increasingly competitive as compared to natural gas plants. Motivated by this, this paper presents a comparison between solar technologies such as hybrid plants and natural gas-based thermal technologies, as both technologies share several characteristics that are comparable and beneficial for the power grid. This comparison is made from an economic point of view using the Levelized Cost of Energy (LCOE) metric and in terms of the systemic benefits related to flexibility, which is very much required due to the current decarbonization scenario of Chile’s energy matrix. The results show that the LCOE of the four hybrid plant models studied is lower than the LCOE of the gas plant. A solar hybrid plant configuration composed of a photovoltaic and solar tower plant (STP) with 13 h of storage and without generation restrictions has an LCOE 53 USD/MWh, while the natural gas technology evaluated with an 85% plant factor and a variable fuel cost of 2.0 USD/MMBtu has an LCOE of 86 USD/MWh. Thus, solar hybrid plants under a particular set of conditions are shown to be more cost-effective than their closest competitor for the Chilean grid while still providing significant dispatchability and flexibility.

Construction of Power Stations Designed and Built as Single Units

1983 ◽  
Vol 197 (1) ◽  
pp. 1-26 ◽  
Author(s):  
H Masding
Keyword(s):  
Power Plant ◽  
Single Unit ◽  
Capital Cost ◽  
Single Units ◽  
Construction Time ◽  
Power Stations ◽  
Engineering Costs ◽  
Running Cost ◽  
The Uk

This paper sets out an assessment of the value and practicality of the construction of fossil fired generating plant designed and built as single units and includes a proposal for the design and layout of a single unit designed to maximize the benefits derived from this concept. The conclusion is that an acceptable design of power plant, based on the construction of single 600 MW units, can be developed for the UK system which could prove to be advantageous in construction time, in capital cost and in running cost. The layout applies equally effectively to large ‘green field’ sites or for replanting existing stations; in addition, the plant can be replicated in detail and thereby reduce design and engineering costs. Finally the layout can also be applied in principle to smaller units for overseas utilities as required by their system developments.

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