Solar Energy最新文献

筛选
英文 中文
Solar energy generation in three dimensions: The hexagonal pyramid
IF 6 2区 工程技术
Solar Energy Pub Date : 2025-03-18 DOI: 10.1016/j.solener.2025.113408
Bárbara Pisoni Bender Andrade , Antonio Carlos Bender Andrade , Daniel Pacheco Lacerda , Fabio Antonio Sartori Piran
{"title":"Solar energy generation in three dimensions: The hexagonal pyramid","authors":"Bárbara Pisoni Bender Andrade ,&nbsp;Antonio Carlos Bender Andrade ,&nbsp;Daniel Pacheco Lacerda ,&nbsp;Fabio Antonio Sartori Piran","doi":"10.1016/j.solener.2025.113408","DOIUrl":"10.1016/j.solener.2025.113408","url":null,"abstract":"<div><div>Photovoltaic (PV) panels serve as a standard solution for the collection of solar energy. The flat photovoltaic solar plate design has been the most adopted by the market for its ease of installation. However, this design faces limitations due to geometric constraints and the sun’s trajectory through the day. Inspiration was drawn from nature to overcome these limitations by utilizing the tridimensional hexagonal shape observed in honeycomb structures. The used approach aimed to explore a novel design that can reduce the constraints of flat PV panels while maximizing energy output. The unique 3D arrangement of the hexagonal pyramid enables the installation of mirrors inside to ease the reflection of photons and to increase energy production compared to flat panels. Furthermore, this design presents an opportunity to incorporate a water capture and heating system, thereby increasing the system’s overall usage.</div></div>","PeriodicalId":428,"journal":{"name":"Solar Energy","volume":"292 ","pages":"Article 113408"},"PeriodicalIF":6.0,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143654780","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Advancing photovoltaic thermal (PV/T) systems: Innovative cooling technique, thermal management, and future prospects
IF 6 2区 工程技术
Solar Energy Pub Date : 2025-03-18 DOI: 10.1016/j.solener.2025.113402
Hussein Togun , Ali Basem , Abdul Amir H. Kadhum , Azher M. Abed , Nirmalendu Biswas , Farhan Lafta Rashid , Radhi Abdullah Lawag , Hafiz Muhammad Ali , Hayder I. Mohammed , Dipak Kumar Mandal
{"title":"Advancing photovoltaic thermal (PV/T) systems: Innovative cooling technique, thermal management, and future prospects","authors":"Hussein Togun ,&nbsp;Ali Basem ,&nbsp;Abdul Amir H. Kadhum ,&nbsp;Azher M. Abed ,&nbsp;Nirmalendu Biswas ,&nbsp;Farhan Lafta Rashid ,&nbsp;Radhi Abdullah Lawag ,&nbsp;Hafiz Muhammad Ali ,&nbsp;Hayder I. Mohammed ,&nbsp;Dipak Kumar Mandal","doi":"10.1016/j.solener.2025.113402","DOIUrl":"10.1016/j.solener.2025.113402","url":null,"abstract":"<div><div>Photovoltaic/thermal (PV/T) systems serve a dual purpose by simultaneously generating electricity and thermal energy from solar radiation. However, their efficiency is hindered by excessive heat accumulation, reducing overall performance. This review explores advanced cooling strategies aimed at enhancing PV/T efficiency, encompassing both passive and active methods. Various techniques (such as air and liquid cooling, phase change materials (PCM), heat pipes, and hybrid approaches) are analyzed for their effectiveness in thermal regulation and energy optimization. The study delves into PV/T system fundamentals, thermal characteristics, and strategies for improving performance. It highlights recent advancements in hybrid cooling technologies, including the integration of nanofluids, fins, and PCM, and assesses their impact on system efficiency. Additionally, a comprehensive evaluation of life-cycle costs, feasibility, and existing challenges is provided, along with future perspectives on optimizing PV/T systems. By consolidating the latest innovations in PV/T cooling, this review offers valuable insights into strategies for improving system efficiency and expanding applications in sustainable energy. It highlights the importance of continued research and development to enhance performance and reduce costs, facilitating broader adoption of PV/T technology for global energy solutions.</div></div>","PeriodicalId":428,"journal":{"name":"Solar Energy","volume":"291 ","pages":"Article 113402"},"PeriodicalIF":6.0,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143643585","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Particle mechanics and mixture homogeneity in a demonstration reactor system for the indirect reduction of redox particles
IF 6 2区 工程技术
Solar Energy Pub Date : 2025-03-18 DOI: 10.1016/j.solener.2025.113403
Sebastian Richter , Johannes Grobbel , Stefan Brendelberger , Martin Roeb , Christian Sattler
{"title":"Particle mechanics and mixture homogeneity in a demonstration reactor system for the indirect reduction of redox particles","authors":"Sebastian Richter ,&nbsp;Johannes Grobbel ,&nbsp;Stefan Brendelberger ,&nbsp;Martin Roeb ,&nbsp;Christian Sattler","doi":"10.1016/j.solener.2025.113403","DOIUrl":"10.1016/j.solener.2025.113403","url":null,"abstract":"<div><div>Many studies on two-step solar-thermochemical redox cycles for fuel production consider a combined receiver–reactor to perform the concurrent sub-processes of radiation absorption and reaction, which implies process limitations and increased technical complexity. Designed to circumvent this, an indirect concept uses an inert <span><math><mrow><msub><mrow><mi>Al</mi></mrow><mrow><mn>2</mn></mrow></msub><msub><mrow><mi>O</mi></mrow><mrow><mn>3</mn></mrow></msub></mrow></math></span> particle cycle absorbing heat in a receiver and transferring it to the particulate <span><math><msub><mrow><mi>SrFeO</mi></mrow><mrow><mn>3</mn><mo>−</mo><mi>δ</mi></mrow></msub></math></span> redox material in a common reactor. This Particle Mix Reactor (PMR) has been experimentally demonstrated and is investigated here in terms of particle mechanics by both measurement and simulation. With a newly developed tool for experimental particle bed segmentation, the spatial distribution of mixture homogeneity could be determined. DEM simulations – beneficial for the representation of dissimilar particle types – require mechanical contact parameters, that were obtained via an adapted systematic calibration procedure. <span><math><mrow><msub><mrow><mi>Al</mi></mrow><mrow><mn>2</mn></mrow></msub><msub><mrow><mi>O</mi></mrow><mrow><mn>3</mn></mrow></msub></mrow></math></span> and <span><math><msub><mrow><mi>SrFeO</mi></mrow><mrow><mn>3</mn><mo>−</mo><mi>δ</mi></mrow></msub></math></span> particles clearly differ in their results for similar collisions, especially concerning the rolling friction coefficient and the coefficient of restitution. Experimental results were reproducible, and no effect of temperature on mixture homogeneity could be identified. A significant improvement potential of mixture quality was revealed, with <span><math><mrow><msub><mrow><mi>Al</mi></mrow><mrow><mn>2</mn></mrow></msub><msub><mrow><mi>O</mi></mrow><mrow><mn>3</mn></mrow></msub></mrow></math></span> to <span><math><msub><mrow><mi>SrFeO</mi></mrow><mrow><mn>3</mn><mo>−</mo><mi>δ</mi></mrow></msub></math></span> particle mass ratios of about 3.5 for the upmost bed layer and of about 0.5 for the lower ones. Simulation results are satisfactorily consistent with experimental results, both qualitatively for particle motion, and for mixture homogeneity at a mean deviation of 26%. This makes the simulation model valid for further design and optimization purposes and facilitates the subsequent analysis of simulated temperature results.</div></div>","PeriodicalId":428,"journal":{"name":"Solar Energy","volume":"292 ","pages":"Article 113403"},"PeriodicalIF":6.0,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143654779","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Drying kinetics, mathematical modelling and colour analysis of an indirect solar dryer with latent heat storage unit for cucumber drying
IF 6 2区 工程技术
Solar Energy Pub Date : 2025-03-17 DOI: 10.1016/j.solener.2025.113431
S. Madhankumar , D. Arunkumar , Ch Mohan Sumanth , Akhilesh Kumar Singh , M.N.V.S.A. Sivaram Kotha , L. Feroz Ali
{"title":"Drying kinetics, mathematical modelling and colour analysis of an indirect solar dryer with latent heat storage unit for cucumber drying","authors":"S. Madhankumar ,&nbsp;D. Arunkumar ,&nbsp;Ch Mohan Sumanth ,&nbsp;Akhilesh Kumar Singh ,&nbsp;M.N.V.S.A. Sivaram Kotha ,&nbsp;L. Feroz Ali","doi":"10.1016/j.solener.2025.113431","DOIUrl":"10.1016/j.solener.2025.113431","url":null,"abstract":"<div><div>The industrial drying sector predominantly relies on fossil fuels and electricity to generate hot air for food drying applications, it leads to climate change. As an alternative, solar energy has emerged for producing hot air. This study focuses on developing an Indirect Solar Dryer (ISD) system equipped with a Corrugated Absorber-plate Solar Collector (CASC) integrated with a Lauric acid-filled Latent Heat Storage (LHS) unit to enhance the effectiveness of the food dehydration process. The drying kinetics of cucumber slices were investigated using Open Sun Drying (OSD) and the ISD system with two distinct solar collector configurations: CASC without LHS unit (System 1) and CASC with LHS unit (System 2) under spring and summer conditions. ISD System 2 during the summer season demonstrated superior performance, reducing cucumber moisture content 10.78 % in 12 h, while OSD took 17 h. Mathematical modelling using twelve different drying kinetics models were conducted to predict the drying behaviours. The results showed that the Midilli and Kucuk model provided predictions with high accuracy for all ISD systems with R<sup>2</sup> value of &gt;99.5 %. The colour properties of cucumber were also assessed, with ISD system 2 during summer season resulting in minimal colour variation of 6.38, compared to other systems, which had colour parameters of 48.1 Lightness, −19.9 for intensity in red-green, and 21.3 for intensity in blue-yellow. Overall, the findings of this study highlight the effectiveness of the proposed ISD system 2 in dehydrating food items, offering a sustainable alternative to conventional methods.</div></div>","PeriodicalId":428,"journal":{"name":"Solar Energy","volume":"292 ","pages":"Article 113431"},"PeriodicalIF":6.0,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143637477","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Suitable transition temperature on thermo-adaptive reflectance for opaque facades: Influence of climate, solar orientation, and facade material
IF 6 2区 工程技术
Solar Energy Pub Date : 2025-03-16 DOI: 10.1016/j.solener.2025.113268
Rita Andrade Santos , Nuno Vieira Simões , José Dinis Silvestre , Inês Flores-Colen
{"title":"Suitable transition temperature on thermo-adaptive reflectance for opaque facades: Influence of climate, solar orientation, and facade material","authors":"Rita Andrade Santos ,&nbsp;Nuno Vieira Simões ,&nbsp;José Dinis Silvestre ,&nbsp;Inês Flores-Colen","doi":"10.1016/j.solener.2025.113268","DOIUrl":"10.1016/j.solener.2025.113268","url":null,"abstract":"<div><div>Thermo-adaptive reflectance (TAR) opaque facades change their solar reflectance in response to temperature variations. This behaviour can be optimised to improve indoor thermal comfort by tailoring the transition temperature (TT), i.e., the temperature in which the solar reflectance changes. The study aims to identify which factors influence the suitable transition temperature (STT), i.e., the transition temperature<!--> <!-->that enables achieving the lowest total degree hour, and the magnitude of the benefits of applying TAR concept to opaque facades. A 3D model was created to assess indoor thermal comfort by running dynamic thermal simulations. Resorting to the energy management system, the solar reflectance variation based on the external face’s temperature was possible, enabling thermo-adaptive reflectance emulation. A parametric study was conducted, considering three solar orientations, four density facade categories and four different climates. For each scenario, the STT for TAR on opaque facades was determined by considering the lowest total degree hour. Two multiple regression models were generated using the sample comprising the case studies in which the most STT was used. The entities (case studies) were characterized by variables covering the climate, facade solar orientation, material, and comfort subjects. The analysis identified climate as the primary influencing factor on the STT, followed by facade material and solar orientation. The impact of TAR on the relative total degree hours improvement was significantly influenced by the facade material, followed by climate. Concluding that TT prescription is mandatory for each facade, even within the same building, and that TAR concept application is not universal.</div></div>","PeriodicalId":428,"journal":{"name":"Solar Energy","volume":"291 ","pages":"Article 113268"},"PeriodicalIF":6.0,"publicationDate":"2025-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143636645","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effect of random microstructure of the film surface on daytime radiative cooling performance 薄膜表面的随机微观结构对日间辐射冷却性能的影响
IF 6 2区 工程技术
Solar Energy Pub Date : 2025-03-15 DOI: 10.1016/j.solener.2025.113434
Jingjing Li, Ruixiang Wang, Meibo Xing, Rongkai Wang
{"title":"Effect of random microstructure of the film surface on daytime radiative cooling performance","authors":"Jingjing Li,&nbsp;Ruixiang Wang,&nbsp;Meibo Xing,&nbsp;Rongkai Wang","doi":"10.1016/j.solener.2025.113434","DOIUrl":"10.1016/j.solener.2025.113434","url":null,"abstract":"<div><div>Radiative cooling film has been widely concerned due to its green energy-saving, low-carbon, and environmentally friendly features. Its surface morphology greatly influences radiative cooling performance. However, traditional morphology designs are cumbersome and costly to prepare limiting the widespread application. In this study, the polydimethylsiloxane (PDMS) radiative cooling film with random microstructure surfaces was investigated experimentally and numerically. The simulation results show that the optical properties of the film surface are optimized when the random microstructure root mean square (RMS) roughness is 3 μm and the correlation length (CL) is 6 μm. Moreover, radiative cooling films with random microstructure surfaces were prepared by simple template reprinting with different roughness, and their effectiveness on silicon solar cell cooling was verified by indoor or outdoor experiments. Specifically, the film surface was selected for subsequent radiative cooling experiments by polishing the substrate and reprinting the random microstructure with 500 mesh sandpaper. The results demonstrated that the random microstructure of the film surface was capable of cooling the bare silicon solar cell by 6.6℃ and increasing the power generation efficiency by 44 % under the standard solar light in indoor experiments. For outdoor experiments, a cooling of 2.40 °C has been demonstrated. Moreover, the random microstructure of the film surface displays the potential for cooling another material, including copper, aluminum and glass. Under sunny weather, temperature reductions of 2.12, 2.28, and 0.18 °C were observed, respectively.</div></div>","PeriodicalId":428,"journal":{"name":"Solar Energy","volume":"292 ","pages":"Article 113434"},"PeriodicalIF":6.0,"publicationDate":"2025-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143629016","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Formation analysis of cooling load from envelopes under air-conditioning intermittent operation
IF 6 2区 工程技术
Solar Energy Pub Date : 2025-03-15 DOI: 10.1016/j.solener.2025.113428
Yifan Guan, Chenxi Hu, Xi Meng
{"title":"Formation analysis of cooling load from envelopes under air-conditioning intermittent operation","authors":"Yifan Guan,&nbsp;Chenxi Hu,&nbsp;Xi Meng","doi":"10.1016/j.solener.2025.113428","DOIUrl":"10.1016/j.solener.2025.113428","url":null,"abstract":"<div><div>Air-conditioning intermittent operation is commonly employed in office buildings due to occupancy regulations. However, existing research on intermittent operation has mainly focused on individual walls or rooms, with limited investigation into cooling load formation from a whole-building perspective, which is crucial for enhancing energy efficiency in both interior and exterior envelopes. Therefore, this study constructed three representative office buildings and conducted numerical simulation to analyze the formation of cooling load within these buildings. The results demonstrated that optimizing the envelope while considering air-conditioning intermittent operation could significantly reduce the cooling load of the building, including the cooling load of the exterior wall, interior wall and floor slab by 25.57 %, 17.92 %–30.81 % and 58.85 %, respectively. The cooling load of the three office buildings studied can be reduced by 31.98 %–35.11 %, with interior walls and floor slabs contributing up to 82.28 %–89.53 %. This study provides valuable insights into future building design and energy-efficient retrofitting of existing buildings and identifies substantial energy-saving potential.</div></div>","PeriodicalId":428,"journal":{"name":"Solar Energy","volume":"292 ","pages":"Article 113428"},"PeriodicalIF":6.0,"publicationDate":"2025-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143629018","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Cobalt oxide particles embedded in carbon nitride nanosheets for enhanced photocatalytic performance
IF 6 2区 工程技术
Solar Energy Pub Date : 2025-03-14 DOI: 10.1016/j.solener.2025.113424
Yining Lu , Pingan Zhang , Feifei Tao , Pengfei Liang , Jingjing Xu
{"title":"Cobalt oxide particles embedded in carbon nitride nanosheets for enhanced photocatalytic performance","authors":"Yining Lu ,&nbsp;Pingan Zhang ,&nbsp;Feifei Tao ,&nbsp;Pengfei Liang ,&nbsp;Jingjing Xu","doi":"10.1016/j.solener.2025.113424","DOIUrl":"10.1016/j.solener.2025.113424","url":null,"abstract":"<div><div>Effective removal of organic pollutions and efficient conversion of carbon dioxide (CO<sub>2</sub>) under illumination still pose challenges at present. Herein, carbon nitride (g-C<sub>3</sub>N<sub>4</sub>) nanosheets were successfully fabricated via high temperature calcination with melamine as raw material. As a typical p-type semiconductor, cobalt oxide (CoO) particles with the sphere-like morphology were embedded in g-C<sub>3</sub>N<sub>4</sub> nanosheets to construct the g-C<sub>3</sub>N<sub>4</sub>/CoO composites via impregnation and thermal polymerization. High dispersion of CoO particles into g-C<sub>3</sub>N<sub>4</sub> matrix effectively prohibits their agglomeration, which can gain larger specific surface area, greatly surpassing that of their components. Furthermore, the well coupled interface between components was successfully constructed to improve charge separation and transfer via p-n junction. The above benefits endow g-C<sub>3</sub>N<sub>4</sub>/CoO composites with the excellent photocatalytic activity of methyl orange (MO) degradation and CO<sub>2</sub> reduction, remarkably superior to g-C<sub>3</sub>N<sub>4</sub> and CoO. The successful preparation of g-C<sub>3</sub>N<sub>4</sub>/CoO p-n heterojunctions may be a general and beneficial approach to constructing the visible-light-responsive photocatalytic materials.</div></div>","PeriodicalId":428,"journal":{"name":"Solar Energy","volume":"292 ","pages":"Article 113424"},"PeriodicalIF":6.0,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143629017","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Optimizing the efficiency of InxGa1-xN/GaN quantum well solar cells using piezo-phototronic effects: The impact of external strain
IF 6 2区 工程技术
Solar Energy Pub Date : 2025-03-14 DOI: 10.1016/j.solener.2025.113425
Hamza Bousdra , Noureddine Ben Afkir , Jaafar Meziane , Mimoun Zazoui
{"title":"Optimizing the efficiency of InxGa1-xN/GaN quantum well solar cells using piezo-phototronic effects: The impact of external strain","authors":"Hamza Bousdra ,&nbsp;Noureddine Ben Afkir ,&nbsp;Jaafar Meziane ,&nbsp;Mimoun Zazoui","doi":"10.1016/j.solener.2025.113425","DOIUrl":"10.1016/j.solener.2025.113425","url":null,"abstract":"<div><div>This work explores the efficiency enhancement of <span><math><mrow><msub><mrow><mi>I</mi><mi>n</mi></mrow><mi>x</mi></msub><msub><mrow><mi>G</mi><mi>a</mi></mrow><mrow><mn>1</mn><mo>-</mo><mi>x</mi></mrow></msub><mi>N</mi><mo>/</mo><mi>G</mi><mi>a</mi><mi>N</mi></mrow></math></span> multiple quantum well (MQW) solar cells through the application of piezo-phototronic effect, which modifies piezoelectric polarization charges at interfaces to raise efficiency. We investigated the impact of external strain on the performance of these solar cells to address the problem of lattice mismatch and its effect on energy conversion efficiency. Using a numerical computational model, our approach involves examining the effects of external strain on the electrical, optical, and band structure properties of the cells. The results showed a notable improvement in energy conversion efficiency with increases of 29.35 % and 21.28 %, respectively, for indium compositions of 0.2 and 0.35. Additionally, the photocurrent density increased from 1.61 mA/cm<sup>2</sup> to 2.43 mA/cm<sup>2</sup> and from 4.44 mA/cm<sup>2</sup> to 5.83 mA/cm<sup>2</sup> for both compositions. Band energy realignment calculations clarify that this enhancement is due to the correction of piezoelectric charges caused by lattice mismatch strain. Our findings show that the piezo-phototronic effect can be used to optimize <span><math><mrow><msub><mrow><mi>I</mi><mi>n</mi></mrow><mi>x</mi></msub><msub><mrow><mi>G</mi><mi>a</mi></mrow><mrow><mn>1</mn><mo>-</mo><mi>x</mi></mrow></msub><mi>N</mi><mo>/</mo><mi>G</mi><mi>a</mi><mi>N</mi></mrow></math></span> MQW solar cells, provide a viable means of increasing the use of solar energy and developing solar technology.</div></div>","PeriodicalId":428,"journal":{"name":"Solar Energy","volume":"291 ","pages":"Article 113425"},"PeriodicalIF":6.0,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143621316","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Thermal performance in latent heat thermal energy storage with annular heat source using different shape fins 使用不同形状翅片的环形热源潜热热能储存器的热性能
IF 6 2区 工程技术
Solar Energy Pub Date : 2025-03-14 DOI: 10.1016/j.solener.2025.113397
Xiangqiang Kong, Wanke Hou, Xichun Miao, Yijian Zhang, Ying Li, Jianbo Li
{"title":"Thermal performance in latent heat thermal energy storage with annular heat source using different shape fins","authors":"Xiangqiang Kong,&nbsp;Wanke Hou,&nbsp;Xichun Miao,&nbsp;Yijian Zhang,&nbsp;Ying Li,&nbsp;Jianbo Li","doi":"10.1016/j.solener.2025.113397","DOIUrl":"10.1016/j.solener.2025.113397","url":null,"abstract":"<div><div>For a latent heat thermal energy storage (LHTES) unit, its heat transfer performance can be significantly enhanced by increasing the fin surface. The LHTES unit with an annular heat source (AHS) is proposed for different shape fins and structural parameters. A corresponding numerical simulation has been conducted. The results show that pipe diameter ratio <em>γ</em> has the greatest influence on the heat transfer power <em>Φ</em>, followed by the outer and inner fin type in the charging and discharging processes. The increase of <em>γ</em> from 0.55 to 0.7 leads to <em>t</em><sub>c</sub> decreasing by 62.65%, the charging power <em>Φ</em><sub>c</sub> increasing by 153.68%, and the wall-average Nusselt number Nu<sub>c</sub> in the charging process increasing by 45.47%. Furthermore, an optimal <em>γ</em> of 0.625 is identified for the discharging process, resulting in −29.61%, 38.27%, and 20.2% changes in <em>t</em><sub>d</sub>, the discharging power <em>Φ</em><sub>d</sub>, and the wall-average Nusselt number Nu<sub>d</sub> in the discharging process compared to <em>γ</em> of 0.55. Bifurcation angle <em>θ</em> significantly influences <em>t</em><sub>c</sub> and <em>t</em><sub>d</sub>. The optimal <em>θ</em> for the charging process is 60°, reducing <em>t</em><sub>c</sub> by 40.7% compared to that of 180°. For the discharging process, the optimal <em>θ</em> is 90°, reducing <em>t</em><sub>d</sub> by 8.81%. The number of branches <em>n</em> significantly impacts heat transfer by influencing heat conduction. For the charging process, increasing <em>n</em> from 4 to 14 results in −45.39%, 81.78%, and −39.67% changes in <em>t</em><sub>c</sub>, <em>Φ</em><sub>c</sub>, and Nu<sub>c</sub>, respectively, while during the discharging process, it leads to changes of −31.91%, 45.48%, and −25.91% in <em>t</em><sub>d</sub>, <em>Φ</em><sub>d</sub>, and Nu<sub>d</sub>, respectively.</div></div>","PeriodicalId":428,"journal":{"name":"Solar Energy","volume":"291 ","pages":"Article 113397"},"PeriodicalIF":6.0,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143628756","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信