A parabolic dish/AMTEC solar thermal power system and its performance evaluation

Wu, Shuang–Ying; Xiao, Lan; Cao, Yiding; Li, You–Rong

doi:10.1016/j.apenergy.2009.08.041

Cited by 200 publications

(70 citation statements)

References 30 publications

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“…However, the disadvantages of the K-AMTECs are the increased ionic resistivity in the electrolyte, which leads to larger electrical losses, the larger molecular weight, which leads to larger flow rates for the same current, and reduced operating experience. An overview of the influence of these fluids on the performances of the cell is summarized in [2]. Due to its low vapor pressure lithium cells require larger operating temperatures.…”

Section: -P3mentioning

confidence: 99%

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Direct energy conversion using liquid metals

Onea

Ramos

Hering

et al. 2014

EPJ Web of Conferences

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Abstract. Liquid metals have excellent properties to be used as heat transport fluids due to their high thermal conductivity and their wide applicable temperature range. The latter issue can be used to go beyond limitations of existing thermal solar energy systems. Furthermore, the direct energy converter Alkali Metal Thermo Electric Converter (AMTEC) can be used to make intangible areas of energy conversion suitable for a wide range of applications. One objective is to investigate AMTEC as a complementary cycle for the next generation of concentrating solar power (CSP) systems. The experimental research taking place in the Karlsruhe Institute of Technology (KIT) is focused on the construction of a flexible AMTEC test facility, development, test and improvement of liquid-anode and vapor-anode AMTEC devices as well as the coupling of the AMTEC cold side to the heat storage tank proposed for the CSP system. Within this project, the investigations foreseen will focus on the analyses of BASE-metal interface, electrode materials and deposition techniques, corrosion and erosion of materials brought in contact with high temperature sodium. This prototype demonstrator is planned to be integrated in the KArlsruhe SOdium LAboratory (KASOLA), a flexible closed mid-size sodium loop, completely in-house designed, presently under construction at the Institute for Neutron Physics and Reactor Technology (INR) within KIT.

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Section: -P3mentioning

confidence: 99%

“…On the other hand, the estimated investing costs are higher and further research and development investigations are needed. Another combination of a CSP and AMTEC was studied also in [2], where it is reported that the total efficiency of the combined system could reach 20%.…”

Section: Introductionmentioning

confidence: 99%

Direct energy conversion using liquid metals

Onea

Ramos

Hering

et al. 2014

EPJ Web of Conferences

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“…Parabolic dish dimensions depend on the aperture size that not only influences the intercepted solar radiation, but also increases convection and radiation heat losses on the absorber [16]. Isolation walls are supposed to surround the absorber and the heat transfer in to it is assumed to be only by conduction process.…”

Section: System Descriptionmentioning

confidence: 99%

“…Basing on cyclic period of the Stirling engine, thermal efficiency of the engine se η [17,18] is given as follows: 12 corresponding to the heat leakage from the heat source and the heat sink; M is a proportionality constant that is independent from the temperature difference but depends on the used material properties for the regenerative processes and given by: (16) where v c and R are, respectively, the molar specific heat of the working gas ( ) The above mentioned term 1 F in equation (15) is calculated by:…”

Section: Parabolic Collectormentioning

confidence: 99%

Dish Stirling System Potential Assessment for Eight Main Sites in Madagascar

Praene¹,

Radanielina²,

Rakotondramiarana³

2015

JPHMT

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Solar energy is a green and attractive renewable energy source that can be converted for power generation. The objective of this work is to evaluate the potential of dish Stirling systems if they are used in the fourth worldwide largest island of Madagascar. For that purpose, a theoretical model of the dish Stirling system based on the geometrical configuration and heat transfer was developed and coded on Matlab. Simulations were run to investigate the energy efficiency variation of the system for eight main sites in Madagascar. As results, the proposed model enables to represent the system thermal behaviour to assess its efficiency. Among the eight studied sites, those which are on the coastal zones are more propitious to the dish Stirling system. While, in the north and northwest, the sites of Diego Suarez and Majunga present high efficiencies with, respectively, 31.65(%) and 31.07(%), it is in the south in fort-dauphin that thermal efficiency rate is maximal with 32.17(%). Convincing results that suggest that the implementation of this kind of facility will solve a large part of energy supply problems in these regions.Jean Philippe Praene et al.

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“…Most thermal power stations nowadays use parabolic trough collector (PTC) technologies [8][9][10][11][12][13][14][15] to heat some kind of synthetic oil (typically a eutectic mixture of biphenyl and diphenyl oxide [16]), which is referred to as heat transfer fluid or HTF. This is a very mature technology that is being used, for instance, in the 160-MW power plant that TSK, Acciona and Sener installed in Ouarzazate, Morocco; the operating temperature of this plant is 393 • C for the HTF coming out of the solar field and its cycle efficiency (from the thermal energy in the HTF to the electrical energy provided by the generator) has been measured to be 39.28%, which is a typical value for this type of plants.…”

Section: Introductionmentioning

confidence: 99%

On the Convenience of Using Simulation Models to Optimize the Control Strategy of Molten-Salt Heat Storage Systems in Solar Thermal Power Plants

Prieto

Martínez

Peon³

et al. 2017

Energies

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Thermal oil has been used as heat transfer fluid in many solar thermal power plants, which also use molten salts as thermal energy storage system. Since the engineering of these plants is relatively new, control of the thermal energy storage system is currently achieved in manual or semiautomatic ways, controlling its variables with proportional-integral-derivative (PID) regulators. Once the plant is running, it is very difficult to obtain permission to try new control strategies. Hence, most plants keep running on these simple, sometimes inefficient control algorithms. This paper explores the results obtained with different control strategies implemented on a complete model of energy storage systems based on molten salt. The results provided by the model allow the optimum control strategy to be selected. Comparison of the results obtained by simulation of these control strategies and actual results obtained from a real plant, confirm the accuracy of the selection made.

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A parabolic dish/AMTEC solar thermal power system and its performance evaluation

Cited by 200 publications

References 30 publications

Direct energy conversion using liquid metals

Direct energy conversion using liquid metals

Dish Stirling System Potential Assessment for Eight Main Sites in Madagascar

On the Convenience of Using Simulation Models to Optimize the Control Strategy of Molten-Salt Heat Storage Systems in Solar Thermal Power Plants

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