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Apparent solid density and bulk density of IWB ceramic samples produced from heat-treated and untreated samples fired under static atmosphere, as a function of firing duration.
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This paper details the development process of ceramics made out of 100% electric arc furnace (EAF) steel slag, to be used as a shaped homogenous thermal energy storage (TES) media in packed-bed thermocline systems for high-temperatures industrial waste heat recovery, concentrated solar power (CSP), and Carnot batteries applications, among others. T...
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... this point, the parameters set were firing at 1300 • C under static air atmosphere and a shaping pressure of 300 MPa. The values tested for firing duration were 0.5, 2, 3, 4, 6, and 8 h at maximum temperature. Fig. 13 shows that the firing duration had a limited influence on apparent solid density of TCS, decreasing it slightly as firing duration increased. A reasonable explanation lies in the idea that a reduction in open porosity to the benefit of closed porosity results in a decrease of apparent solid density. Bulk densities of UCS and TCS ...
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Concentrated solar power (CSP) technologies are seen to be one of the most promising ways to generate electric power in coming decades. However, due to unstable and intermittent nature of solar energy availability, one of the key factors that determine the development of CSP technology is the integration of efficient and cost-effective thermal ener...
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... The system was installed and characterized at Khalifa University's Masdar Institute Solar Platform (KUMISP), a world-leading research, development and demonstration (RD&D) facility [33] that focuses on concentrated solar energy and energy storage fields. Several state-of-the-art concepts were tested and verified successfully at the KUMISP [37][38][39][40][41][42][43][44] in previous years. However, this project is its first demonstration of power-to-power systems. ...
[This article is accessible free of charge until May 12th 2024 following this link: https://authors.elsevier.com/a/1iooC,rUrFtsv4]
The development of electricity storage solutions is crucial to support the integration of variable renewable electricity sources in electricity systems. This study experimentally characterizes a state-of-the-art full-scale electrical thermal energy storage (ETES) system in outdoor conditions. The system integrates a 600 kWh th high-temperature latent heat storage module and a 13 kW e Stirling engine. The heat storage module uses an 88Al-12Si metallic alloy as the phase change material to store electricity converted to thermal energy by a resistive heater in charging mode. The Stirling engine uses hydrogen as the working fluid for re-electrification (discharging). The system uses liquid sodium as the heat transfer fluid between the latent heat storage module and both the charging (electrical heater) and discharging (engine) subsystems. Over the characterization period, the ETES prototype produced stable electricity at an average rate of 10.5 ± 1 kW for 13 consecutive hours daily with overall and power block first-law efficiencies of 23 % and 25 %, respectively. The effective storage utilization ratio varied between 0.58 and 0.94 depending on the discharge parameters. The response time was <5 s for output power regulation. The results highlight the potential of this latent heat thermal energy storage system to satisfy long-duration electricity storage applications and therefore contribute to the stabilization of electricity grids.
... This material was investigated using air as HTF for several repeated cycles [45], and it is suitable for TES applications in terms of cost, availability, and thermal properties. EAF steel slags [46,47], demolition wastes (DW) [48,49], ladle furnace slag, aluminum pot skimming and aluminum white dross [50], municipal solid waste incinerator (MSWI) bottom ash [51], and vitrified MSWI fly ash [52] are also recycled materials that have been analyzed and reported as a potential candidates for high temperature TES storage systems in CSP plants. ...
... Overview of Ceramic Materials. Ceramic material is a kind of inorganic nonmetallic material made by forming and sintering [15,16]. As an artificial synthetic material first manufactured and used by primitive humans, it has also made two major scientific and technological leaps along with human development [17]. ...
The manufacturing process of ceramic materials and exquisite patterns is not simply artistic acts. At the same time, it condensed the excellent traditional culture of ancient China. The application of ceramic materials in modern furniture can not only enhance the taste of living room culture but also show the charm of China’s ceramic culture. Objective. To optimize the scientific data model required by traditional ceramic materials. On the basis of image difference prediction calculation, the data of ceramic material color matching collection points were analyzed and processed, and the image difference prediction model was established. This paper introduces the application and development of ceramic materials in furniture industry. On the basis of the traditional image difference prediction algorithm, the consideration of image difference and difference prediction expansion is added, and the image difference prediction calculation model of ceramic material color matching is established. The survey results show that 83% of customers are very satisfied with the color matching of new ceramic materials calculated by image difference prediction. This experiment uses image difference prediction model to remove the redundant pixels of ceramic material color and make multiple judgments on color display. According to the initial color data of the collection points, this experiment finally obtained a new combination color matching of ceramic wardrobe, which is more suitable for the “minimalist” and “quiet” styles.
... 17 Tijekom oksidacije željeza i primjesa nastali oksidi prelaze u trosku koja može biti i koristan sporedni proizvod. [18][19][20][21][22][23] Troska nastaje i od drugih dodataka uloženih u proizvodne agregate (npr. vapno i dr.), erozije kao posljedice reakcije taline s vatrostalnom oblogom proizvodnog postrojenja itd. ...
Previous research has individually demonstrated the successful waste recycling of Municipal Incineration Bottom Ash (MIBA) and Electric Arc Furnace Slag (EAFS) for tile making. This study explored a new frontier of combining both MIBA and EAFS to produce quality floor and wall tiles. EAFS was introduced to reinforce strength and address the quality issues associated with MIBA tiles. Tile samples were formulated with different combinations of MIBA, EAFS, and clay, subjected to various kiln firing temperatures. Findings indicated that the inclusion of EAFS led to enhanced tile water absorption and bending strength, particularly at a firing temperature of 1150℃. The integration of EAFS played a pivotal role in consolidating tile structure, mitigating gas release, and reducing internal porosity during crystallization phase. Through the utilization of 30% MIBA and 3% EAFS, tiles that conform to class Ib standards were successfully manufactured. Additionally, the study highlighted that the addition of 9% EAFS alone could elevate the tiles to meet class Ia standards if no MIBA was added.
A growing number of industries depends on the availability of electricity to operate. Current energy levels have proven insignificant at handling the high levels of technological transformation, given the deterioration in available power in recent years. Hospitals, for example, play major roles in society and depend mostly on electricity. Changing to a more-reliably energy-generation system would have a big impact on human wellbeing. This study uses a cost–benefit tool to address the unreliability electricity in the health sector. The results showed a 78% positive transition to solar energy in the health sector while avoiding harmful effects.
Thermal energy storage (TES) is an enabling system that provides uninterrupted energy from concentrated solar power (CSP) plants. Packed‐bed TES systems have great opportunity to significantly enhance the cost‐effectiveness, efficiency, and sustainability of CSP plants by employing an affordable and sustainable packing material. The objective of this study is to design a demolition waste‐based packed bed TES system with a maximum storage capacity of 40 kWh, specifically tailored to store heat within the temperature range of 290°C to 565°C using solar salt as heat transfer fluid (HTF), thereby making it suitable for integration into CSP plants. Performance and thermal behavior of demolition waste‐based packed‐bed TES system was assessed through numerical analysis. The results demonstrate that a high discharging efficiency of 76.0% was achieved when the HTF flow rate was set at 100 kgh⁻¹. However, it is important to note that at lower HTF flow rate, heat loss increases, leading to a decrease in discharging efficiency to 70%. The experiment also revealed a uniform thermal gradient within the packed‐bed TES system, up to a fluid flow rate of 300 kgh⁻¹. It is worth mentioning that lower flow rates can further improve the stratification effect; however, they may also result in increased heat loss and reduced storage capacity. Based on these findings, an optimal flow rate range of 100 to 200 kgh⁻¹ is recommended to achieve the best performance for the packed‐bed TES system.
Ceramic materials are widely used in engineering field because of their good physical and chemical properties. The poor mechanical properties of traditional ceramics seriously limit the development of ceramic materials and have attracted extensive attention since its birth. The development of high toughness, light weight, and functional ceramic materials has long been the pursuit of materials scientists. Since ancient times, nature has been the source of all kinds of human technological ideas, engineering principles, and major inventions. The functional structure of biology provides a good research object for the bionic design and preparation of ceramic materials. Therefore, it is necessary to summarize the functional structures and mechanisms in nature and biomimetic preparation technology. The purpose of this review is to provide guidance for the functionalized biomimetic design and efficient preparation of ceramic materials. Some typical functional examples in nature are introduced in detail, and several representative biomimetic preparation methods are listed. Finally, the performance and application status of biomimetic ceramics are summarized, and the future development direction of biomimetic ceramic materials is prospected.
