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Статті в журналах з теми "Concentrated solar thermal"

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Автор: Grafiati

Опубліковано: 10 грудня 2022

Оновлено: 28 січня 2023

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1

Panchenko, Vladimir. "Photovoltaic Thermal Module With Paraboloid Type Solar Concentrators." International Journal of Energy Optimization and Engineering 10, no. 2 (April 2021): 1–23. http://dx.doi.org/10.4018/ijeoe.2021040101.

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Анотація:

The article presents the results of the development and research of the solar photovoltaic thermal module with paraboloid type solar radiation concentrators. The structure of the solar module includes a composite concentrator, which provides uniform illumination by concentrated solar radiation on the surface of the cylindrical photovoltaic thermal photoreceiver in the form of the aluminum radiator with photovoltaic converters. When exposed in concentrated solar radiation, the electrical efficiency of specially designed matrix photovoltaic converters increases, and the heat taken by the heat carrier increases the overall efficiency of the solar module. Uniform illumination of photovoltaic converters with concentrated solar radiation provides an optimal mode of operation. The consumer can use the received electric and thermal energy in an autonomous or parallel power supply with the existing power grid.

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2

Thirunavukkarasu, V., and M. Cheralathan. "Thermal Performance of Solar Parabolic Dish Concentrator with Hetero-Conical Cavity Receiver." Applied Mechanics and Materials 787 (August 2015): 197–201. http://dx.doi.org/10.4028/www.scientific.net/amm.787.197.

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Concentrated solar collectors have high efficiency as compared to flat plate and evacuated tube solar collectors. Cavity receivers are mainly used on the parabolic dish concentrators and tower type concentrator systems. The heat transfer surfaces of cavity receiver are composed by coiled metal tube. Heat transfer fluid flows in the internal spaces of coiled metal tube, and the external surfaces would absorb the highly concentrated solar energy. This paper explains the thermal performance of parabolic dish concentrator system with hetero-conical cavity receiver. The experimental analysis was done during the month of April 2014 on clear sunny days at Chennai [Latitude: 13.08oN, Longitude: 80.27oE] to study its thermal performance.

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3

Shao, Limin, and Shuli Yang. "Concentrating System’s Design and Performance Analysis for Spacial Solar Array." Xibei Gongye Daxue Xuebao/Journal of Northwestern Polytechnical University 36, no. 3 (June 2018): 471–79. http://dx.doi.org/10.1051/jnwpu/20183630471.

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Анотація:

A large area of sunlight onto solar cells is gathered by concentrating system for spacial concentrating solar array, which reduces the amount of solar cells by increasing light intensity onto the solar cells of the unit area. Under concentrating conditions, the short-circuit current, open-circuit voltage, fill factor, efficiency, operating temperature and strong thermal-electrical coupling characteristics of concentrating solar cells are different from the conventional solar cells because of the high intensity and high operating temperature. The concentrating module design, solar cell selection, and design of solar cell heat-dissipation have been carried out. The thermal-electric coupling model of special concentrating photovoltaic system has been established. The relationships among concentrated ratio, substrate-thickness, thermal conductivity of substrate-material and solar cell’s temperature, density of short-circuit current, open-circuit voltage, maximum output power have been analyzed, which provide a view to a reasonabl0e match and selection of multi-parameters in engineering design. Results show that the concentrated ratio has an overall effect on the open-circuit voltage, short-circuit current, efficiency and operating temperature of the solar cell. There is a strong coupling relationship among the parameters, and the positive and negative impacts caused by the concentrating characteristics should be weighed in the engineering design. The short-circuit current density of concentrating solar cells is proportional to the concentrated ratio. Under the lower concentrated ratio circumstance, fill factor and efficiency is not substantially affected by the concentrated ratio. The maximum output power and open-circuit voltage increase with the increase of concentrated ratio. Temperature of concentrating solar cells has an adverse effect on the open-circuit voltage, efficiency and output power, which needs high efficient radiator measures to be taken. The operating temperature of solar cells could be decreased significantly by the high thermal conductivity of the substrate-material. The concentrated ratio between 9~15 is recommended for spacial solar array, which not only embodies the advantage of concentrator like improving the cell-efficiency and decreasing the cost, but also doesn’t exact the deploying precision of concentrating system.

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4

Murat Cekirge, Huseyin, Serdar Eser Erturan, and Richard Stanley Thorsen. "CSP (Concentrated Solar Power) - Tower Solar Thermal Desalination Plant." American Journal of Modern Energy 6, no. 2 (2020): 51. http://dx.doi.org/10.11648/j.ajme.20200602.11.

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5

Singh, Harwinder, and R. S. Mishra. "Perfortmance Evaluations of Concentrated Solar Thermal Power Technology." International Journal of Advance Research and Innovation 4, no. 1 (2016): 263–71. http://dx.doi.org/10.51976/ijari.411638.

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Анотація:

This review work consists of detailed description on various types of research in the field of solar thermal systems and various methods to improve the performance of the collector systems. Concentrated solar thermal systems are the highly advanced and large scale technology, which is used to generate the thermal energy and converted it in to electric energy through the application of power producing device coupled with the collector systems, therefore from the research point of view improvement in the working performance of the solar thermal system is highly important to achieve the better efficient device.

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6

Vighas, V. R., S. Bharath Subramaniam, and G. Harish. "Advances in concentrated solar absorber designs." Journal of Physics: Conference Series 2054, no. 1 (October 1, 2021): 012038. http://dx.doi.org/10.1088/1742-6596/2054/1/012038.

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Abstract Concentrated solar power (CSP) with thermal storage (TES) can generate continuous power output. It can be used for various applications by overcoming the intermittent solar radiation. As heat losses occur in absorber because of heat flux, tracking, optical errors. Hence, improving efficiency arises. Reducing heat loss is vital. The absorbers are volumetric, cavity, tubular liquid, solid particle-type. The occurrence of heat flux on absorbers from heliostats. Performance affects because of clouds in transient conditions. The review focuses on advances in solar absorber designs. It concentrates on meeting sustainable development’s energy and power requirements.

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7

Ahmad, S. Q. S., R. J. Hand, and C. Wieckert. "Glass melting using concentrated solar thermal energy." Glass Technology: European Journal of Glass Science and Technology Part A 58, no. 2 (April 11, 2017): 41–48. http://dx.doi.org/10.13036/17533546.58.2.012.

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8

Al-Kouz, Wael, Jamal Nayfeh, and Alberto Boretti. "Design of a parabolic trough concentrated solar power plant in Al-Khobar, Saudi Arabia." E3S Web of Conferences 160 (2020): 02005. http://dx.doi.org/10.1051/e3sconf/202016002005.

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Анотація:

The paper discusses the design options for a concentrated solar power plant in Al-Khobar, Saudi Arabia. The specific conditions, in terms of weather and sun irradiance, are considered, including sand and dust, humidity, temperature and proximity to the sea. Different real-world experiences are then considered, to understand the best design to adapt to the specific conditions. Concentrated solar power solar tower with thermal energy storage such as Crescent Dunes, or concentrated solar power solar tower without thermal energy storage but boost by natural gas combustion such as Ivanpah are disregarded for the higher costs, the performances well below the design, and the extra difficulties for the specific location such as temperatures, humidity and sand/dust that suggest the use of an enclosed trough. Concentrated solar power parabolic trough without thermal energy storage such as Genesis or Mojave, of drastically reduced cost and much better performances, do not provide however the added value of thermal energy storage and dispatchability that can make interesting Concentrated solar power vs. alternatives such as wind and solar photovoltaic. Thus, the concentrated solar power parabolic trough with thermal energy storage of Solana, of intermediate costs and best performances, albeit slightly lower than the design values, is selected. This design will have to be modified to enclosed trough and adopt a Seawater, Once-trough condenser. Being the development peculiar, a small scale pilot plant is suggested before a full-scale development.

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9

Cañadas, Inmaculada, Victor M. Candelario, Giulia De Aloysio, Jesús Fernández, Luca Laghi, Santiago Cuesta-López, Yang Chen, et al. "Characterization of Solar-Aged Porous Silicon Carbide for Concentrated Solar Power Receivers." Materials 14, no. 16 (August 17, 2021): 4627. http://dx.doi.org/10.3390/ma14164627.

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Porous silicon carbide is a promising material for ceramic receivers in next-generation concentrated solar power receivers. To investigate its tolerance to thermal shock, accelerated ageing of large coupons (50 × 50 × 5 mm) was conducted in a solar furnace to investigate the effects of thermal cycling up to 1000 °C, with gradients of up to 22 °C/mm. Non-destructive characterization by computed X-ray tomography and ultrasonic inspection could detect cracking from thermal stresses, and this informed the preparation of valid specimens for thermophysical characterization. The effect of thermal ageing on transient thermal properties, as a function of temperature, was investigated by using the light-flash method. The thermophysical properties were affected by increasing the severity of the ageing conditions; thermal diffusivity decreased by up to 10% and specific heat by up to 5%.

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10

Powell, Kody M., Khalid Rashid, Kevin Ellingwood, Jake Tuttle, and Brian D. Iverson. "Hybrid concentrated solar thermal power systems: A review." Renewable and Sustainable Energy Reviews 80 (December 2017): 215–37. http://dx.doi.org/10.1016/j.rser.2017.05.067.

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11

Zhang, H., S. J. Pang, Z. J. Luo, Y. Shuai, and H. P. Tan. "Thermal Stress Analysis of Solar Thermochemical Reactor Using Concentrated Solar Radiation." KnE Materials Science 4, no. 2 (October 14, 2018): 173. http://dx.doi.org/10.18502/kms.v4i2.3049.

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12

Gallo, Alessandro, Aitor Marzo, Edward Fuentealba, and Elisa Alonso. "High flux solar simulators for concentrated solar thermal research: A review." Renewable and Sustainable Energy Reviews 77 (September 2017): 1385–402. http://dx.doi.org/10.1016/j.rser.2017.01.056.

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13

Mahadevan, Barath Kanna, Sahar Naghibi, Fariborz Kargar, and Alexander A. Balandin. "Non-Curing Thermal Interface Materials with Graphene Fillers for Thermal Management of Concentrated Photovoltaic Solar Cells." C — Journal of Carbon Research 6, no. 1 (December 22, 2019): 2. http://dx.doi.org/10.3390/c6010002.

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Анотація:

Temperature rise in multi-junction solar cells reduces their efficiency and shortens their lifetime. We report the results of the feasibility study of passive thermal management of concentrated multi-junction solar cells with the non-curing graphene-enhanced thermal interface materials. Using an inexpensive, scalable technique, graphene and few-layer graphene fillers were incorporated in the non-curing mineral oil matrix, with the filler concentration of up to 40 wt% and applied as the thermal interface material between the solar cell and the heat sink. The performance parameters of the solar cells were tested using an industry-standard solar simulator with concentrated light illumination at 70× and 200× suns. It was found that the non-curing graphene-enhanced thermal interface material substantially reduces the temperature rise in the solar cell and improves its open-circuit voltage. The decrease in the maximum temperature rise enhances the solar cell performance compared to that with the commercial non-cured thermal interface material. The obtained results are important for the development of the thermal management technologies for the next generation of photovoltaic solar cells.

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14

Zhang, Hai Tao, Zi Long Wang, and Hua Zhang. "Thermal Analysis of Concentrated Photovoltaic System." Applied Mechanics and Materials 44-47 (December 2010): 2213–18. http://dx.doi.org/10.4028/www.scientific.net/amm.44-47.2213.

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Анотація:

Studying the thermal process of concentrating system could help us better understand how photovoltaic system works and seek ways to increase electricity production so as to reduce the cost of power generation. Energy transfer of concentrating photovoltaic system includes the process of light to electricity and the process of direct current to alternating current. This paper presents the factors that affect the energy transfer efficiency of the former one. And at last author points out that the key factor to increase the power production of photovoltaic system is controlling the temperatu- re of solar cell.

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15

Bošnjaković, Mladen, and Vlado Tadijanović. "Environment impact of a concentrated solar power plant." Tehnički glasnik 13, no. 1 (March 23, 2019): 68–74. http://dx.doi.org/10.31803/tg-20180911085644.

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Анотація:

More recently, there has been an increasing interest in the use of concentrated solar thermal energy for the production of electricity, but also for the use in cogeneration and trigeneration. In this sense, the increasing use of solar thermal energy in urban areas is expected, and its impact on the environment is inducing an increasing interest. The paper analyses the impact of concentrated solar power technology (linear Fresnel, parabolic trough, parabolic dish, and central tower) on the environment in terms of water consumption, land use, wasted heat, emissions of gases, emissions of pollutants that include the leakage of heat transfer fluid through pipelines and tanks, impact on flora and fauna, impact of noise and visual impact. The impact on the environment is different for different concentrated solar power technologies and depends on whether thermal energy storage is included in the plant. Water is mainly used for cooling the system, but also for cleaning the surface of the mirror. To reduce water consumption, other cooling technologies (e.g. air cooling) are being developed. The available data from the literature show large variances depending on the size of the plant, geographic location and applied technology.

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16

K.Panjwani, M., S. X. Yang, F. Xiao, K. H. Mangi, R. M. Larik, F. H. Mangi, M. Menghwar, J. Ansari, and K. H. Ali. "Hybrid concentrated photovoltaic thermal technology for domestic water heating." Indonesian Journal of Electrical Engineering and Computer Science 16, no. 3 (December 1, 2019): 1136. http://dx.doi.org/10.11591/ijeecs.v16.i3.pp1136-1143.

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There is an increasing reliance on renewable energy especially Solar Energy as the fossils are on the way to depletion.It offers an environmental friendly solution with an affordable comparative paradigm. Solar photovoltaic-thermal collectors have remained of the particular interest because of their higher overall efficiencies. Most of its applications related with solar hybrid PVT systems focuses more on electrical output rather than thermal output, and the contacting fluid is allowed to act as a coolant to assure that the solar cell operates in the ranges specified by the manufacturer to guarantee higher electrical efficiency. This ultimately allows fluid to retain higher temperature that could be utilized for meeting the heating demand of any residential household. First, the PVT analyses are performed over a system comprising of Fresnel-based Solar Module to allow higher irradiance to fall for relative higher conversion of efficiency and to achieve higher temperature ranges in the contacting fluid (water). The electrical parameters are compared, and a significant increase in the power ranges is concluded. Secondly, a simulated thermal structure of the heating tank is presented that utilises the heated water from the PVT system in meeting the heating demand of a residential household. When accounting all the electrical parameters, approximately 10% increase is noticed in power produced, and sufficient energy used for the traditional heating of water is retained.

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17

Nithyanandam, K., A. Narayan, and R. Pitchumani. "Analysis and design of a radial waveguide concentrator for concentrated solar thermal applications." Energy 151 (May 2018): 940–53. http://dx.doi.org/10.1016/j.energy.2018.03.015.

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18

Uma Maheswari, C., and R. Meenakshi Reddy. "CFD Analysis of a Solar Parabolic Dish." Applied Mechanics and Materials 787 (August 2015): 280–84. http://dx.doi.org/10.4028/www.scientific.net/amm.787.280.

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Concentrated solar thermal (CST) power has been used for years to help supply power to certain energy markets and has proven to be fairly successful. Unfortunately the high prices of these solar technologies have prohibited them from really making a large impact on the world's energy scene. This study analyses the structural, thermal, and CFD performance of a parabolic dish concept which could be the basis for large scale commercial concentrated solar thermal electricity. Simulation of the structural, thermal and CFDanalysis of the dish with varying metallic properties (Aluminium, Copper and StainlessSteel) under different windconditionswas compared. Computational Fluid Dynamics (CFD) was done to simulate the thermal performance of the dish at two different wind velocities.

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19

Wagner, Sharon J., and Edward S. Rubin. "Economic implications of thermal energy storage for concentrated solar thermal power." Renewable Energy 61 (January 2014): 81–95. http://dx.doi.org/10.1016/j.renene.2012.08.013.

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20

Fernández-González, Daniel, Janusz Prazuch, Íñigo Ruiz-Bustinza, Carmen González-Gasca, Juan Piñuela-Noval, and Luis Verdeja González. "Iron Metallurgy via Concentrated Solar Energy." Metals 8, no. 11 (October 25, 2018): 873. http://dx.doi.org/10.3390/met8110873.

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Анотація:

Environmental protection is deeply rooted in current societies. In this context, searching for new environmentally friendly energy sources is one of the objectives of industrial policies in general, and of the metallurgical industries in particular. One of these energy sources is solar energy, which offers a great potential in high temperature applications, such as those required in metallurgy processes, when properly concentrated. In this paper, we propose the utilization of concentrated solar energy in ironmaking. We have studied the utilization of concentrated solar thermal in the agglomeration of iron ore mixtures and in the obtaining of iron via reduction with carbon (and coke breeze). The results from the experiments show the typical phases of the iron ore sinters and the presence of iron through smelting reduction.

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21

Boretti, Alberto, Jamal Nayfeh, and Wael Al-Kouz. "Validation of SAM Modeling of Concentrated Solar Power Plants." Energies 13, no. 8 (April 15, 2020): 1949. http://dx.doi.org/10.3390/en13081949.

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The paper proposes the validation of the latest System Advisor Model (SAM) vs. the experimental data for concentrated solar power energy facilities. Both parabolic trough, and solar tower, are considered, with and without thermal energy storage. The 250 MW parabolic trough facilities of Genesis, Mojave, and Solana, and the 110 MW solar tower facility of Crescent Dunes, all in the United States South-West, are modeled. The computed monthly average capacity factors for the average weather year are compared with the experimental data measured since the start of the operation of the facilities. While much higher sampling frequencies are needed for proper validation, as monthly averaging dramatically filters out differences between experiments and simulations, computational results are relatively close to measured values for the parabolic trough, and very far from for solar tower systems. The thermal energy storage is also introducing additional inaccuracies. It is concluded that the code needs further development, especially for the solar field and receiver of the solar tower modules, and the thermal energy storage. Validation of models and sub-models vs. high-frequency data collected on existing facilities, for both energy production, power plant parameters, and weather conditions, is a necessary step before using the code for designing novel facilities.

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22

Cotfas, Petru A., and Daniel T. Cotfas. "Solar Hybrid System Component Study in Low Concentrated Sunlight." International Journal of Photoenergy 2021 (April 29, 2021): 1–13. http://dx.doi.org/10.1155/2021/6677473.

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The solar energy is increasingly used as a renewable energy source. Raising the efficiency of energy conversion from solar to useful energy (electric and thermal) represents an important research direction in the renewable energy domain. Using hybrid systems for electric and thermal energy cogeneration can be a solution. In this study, a hybrid system (HS) is designed, manufactured, implemented, and experimentally tested under concentrated sunlight with a concentration ratio of 25 suns, obtained using a Fresnel lens as a sunlight concentrator. The HS comprises of four concentrated photovoltaic cells (CPVs), four thermoelectric generators (TEGs), and a solar thermal collector (STC). The HS is studied in three configurations of the exposed surface: only the CPV active area, the CPV active area with ceramic support, and the CPV active area with ceramic support covered with graphite sheet. Results reveal that the efficiency of each system component is affected by the exposed surface. If the efficiencies of the CPVs decrease from 32.3% to 30.8% from the first configuration to the last one, the efficiencies of TEGs and STC increase from 0.12% to 0.44 and from 26.3% to 52.0%, respectively. Increasing the concentration ratio from 25 to 33 suns, the power of the CPVs increases with almost 31%, but the efficiency decreases slightly, instead the efficiencies of the TEGs and STC increase.

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23

Rojas-Morín, A., and J. Fernández-Reche. "Estimate of thermal fatigue lifetime for the INCONEL 625lCF plate while exposed to concentrated solar radiation." Revista de Metalurgia 47, no. 2 (April 30, 2011): 112–25. http://dx.doi.org/10.3989/revmetalmadrid.1038.

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24

Gomaa, Mohamed, Ramadan Mustafa, Hegazy Rezk, Mujahed Al-Dhaifallah, and A. Al-Salaymeh. "Sizing Methodology of a Multi-Mirror Solar Concentrated Hybrid PV/Thermal System." Energies 11, no. 12 (November 23, 2018): 3276. http://dx.doi.org/10.3390/en11123276.

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Анотація:

The use of a concentrated photovoltaic (CPV) system significantly reduces the required solar cell area that often accounts for the major cost of a PV solar system. A comprehensive performance analysis of a multi-mirror solar concentrated hybrid PV thermal (CPVT) system was conducted. Among different concentrating systems, Linear Fresnel Reflector (LFR) systems are more effective due to their simplicity of operation and low fabrication cost. A mathematical model and the simulation of a CPVT system employing a linear configuration and horizontal absorber is developed here in order to evaluate its performance parameters, using a FORTRAN programing technique. The concentrator system consists of, different width of flat glass mirrors placed under various inclination angles, focusing sunlight on to the PV solar cells mounted along the active cooling system. The effect of focus distance on concentration ratio, collector width, and heat gained by the coolant fluid are investigated. All parameters of the linear Fresnel reflector solar concentrator system are determined and the effect of cooling mass flow rate and cooling inlet temperature upon the system performance is evaluated. With regards to simulation results obtained via the focus distances, the width of mirrors decreased by increasing the number of mirrors, and in turn by increasing the focus distances, this resulted in an increase in CR values. For the specific number of mirrors, concentration ratio increased simultaneously increasing the focus distance; furthermore, increasing the number of mirrors resulted in a reduction in both the width of the mirrors and their inclination angles, and an increase in CR values. The results further confirmed that the total (combined electrical-thermal) efficiency is higher than that of the individual electrical as well as thermal efficiency; reaching approximately 80% and showed no sensitivity to the rises in cooling water temperature for temperature cases under consideration.

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25

Mazo, M. Alejandra, Isabel Padilla, Aurora López-Delgado, Aitana Tamayo, and Juan Rubio. "Silicon Oxycarbide and Silicon Oxycarbonitride Materials under Concentrated Solar Radiation." Materials 14, no. 4 (February 21, 2021): 1013. http://dx.doi.org/10.3390/ma14041013.

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Анотація:

The potential application of silicon oxycarbonitride (SiOCN), silicon oxycarbide (SiOC) and silicon oxycarbide–SiC (SiOC–SiC) for photothermal devices such as volumetric solar absorbers has been studied evaluating the response to thermal shock from a Fresnel lens. The accelerated ageing test comprises fast heating (32 °C min−1) and cooling rates (27 °C min−1) from 100 to 1000 °C and dwelling times of 10 min. Porous materials (SiOCNp and SiOCp) failed the thermal shock tests; they were massively degraded by the formation of a large depression in the focus of solar radiation. Dense materials (SiOCd and SiOC–SiCd) withstood 100 cycles of thermal shock ageing tests due to the formation of a protective silica layer. The absorptance values for dense materials remained fairly constant before and after thermal shock tests: from 94.5 to 94.3% for SiOCd and from 93.3 to 93.3% for SiOC–SiCd. These preliminary studies indicate their potential for high-temperature solar receiver applications.

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26

Yang, Chao-Kai, Tsung-Chieh Cheng, Chin-Hsiang Cheng, Chi-Chia Wang, and Chang-Chun Lee. "Open-loop altitude-azimuth concentrated solar tracking system for solar-thermal applications." Solar Energy 147 (May 2017): 52–60. http://dx.doi.org/10.1016/j.solener.2017.03.014.

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27

Xiao Jun, 肖君, 魏素 Wei Su, 魏秀东 Wei Xiudong, 任兰旭 Ren Lanxu, and 卢振武 Lu Zhenwu. "Solar Flux Measurement Method for Concentrated Solar Irradiance in Solar Thermal Power Tower System." Acta Optica Sinica 35, no. 1 (2015): 0112003. http://dx.doi.org/10.3788/aos201535.0112003.

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28

Jeyashree, Y., Y. Sukhi, A. Vimala Juliet, S. Lourdu Jame, and S. Indirani. "Concentrated solar thermal energy harvesting using Bi2Te3based thermoelectric generator." Materials Science in Semiconductor Processing 107 (March 2020): 104782. http://dx.doi.org/10.1016/j.mssp.2019.104782.

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29

Pelay, Ugo, Lingai Luo, Yilin Fan, Driss Stitou, and Mark Rood. "Thermal energy storage systems for concentrated solar power plants." Renewable and Sustainable Energy Reviews 79 (November 2017): 82–100. http://dx.doi.org/10.1016/j.rser.2017.03.139.

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30

Tamaura, Yutaka. "Conversion of Concentrated Solar Thermal Energy into Chemical Energy." AMBIO 41, S2 (March 2012): 108–11. http://dx.doi.org/10.1007/s13280-012-0264-7.

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31

Geroe, Steven. "Non-recourse project financing for concentrated solar thermal power." Utilities Policy 60 (October 2019): 100937. http://dx.doi.org/10.1016/j.jup.2019.100937.

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32

Khalil Anwar, M., B. S. Yilbas, and S. Z. Shuja. "A thermal battery mimicking a concentrated volumetric solar receiver." Applied Energy 175 (August 2016): 16–30. http://dx.doi.org/10.1016/j.apenergy.2016.04.110.

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Tzouganatos, N., R. Matter, C. Wieckert, J. Antrekowitsch, M. Gamroth, and A. Steinfeld. "Thermal Recycling of Waelz Oxide Using Concentrated Solar Energy." JOM 65, no. 12 (October 16, 2013): 1733–43. http://dx.doi.org/10.1007/s11837-013-0778-x.

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34

Baltes, Liana, Silvia Patachia, Ozgur Ekincioglu, Hulusi Ozkul, Catalin Croitoru, Corneliu Munteanu, Bogdan Istrate, and Mircea Tierean. "Polymer-Cement Composites Glazing by Concentrated Solar Energy." Coatings 11, no. 3 (March 18, 2021): 350. http://dx.doi.org/10.3390/coatings11030350.

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Анотація:

Macro defect free (MDF) cements are polymer-cement composites characterized by high biaxial flexural strength compared to traditional concrete, having as a drawback a low water resistance. Glazing these composite materials with an inorganic enamel containing TiO2 nano-particles has led to a high water-stable material with advanced photocatalytic properties. Classic glazing by thermal treatment of samples, at 1050 °C, requires energy consumption and long-time performing. The purpose of this paper is to test the use of solar radiation as a source of energy in the glazing process. A vertical axis solar furnace has been used, from PROMES-CNRS Solar Laboratory, Font-Romeu Odeillo, France, and it has been observed that a uniform appearance of the glaze coating has been achieved; it shows high scratch resistance, meaning a good hardness and adhesion to the substrate. The obtained film was also characterized by SEM, EDS and XRD, aiming to evidence the coat morphology, the TiO2 distribution and its crystallinity alteration, when compared to the samples obtained by classic thermal treatment. The conclusion of the paper is that using solar radiation in the MDF cement glazing process is a promising approach for obtaining multifunctional materials.

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Zhang, Hao, Yong Shuai, Bachirou Guene Lougou, BoShu Jiang, and Xing Huang. "Thermal characteristics and thermal stress analysis of solar thermochemical reactor under high-flux concentrated solar irradiation." Science China Technological Sciences 63, no. 9 (April 30, 2020): 1776–86. http://dx.doi.org/10.1007/s11431-019-1486-2.

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36

Felsberger, Richard, Armin Buchroithner, Bernhard Gerl, and Hannes Wegleiter. "Conversion and Testing of a Solar Thermal Parabolic Trough Collector for CPV-T Application." Energies 13, no. 22 (November 23, 2020): 6142. http://dx.doi.org/10.3390/en13226142.

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Анотація:

In the field of solar power generation, concentrator systems, such as concentrator photovoltaics (CPV) or concentrated solar power (CSP), are subject of intensive research activity, due to high efficiencies in electrical power generation compared to conventional photovoltaics (PV) and low-cost energy storage on the thermal side. Even though the idea of combining the thermal and electrical part in one absorber is obvious, very few hybrid systems (i.e., concentrator photovoltaics-thermal systems (CPV-T)) are either described in literature or commercially available. This paper features the conversion of a commercial thermal parabolic trough collector to a CPV-T hybrid system using multi-junction PV cells. The design process is described in detail starting with the selection of suitable PV cells, elaborating optical and mechanical system requirements, heat sink design and final assembly. Feasibility is proven by practical tests involving maximum power point tracking as well as empirical determination of heat generation and measurement results are presented.

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37

Moreno-Gamboa, F., E. Vera-Duarte, and G. Guerrero-Gómez. "Daily performance of a solar hybrid regenerative gas turbine in Colombia." Journal of Physics: Conference Series 2073, no. 1 (October 1, 2021): 012012. http://dx.doi.org/10.1088/1742-6596/2073/1/012012.

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Abstract This work presents the evolution of the operation of a regenerative hybrid solar gas turbine in an average day of the year. The system is evaluated by means of a thermodynamic model that includes a solar concentrated heliostat field solar concentrator with central receiver, a combustion chamber, and the thermal engine. The model is applied in Barranquilla, Colombia using local temperature and the solar radiation estimated with a theoretical model. Power output, the global efficiency and thermal engine efficiency are estimated. Additionally, to estimate the temperatures in different states of the cycle with and without regenerator. Finally, the impact of the regenerator is evaluated, which can increase the temperature of the solar receiver by up to 13.6%, and the inlet temperature to the combustion chamber increases by 17.3% at noon, when solar radiation is maximum.

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38

Blanco, M., Th I. Oikonomou, and V. Drosou. "EU-SOLARIS: The European Infrastructure for Concentrated Solar Thermal and Solar Chemistry Technologies." Procedia Environmental Sciences 38 (2017): 485–91. http://dx.doi.org/10.1016/j.proenv.2017.03.111.

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39

Mendecka, B., L. Lombardi, and Pawel Gladysz. "Waste to energy efficiency improvements: Integration with solar thermal energy." Waste Management & Research: The Journal for a Sustainable Circular Economy 37, no. 4 (March 8, 2019): 419–34. http://dx.doi.org/10.1177/0734242x19833159.

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Анотація:

Hybridisation of waste to energy with solar facility can take competing energy technologies and make them complementary. However, realising the benefits of solar integration requires careful consideration of the technical feasibility as well as the economic and environmental benefits of a proposed system. In this work, a solar-integrated waste-to-energy plant scheme is proposed and analysed from an energy, environmental and economic point of view. The new system integrates a traditional waste-to-energy plant with a concentrated solar power plant, by superheating the steam produced by the waste-to-energy flue gas boiler in the solar facility. The original waste-to-energy plant – that is, the base case before introducing the integration with concentrated solar power – has a thermal power input of 50 MW and operates with superheated steam at 40 bar and 400 °C; net power output is 10.7 MW, and the net energy efficiency is equal to 21.65%. By combining waste-to-energy plant with the solar facility, the power plant could provide higher net efficiency (from 1.4 to 3.7 p.p. higher), lower specific CO2 emissions (from 69 to 180 kg MWh-1 lower) and lower levellised cost of electricity (from 13.4 to 42.3 EUR MWh-1 lower) comparing with the standalone waste to energy case. The study shows that: (i) in the integrated case and for the increasing steam parameters energy, economic and ecological performances are improved; (ii) increasing the solar contribution could be an efficient way to improve the process and system performances. In general, we can conclude that concentrated solar-power technology holds significant promise for extending and developing the waste to energy systems.

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40

Al-Kayiem, Hussain, and Sanan Mohammad. "Potential of Renewable Energy Resources with an Emphasis on Solar Power in Iraq: An Outlook." Resources 8, no. 1 (February 25, 2019): 42. http://dx.doi.org/10.3390/resources8010042.

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Анотація:

This study presents an outlook on the renewable energies in Iraq, and the potential for deploying concentrated solar power technologies to support power generation in Iraq. Solar energy has not been sufficiently utilized at present in Iraq. However, this energy source can play an important role in energy production in Iraq, as the global solar radiation ranging from 2000 kWh/m2 to a 2500 kWh/m2 annual daily average. In addition, the study presents the limited current solar energy activities in Iraq. The attempts of the Iraqi government to utilize solar energy are also presented. Two approaches for utilizing concentrated solar power have been proposed, to support existing thermal power generation, with the possibility of being implemented as standalone plants or being integrated with thermal power plants. However, the cost analysis has shown that for 50 kW concentrated solar power in Iraq, the cost is around 0.23 US cent/kWh without integration with energy storage. Additionally, notable obstacles and barriers bounding the utilization of solar energy are also discussed. Finally, this study proposes initiatives that can be adopted by the Iraqi government to support the use of renewable energy resources in general, and solar energy in particular.

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41

Sami, Samuel. "Analysis of Nanofluids Behavior in Concentrated Solar Power Collectors with Organic Rankine Cycle." Applied System Innovation 2, no. 3 (July 16, 2019): 22. http://dx.doi.org/10.3390/asi2030022.

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Анотація:

In this paper, the performance of nanofluids in a Parabolic Trough Concentrating Solar Collector (CSP)-based power generation plant, an Organic Rankine Cycle (ORC), and a Thermal Energy Storage (TES) system is studied. This study is intended to investigate the enhancement effect and characteristics of nanofluids Al2O3, CuO, Fe3O4 and SiO2 in integrated concentrating solar power (CSP) with ORC, and TES under different solar radiations, angles of incidence, and different nanofluid concentrations. The refrigerant mixture used in the ORC loop to enhance the ORC efficiency is an environmentally sound quaternary mixture composed of R134a, R245fa, R125, R236fa. The results showed that the power absorbed, and power collected by the CSP collector and thermal energy stored in the storage tank are enhanced with the increase of the solar radiation. It was also found that the CSP hybrid system efficiency has been enhanced mainly by the increase of the solar radiation and higher nanofluid concentrations over the thermal oil as base fluid. Also, the study concludes that the nanofluid CuO outperforms the other nanofluids—Al2O3, Fe3O4 and SiO2—and has the highest CSP solar collector performance compared to the other nanofluids and thermal oil base fluid under study at similar conditions. Finally, it was found that the model’s prediction compares fairly with data reported in the literature; however, some discrepancies exist between the model’s prediction and the experimental data.

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42

Natraj, K. S. Reddy, and B. N. Rao. "Investigation of Variable Wind Loads and Shape Accuracy of Reflectors in Parabolic Trough Collector." Proceedings of the 12th Structural Engineering Convention, SEC 2022: Themes 1-2 1, no. 1 (December 19, 2022): 1495–504. http://dx.doi.org/10.38208/acp.v1.681.

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Concentrated solar power is the technology involving reflectors which reflects the solar radiation and concentrates the radiations onto a receiver which absorbs the solar radiation and rises the temperature of the fluid flowing through it and the fluid is further used for process heating or power generation. Solar parabolic trough is the most established technology among the concentrated solar power technologies. For the optimization of the technology it is important to optimize the parabolic trough collectors from structural point of view as even gravity load is observed to cause a substantial effect on the shape of the reflector. Shape accuracy of the reflector is measured in terms of slope deviation. The slope deviation induced due to gravity and wind loads causes a change in optical and thermal efficiencies. The paper presents the study on pressure distribution at the surface of parabolic trough collector under different wind velocity, angle of attack of wind and orientation of the trough. Further, the pressure values over the trough surface are used to estimate the shape errors for the surface of the trough.

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43

Shanmugam, Mathiyazhagan, and Lakshmi Sirisha Maganti. "Evaluation of Heat Flux Distribution Characteristics of a Concentrated Solar Dish Collector with different geometric indices." IOP Conference Series: Earth and Environmental Science 1100, no. 1 (December 1, 2022): 012001. http://dx.doi.org/10.1088/1755-1315/1100/1/012001.

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Abstract The concentrated solar dish collector is a promising technology for generating both electricity and thermal energy together and it is termed as concentrated photovoltaic thermal. The important component of the parabolic dish collector is the absorber; where all concentrated lights are falling. The present paper has investigated the heat flux distribution characteristics of the flat plate absorber based solar dish collector by using the ray-tracing simulations. In concentrating dish collector, rim angle and dish diameter are significant factor of the flux distributions. The present study reported the average heat flux distribution, maximum flux intensity and non-uniformity of flux distribution for different geometrical conditions. The maximum heat flux rate attains the rim angle between 35 to 55° for any dish diameter. Where the peak flux intensity raises concerning raises of rim angle and peak flux occurred at rim angle 90°. The increase of heat flux intensity causes the non-uniformity of heat flux distribution over the absorber surface. The non-uniformity factor is mainly influenced by the rim angle, not a dish diameter. When rim angle 15 & 75°, the non-uniformity is 2.5 & 10 respectively for whichever dish diameters. A critical rim angle produces the non-uniformity factor. Results shows that optimization of rim angle is a significant contribution for decreasing the non-uniformity index of concentrator; it most valuable for coupled thermal and electricity generating applications.

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44

Sulaiman, Shaharin Anwar, and Farid Fawzy Fathy Taha. "Drying of Oil Palm Fronds Using Concentrated Solar Thermal Power." Applied Mechanics and Materials 699 (November 2014): 449–54. http://dx.doi.org/10.4028/www.scientific.net/amm.699.449.

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Malaysia has great potential for biomass stock. The fact that oil palm fronds contain high moisture content makes it unsuitable to be used directly as a biomass fuel neither for direct combustion nor gasification. Conventional and costly drying methods make the fronds a non-attractive fuel especially in humid tropical countries, where sources of biomass is abundant. A new solar dryer design is proposed that utilizes concentrated solar thermal energy for drying oil palm fronds. A prototype for the dryer has been fabricated and tested. The system’s target is to maximize the thermal energy received by the system and to minimize energy loss out of the system. Experiments were performed on samples of oil palm fronds at a drying temperature not exceeding 110°C; in order not to affect the organic material of the biomass. Results were compared with another experiment performed at the same temperature. An electric oven was used for drying. The samples were completely dried using the proposed system for 6.5 hours, compared to 10.5 hours by using the electric oven. The proposed system achieved an average drying rate of 4.75 g/hr compared to an average drying rate of 2.83 g/hr using the electric oven. The efficiency of the dryer was calculated to be 55.4%, implying good potential of the proposed system.

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45

Purohit, S., G. Brooks, M. A. Rhamdhani, and M. I. Pownceby. "Evaluation of concentrated solar thermal energy for iron ore agglomeration." Journal of Cleaner Production 317 (October 2021): 128313. http://dx.doi.org/10.1016/j.jclepro.2021.128313.

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46

Naik, Hardik, Prashant Baredar, and Anil Kumar. "Medium temperature application of concentrated solar thermal technology: Indian perspective." Renewable and Sustainable Energy Reviews 76 (September 2017): 369–78. http://dx.doi.org/10.1016/j.rser.2017.03.014.

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47

Cavallaro, Fausto. "Multi-criteria decision aid to assess concentrated solar thermal technologies." Renewable Energy 34, no. 7 (July 2009): 1678–85. http://dx.doi.org/10.1016/j.renene.2008.12.034.

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48

Weinmann, Oliver, Karl-Heinz Funken, Karl Friedrich Knoche, and Rudolf Sizmann. "Thermal recovery of waste sulfuric acid with concentrated solar radiation." Solar Energy Materials 24, no. 1-4 (December 1991): 674–82. http://dx.doi.org/10.1016/0165-1633(91)90100-y.

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49

Khan, Mahir, N. M. S. Hassan, and A. K. Azad. "Investigation of thermal energy storage systems in concentrated solar power." Energy Procedia 160 (February 2019): 738–45. http://dx.doi.org/10.1016/j.egypro.2019.02.185.

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50

Jaramillo, O. A., J. A. del Río, and G. Huelsz. "A thermal study of optical fibres transmitting concentrated solar energy." Journal of Physics D: Applied Physics 32, no. 9 (January 1, 1999): 1000–1005. http://dx.doi.org/10.1088/0022-3727/32/9/310.

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