scholarly journals MODELING AND DESIGN OF THERMAL POWER PLANTS USING CONCENTRATED SOLAR POWER SYSTEMS

2016 ◽  
Vol 11 (38) ◽  
pp. 95-113
Author(s):  
Rezq Moustafa ◽  
Ahmed Mansour
Keyword(s):  
Power Systems ◽  
Power Plants ◽  
Solar Power ◽  
Thermal Power ◽  
Thermal Power Plants ◽  
Concentrated Solar Power

scholarly journals Potential assessment of using dry cooling mode in two different solar thermal power plants.

2017 ◽  
Vol 2 (2) ◽  
pp. 18
Author(s):  
Taqiy Eddine Boukelia
Keyword(s):  
Power Plants ◽  
Solar Power ◽  
Thermal Power ◽  
The Other ◽  
Solar Thermal ◽  
Thermal Power Plants ◽  
Cooling Mode ◽  
Levelized Cost Of Electricity ◽  
Solar Thermal Power ◽  
Dry Cooling

Most of Concentrating Solar Power (CSP) plants are usually installed in desert regions where water resource availability is a critical limitation due to the lack of water required for the exploitation of these systems in these regions. Therefore, the aim of this study is to investigate the techno-economic competitiveness of deploying both modes of cooling (wet and dry) in two different parabolic trough solar thermal power plants integrated with thermal energy storage and fuel backup system; the first one is using thermic oil, while the other is working using molten salt. The obtained results show that the dry cooling mode can decrease the yields of the two power plants down to 8.7 % and 9.3 % for oil and salt configurations respectively. On the other hand, the levelized cost of electricity can increase by using this cooling option up to 9.3 % for oil plant, and 10.0 % for salt one. However, the main advantage of using dry cooling option is reducing water consumption which has been decreased by more than 94 % for both plants. The application of our methodology to other two sites worldwide, confirms the viability of the obtained results. The importance of this results is to show the effect of working fluids on the cooling system of solar power plants.

Comparative Optimization on the Focusing Methods of Solar-Electric Dish Stirling System

2012 ◽  
Vol 236-237 ◽  
pp. 714-719
Author(s):  
Wei Lan ◽  
Bin Wang ◽  
Yi Ming Feng
Keyword(s):  
Power Systems ◽  
High Speed ◽  
Power Plants ◽  
Solar Power ◽  
Thermal Power ◽  
Engineering Application ◽  
Solar Thermal ◽  
Solar Thermal Power ◽  
Low Emission ◽  
Practical Engineering

Nowadays, the high-speed economic development has caused significant consumption of energy. While the circumstance is getting severer, solar energy is taken as a kind of clean, environmental friendly resource with infinite storage that has aroused a wide public concern. Photovoltaic and solar thermal are two main categories of solar applications. Because of its high conversion efficiency, low emission and flexible installation, dish Stirling solar power technology is more preferable to be used among the solar thermal area. From the view of practical engineering application, this paper illustrates multiple focusing methods of the current dish Stirling solar power systems in detail, and the comparison of these methods are given to analyze their advantages, disadvantages and their application scenarios. It can be used for the future development of dish Stirling solar power technology and applied as a reference for large dish solar thermal power plants’ installations and tests.

scholarly journals Hydro-reservoir management and unit-commitment in energy optimization

2021 ◽  
Author(s):  
Flávio Leite Loução Junior ◽  
Marlon Sproesser Mathias ◽  
Claudia Sagastizábal ◽  
Luiz-Rafael Santos ◽  
Francisco Nogueira Calmon Sobral
Keyword(s):  
Power Systems ◽  
Demand Response ◽  
Power Plants ◽  
Unit Commitment ◽  
Thermal Power ◽  
Point Of View ◽  
Mixed Integer ◽  
Thermal Power Plants ◽  
Hydro Power ◽  
Optimal Dispatch

In partnership with CCEE, CEPEL and RADIX as industrial partners, in 2021 the study group focused on the dynamics of hourly prices when industrial consumers are demand responsive, as a follow-up of the industrial problem tackled in 2018 and 2019, on ``Day-ahead pricing mechanisms for hydro-thermal power systems''. Demand response is currently being tested by the Brazilian independent system operator and by the trading chamber, ONS. The program considers reductions of consumption of some clients as an alternative to dispatching thermal power plants out of the merit order. The day-ahead problem of finding optimal dispatch and prices for the Brazilian system is modelled as a mixed-integer linear programming problem, with non-convexities related to fixed costs and minimal generation requirements for some thermal power plants. The work focuses on the point of view of an individual hydro-power generator, to determine business opportunities related to adhering to a demand response program.

The Green Energy Fraction Parameter for Solar Thermal Power Systems

Solar Energy ◽  
2004 ◽  
Author(s):  
Aharon Roy
Keyword(s):  
Power Systems ◽  
Power Plants ◽  
Solar Power ◽  
Thermal Power ◽  
Energy Performance ◽  
Green Energy ◽  
Energy Fraction ◽  
Environmental Consequences ◽  
Project Assessment ◽  
Hybrid Power

A new solar power parameter, the green energy fraction is proposed as a useful metric for project assessment. Its concept is elucidated and the application to solar/fuel hybrid power plants is exhibited by numerical illustrations. This parameter is a simple tool for tracking the actual green energy performance of a particular plant. It proves to serve a significant yardstick for evaluating fuel avoidance, hence the environmental consequences of solar hybrid power plants. The green energy fraction provides a summation of the fuel avoidance for the whole system, simple or complex, and allows comparative evaluation between power plants for upright green energy (fuel avoidance), and thus enables standard assessments of various systems on an equal basis. It has both thermodynamic and engineering meaning and signifies one of the essential figures of merit for solar power systems. It should assist R&D management to improve technologies. Green energy entitles substantial financial benefits.

scholarly journals Day-Ahead Robust Economic Dispatch Considering Renewable Energy and Concentrated Solar Power Plants

Energies ◽  
2019 ◽  
Vol 12 (20) ◽  
pp. 3832 ◽  
Author(s):  
Bai ◽  
Ding ◽  
Wang ◽  
Chen
Keyword(s):  
Renewable Energy ◽  
Power Plants ◽  
Solar Power ◽  
Thermal Power ◽  
Economic Dispatch ◽  
Automatic Generation ◽  
Test System ◽  
Renewable Energy Resources ◽  
Concentrated Solar Power ◽  
Solar Field

A concentrated solar power (CSP) plant with energy storage systems has excellent scheduling flexibility and superiority to traditional thermal power generation systems. In this paper, the operation mechanism and operational constraints of the CSP plant are specified. Furthermore, the uncertainty of the solar energy received by the solar field is considered and a robust economic dispatch model with CSP plants and renewable energy resources is proposed, where uncertainty is adjusted by the automatic generation control (AGC) regulation in the day-ahead ancillary market, so that the system security is guaranteed under any realization of the uncertainty. Finally, the proposed robust economic dispatch has been studied on an improved IEEE 30-bus test system, and the results verify the proposed model.

Pyrolysis-Bridged Hybrid Power Systems and Their Application for Thermal Power Plants

2014 ◽  
Vol 28 (10) ◽  
pp. 6531-6539 ◽  
Author(s):  
Yuzhe Li ◽  
Chuigang Fan ◽  
Wenli Song
Keyword(s):  
Power Systems ◽  
Power Plants ◽  
Thermal Power ◽  
Thermal Power Plants ◽  
Hybrid Power Systems ◽  
Hybrid Power

scholarly journals Thermophysical properties experimentally tested for NaCl-KCl-MgCl2 eutectic molten salt as a next generation high temperature HTF in CSP systems

2020 ◽  
pp. 1-13
Author(s):  
Xiaoxin Wang ◽  
Jusus Rincon ◽  
Peiwen Li ◽  
Youyang Zhao ◽  
Judith Vidal
Keyword(s):  
Heat Transfer ◽  
High Temperature ◽  
Power Systems ◽  
Molten Salt ◽  
Thermophysical Properties ◽  
Power Plants ◽  
Solar Power ◽  
Thermal Power ◽  
Thermal Storage ◽  
Heat Of Fusion

Abstract A new eutectic chloride molten salt, MgCl2-KCl-NaCl (wt.% 45.98-38.91-15.11), has been recognized as one of the most promising high-temperature heat-transfer fluids (HTF) for both heat transfer and thermal storage for the 3rd Generation concentrated solar thermal power (CSP) systems. For the first time, some essential thermophysical properties of this eutectic chloride molten salt needed for basic heat transfer and energy storage analysis in the application of concentrating solar power systems have been experimentally tested and provided as functions of temperature in the range from 450 °C to 700 °C. The studied properties include heat capacity, melting point, heat of fusion, viscosity, vapor pressure, density, and thermal conductivity. The property equations provide essential database for engineers to use to calculate convective heat transfer in concentrated solar receivers, heat exchangers, and thermal storage for concentrated solar power plants.

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