Recent studies focus on aluminum metal melting and heat treatment processes using concentrated solar energy. This work is the first at sea level in Trabzon province, with a latitude of 41° and longitude of 39°, total solar radiation of 1394 kWh m−2-year, and sunshine duration of 2132 h-year.
The article reports the first-time calculation of the total thermal efficiency of 22% for the Aluminum Melting process. The mass flow rate is 0.0667 g s at this time. The convective heat transfer coefficient from the cavity aperture of the furnace is, W m−2 K −1. The radiation heat loss coefficient from the external surface of the furnace is, Wm−2 K −1.
Aluminum metal (660 °C) is melted with the single-focus parabolic dish concentrate system in a solar furnace. Zinc and lead metals melt faster than aluminum. Melting efficiencies for the different metals vary in the solar furnace.
An aluminum plate begins to melt in 5 minutes with a temperature of 660 °C. Fig. 8 illustrates the image of the melted aluminum plate in the existing furnace.
The temperature in a solar furnace with a parabolic dish is measured using a CEM DT-610B type digital thermometer with a K type thermocouple, which has an error rate of ±0.75% at 800 °C and can measure temperatures up to 1200 °C. The temperature at the focal point is measured by using an aluminum sample on the focal point.
Application of solar thermal energy to metallurgical processes
Concentrated solar thermal (CST) processing of minerals to produce metals has been shown to be technically feasible but has not yet been commercialized. Significant …
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Simplified energy-flow model schematic. | Download Scientific Diagram
In this paper, a novel solar-thermal system configuration is evaluated and optimised, where liquid sodium is boiled in a receiver and energy is stored through the melting and freezing of NaCl...
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The experi̇mental thermal analysis of aluminum metal melting with ...
The concentrated solar energy which is one of the renewable energy sources, is examined in metal melting which requires high temperatures. The study is carried out for the …
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Simplified energy-flow model schematic. | Download …
In this paper, a novel solar-thermal system configuration is evaluated and optimised, where liquid sodium is boiled in a receiver and energy is stored through the melting and freezing of NaCl...
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Modeling of Processes of Heating and Cooling of Materials in a Solar …
The processes of heating and melting of materials in a concentrated high-density solar flux at the Large Solar Furnace are studied. The possibilities of calculating the rate of heating and cooling of molten materials are shown using the example of pyroxene rocks exposed to concentrated solar radiation. The influence of the main ...
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The experi̇mental thermal analysis of aluminum metal melting with ...
The results obtained with this model show that for solar irradiation between 700 and 980 W m −2, concentration rate is 548 and the ambient temperature of 35 °C, thermal …
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Diagrams of possible functioning of the solar furnace: …
Download scientific diagram | Diagrams of possible functioning of the solar furnace: a) melting without holding a constant temperature; b) melting by holding at constant temperature (t c...
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PCM-Metal Foam Composite Systems for Solar Energy Storage
The use of metal foam structures embedded in PCM to form composite PCM-metal foam energy storage system can improve the effective thermal conductivity remarkably due to the high surface area for heat transfer between the metal foam and the PCM. This chapter presents a study of PCM-metal foam composite systems for solar energy storage. At first, a …
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Simplified energy-flow model schematic. | Download …
Download scientific diagram | Simplified energy-flow model schematic. from publication: A Sodium Boiler and Phase-Change Energy Storage System | A novel concentrating solar thermal power system is ...
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Modeling of Processes of Heating and Cooling of Materials in a …
The processes of heating and melting of materials in a concentrated high-density solar flux at the Large Solar Furnace are studied. The possibilities of calculating the …
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(PDF) Phase Change Materials (PCM) for Solar …
Solar energy is a renewable energy source that can be utilized for different applications in today''s world. The effective use of solar energy requires a storage medium that can facilitate the ...
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Solar Cell: Working Principle & Construction (Diagrams Included)
Key learnings: Solar Cell Definition: A solar cell (also known as a photovoltaic cell) is an electrical device that transforms light energy directly into electrical energy using the photovoltaic effect.; Working Principle: The working of solar cells involves light photons creating electron-hole pairs at the p-n junction, generating a voltage capable of driving a current across …
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(PDF) Assessment of Solar Energy Potential Limits within Solids on ...
The concentration of solar energy provides the possibility to get power densities high enough to produce surface modifications of materials, with low environmental impact. The present paper …
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Eco-efficient melting of glass frits by concentrated solar energy
Moreover, for evaluating the efficacy of concentrated solar radiation (CSE) for melting and homogenisation of molten fluids with different viscosity, the theoretical melting temperature (T m) for the studied compositions, was determined according to the Fluegeĺs Model for predicting the complete viscosity curve of glasses, by using polynomial functions for …
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Assessment of Solar Energy Potential Limits within Solids
The schematic representation of the installation that is used to melt a metallic material using solar energy. Steel or aluminum production needs very high quantities of …
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Assessment of Solar Energy Potential Limits within Solids
The schematic representation of the installation that is used to melt a metallic material using solar energy. Steel or aluminum production needs very high quantities of energy. This is usually given by electric power, natural gases, or conventional fuels. A solar furnace uses the energy given by solar radiation.
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Stabilization of molten salt materials using metal chlorides for solar …
The effect of a variety of metal-chlorides additions on the melting behavior and thermal stability of commercially available salts was investigated. Ternary salts comprised of KNO3, NaNO2, and ...
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Diagrams of possible functioning of the solar furnace: a) melting ...
Download scientific diagram | Diagrams of possible functioning of the solar furnace: a) melting without holding a constant temperature; b) melting by holding at constant temperature (t c...
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The experi̇mental thermal analysis of aluminum metal melting …
The results obtained with this model show that for solar irradiation between 700 and 980 W m −2, concentration rate is 548 and the ambient temperature of 35 °C, thermal efficiency of the system solar furnace is achieved 46% and the total melting efficiency of aluminum and lead metals is calculated 22% and 36% respectively.
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SOLAR FURNACE FOR SMALL SCALE METALLURGICAL APPLICATIONS
INTRODUCTION. The importance of trapping and utilizing the solar energy for various energy requirements is widely published and well conceived. The field of application of the solar energy for foundry and metallurgical uses has not received so much attention as the other established applications such as solar air conditioning, heating, etc., mainly because the idea …
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Solar Convective Furnace for Metals Processing | JOM
Metals processing operations, primarily soaking, heat treatment, and melting of metals are energy-intensive processes using fossil fuels, either directly or indirectly as …
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Application of solar thermal energy to metallurgical processes
Concentrated solar thermal (CST) processing of minerals to produce metals has been shown to be technically feasible but has not yet been commercialized. Significant developments have been made in improving the concentration of …
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Molten Salts for Sensible Thermal Energy Storage: A Review …
melting point of the liquid ... Meeker, D. High-temperature stability of tern ary nitrate molten salts for solar thermal energy systems . Sol. Energy . Mater. 1990, 21, 51–60, doi:10.1016/0165 ...
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Solar Convective Furnace for Metals Processing | JOM
Metals processing operations, primarily soaking, heat treatment, and melting of metals are energy-intensive processes using fossil fuels, either directly or indirectly as electricity, to operate furnaces at high temperatures. Use of concentrated solar energy as a source of heat could be a viable "green" option for industrial heat ...
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The configurations of metal melting. (a) ESH; (b) ISH; …
Tao et al. (2019) demonstrated that magnetically moving mesh-structured solar absorbers within a molten salt along the solar illumination path signifi cantly accelerate solar-thermal energy ...
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(PDF) Assessment of Solar Energy Potential Limits within Solids on ...
The concentration of solar energy provides the possibility to get power densities high enough to produce surface modifications of materials, with low environmental impact. The present paper discusses the possibilities of surface hardening steel by means of concentrated solar energy. Surface treatments have been made by using the solar furnace ...
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The Ultimate Guide to Understanding Solar Energy System Diagrams
Solar energy system diagrams are a valuable educational tool that can be used to teach students, homeowners, and professionals about the principles and components of solar energy systems. They help simplify complex concepts and provide a visual understanding of how solar energy is harnessed and utilized. System design and installation . When designing and installing solar …
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Experimental and numerical investigation of the melting process of ...
The melting behavior and heat transfer characteristics of solar salts during unconstrained melting with different constant wall temperatures and sphere sizes are …
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The experi̇mental thermal analysis of aluminum metal melting …
The concentrated solar energy which is one of the renewable energy sources, is examined in metal melting which requires high temperatures. The study is carried out for the first time in...
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Experimental and numerical investigation of the melting process …
The melting behavior and heat transfer characteristics of solar salts during unconstrained melting with different constant wall temperatures and sphere sizes are investigated, including the temperature field, flow field, melting front, heat transfer rate, and melting time.
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