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Analysis of the Potential of Solar Energy Development inSaudi Arabia
摘要： Saudi Arabia has been exploring the potential of renewable energy for many years. Saudi authorities, scientists, and researchers view the generation of renewable energy as a viable long-term energy strategy. Despite this, because Saudi Arabia is one of the leading oil producing nations and relies heavily on it as a form of energy and source of income, solar energy has not been given much serious consideration. However, it has become more and more evident that for the continuing prosperity of the nation and the inevitable gradual decline in long-term oil production, it is essential to explore and invest in alternative energy sources. The main objectives of this research are: i) to establish the potential of solar energy generation as a suitable, cost-effective alternative to petroleum products. ii) to establish the potential for maximizing renewable power generation to support the supply grid. This paper presents an examination of various economic and technological aspects of generating solar energy in Saudi Arabia. Using some existing data on the amount of solar radiation, a seasonal multiple linear forecasting method is used to generate forecasts for electric energy generation potential for 32 cities. Results of this research demonstrate the desirability and economic feasibility of installing solar panel farms and constructing distribution lines.
关键词： Quantitative Forecasting,Photovoltaic Generator,Renewable energy,Levelized Cost of Electricity (LCOE) generation model
更新于2025-09-09 09:28:46
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Mensura??o da capacidade absortiva: um estudo nas empresas brasileiras fabricantes de coletores solares
摘要： This article aims to assess the Brazilian manufacturers of solar panels based on their absorptive capacity (AC) of new technological knowledge and innovation resulting from the assimilation and transformation of this same knowledge, in order to manufacture air conditioning equipment sourcing energy from high performance solar panels. It is an article of great relevance, given the current situation of Brazilian electricity sector and the need for energy efficiency and the use of alternative sources of energy, specifically solar. The theoretical framework addresses the concepts on AC, as well as how to evaluate and measure them. A quantitative research was performed in order to evaluate the AC of these manufacturers, applying a diagnostic tool adapted to the reality of Brazilian companies. The results of this research concluded that these companies do not yet have mature AC for developing an innovative product, showing a higher tendency for the potential dimension of AC when compared to the realized dimension. This finding corroborates the prospects for future research and development projects if the surveyed companies strengthen their ability to promote interactions with other organizations devoted to that same purpose.
关键词： Electricity sector,Innovation,Absorptive capacity,Solar panels
更新于2025-09-09 09:28:46
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A synergistic heterostructured ZnO/BaTiO3 loaded carbon photoanode in photocatalytic fuel cell for degradation of Reactive Red 120 and electricity generation
摘要： Photocatalytic fuel cell (PFC) is considered as a sustainable green technology which could degrade organic pollutant and generate electricity simultaneously. A synergistic double-sided ZnO/BaTiO3 loaded carbon plate heterojunction photoanode was fabricated in different ratios by using simple ultrasonication and mixed-annealed method. The double-sided design of photoanode allowed the lights irradiated at both sides of the photoanode. The ferroelectricity fabricated photoanode was applied in a membraneless PFC with platinum-loaded carbon as the cathode. Results revealed that the photoanode with 1:1 ratio of BaTiO3 and ZnO exhibited a superior photocatalytic activity among all the photoanodes prepared in this study. The heterojunction of this photoanode was able to achieve up to a removal efficiency of 93.67 % with a maximum power density of 0.5284 μW cm-2 in 10 mg L-1 of Reactive Red 120 (RR120) without any supporting electrolyte. This photoanode was able to maintain at high performance after recycling 3 times. Over loading of ZnO above 50% on BaTiO3 could lead to deterioration of the performance of PFC due to the charge defects and light trapping ability. The interactions, interesting polarizations of the photocatalysts and proposed mechanism of the n-n type heterojunction in the photoanode of ZnO/BaTiO3 was also discussed.
关键词： Photocatalytic fuel cell,Degradation,Reusability,ZnO/BaTiO3 heterojunction,Electricity Generation
更新于2025-09-09 09:28:46
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AIP Conference Proceedings [Author(s) SolarPACES 2017: International Conference on Concentrating Solar Power and Chemical Energy Systems - Santiago, Chile (26–29 September 2017)] - Performance of a SUNDISC cycle CSP plant for off-grid baseload applications in Chile
摘要： The dual-receiver SUNDISC cycle has previously been shown to generate electricity at a lower levelized cost and more reliably than combined cycle CSP plants without the low-pressure receiver. The utilization of such a plant as the provider of baseload power to an off-grid consumer, for example a mine, in northern Chile is investigated. The chosen location in the Atacama desert has high solar radiation and reasonably low ambient temperatures, however, the high altitude causes a severe decrease in Brayton cycle power output. The plant is simulated to provide an almost constant power output throughout the year from the two power cycles. Plant configurations with practically no fuel co-firing reach the lowest levelized cost of electricity, 0.14 USD/(kWeh) based on a conservative cost model, at less than 800 h annual time of no power generation. If fuel-based operation is allowed during some of these hours, the plant operates throughout the 8760 h per year and generates electricity at less than 0.15 USD/(kWeh) with co-firing rates of less than 8%. All these cost figures are significantly lower than for an alternative baseload off-grid solution based on Diesel generators.
关键词： Chile,CSP plant,off-grid,Rankine cycle,Brayton cycle,thermal energy storage,SUNDISC cycle,levelized cost of electricity,baseload,solar energy
更新于2025-09-04 15:30:14
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AIP Conference Proceedings [Author(s) SolarPACES 2017: International Conference on Concentrating Solar Power and Chemical Energy Systems - Santiago, Chile (26–29 September 2017)] - Revisiting field layout designs for large STE tower plants
摘要： Solar Thermal Electricity (STE/CSP) Tower Plants suffer a reduction on the solar field efficiency when their size increases. As plant-size is an important driver for the reduction of generation costs of STE plants - due to the relative impact of the power block and the O&M costs - plant-size could be a big disadvantage for tower plants. To cope with this issue a new rationale is proposed for designing the new generation of large tower plants. This paper demonstrates the performance benefits of the multitower approach, with single storage and power block and with northern fields versus large surrounded type; all at different latitudes and different atmospheric transmittance conditions. Field sizes of 50 MW equivalent - for plants with medium storage - appears to be a kind of standard for locations with relatively clear atmosphere while, in hazy locations, smaller sizes around 30 MW should be preferred. Besides the efficiency advantages, standardizing the designs and making them modular could also contribute to reduction of soft costs for this technology. As the improvement achieved in the solar field seems to offset the investment of an additional but smaller tower and receiver, the multitower approach might lead to a certain cost reduction of STE tower plants.
关键词： field efficiency,CSP,multitower approach,STE,northern fields,Tower Plants,Solar Thermal Electricity,atmospheric transmittance
更新于2025-09-04 15:30:14
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Solar plant with short diffuser concept: Further improvement of numerical model by included influence of guide vane topology on shape and stability of gravitational vortex
摘要： An alternative renewable energy concept, i.e. the concept of a solar power plant with short diffuser (SPD), was numerically investigated by more advanced computational fluid dynamics (CFD) model. Developed model is characterized by a more sophisticated and streamlined guide vane topology. The main novelty of this work is conducted optimization of the guide vane topology, for a specific novel application related to the alternative renewable energy concept (SPD). Optimization involved determining the required guide vane topology using minimal number of geometry influencing parameters. The objective was to result in vortex genesis and stabilization with respect to the desired circumferential velocity and to minimize the required pressure potential that is necessary for stable operation of the SDP plant. Provided numerical investigation was necessary, and for sure a step forward towards consideration of the experimental plant (which will assume introduction of the turbines). It needs to be taken into account that we deal with complex flow structure that requires gradual numerical investigation, in order to be able to get detail insight in the various influences and processes that can strongly affect SPD operating parameters. The guide vane topology was altered to develop an SPD capable of establishing and maintaining a stable gravitational vortex in pressure ranges which resemble atmospheric vortex phenomena (feasible for development of a compact system, and with maximal velocities in chimney throat regions below 20 m s?1). The study outlines nine cases, each representing the altered guide vane design, where the best case is determined and compared with the available experimental data from other research groups. The comparison indicates that the numerical model, although quite simple, is accurate and robust in predicting the distribution of local velocity and pressure profiles and fit for implementation on wind turbines in order to determine the influence of the installed turbines on the vortex shape and stability in a future study. An important finding is that the swirl ratio can be manipulated by altering the guide vane shape, and it is independent of the Reynolds number (which will be important during the design phase since it can be used as a control strategy for vortex genesis and as a prevention of unintentional genesis regarding additional multiple vortices). The gained numerical results revealed specific operating conditions that will ensure a safer environment around the SPD and that will enable a carbon free electricity production.
关键词： Solar power plant,Numerical modelling,Carbon-free electricity production,Thermodynamics,Vortices,Solar energy
更新于2025-09-04 15:30:14