The Influence of Direct Normal Irradiance Variation on the Optimal Parabolic Trough Field Size: A Problem Solved With Technical and Economical Simulations

Solar Energy ◽  
2002 ◽  
Author(s):  
Volker Quaschning ◽  
Rainer Kistner ◽  
Winfried Ortmanns
Keyword(s):  
Power Plant ◽  
Solar Irradiance ◽  
Thermal Power ◽  
Field Size ◽  
Parabolic Trough ◽  
Simulation Tools ◽  
Direct Normal Irradiance ◽  
Solar Field ◽  
The Given ◽  
Made In

One of the main problems when designing a solar thermal power plant is to find the optimal parabolic trough field size. Errors made in this context can easily lead into a financial disaster. Simulation tools that handle all aspects of a power plant (technical as well as economical) treat such economical problems as a whole and can be very helpful during the design process. However, even the smartest simulation tool depends significantly on the input parameters, such as the solar irradiance. As a result of the given considerations a new method for estimating the solar field size as a function of the solar irradiance is proposed. Additionally, this paper demonstrates a path to simulate the complexity of a parabolic trough power plant.

Influence of Direct Normal Irradiance Variation on the Optimal Parabolic Trough Field Size: A Problem Solved with Technical and Economical Simulations

2002 ◽  
Vol 124 (2) ◽  
pp. 160-164 ◽  
Author(s):  
Volker Quaschning ◽  
Rainer Kistner ◽  
Winfried Ortmanns
Keyword(s):  
Power Plant ◽  
Solar Irradiance ◽  
Thermal Power ◽  
Field Size ◽  
Parabolic Trough ◽  
Simulation Tools ◽  
Direct Normal Irradiance ◽  
Solar Field ◽  
The Given ◽  
Made In

One of the main problems when designing a solar thermal power plant is finding the optimal parabolic trough field size. Errors made in this context can easily lead to financial disaster. Simulation tools that handle all aspects of a power plant (technical as well as economical) treat such economical problems as a whole and can be very helpful during the design process. However, even the smartest simulation tool depends significantly on the input parameters, such as the solar irradiance. As a result of the given considerations, a new method for estimating the optimized solar field size as a function of the solar irradiance is proposed. Additionally, this paper demonstrates a path to simulate the complexity of a parabolic trough power plant.

scholarly journals Design of a 25 MWe Solar Thermal Power Plant in Iran with Using Parabolic Trough Collectors and a Two-Tank Molten Salt Storage System

2017 ◽  
Vol 2017 ◽  
pp. 1-11 ◽  
Author(s):  
Aidin Alinezhad Kordmahaleh ◽  
Mohammad Naghashzadegan ◽  
Kourosh Javaherdeh ◽  
Mohammadreza Khoshgoftar
Keyword(s):  
Power Plant ◽  
Storage System ◽  
Thermal Power ◽  
Operating Time ◽  
Load Condition ◽  
Solar Thermal ◽  
Parabolic Trough ◽  
Full Load ◽  
Total Operating Time ◽  
Solar Field

Nowadays, parabolic trough solar thermal plants are prevalent around the world. In different areas concerning the amount of solar radiation, their standard size is approximately between 20 and 100 MWe. Certainly, the right size of the solar field is the first selection with regard to nominal electrical power. A vast area will be economically unreasonable whereas a small area will mainly cause the power plant to operate at the part-load condition. This paper presents an economic modeling of a solar parabolic trough plant, operating at 25 MWe in Yazd, Iran. The varying types of collector dimensions have been investigated; then, by selecting autumnal equinox (22 September) at 12:00 PM as the design point, thermal performance of the solar power plant has been featured annually, in all conditions. The total operating time of the power plant is about 1726 hours (1248 hours in full-load condition). In the end, the effect of thermal storage tanks has been analyzed to save extra solar heat and use it at nights in hot months. By implementing a storage system, the total operating time will be increased to 3169 hours (2785 in full-load condition). Moreover, 7974 GJ useful thermal energy can be obtained from the solar field and storage system.

scholarly journals Energy and Exergy (2E) Analysis of an Optimized Solar Field of Linear Fresnel Reflectors for a Conceptual Direct Steam Generation Power Plant

Energies ◽  
2021 ◽  
Vol 14 (14) ◽  
pp. 4234
Author(s):  
Eduardo González-Mora ◽  
Ma. Dolores Durán-García
Keyword(s):  
Power Plant ◽  
Solar Irradiance ◽  
Power Plants ◽  
Solar Power ◽  
Thermal Power ◽  
Steam Generation ◽  
Promising Alternative ◽  
Energy And Exergy ◽  
Direct Steam ◽  
Solar Field

Direct steam generation is a promising alternative to conventional heat transfer fluids for solar thermal power plants using linear concentrators because water and steam do not have thermal and chemical stability problems. The novelty of this study, an energy and exergy (2E) analysis, was that it was performed on several configurations of a conceptual direct steam generation solar power plant with optimized Fresnel reflectors in Agua Prieta, Mexico coupled with a regenerative steam Rankine power cycle to quantify their efficiency and establish a reference for future implementation of this technology in concentrated solar power plants in Mexico. The thermal model was assumed to be a 1D steady-state flow and validated against results in the literature. It was then applied directly to a case study to determine the size of the solar field. The design point was the lowest solar irradiance day, and evaluating the solar multiple with the highest solar irradiance, taking care not to oversize the solar field, as suggested for solar plants without energy storage. Comparing the performance of the optimized Fresnel field against the FRESDEMO field of Plataforma Solar de Almería, a considerable decrease in the length of the loop has been demonstrated with a low reduction in thermal efficiency.

Nonlinear Trend Analysis of Mill Fan System Vibrations for Predictive Maintenance and Diagnostics

2012 ◽  
Vol 58 (4) ◽  
pp. 351-356
Author(s):  
Mincho B. Hadjiski ◽  
Lyubka A. Doukovska ◽  
Stefan L. Kojnov
Keyword(s):  
Power Plant ◽  
Trend Analysis ◽  
Thermal Power Plant ◽  
Power Plants ◽  
Thermal Power ◽  
Balkan Peninsula ◽  
Predictive Maintenance ◽  
Nonlinear Trend ◽  
The Subject ◽  
The Given

Abstract Present paper considers nonlinear trend analysis for diagnostics and predictive maintenance. The subject is a device from Maritsa East 2 thermal power plant a mill fan. The choice of the given power plant is not occasional. This is the largest thermal power plant on the Balkan Peninsula. Mill fans are main part of the fuel preparation in the coal fired power plants. The possibility to predict eventual damages or wear out without switching off the device is significant for providing faultless and reliable work avoiding the losses caused by planned maintenance. This paper addresses the needs of the Maritsa East 2 Complex aiming to improve the ecological parameters of the electro energy production process.

scholarly journals Economic Environmental Dispatch of Wind Integrated Thermal Power System

2020 ◽  
Vol 8 (6) ◽  
pp. 5186-5192
Keyword(s):  
Genetic Algorithm ◽  
Power Plant ◽  
Thermal Power ◽  
Nsga Ii ◽  
Strength Pareto Evolutionary Algorithm ◽  
Experimental Constraint ◽  
Thermal Power System ◽  
Power Plant Operation ◽  
Simulation Results ◽  
The Given

In electric power plant operation, Economic Environmental Dispatch (EED) of a thermal-wind is a significant chore to involve allocation of production amongst the running units so the price, NOx extraction status and SO2 extraction status are enhanced concurrently whilst gratifying each and every experimental constraint. This is an exceedingly controlled multiobjective optimizing issue concerning contradictory objectives having Primary and Secondary constraints. For the given work, a Non-dominated Sorting Genetic Algorithm-II (NSGA-II) is recommended for taking care of EED issue. In simulation results that are obtained by applying the two test systems on the proposed scheme have been evaluated against Strength Pareto Evolutionary Algorithm 2 (SPEA 2).

scholarly journals Reconstruction of the aero-mixture channels of the pulverized coal plant of the 100MW power plant unit

2011 ◽  
Vol 15 (3) ◽  
pp. 663-676
Author(s):  
Vladan Ivanovic ◽  
Titoslav Zivanovic ◽  
Dragan Tucakovic ◽  
Goran Stupar
Keyword(s):  
Power Plant ◽  
Coal Dust ◽  
Thermal Power ◽  
Pulverized Coal ◽  
Original Solution ◽  
Power Block ◽  
Made In

After the last revitalization of thermal power block of 100 MW in TPP ?Kostolac A?, made in the year 2004, during the operation of the plant, pulverized coal deposition often occurred in horizontal sections of the aero-mixture channels. Deposition phenomenon manifested itself in places ahead of spherical compensators in the direction of flow of pulverized coal to the burners, due to unfavorable configuration of these channels. Coal dust deposited in the channels dried and spontaneously combusted, causing numerous damage to channels and its isolation as well as the frequent stoppage of the operation for necessary interventions. The paper presents the original solution of reconstruction of aero-mixture channels which prevented deposition of coal dust and its eventual ignition. In this way the reliability of the mill plant is maximized and higher availability of boiler and block as a whole is achieved.

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