The integration of renewable energy into multi-energy complementary clean energy bases presents challenges in grid-source coordination, security, and stability. This study explores the role of pumped storage in addressing these challenges by enhancing renewable energy accommodation across five key areas: renewable energy development capacity, grid-integration security, voltage and reactive power enhancement, short-circuit capacity improvement, and energy delivery efficiency. A quantitative research methodology was employed, using data from a year-long (8,760 hours) simulation of renewable energy projects with pumped storage. The study confirms that pumped storage significantly enhances renewable energy development capacity (by more than fivefold of installed wind or photovoltaic energy), improves grid-integration security (accommodation increment exceeding 60%), optimizes voltage and reactive power, increases short-circuit capacity, and boosts energy delivery efficiency. These findings reinforce the role of pumped storage as a critical component in achieving large-scale renewable energy integration and carbon neutrality. Future research should explore additional storage technologies and regulatory frameworks to further refine energy storage strategies.
High-temperature thermal energy storage (TES) technologies play a crucial role in mitigating supply-demand imbalances in energy systems. This study investigates the heat release dynamics of an aluminum-silicon phase change material (PCM) within a novel shell-tube TES device through numerical simulation. The research examines the influence of inlet velocity and tube arrangement on solidification time, thermal power, and system utilization rates. Five hypotheses are tested, addressing the correlation between velocity and heat release power, the impact of tube configurations, and efficiency improvements from design modifications. Results indicate an inverse relationship between velocity and solidification time but a reduction in utilization rate. A nonlinear relationship is observed between velocity and thermal power, with an initial positive trend followed by diminishing returns. The five-row PCM arrangement outperforms the triple-row design, demonstrating enhanced heat transfer efficiency. Moreover, strategic design modifications yield notable efficiency improvements. While these findings provide valuable insights for optimizing TES performance, future experimental studies are recommended to validate the simulation results and explore broader operational parameters.
Low-carbon economic dispatch (LCED) is critical for transitioning power systems toward carbon neutrality. This paper explores the optimization of LCED in regional microgrids by integrating flexible load management strategies—load cutting, load shifting, load transfer, and demand response—alongside carbon trading mechanisms. A quantitative research approach is employed, utilizing data from microgrid projects between 2015 and 2023 to examine the relationships between flexible load strategies, operating costs, and emissions reduction. The findings confirm that load management strategies significantly enhance economic efficiency, cost savings, and sustainability. Additionally, the integration of carbon trading mechanisms further optimizes both environmental and economic performance. The study highlights the importance of strategic dispatch planning in microgrid sustainability and suggests future research directions focusing on broader financial instruments and regulatory frameworks.
The advancements in solar photovoltaic technology have played a crucial role in addressing the global demand for sustainable energy. This paper reviews the evolution of different types of solar cells, focusing on first-generation silicon-based cells, thin film and amorphous silicon technologies, dye-sensitized solar cells, and quantum dot solar cells. The study also explores the emerging trends in solar photovoltaic technology, highlighting their potential for improved efficiency, cost reduction, and environmental sustainability. Through a qualitative approach, this paper synthesizes existing literature, industry reports, and expert insights to analyze technological developments and future trends. Findings indicate that while advancements have led to higher efficiency and cost-effectiveness, challenges such as material stability, scalability, and environmental concerns persist. The study concludes that integrating nanotechnology and sustainable materials is a promising direction for future solar technologies, but further research is needed to enhance their real-world applicability.
The growing demand for sustainable packaging has led to innovative approaches utilizing agricultural waste. This study explores the production and assessment of natural wrapping paper derived from banana peel waste, enhanced with essential oils. The research examines the impact of essential oils—cinnamon, lemon, clove, and lime—on the chemical and physical properties of the paper. A quantitative methodology was employed, investigating pH stability, water content, grammage, and flexibility in comparison to commercial wrapping paper standards. Findings indicate that essential oil additives significantly improve chemical stability, physical strength, and consumer appeal. Additionally, alkalization and delignification processes enhance the integration of essential oils, further optimizing paper quality. Life cycle assessment highlights the environmental benefits of banana peel waste utilization, promoting sustainability in packaging materials. This study contributes to the advancement of eco-friendly alternatives by validating the effectiveness of agricultural waste in high-quality paper production. Future research should explore additional additives and conduct long-term environmental impact assessments to refine sustainable material innovations.