Solar Compass最新文献_第3页

Review of agrivoltaic demonstration site studies with comparable configurations for a UK-based application 回顾在英国应用的具有可比配置的农业光伏示范站点研究

Solar Compass

Pub Date : 2025-07-02 DOI: 10.1016/j.solcom.2025.100135

Matt Birchall, Shanza Neda Hussain, Aritra Ghosh

Agrivoltaics is a renewable energy technology which has undergone rapid growth and development over recent years. The dual-land-use solution is considered a sustainable approach to the competing interests of agriculture and energy production. There are a growing number of published studies researching this field, generating evidence of the additional microclimatic benefits of agrivoltaics in reducing heat stress, increasing soil moisture content and enhancing biodiversity. Through the use of a unique sifting process, ten comparable studies are reviewed and explored in relation to a UK adoption strategy for agrivoltaics, comprising published articles on similar climatic conditions, solar irradiance, and agricultural crops. Additionally, the benefits of microclimate and economic aspects have been discussed, highlighting the protection provided to the vegetation due to the presence of photovoltaics while creating a favourable condition locally by regulating the conditions under PV. A scoring matrix was devised to facilitate evaluation based on comprehensiveness of analysis and the quality of information presented, ensuring alignment with the selection criteria established in this study. This matrix serves as a systematic guideline for assessing relevant literature on the topic that suggests the best approach. Simultaneously, a dual income benefit for farmers while achieving the solar target for the county. This review provides an overview of the UK context. It offers insight into how an agrivoltaic future might be realised and recommends key parameters of ‘best practice’ which should be considered when designing a UK based agrivoltaic test study.

农业发电是近年来发展迅速的一种可再生能源技术。双重土地利用解决办法被认为是解决农业和能源生产相互竞争利益的可持续办法。在这一领域发表的研究越来越多，证据表明农业发电在减少热应激、增加土壤含水量和增强生物多样性方面具有额外的小气候效益。通过使用独特的筛选过程，回顾和探讨了与英国农业光伏采用策略相关的十项可比研究，包括发表的关于类似气候条件，太阳辐照度和农作物的文章。此外，还讨论了小气候和经济方面的好处，强调了由于光伏发电的存在而为植被提供的保护，同时通过调节光伏发电的条件在当地创造有利条件。设计了一个评分矩阵，以促进基于分析的全面性和所提供信息的质量的评估，确保与本研究中建立的选择标准保持一致。这个矩阵作为一个系统的指导方针，用于评估有关建议最佳方法的主题的相关文献。同时，在实现该县太阳能目标的同时，农民获得了双重收入。这篇综述概述了英国的情况。它提供了如何实现农业光伏未来的见解，并推荐了在设计基于英国的农业光伏测试研究时应该考虑的“最佳实践”的关键参数。

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引用次数: 0

BIPV in India: Opportunities, challenges, and pathways for urban planning and smart cities 印度的BIPV：城市规划和智慧城市的机遇、挑战和路径

Solar Compass

Pub Date : 2025-07-01 DOI: 10.1016/j.solcom.2025.100133

Kedar Mehta , Ravita Lamba , Sunanda Sinha , Nand Kumar

As India urbanizes rapidly, sustainable energy solutions have become a priority to meet rising energy demands and mitigate environmental impacts. Building-Integrated Photovoltaics (BIPV) offer a promising approach to harness solar energy within urban infrastructure, transforming buildings into renewable energy assets. Unlike conventional rooftop PV systems, BIPV maximizes urban space utilization while enhancing architectural aesthetics and energy efficiency. However, the adoption of BIPV in India remains limited due to factors such as regulatory barriers, lack of standardized designs, and high initial costs. This study uses SWOT (Strengths, Weaknesses, Opportunities, Threats) and TOWS (Threats, Opportunities, Weaknesses, Strengths) analyses to assess the potential, opportunities, and challenges of BIPV in India’s urban planning. It then discusses policy implications and offers practical recommendations for implementation in Indian cities. Key findings of this study indicate that BIPV adoption in India can significantly contribute to urban sustainability by reducing carbon emissions, improving energy self-sufficiency, and lowering long-term operational costs. The SWOT and TOWS analysis reveal that while BIPV presents opportunities for smart urban integration, challenges such as high initial investments and lack of awareness must be addressed through targeted policies and incentives. Additionally, global case studies highlight successful BIPV implementations, providing valuable lessons for India’s urban planning strategies.

随着印度快速城市化，可持续能源解决方案已成为满足不断增长的能源需求和减轻环境影响的优先事项。建筑集成光伏（BIPV）提供了一种很有前途的方法来利用城市基础设施中的太阳能，将建筑物转变为可再生能源资产。与传统的屋顶光伏系统不同，BIPV在提高建筑美学和能源效率的同时最大限度地利用城市空间。然而，由于监管障碍、缺乏标准化设计和初始成本高等因素，印度对BIPV的采用仍然有限。本研究使用SWOT（优势、劣势、机会、威胁）和TOWS（威胁、机会、劣势、优势）分析来评估BIPV在印度城市规划中的潜力、机遇和挑战。然后讨论政策影响，并为印度城市的实施提供切实可行的建议。本研究的主要发现表明，印度采用BIPV可以通过减少碳排放、提高能源自给自足和降低长期运营成本来显著促进城市的可持续性。SWOT和TOWS分析显示，虽然BIPV为智慧城市整合提供了机会，但必须通过有针对性的政策和激励措施来解决初始投资高和意识缺乏等挑战。此外，全球案例研究强调了BIPV的成功实施，为印度的城市规划战略提供了宝贵的经验。

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引用次数: 0

Harvesting sun amplified: A comprehensive review of agrivoltaics and floatovoltaics with a focus on India's potential 收获阳光：对农业光伏和浮动光伏的全面回顾，重点关注印度的潜力

Solar Compass

Pub Date : 2025-06-15 DOI: 10.1016/j.solcom.2025.100132

Acquilin Medonna, Aritra Ghosh

Solar photovoltaics (PV) represent a sustainable, eco-friendly, and rapidly expanding source of renewable energy (RE), with applications ranging from ground-mounted systems to rooftop installations. However, large-scale PV deployment faces key challenges such as high land acquisition costs, elevated panel temperatures, and dust accumulation, all of which can hinder economic viability and energy efficiency. In response, two innovative concept: Floatovoltaics (FPV) and Agrivoltaics (APV) are gaining global traction as integrated solutions to these limitations. FPV systems are installed on water bodies such as reservoirs, lakes, and canals, where the surrounding water provides a natural cooling effect, enhancing panel efficiency and reducing thermal stress. They also contribute to reduced water evaporation and minimal land use. Conversely, APV systems combine agricultural activity with solar energy generation on the same plot of land. This dual-use approach not only improves land-use efficiency but can also create a cooler microclimate that benefits crop productivity. Both systems also exhibit significantly lower soiling rates compared to conventional ground-mounted PV.

This review presents a comprehensive analysis of FPV and APV technologies, with a specific focus on their potential deployment in India, a country with an estimated solar potential of 748 GWp and mounting pressures on land and food systems. The paper assesses suitable PV technologies, microclimatic impacts, environmental benefits, and economic outcomes associated with these systems. It further evaluates their scalability, investment requirements, and current barriers to implementation. Ultimately, the study highlights how FPV and APV can play a complementary and transformative role in India’s renewable energy roadmap, addressing the dual challenges of clean energy generation and sustainable land use. By tapping into underutilized water surfaces and agricultural landscapes, these systems offer promising pathways for balancing energy, food, and ecological needs in the face of climate change and population growth.

太阳能光伏（PV）代表了一种可持续的、环保的、快速发展的可再生能源（RE），其应用范围从地面安装系统到屋顶安装。然而，大规模光伏部署面临着一些关键挑战，如高昂的土地购置成本、面板温度升高和灰尘积聚，所有这些都可能阻碍经济可行性和能源效率。作为应对这些限制的综合解决方案，两个创新概念：浮动光伏（FPV）和农业光伏（APV）正获得全球的关注。FPV系统安装在水库、湖泊和运河等水体上，周围的水提供自然冷却效果，提高面板效率并减少热应力。它们还有助于减少水蒸发和尽量减少土地使用。相反，APV系统将同一块土地上的农业活动与太阳能发电结合起来。这种双重用途的方法不仅可以提高土地利用效率，而且还可以创造更凉爽的小气候，有利于作物生产力。与传统的地面安装PV相比，这两种系统的污染率也显著降低。本综述对FPV和APV技术进行了全面分析，特别侧重于它们在印度的潜在部署，印度的太阳能潜力估计为748 GWp，对土地和粮食系统的压力越来越大。本文评估了合适的光伏技术、与这些系统相关的小气候影响、环境效益和经济结果。它进一步评估它们的可伸缩性、投资需求和当前实现的障碍。最后，该研究强调了FPV和APV如何在印度可再生能源路线图中发挥互补和变革作用，解决清洁能源发电和可持续土地利用的双重挑战。通过利用未充分利用的水面和农业景观，这些系统为在气候变化和人口增长的情况下平衡能源、粮食和生态需求提供了有希望的途径。

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引用次数: 0

Effect of leakage current on the performance of a pc-Si PV cell using a 3-D model 泄漏电流对pc-Si光伏电池性能的影响

Solar Compass

Pub Date : 2025-06-06 DOI: 10.1016/j.solcom.2025.100131

Ramatou Saré , Edward Dodzi Amekah , Mamoudou Saria , Idrissa Sourabié , Emmanuel Wendsongré Ramdé , Martial Zoungrana , Issa Zerbo

This study examines the effect of electron losses on the performance of polycrystalline silicon photovoltaic (pc-Si PV) cells using a three-dimensional (3D) approach. Aging and degradation are identified as the primary causes of these losses, quantified by the intrinsic junction recombination velocity (Sf₀). The analysis focuses on the p-n junction, where carrier losses significantly influence key performance metrics such as power conversion efficiency (PCE) and shunt resistance (R_sh). Simulation results indicate that as Sf₀ increases from 0 to a threshold of 1.790 × 10⁴ cm/s, the PCE and R_sh decrease by approximately 20 % and 32 %, respectively. The study further demonstrates that a reduction in R_sh from 1272.20 Ω.cm² to 5.48 Ω.cm² significantly increases the shunt current density, rising from 0 mA/cm² to 53.59 mA/cm², indicating elevated leakage currents. This work highlights the critical role of electron losses in determining the efficiency and stability of pc-Si PV cells. By employing a 3-D approach, the study provides valuable intuition into degradation mechanisms and suggests pathways for improving PV cell performance and durability.

本研究采用三维（3D）方法研究了电子损失对多晶硅光伏电池（pc-Si PV）性能的影响。老化和退化被认为是这些损失的主要原因，通过本质结复合速度（Sf0）来量化。分析的重点是pn结，其中载流子损耗显著影响关键性能指标，如功率转换效率（PCE）和分流电阻（Rsh）。仿真结果表明，当Sf0从0增加到1.790 × 10⁴cm/s的阈值时，PCE和Rsh分别降低约20%和32%。该研究进一步表明，Rsh从1272.20 Ω降低。Cm²到5.48 Ω。cm²显著增加分流电流密度，从0 mA/cm²上升到53.59 mA/cm²，表明泄漏电流升高。这项工作强调了电子损失在决定pc-Si光伏电池的效率和稳定性中的关键作用。通过采用3d方法，该研究为降解机制提供了有价值的直觉，并提出了提高光伏电池性能和耐久性的途径。

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引用次数: 0

Experimental investigation on LiCl-KCOOH blend for enhancing hybrid liquid desiccant–vapour compression system performance LiCl-KCOOH共混物提高液体干燥剂-蒸汽压缩系统性能的实验研究

Solar Compass

Pub Date : 2025-05-27 DOI: 10.1016/j.solcom.2025.100129

Kashish Kumar , Gurubalan Annadurai , Alok Singh

Conventional vapour compression system (VCS) consumes a substantial amount of energy to maintain human thermal comfort, while its inability to control humidity precisely has led to the exploration of alternative cooling technologies. Among all alternative cooling technologies, the liquid desiccant system (LDS) has gained attention as an energy-efficient and sustainable solution offering precise humidity control. The performance of LDS is strongly influenced by the desiccant type, with desiccant blends demonstrating superior moisture absorption compared to single desiccants. Among these, a blend of lithium chloride (LiCl) and potassium formate (KCOOH) shows promising dehumidification performance with reduced corrosion potential, yet remains underexplored. This study investigates the optimal blend ratio of LiCl-KCOOH through experimental analysis within a hybrid liquid desiccant vapour compression (LDVC) system. The research compares the dehumidification performance of this blend against a pure LiCl solution, employing an optimal mixture design technique to develop empirical correlations for key performance parameters. These correlations were validated using analysis of variation (ANOVA) analysis. The influence of the liquid-to-gas (

L / G

) ratio on dehumidifier performance and the economic feasibility of the desiccant blend were also examined. Results reveal that the optimal blend comprises 37 % LiCl and 18 % KCOOH, enhancing the moisture removal rate (

\dot{MRR}

) and dehumidification effectiveness (

ε_{DEH}

) by approximately 12.3 % and 10.5 %, respectively, under hot and humid conditions. The primary contribution of this paper is the identification of the optimal desiccant blend composition of LiCl-KCOOH and the development of empirical models to evaluate the dehumidification performance of a hybrid LDVC system using this blend.

传统的蒸汽压缩系统（VCS）消耗大量的能量来维持人体的热舒适，而其无法精确控制湿度导致了替代冷却技术的探索。在所有替代冷却技术中，液体干燥剂系统（LDS）作为一种节能和可持续的解决方案，提供精确的湿度控制而受到关注。LDS的性能受到干燥剂类型的强烈影响，与单一干燥剂相比，干燥剂混合物表现出更好的吸湿性。其中，氯化锂（LiCl）和甲酸钾（KCOOH）的混合物显示出良好的除湿性能，降低了腐蚀电位，但仍未得到充分开发。本研究通过混合液体干燥剂蒸汽压缩（LDVC）系统的实验分析，探讨了LiCl-KCOOH的最佳混合比例。该研究将该混合物的除湿性能与纯LiCl溶液进行了比较，采用最佳混合物设计技术来开发关键性能参数的经验相关性。使用变异分析（ANOVA）分析验证了这些相关性。考察了液气比对除湿机性能的影响，以及该干燥剂共混物的经济可行性。结果表明，在高温和潮湿条件下，LiCl含量为37%，KCOOH含量为18%的最佳混合物，分别提高了12.3%和10.5%的除湿率（MRR˙）和除湿效率（εDEH）。本文的主要贡献是确定了LiCl-KCOOH的最佳干燥剂混合成分，并开发了经验模型来评估使用该混合物的混合LDVC系统的除湿性能。

{"title":"Experimental investigation on LiCl-KCOOH blend for enhancing hybrid liquid desiccant–vapour compression system performance","authors":"Kashish Kumar , Gurubalan Annadurai , Alok Singh","doi":"10.1016/j.solcom.2025.100129","DOIUrl":"10.1016/j.solcom.2025.100129","url":null,"abstract":"<div><div>Conventional vapour compression system (VCS) consumes a substantial amount of energy to maintain human thermal comfort, while its inability to control humidity precisely has led to the exploration of alternative cooling technologies. Among all alternative cooling technologies, the liquid desiccant system (LDS) has gained attention as an energy-efficient and sustainable solution offering precise humidity control. The performance of LDS is strongly influenced by the desiccant type, with desiccant blends demonstrating superior moisture absorption compared to single desiccants. Among these, a blend of lithium chloride (LiCl) and potassium formate (KCOOH) shows promising dehumidification performance with reduced corrosion potential, yet remains underexplored. This study investigates the optimal blend ratio of LiCl-KCOOH through experimental analysis within a hybrid liquid desiccant vapour compression (LDVC) system. The research compares the dehumidification performance of this blend against a pure LiCl solution, employing an optimal mixture design technique to develop empirical correlations for key performance parameters. These correlations were validated using analysis of variation (ANOVA) analysis. The influence of the liquid-to-gas (<span><math><mrow><mi>L</mi><mo>/</mo><mi>G</mi></mrow></math></span>) ratio on dehumidifier performance and the economic feasibility of the desiccant blend were also examined. Results reveal that the optimal blend comprises 37 % LiCl and 18 % KCOOH, enhancing the moisture removal rate (<span><math><mover><mtext>MRR</mtext><mi>˙</mi></mover></math></span>) and dehumidification effectiveness (<span><math><msub><mrow><mi>ε</mi></mrow><mtext>DEH</mtext></msub></math></span>) by approximately 12.3 % and 10.5 %, respectively, under hot and humid conditions. The primary contribution of this paper is the identification of the optimal desiccant blend composition of LiCl-KCOOH and the development of empirical models to evaluate the dehumidification performance of a hybrid LDVC system using this blend.</div></div>","PeriodicalId":101173,"journal":{"name":"Solar Compass","volume":"15 ","pages":"Article 100129"},"PeriodicalIF":0.0,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144240457","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Recent developments in solar-driven adsorption and humidification-dehumidification based hybrid desalination system: A state-of-the-art review 太阳能驱动吸附和加湿-除湿混合海水淡化系统的最新进展：最新进展综述

Solar Compass

Pub Date : 2025-05-19 DOI: 10.1016/j.solcom.2025.100125

Manish Sonkar, Yojitha Kanathala, B. Kiran Naik

Freshwater scarcity is a growing global challenge, emphasizing the need for advanced and sustainable desalination technologies. Adsorption desalination (ADS) and solar thermal humidification-dehumidification (HDH) systems are emerging as efficient, eco-friendly solutions. ADS utilizes low-grade thermal energy, operates with zero brine discharge, and has a water recovery ratio exceeding 80 %. Recent advancements in ADS include metal-organic frameworks such as composite adsorbents, which exhibit adsorption uptakes and significantly enhance performance compared to adsorbents. Raw silica gel (SG) and sodium polyacrylate (SP) are adsorbents, and SG/CaCl₂ and SP/CaCl₂ are composite adsorbent materials. Research indicates that composite adsorbents, such as SG/CaCl₂ and SP/CaCl₂, achieve the maximum specific cooling power, measured at 498.7 W/kg and 310 W/kg, respectively, compared to traditional raw or composite adsorbents in solar adsorption desalination systems. Employing raw silica gel within an ejector-integrated hybrid desalination system featuring heat recovery results in notable performance, including a gained output ratio of 2.76 and a specific daily water production (SDWP) of 83.1 m³/ton/day during June. Heat and mass recovery methods, such as pressure equalization and dual-stage evaporator-condenser configurations, have improved SDWP to ∼16 m³/ton/day and coefficient of performance (COP) to ∼0.87, reducing energy requirement. Results also reveal that with SP adsorbents, the hybrid system with heat recovery powered by solar energy (SE) and waste heat (WH) provides the cheapest desalinated water production costs (1.1 $/m³ for SE and 0.4 $/m³ for WH) among all systems. Solar thermal HDH systems are particularly effective for small-to-medium scale applications. Packing materials such as polypropylene and porous plastic balls in humidifiers and fin-tube heat exchangers in dehumidifiers enhances performance. Solar water heaters outperform air heaters due to water’s higher specific heat capacity, with optimized operating conditions achieving maximum efficiency. The freshwater production cost for a hybrid system (ADS+HDH based) using solar energy ranges between 1.4 and 2.24 ($/m³). This study integrates numerical insights from ADS and HDH systems, highlighting advancements in SDWP, COP, and cost efficiency. Future research should optimize adsorbent designs, reduce heat and mass transfer resistances, and develop low-regeneration temperature materials for sustainable and cost-effective freshwater production.

淡水短缺是一个日益严重的全球挑战，强调需要先进和可持续的海水淡化技术。吸附式海水淡化（ADS）和太阳能热加湿-除湿（HDH）系统正在成为高效、环保的解决方案。ADS利用低品位热能，运行时无卤水排放，水回收率超过80%。ADS的最新进展包括金属有机框架，如复合吸附剂，与吸附剂相比，它具有吸附作用，并显着提高了性能。原料硅胶（SG）和聚丙烯酸钠（SP）为吸附剂，SG/CaCl2和SP/CaCl2为复合吸附剂。研究表明，在太阳能吸附脱盐系统中，与传统原料吸附剂和复合吸附剂相比，SG/CaCl2和SP/CaCl2的比冷却功率最大，分别为498.7 W/kg和310 W/kg。在具有热回收功能的喷射器集成混合海水淡化系统中使用原始硅胶，性能显著，包括6月份获得的输出比为2.76，特定日产水量（SDWP）为83.1 m³/吨/天。热量和质量回收方法，如压力均衡和双级蒸发器-冷凝器配置，将SDWP提高到~ 16 m³/吨/天，性能系数（COP）提高到~ 0.87，降低了能源需求。结果还表明，在使用SP吸附剂的情况下，由太阳能（SE）和废热（WH）驱动的热回收混合系统的淡化水生产成本在所有系统中最便宜（SE为1.1美元/m3， WH为0.4美元/m3）。太阳能热HDH系统对中小型应用特别有效。加湿器采用聚丙烯、多孔塑料球等包装材料，除湿器采用翅片管式换热器等包装材料，提高性能。太阳能热水器的性能优于空气加热器，因为水的比热容更高，优化的操作条件实现最高效率。使用太阳能的混合系统（ADS+HDH）的淡水生产成本在1.4至2.24美元/立方米之间。该研究整合了ADS和HDH系统的数值见解，突出了SDWP、COP和成本效率方面的进步。未来的研究应优化吸附剂设计，减少传热传质阻力，开发低再生温度材料，以实现可持续和经济高效的淡水生产。

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引用次数: 0

Resistivity of crystalline silicon photovoltaic cell to the electromagnetic field effects 晶体硅光伏电池对电磁场效应的电阻率

Solar Compass

Pub Date : 2025-05-15 DOI: 10.1016/j.solcom.2025.100122

Adama Ouedraogo , Rodrigue Noaga Sawadogo , Boureima Dianda , Mahamadi Savadogo , Boubacar Soro , Thierry Sikoudouin Maurice Ky , Dieudonné Joseph Bathiebo , Sié Kam

This present paper studies a crystalline silicon PV cell’s resistance to electromagnetic field (EMF) effects. This study identifies an optimal doping range for silicon PV cells, enhancing their resistance to EMF damage. After solving key equations, we analyzed the cell’s electrical parameters and energy processes. The current slightly drops as the dopant level (

N_{B}

) increases from

1 0^{14} {cm}^{- 3}

to

1 0^{17} {cm}^{- 3}

. Meanwhile, the voltage rises sharply. Beyond

1 0^{17} {cm}^{- 3}

, the current plummets, while the voltage sees a slight increase. This behavior indicates the best EMF resistance occurs at

1 0^{17} {cm}^{- 3}

, aligning with the peak electric power at this doping level. The thermalization mechanism is not affected by the EMF and doping rate. However, the analyses of the thermodynamic process behavior and fill factor on the one hand. Conversely, the absorption mechanism reveals peak resistance to the EMF at

1 0^{17} {cm}^{- 3}

. Thus, doping with boron enhances the electromagnetic resistivity of crystalline silicon PV cells. This also improves control over Light-Induced Degradation (LID).

本文研究了晶体硅光伏电池的抗电磁场效应。本研究确定了硅光伏电池的最佳掺杂范围，提高了其对EMF损伤的抵抗能力。在解出关键方程后，我们分析了电池的电参数和能量过程。随着掺杂水平（NB）从1014cm−3增加到1017cm−3，电流略有下降。同时，电压急剧上升。超过1017cm−3，电流急剧下降，而电压略有增加。这种行为表明，最佳电动势电阻发生在1017cm−3，与掺杂水平的峰值电功率一致。热化机制不受电动势和掺杂率的影响。然而，一方面，热力学过程行为和填充因子的分析。相反，吸收机制在1017cm−3处显示出对EMF的峰值电阻。因此，掺杂硼提高了晶体硅PV电池的电磁电阻率。这也改善了对光诱导降解（LID）的控制。

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引用次数: 0

Nigeria’s renewable energy sector: analysis of the present and future prospects 尼日利亚的可再生能源部门：当前和未来前景分析

Solar Compass

Pub Date : 2025-04-28 DOI: 10.1016/j.solcom.2025.100123

UkoimaKelvin Nkalo

This paper provides an analysis of Nigeria's renewable energy (RE) sector, examining the present state, challenges, and future prospects. The study focuses on various RE sources. These include solar, hydropower, wind, and biomass, and discusses their potential for environmentally sustainable development and energy access. Key findings reveal considerable potential for solar energy, with installed capacity of approximately 112 MW and substantial off-grid solutions improving energy access for rural communities. Hydropower still remains a major RE source, with total capacity of 2,100 MW installed and promising potential for small and mini-hydropower initiatives. Wind energy potential is concentrated in the northern regions, with several pilot projects initiated. Biomass energy, derived from agricultural waste, holds considerable potential for electricity generation and rural development. The discussion highlights the need for infrastructure development, financing mechanisms, policy support, and technological innovations to overcome challenges and fully realize the potential of RE in Nigeria. The paper concludes with recommendations for sustainable development practices, regulatory frameworks, and capacity-building initiatives to encourage the growth of the RE sector.

本文对尼日利亚的可再生能源（RE）部门进行了分析，考察了现状、挑战和未来前景。该研究侧重于各种资源。其中包括太阳能、水电、风能和生物质能，并讨论了它们在环境可持续发展和能源获取方面的潜力。主要研究结果显示，太阳能的巨大潜力，装机容量约为112兆瓦，大量离网解决方案改善了农村社区的能源获取。水电仍然是一种主要的资源，已安装的总容量为2,100兆瓦，小型和微型水电倡议的潜力很大。风能潜力集中在北部地区，已经启动了几个试点项目。从农业废弃物中提取的生物质能在发电和农村发展方面具有相当大的潜力。讨论强调了基础设施建设、融资机制、政策支持和技术创新的必要性，以克服挑战，充分发挥可再生能源在尼日利亚的潜力。报告最后就可持续发展实践、监管框架和能力建设倡议提出了建议，以鼓励可再生能源部门的增长。

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引用次数: 0

Solar Powered Transcritical CO2 Cogeneration Plant for the Union Territory of Ladakh, India 印度拉达克联邦领土的太阳能跨临界二氧化碳热电厂

Solar Compass

Pub Date : 2025-04-28 DOI: 10.1016/j.solcom.2025.100124

Vivek Kumar, Khalid Parra, Uday Raj Singh, Satya Sekhar Bhogilla

The transcritical and supercritical CO₂ cycles have been gaining significant attention as alternative cycles for power generation. These cycles can be operated with diverse heat sources, such as nuclear, coal, and renewable heat sources, like solar energy. In this work, a concentrating solar power (CSP) plant is proposed as the heat source for the working fluid (CO₂) to exploit the high solar potential offered by the Ladakh UT. Chloride-based salt is proposed as the thermal energy storage (TES) media, which can help to achieve high turbine inlet temperatures (700°C), thereby improving thermal efficiency. The manuscript focuses on cogeneration to improve the overall system efficiency. In addition to power generation utilizing a simple recuperated tCO₂ Rankine Cycle, the high-temperature turbine exhaust is proposed to provide hot water for space heating using a fourth-generation district heating plant. Thermodynamic analysis of the system for a 10 MW capacity plant suggests a high overall efficiency of 49.75 % is attainable. An increase in the turbine-specific work is observed in the winter season as the ambient temperatures drop due to a reduction in the liquid saturation temperature of CO₂. Moreover, a district heating system in line with fourth-generation district heating is recommended, wherein low supply and return temperatures of water will further ensure efficient system performance.

跨临界和超临界CO2循环作为一种可替代的发电循环，已经引起了人们的广泛关注。这些循环可以使用多种热源，如核能、煤炭和可再生热源，如太阳能。在这项工作中，一个聚光太阳能发电厂（CSP）被提议作为工作流体（CO2）的热源，以利用拉达克UT提供的高太阳能潜力。提出氯基盐作为热能储存（TES）介质，可以帮助实现涡轮进口温度高（700℃），从而提高热效率。本文的重点是热电联产，以提高整体系统的效率。除了利用简单的tCO2回收朗肯循环发电外，高温涡轮废气还被提议使用第四代区域供热厂为空间供暖提供热水。对一个容量为10兆瓦的电厂进行的热力分析表明，该系统的总效率可达到49.75%。在冬季，由于二氧化碳的液体饱和温度降低，环境温度下降，因此可以观察到涡轮特定工作的增加。此外，建议采用符合第四代区域供热的区域供热系统，其中较低的供回水温度将进一步确保系统的高效性能。

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引用次数: 0

Suitability of natural composite desiccant assisted evaporative cooling for sustainable net zero energy green building 天然复合干燥剂辅助蒸发冷却在可持续零能耗绿色建筑中的适用性

Solar Compass

Pub Date : 2025-04-15 DOI: 10.1016/j.solcom.2025.100121

Harish Kumar U , Lakshmi Kanthan Bharathi A , Saravanan R , Kalaiselvam S

This paper investigates the adsorption capacity of the organic cow dung desiccant and its composites for application as a desiccant for desiccant dehumidification systems. The composite desiccants of cow dung with calcium chloride (CDC) and with silica gel (CDS) were prepared as a solution with Hydroxyethylcellulose and coated on a Wood Pulp Fiber Paper (WPFP) substrate and their adsorption ability was studied for different temperatures (25, 35 and 45 °C) and RH (75, 85 and 95 %). The desiccant bed of size 30 × 30 cm with desiccant CD, CDS, and CDC coated on the Wood Pulp fiber paper was prepared and subjected to dehumidification and regeneration. The dehumidification capacity (DC) and dehumidification coefficient of performance (DCOP) of the CD, CDC, and CDS composite desiccant beds were analyzed. The composite CDC performed better than others with a moisture uptake capacity of 0.643 g/g by reaching saturation in 80 min. CD, CDC, and CDS desiccants show faster regeneration within 30 min at the regeneration temperature of 80 °C. The CDC-coated Wood Pulp Fiber Paper performed better and the DCOP was maximum with a value of 2.52 at 50 °C regeneration temperature considering 50, 60, 70, and 80 °C.

研究了有机牛粪干燥剂及其复合材料在干燥剂除湿系统中的吸附性能。将牛粪-氯化钙(CDC) -硅胶（CDS）复合干燥剂与羟乙基纤维素配制成溶液，涂覆在木浆纤维纸（WPFP）底物上，研究了其在不同温度（25、35和45℃）和相对湿度（75、85和95%）下的吸附能力。在木浆纤维纸上涂布干燥剂CD、CDS、CDC，制备尺寸为30 × 30 cm的干燥剂床，进行除湿再生。分析了CD、CDC和CDS复合干燥剂床的除湿能力（DC）和除湿性能系数（DCOP）。CD、CDC和CDS干燥剂在80℃的再生温度下，在30 min内再生速度更快，吸湿量达到0.643 g/g。在50℃、60℃、70℃和80℃的再生温度下，涂布cdc的木浆纤维纸性能较好，DCOP最大，为2.52。

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引用次数: 0