Solar Energy最新文献_第7页

Experimental study on the performance of the photovoltaic thermal (PVT) connected in series with flat plate solar collector (ST) 与平板太阳能集热器（ST）串联的光伏热（PVT）性能实验研究

IF 6 2区工程技术

Solar Energy Pub Date : 2024-10-30 DOI: 10.1016/j.solener.2024.113010

Hayder Altharwanee, Francisco Jurado, David Vera

{"title":"Experimental study on the performance of the photovoltaic thermal (PVT) connected in series with flat plate solar collector (ST)","authors":"Hayder Altharwanee, Francisco Jurado, David Vera","doi":"10.1016/j.solener.2024.113010","DOIUrl":"10.1016/j.solener.2024.113010","url":null,"abstract":"<div><div>Integrating a photovoltaic thermal system (PVT) with a solar thermal system (ST) allows for the simultaneous achievement of two outcomes: an increase in thermal and electrical efficiency. This work is an experimental study that combines PVT and ST systems together (PVTST) to show how well they work in various weather conditions on four different days in January, February, March, and April. The results showed that the PVTST system raised the output hot water temperature more than the ST system alone. The four testing days recorded temperature differences of approximately (6.15, 6.65, 7.51, and 5.48) °C, respectively. The thermal efficiency of the PVTST system improved by an average of 24.8%, 18.2%, 22.3%, and 19.4%, as compared to the ST system on the four test days, respectively. Similarly, the exergy efficiency showed an average improvement of 7.98%, 7.45%, 7.82%, and 6.97%. The implementation of a PVT system resulted in an average improvement in electrical efficiency of 31.04%, 41.16%, 47.34%, and 11.55% compared to the traditional PV panel during the four selected days, respectively. According to the single room heating simulation results, both the PVTST and ST systems can efficiently heat a single room during the testing days of February, March, and April. However, in January, the ST system had a deficit of approximately 15.9%, whereas the PVTST system had a deficit of around 8.18%. The results indicate that the current PVTST system can meet approximately 61.4%, 79.4%, 77.3%, and 75% of the required hot water temperature on the tested days, respectively.</div></div>","PeriodicalId":428,"journal":{"name":"Solar Energy","volume":"283 ","pages":"Article 113010"},"PeriodicalIF":6.0,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142553754","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 and economic analysis of saw-tooth and photo-voltaic roof type greenhouse integrated with Earth air heat exchanger 与地球空气热交换器集成的锯齿形和光电屋顶型温室的热性能和经济性分析

IF 6 2区工程技术

Solar Energy Pub Date : 2024-10-30 DOI: 10.1016/j.solener.2024.113035

Samar Singhal, Ashwini Kumar Yadav, Ravi Prakash

{"title":"Thermal performance and economic analysis of saw-tooth and photo-voltaic roof type greenhouse integrated with Earth air heat exchanger","authors":"Samar Singhal, Ashwini Kumar Yadav, Ravi Prakash","doi":"10.1016/j.solener.2024.113035","DOIUrl":"10.1016/j.solener.2024.113035","url":null,"abstract":"<div><div>In the present study, comparison of single span saw-tooth and PV-roof type greenhouse assisted with Earth air heat exchanger (EAHE) was carried out for tropical climate based on thermal performance, sunlight availability, tomato crop yield and economical aspects. For natural circulation mode in summer, the average temperature at crop height, light illumination level and relative humidity inside sawtooth type greenhouse was 38.5 °C, 10,000 Lux and 30 % respectively. For PV-roof type greenhouse, the average temperature at crop height, light intensity and relative humidity was 40.2 °C, 8000 Lux and 28 % respectively. The sawtooth and PV-roof type greenhouse with EAHE assisted mist fogging was able to maintain inside temperature 10 °C and 12 °C below the ambient conditions respectively. The maximum coefficient of performance (COP) of EAHE was 2.52 in the afternoon hours. The conducive environment with indoor temperature below 35 °C, relative humidity between 60–70 %, sufficient light intensity levels above the light compensation point and duration of exposure of 8–10 h/day led to 32 % higher tomato yield from the saw-tooth and PV-roof type greenhouse compared to the outdoor conditions. The CFD simulations revealed that the presence of recirculation zones within the greenhouse played crucial role for the uniform temperature distribution. In these recirculation zonesair followed a circuitous route to the exit and ventilation rate was governed by the air residence time. The reduced incident solar radiation access to the soil for PV roof type greenhouse had created an environment that allowed better exploitation of the earth-to-ground heat exchanger. The discounted payback period for the saw-tooth type and PV roof type greenhouse with EAHE was 5.4 years and 5.2 years respectively. However, for a large-scale PV-roof greenhouse farm integrated with EAHE system, a more lucrative cost benefit analysis and improved payback period can be achieved.</div></div>","PeriodicalId":428,"journal":{"name":"Solar Energy","volume":"283 ","pages":"Article 113035"},"PeriodicalIF":6.0,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142553756","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

Long-wavelength infrared optical properties of polycrystalline silicon PV modules under clean and soiled conditions for thermography analysis 用于热成像分析的多晶硅光伏组件在清洁和脏污条件下的长波红外光学特性

IF 6 2区工程技术

Solar Energy Pub Date : 2024-10-30 DOI: 10.1016/j.solener.2024.113028

Flávia Aparecida Ferreira de Oliveira , Robert Gustavo Silva Pereira , Matheus Pereira Porto , Rafael Augusto Magalhães Ferreira

{"title":"Long-wavelength infrared optical properties of polycrystalline silicon PV modules under clean and soiled conditions for thermography analysis","authors":"Flávia Aparecida Ferreira de Oliveira , Robert Gustavo Silva Pereira , Matheus Pereira Porto , Rafael Augusto Magalhães Ferreira","doi":"10.1016/j.solener.2024.113028","DOIUrl":"10.1016/j.solener.2024.113028","url":null,"abstract":"<div><div>Despite advances in photovoltaic (PV) technologies, polycrystalline silicon (poly-Si) modules remain important in countries that have experienced significant solar growth over the past decade. Thermography is widely used for inspecting PV modules in large-scale solar parks, facilitating the detection of thermal faults. However, limitations such as viewing angle and soiling can affect measurements and decision-making processes. This study investigates the directional emissivity and reflectivity of a poly-Si module under clean and contaminated conditions, using both urban and mineral dirt. A custom experimental setup enabled thermographic inspections using a FLIR SC660 thermal camera across a range of viewing angles (0°to 70°) and temperatures (25 °C to 60 °C). The results demonstrate that emissivity decreases and reflectivity increases with larger viewing angles, with surface temperature exerting minimal impact. Soiling made the surface less reflective, with overall optical trends remaining consistent. These findings contribute to existing literature by addressing the gap in available data on the directional optical properties of poly-Si modules. The results have practical implications for thermal inspections, emphasizing the importance of viewing angles in data interpretation and suggesting adjustments to enhance the rigor of assessments. By providing experimentally derived optical property values, this study also supports the correct application of quantitative thermography in solar plant monitoring.</div></div>","PeriodicalId":428,"journal":{"name":"Solar Energy","volume":"284 ","pages":"Article 113028"},"PeriodicalIF":6.0,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142553918","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 solar photovoltaic plant siting in Liangshan Prefecture, China: A policy-integrated, multi-criteria spatial planning framework 中国凉山州太阳能光伏电站选址优化：政策整合、多标准空间规划框架

IF 6 2区工程技术

Solar Energy Pub Date : 2024-10-28 DOI: 10.1016/j.solener.2024.113012

Linnan Tang , Yu Liu , Yuchun Pan , Yanmin Ren , Lan Yao , Xiaolan Li

{"title":"Optimizing solar photovoltaic plant siting in Liangshan Prefecture, China: A policy-integrated, multi-criteria spatial planning framework","authors":"Linnan Tang , Yu Liu , Yuchun Pan , Yanmin Ren , Lan Yao , Xiaolan Li","doi":"10.1016/j.solener.2024.113012","DOIUrl":"10.1016/j.solener.2024.113012","url":null,"abstract":"<div><div>The development of solar photovoltaic (PV) energy is essential for China to meet its ’dual-carbon’ goals and shift towards cleaner energy sources. Site selection, a key early step, often neglects land spatial planning constraints and suffers from subjective decision-making ambiguity. This study introduces a novel framework for identifying optimal sites for PV plants within China’s spatial planning. Through two screening stages and three decision-making processes validated in Liangshan Prefecture (LS), where solar and hydro resources are abundant. Criteria such as orography, climate, economy, and hydro-solar complementarity are evaluated to determine PV land suitability. Utilizing the triangular fuzzy number TOPSIS method and GIS technology, the study identifies the desirable areas for PV installations (DAPs). The study highlights that 59.66% of LS’s land is unsuitable for PV, with the remaining areas classified as highly suitable (0.56%), moderately suitable (2.31%), suitable (3.94%), and weakly suitable (33.52%). The DAPs are predominantly located in Huili, Yanyuan, and Huidong counties, while areas like Dechang and Xichang show potential for hydro-solar complementarity. Above all, the methodology aims to improve PV solar power generation efficiency, support local spatial planning and deliver economic and environmental benefits.</div></div>","PeriodicalId":428,"journal":{"name":"Solar Energy","volume":"283 ","pages":"Article 113012"},"PeriodicalIF":6.0,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142533095","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

A systematic review on greenhouse type solar dryers 温室型太阳能干燥器系统综述

IF 6 2区工程技术

Solar Energy Pub Date : 2024-10-28 DOI: 10.1016/j.solener.2024.113021

Khikmatov Bekhzod Amonovich, Mirzaev Mirfayz Salimovich, Samiev Kamoliddin A’zamovich

{"title":"A systematic review on greenhouse type solar dryers","authors":"Khikmatov Bekhzod Amonovich, Mirzaev Mirfayz Salimovich, Samiev Kamoliddin A’zamovich","doi":"10.1016/j.solener.2024.113021","DOIUrl":"10.1016/j.solener.2024.113021","url":null,"abstract":"<div><div>Food and Agriculture Organization reports show that farmers today lose 35–45 percent of their crops during harvesting and transportation due to various reasons. One third of the food consumed is thrown away by people. Greenhouse gases released from these wastes make up about 10 % of the total greenhouse gases released into the atmosphere. If serious attention is not paid to this issue, serious problems such as shortage of high-quality food and high prices will cause more concern for humanity. Drying food products using solar dryers is considered as one of the alternative solutions to this problem. In addition, the use of renewable energy increases the possibilities of reducing dependence on energy obtained from fossil fuels. For this reason, there is a lot of research going on in the field of solar dryers today. In this work, scientific research and review articles conducted in the field of greenhouse type solar dryers for 2013–2023 were analyzed. Based on the PRISMA method, 100 of the 1675 articles were selected and included in this review. According to the analysis, it was found that the energy efficiency of greenhouse-type solar dryers is 11–73 %, and the energy efficiency of solar air collectors and biomass furnaces integrated into them is in the range of 45–81 % and 47–87 %. The lifetime of various greenhouse type solar dryers is between 4–35 years, their price is between 220–10659 USD and the payback period is between 0.3–11 years, embodied energy is 136–18302 kWh, and EPBT is in the range of 1.1–3.63 years.</div></div>","PeriodicalId":428,"journal":{"name":"Solar Energy","volume":"283 ","pages":"Article 113021"},"PeriodicalIF":6.0,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142533096","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

Current status and challenges in silver recovery from End-of-Life crystalline silicon solar photovoltaic panels 从报废晶体硅太阳能光伏电池板中回收银的现状与挑战

IF 6 2区工程技术

Solar Energy Pub Date : 2024-10-28 DOI: 10.1016/j.solener.2024.113027

Neha Balaji Jadhav, Omkar Gajare, Sarita Zele, Nivedita Gogate, Amrut Joshi

{"title":"Current status and challenges in silver recovery from End-of-Life crystalline silicon solar photovoltaic panels","authors":"Neha Balaji Jadhav, Omkar Gajare, Sarita Zele, Nivedita Gogate, Amrut Joshi","doi":"10.1016/j.solener.2024.113027","DOIUrl":"10.1016/j.solener.2024.113027","url":null,"abstract":"<div><div>The significant expansion of the solar energy industry over the past few decades has led to the deployment of large number of solar photovoltaic (PV) panels. As these panels approach their end of life (EoL), the cumulative waste is expected to grow exponentially. PV recycling has thus become an appealing prospect and many research studies have been carried out to reclaim valuable materials from waste solar panels. Despite these efforts, the recovery of silver (Ag), a crucial and valuable element in the PV modules, is often overlooked, due to its low concentration. Nonetheless, it is a fast depleting resource with limited natural ore deposits. The aim of this review is to present various methods developed for extracting Ag from EoL solar modules. We have compared various approaches used for Ag recovery from EoL solar panels in terms of their environmental and economic impact. Our evaluation indicates that it is impractical to consider Ag recovery procedure in isolation since it would affect module recycling as a whole. Optimising the complete module recycling operation with appropriate Ag recovery process will provide the necessary economic incentive and promote circular economy.</div></div>","PeriodicalId":428,"journal":{"name":"Solar Energy","volume":"283 ","pages":"Article 113027"},"PeriodicalIF":6.0,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142532443","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

Performance investigation of newly developed novel hemispherical solar dryer for sustainable food preservation: Comparative analysis with traditional methods 用于可持续食品保鲜的新开发新型半球形太阳能干燥器的性能研究：与传统方法的比较分析

IF 6 2区工程技术

Solar Energy Pub Date : 2024-10-28 DOI: 10.1016/j.solener.2024.113036

Yogesh D. Kokate , Prasad R. Baviskar , Sanjeev D. Suryawanshi

{"title":"Performance investigation of newly developed novel hemispherical solar dryer for sustainable food preservation: Comparative analysis with traditional methods","authors":"Yogesh D. Kokate , Prasad R. Baviskar , Sanjeev D. Suryawanshi","doi":"10.1016/j.solener.2024.113036","DOIUrl":"10.1016/j.solener.2024.113036","url":null,"abstract":"<div><div>To preserve the world’s food resources, drying agricultural products is crucial for prolonging their shelf life. A novel concept of 1.5 m hemispherical solar dryer surmounts the limitations of conventional dryers like long drying time, solar tracking, large space requirement etc. Trials were performed on Thomson grapes to convert into raisins. For the purpose of fair accuracy in comparison, experiments were conducted on hemispherical solar dryer (active and passive mode), traditional cabinet solar dryer as well as open sun drying (OSD) by maintaining the uniform test conditions. An average moisture removal rate of 0.1935096 kg/h was obtained in hemispherical dryer. The hemispherical solar dryer significantly reduced drying time for converging grapes into raisins to 13 days, compared to 18 days in a cabinet solar dryer and 19 days with OSD. The hemispherical dryer, through a gap, creates a greenhouse effect, reaching a 70.1 °C maximum temperature and an average of 60.7 °C at 796 W/m2 average solar energy. The hemispherical dryer attained a drying efficiency of 5.67 %. Six mathematical models were employed for hemispherical and cabinet dryers. Amongst these Two term and Wang & Singh models were found suitable for the experimental data and provided precise prediction of moisture ratio.</div></div>","PeriodicalId":428,"journal":{"name":"Solar Energy","volume":"283 ","pages":"Article 113036"},"PeriodicalIF":6.0,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142533143","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

Performance prediction and optimisation of even-lighting agrivoltaic systems with semi-transparent PV module in the tropical region 热带地区采用半透明光伏组件的均匀光照农业光伏系统的性能预测与优化

IF 6 2区工程技术

Solar Energy Pub Date : 2024-10-28 DOI: 10.1016/j.solener.2024.113013

Santi Apriani , Rizki A. Mangkuto , Adhitya Gandaryus Saputro , Edward C. Chow

{"title":"Performance prediction and optimisation of even-lighting agrivoltaic systems with semi-transparent PV module in the tropical region","authors":"Santi Apriani , Rizki A. Mangkuto , Adhitya Gandaryus Saputro , Edward C. Chow","doi":"10.1016/j.solener.2024.113013","DOIUrl":"10.1016/j.solener.2024.113013","url":null,"abstract":"<div><div>Agrivoltaic systems with conventional PV panels may cause a shading effect to the plants, particularly in the tropical region where the sun position around noon is always near the zenith. Agrivoltaic systems that can ensure sufficient and even lighting, such as the semi-transparent PV (STPV) module, are thus promising. However, simulation and optimisation studies in application of such system in the tropics are still rarely found in literature. This study therefore aims to predict and optimise the annual performance of an agrivoltaic system with STPV module, for the case of a tropical location. Modelling and simulation were conducted in <em>Rhinoceros</em>, considering various module heights, tilt angles, and orientations, to predict the photosynthetic photon flux density (PPFD). To determine the optimum PV module configuration, weighting factors were given to the annual average illuminance, uniformity, illuminance reduction due to shading, and energy yield. Monte Carlo simulation was run by assigning random numbers to each weighting factor. The design configuration that occurs optimum the most often was deemed the global optimum solution. Experiments were also carried out with bok choy (<em>Brassica rapa</em>) plants to observe the impact on the plant growth. Based on simulation, the optimum performance is achieved by the STPV module at 3 m high, 20° tilt angle, facing north. Based on experiments, the plant growths under the STPV and under no PV modules are not significantly different. Overall, this study provides a foundation for large-scale application and optimisation of agrivoltaic systems with STPV configuration.</div></div>","PeriodicalId":428,"journal":{"name":"Solar Energy","volume":"283 ","pages":"Article 113013"},"PeriodicalIF":6.0,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142533147","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

Design methodology and performance analysis of a novel cooling system for dense array CPV receivers 密集阵列 CPV 接收器新型冷却系统的设计方法和性能分析

IF 6 2区工程技术

Solar Energy Pub Date : 2024-10-25 DOI: 10.1016/j.solener.2024.113011

Alicia Crespo , Desideri Regany , Jérôme Barrau , Joan Ignasi Rosell

{"title":"Design methodology and performance analysis of a novel cooling system for dense array CPV receivers","authors":"Alicia Crespo , Desideri Regany , Jérôme Barrau , Joan Ignasi Rosell","doi":"10.1016/j.solener.2024.113011","DOIUrl":"10.1016/j.solener.2024.113011","url":null,"abstract":"<div><div>The electrical performance of a dense array concentrating photovoltaics (CPV) receiver is reduced by the increase of average temperature, and by a non-uniform temperature map due to a non-uniform illumination profile. This can be reversed by an effective cooling system that allows the CPV cells to operate at nominal temperatures, as well as by optimal cell control at electrical level. An analysis that considers the interdependence between thermal and electrical behavior is essential for obtaining realistic performance results. Hence, this study presents a methodology for analyzing the performance of a CPV receiver controlled with DC-DC converters which considers the interaction between thermal and electrical behavior. The methodology allows to optimize the design of a novel jet impingement cooling system used in the receiver. Additionally, the efficiency of three different sizes of CPV receivers cooled by two technologies, microchannels and jet impingement, are analyzed. The results show that maximum receiver efficiency did not coincide with the maximum heat extraction coefficient. The study confirmed that larger receiver sizes had lower efficiency due to the mismatch losses and resulted more efficient (0.6 %) using the proposed jet impingement cooling system compared to microchannels.</div></div>","PeriodicalId":428,"journal":{"name":"Solar Energy","volume":"283 ","pages":"Article 113011"},"PeriodicalIF":6.0,"publicationDate":"2024-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142533098","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

Optimization and performance assessment of Ag@SiO2 core–shell nanofluids for spectral splitting PV/T system: Theoretical and experiment analysis 用于光谱分光光伏/发电系统的 Ag@SiO2 核壳纳米流体的优化和性能评估：理论与实验分析

IF 6 2区工程技术

Solar Energy Pub Date : 2024-10-25 DOI: 10.1016/j.solener.2024.113030

Junhan Xu, Binghong Chen, Kunpeng Yuan, Jun Shu, Qiguo Yang

{"title":"Optimization and performance assessment of Ag@SiO2 core–shell nanofluids for spectral splitting PV/T system: Theoretical and experiment analysis","authors":"Junhan Xu, Binghong Chen, Kunpeng Yuan, Jun Shu, Qiguo Yang","doi":"10.1016/j.solener.2024.113030","DOIUrl":"10.1016/j.solener.2024.113030","url":null,"abstract":"<div><div>Ag@SiO<sub>2</sub> nanofluid is widely used in spectral splitting PV/T system. Its core–shell structure has great influence on the optical properties. In this work, we focus on the comprehensive analysis and structure optimization of Ag@SiO<sub>2</sub> nanofluid to achieve its optimal spectral performance. DDA method is used to predict the optical properties of Ag@SiO<sub>2</sub> nanofluid and an optimization model based on filter efficiency is proposed. The effect of the SiO<sub>2</sub> shell thickness and Ag core mass concentration is analyzed. It indicates that the spectral performance of Ag@SiO<sub>2</sub> nanofluid can be improved with SiO<sub>2</sub> shell thickness of 15–40 nm and Ag core mass concentration of 81–135 mg/L. To achieve the same theoretical merit function of 1.46, the usage of Ag mass can be reduced by 25/33/44/62 % with SiO<sub>2</sub> coating of 10/20/40/70 nm. The optimal structure to achieve the highest filter efficiency η of 37.8 % is with a shell thickness of 20 nm and a mass concentration of 113.9 mg/L. An indoor PV/T operation testing is conducted to verify the optimization results. The merit function of Ag-based nanofluids increases from 1.58 to 1.598 and a reduction in Ag usage of 17 % is achieved with a SiO<sub>2</sub> coating shell of 17.8 nm. Operation stability is also enhanced with no aggregation observed during the working cycle and 7-day static experiment.</div></div>","PeriodicalId":428,"journal":{"name":"Solar Energy","volume":"283 ","pages":"Article 113030"},"PeriodicalIF":6.0,"publicationDate":"2024-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142533099","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