Dish-Stirling Systems: An Overview of Development and Status

2003 ◽  
Vol 125 (2) ◽  
pp. 135-151 ◽  
Author(s):  
Thomas Mancini ◽  
Peter Heller ◽  
Barry Butler ◽  
Bruce Osborn ◽  
Wolfgang Schiel ◽  
...  
Keyword(s):  
Power Systems ◽  
High Performance ◽  
Solar Power ◽  
Current Status ◽  
Present System ◽  
Maintenance Costs ◽  
Capital Costs ◽  
Market Opportunities ◽  
Substantial Progress ◽  
Primary Focus

Dish-Stirling systems have demonstrated the highest efficiency of any solar power generation system by converting nearly 30% of direct-normal incident solar radiation into electricity after accounting for parasitic power losses[1]. These high-performance, solar power systems have been in development for two decades with the primary focus in recent years on reducing the capital and operating costs of systems. Even though the systems currently cost about $10,000 US/kW installed, major cost reduction will occur with mass production and further development of the systems. Substantial progress has been made to improve reliability thereby reducing the operating and maintenance costs of the systems. As capital costs drop to about $3000 US/kW, promising market opportunities appear to be developing in green power and distributed generation markets in the southwestern United States and in Europe. In this paper, we review the current status of four Dish-Stirling systems that are being developed for commercial markets and present system specifications and review system performance and cost data. We also review the economics, capital cost, operating and maintenance costs, and the emerging markets for Dish-Stirling systems.

Thermodynamic Study of Advanced Supercritical Carbon Dioxide Power Cycles for High Performance Concentrating Solar Power Systems

2012 ◽  
Author(s):  
Craig S. Turchi ◽  
Zhiwen Ma ◽  
Ty Neises ◽  
Michael Wagner
Keyword(s):  
Power Systems ◽  
High Performance ◽  
High Efficiency ◽  
Solar Power ◽  
Thermal Power ◽  
Department Of Energy ◽  
Thermal Mass ◽  
Brayton Cycle ◽  
Concentrating Solar Power ◽  
Compact Size

In 2011, the U.S. Department of Energy (DOE) initiated a “SunShot Concentrating Solar Power R&D” program to develop technologies that have the potential for much higher efficiency, lower cost, and/or more reliable performance than existing CSP systems. The DOE seeks to develop highly disruptive Concentrating Solar Power (CSP) technologies that will meet 6¢/kWh cost targets by the end of the decade, and a high-efficiency, low-cost thermal power cycle is one of the important components to achieve the goal. Supercritical CO2 (s-CO2) operated in a closed-loop Brayton cycle offers the potential of equivalent or higher cycle efficiency versus superheated or supercritical steam cycles at temperatures relevant for CSP applications. Brayton-cycle systems using s-CO2 have a smaller weight and volume, lower thermal mass, and less complex power blocks versus Rankine cycles due to the higher density of the fluid and simpler cycle design. The simpler machinery and compact size of the s-CO2 process may also reduce the installation, maintenance and operation cost of the system.

scholarly journals Development of high-performance KrF and Raman laser facilities for inertial confinement fusion and other applications

1993 ◽  
Vol 11 (2) ◽  
pp. 331-346 ◽  
Author(s):  
M.J. Shaw ◽  
B. Edwards ◽  
G.J. Hirst ◽  
C.J. Hooker ◽  
M.H. Key ◽  
...  
Keyword(s):  
Power Systems ◽  
Inertial Confinement Fusion ◽  
High Performance ◽  
Short Pulse ◽  
High Reliability ◽  
Laser System ◽  
Raman Laser ◽  
Current Status ◽  
Inertial Confinement ◽  
Laser Amplifiers

This article describes the current status of the KrF development programme based on the Sprite laser system at the Rutherford Appleton Laboratory. High reliability and high shot rate have been demonstrated. Using a unique KrF-pumped Raman laser architecture, beam brightness exceeding 2×1019 Wcm-2 sterad-1 giving a focussed intensity >5 ×1017 Wcm-2 has been achieved. The development of transform-limited short-pulse oscillators is shown to be of importance in avoiding spectral broadening in air propagation of high-intensity beams. Beam smoothing of KrF beams in a multiplexed configuration has been demonstrated for the first time. The technique of echelon-free induced spatial incoherence has been shown to produce smooth intensity distributions in the far field, which remain essentially unchanged on amplification. The development of pulsed-power systems capable of exciting multikilojoule laser amplifiers for the next phase of development, the Supersprite system, is briefly discussed.

Assessment of Humid Air Turbines in Coal-Fired High Performance Power Systems

1996 ◽  
Author(s):  
Julianne M. Klara ◽  
Robert M. Enick ◽  
Scott M. Klara ◽  
Lawrence E. Van Bibber
Keyword(s):  
Power Systems ◽  
Thermal Efficiency ◽  
High Performance ◽  
Power Plants ◽  
Combined Cycle ◽  
Humid Air ◽  
Levelized Cost Of Electricity ◽  
Capital Costs ◽  
Air Turbine ◽  
Net Power Output

The purpose of this study is to assess the feasibility of incorporating a Humid Air Turbine (HAT) into a coal-based, indirectly fired High Performance Power System (HIPPS). The HIPPS/HAT power plant exhibits a one percentage point greater thermal efficiency than the combined-cycle HIPPS plant. The capital costs for the HIPPS and HIPPS/HAT plants with identical net power output are nearly equivalent at $1380/kW. Levelized cost of electricity (COE) for the same size plants is 5.3 cents/kWh for the HIPPS plant and 5.4 cents/kWh for the HIPPS/HAT plant; the HIPPS/HAT plant improved thermal efficiency is offset by the higher fuel cost associated with a lower coal/natural gas fuel ratio. However, improved environmental performance is associated with the HIPPS/HAT cycle, as evidenced by lower CO2, SO2, and NOx emissions. Considering the uncertainties associated with the performance and cost estimates of the yet unbuilt components, the HIPPS/HAT and HIPPS power plants are presently considered to be comparable alternatives for future power generation technologies. The Department of Energy’s Combustion 2000 Program will provide revised design specifications and more accurate costs for these components allowing more definitive assessments to be performed.

scholarly journals Simulation Based Three Phase Single Stage Grid connected Inverter Using Solar Photovoltaics

2021 ◽  
Vol 23 (05) ◽  
pp. 625-635
Author(s):  
Ms. Kruthi Jayaram ◽  
Keyword(s):  
Power Systems ◽  
High Performance ◽  
Solar Power ◽  
Renewable Energy Sources ◽  
Single Stage ◽  
Maximum Output ◽  
Electric System ◽  
Photovoltaic Array ◽  
Three Phase ◽  
Grid Connected Inverter

Since ages, the best alternative for fossil fuel generation is found from Renewable energy sources. One among them is the Solar energy which can produce solar power. Solar power can be taught as “Solar Electricity” and is the most practical, cleanest forms of Renewa-ble Energy. Solar Power Systems otherwise called as PV systems can be of various types like off-grid and on-grid systems. This paper, focuses on Grid connected solar electric system. The paper aims at modelling high performance Three Phase Single Stage Grid Connected Inverter. So as to achieve maximum output from the photovoltaic array, MPPT Tracking is connected. The conversion from DC output of photovoltaic array is done to AC so that it is fed into the grid, a IGBT based inverter is used which converts from DC to AC power. A Simulation model is developed in MATLAB Simulink and results are presented in the paper.

Activities Results of Experiments for Space Solar Power Systems at USEF

2006 ◽  
Author(s):  
Shoichiro Mihara ◽  
Takashi Saito ◽  
Yutaro Kobayashi ◽  
Hiroshi Kanai
Keyword(s):  
Power Systems ◽  
Solar Power ◽  
Space Solar Power

Sport, science and politics in Indonesia: challenges in epistemology within an evolving global context

2020 ◽  
Vol 42 (3) ◽  
pp. 4-17
Author(s):  
John Saunders ◽  
Rusli Lutan
Keyword(s):  
Physical Activity ◽  
Physical Education ◽  
High Performance ◽  
Health Sector ◽  
Health Science ◽  
Current Status ◽  
Sport Science ◽  
Economic Entity ◽  
Science And Politics ◽  
International Sport

This paper considers the current status of physical education and sport science in Indonesia from the perspective of the development of the professional knowledge base and research culture surrounding its practice. It seeks to place the field’s development within the broader context of international sport studies from 1945 to 2020. It identifies as major influences the process of globalisation and the growth of international sport as a significant political and economic entity. Physical education is acknowledged as a common historical base for the three modern strands within contemporary sports studies – medical /and health science, high performance studies, and sports business management. Future developments are considered in the context of the current pandemic. Covid19 and the world’s response to it has impacted on some key dimensions which underpin the current global sports economy – namely easy and convenient travel and the gathering of crowds in the widespread consumption of live sport. It is suggested that this might cause a major reset in the conduct of elite sport and sport festivals. The continuing growth of the physical activity and health sector is predicted and in the context of the serious challenges facing the sporting sector a case is made for increased resources to be moved back into the educational study and practice of sport and physical activity as a universal good.

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