Journal of Solar Energy Engineering最新文献

Estimating UV-B, UV-Erithemic, and UV-A irradiances from global horizontal irradiance and MERRA-2 ozone column information 根据全球水平辐照度和 MERRA-2 臭氧柱信息估算紫外线-B、紫外线-E 和紫外线-A 的辐照度

Journal of Solar Energy Engineering Pub Date : 2024-08-09 DOI: 10.1115/1.4066202

A. Laguarda, Gonzalo Abal, Paola Russo, Aron Habte

{"title":"Estimating UV-B, UV-Erithemic, and UV-A irradiances from global horizontal irradiance and MERRA-2 ozone column information","authors":"A. Laguarda, Gonzalo Abal, Paola Russo, Aron Habte","doi":"10.1115/1.4066202","DOIUrl":"https://doi.org/10.1115/1.4066202","url":null,"abstract":"\u0000 The ground ultraviolet (UV) solar radiation is relevant due to its impacts on plastics degradation (mainly UVA) and on human health (UVB and erithemic UV, or UVE). UV ground measurements are not as ubiquitous as the relatively common global horizontal irradiance (GHI) measurements. Three simple models that estimate the UVA, UVB, and UVE components of solar irradiance from GHI and ozone column information are locally adjusted and validated. Five 1-minute datasets from three sites in southeastern South America and two in the United States are used for simultaneous solar irradiance and UV data. All sites correspond to temperate midlatitude regions. Simultaneous atmospheric total ozone column information is obtained from the reanalysis Modern-Era Retrospective analysis for Research and Applications (MERRA-2) database for each site. Aside from locally adjusted models, average models with a single set of coefficients are also evaluated. For instance, the best average model is able to estimate UVE with a typical uncertainty below 12% and mean biases between ±3%, relative to the average of the measurements. Similar results are reported for the UVB and UVA components. These results, which can be useful in regions with similar climate and geography, provide a simple way to estimate UV irradiance under all-sky conditions with known uncertainty. This is an alternative to global satellite-based UV estimates, which can have high uncertainties at specific locations. Because MERRA-2 information has a global coverage, when coupled with good satellite-based estimates for GHI, UV irradiances can be estimated by this method over a large territory.","PeriodicalId":502733,"journal":{"name":"Journal of Solar Energy Engineering","volume":"54 46","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141923596","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

Energetic and exergetic analysis of a double-pass tubular absorber for application in solar towers 应用于太阳能塔的双通道管式吸收器的能效和效费比分析

Journal of Solar Energy Engineering Pub Date : 2024-08-09 DOI: 10.1115/1.4066201

Hossein Ebadi, Antonio Cammi, L. Savoldi

{"title":"Energetic and exergetic analysis of a double-pass tubular absorber for application in solar towers","authors":"Hossein Ebadi, Antonio Cammi, L. Savoldi","doi":"10.1115/1.4066201","DOIUrl":"https://doi.org/10.1115/1.4066201","url":null,"abstract":"\u0000 The present research integrates the concept of double-pass (DP) flows with high-temperature solar receivers to introduce an innovative design aimed at minimizing heat losses and optimizing performance. The new DP system was developed using a tubular absorber derived from billboard solar tower technology and operated with air as the heat transfer medium. CFD models are developed based on an experimental campaign conducted at a solar furnace facility. The computational analyses indicated that employing the DP design instead of single-pass (SP) absorbers results in an average enhancement of energy and exergy efficiency by 35% and 225%, respectively, across all test conditions. However, this enhancement is accompanied by an average increase in pressure drop of ∼60%. The detailed exergy analysis also revealed the contribution of each term in the exergetic performance, identifying the exergy destruction between the sun and the absorber as the primary source, accounting for an average of ∼ 65% of the total inlet exergy for both SP and DP absorbers. Consequently, the DP presents itself as a promising alternative design for future solar tower configurations, offering improved Nu numbers up to ∼50% in air-based solar systems.","PeriodicalId":502733,"journal":{"name":"Journal of Solar Energy Engineering","volume":"37 7","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141922844","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

Thermal-Hydraulic Investigation of the Delta-Nabla Channel Arrangement in a Solar Collector 太阳能集热器中三角洲-纳布拉通道布置的热工水力研究

Journal of Solar Energy Engineering Pub Date : 2024-08-09 DOI: 10.1115/1.4066203

Hasnain Tariq, T. A. Cheema, Farooq Khan, Muhammad Mohib Ur Rehman, Muhammad Asif, C. W. Park

{"title":"Thermal-Hydraulic Investigation of the Delta-Nabla Channel Arrangement in a Solar Collector","authors":"Hasnain Tariq, T. A. Cheema, Farooq Khan, Muhammad Mohib Ur Rehman, Muhammad Asif, C. W. Park","doi":"10.1115/1.4066203","DOIUrl":"https://doi.org/10.1115/1.4066203","url":null,"abstract":"\u0000 A novel solar collector consisting of a delta-nabla configuration of flow channels is investigated in the present study. In the proposed design, triangular channels connected in series act as an absorber having more exposed area to the sunlight with an ability to store 21L of water inside it that serves as a sensible energy storage to mitigate the intermittency issues. At the stage of proof of concept, the effectiveness of the novel collector design is not known. Moreover, its performance comparison with the existing solar thermal collector configurations is yet to be explored. Hence, there is a need to develop a comprehensive numerical model that can be used as a design template to predict the performance of the proposed collector configuration in a range of climatic conditions. Therefore, the present study is an attempt to investigate the thermal-hydraulic performance of the proposed collector, transient numerical simulations are conducted. The results of the numerical study are used to calculate the derived parameters such as Nusselt number, heat losses and collector thermal efficiency by varying the water flow rate. The study shows that the heat transfer characteristics increase with increase in flow rate and collector can operate up to overall efficiencies of 29%, 52%, 58%, 61%, 59%, 64%, 63%, and 62% at flow rates ranging from 0.1 to 0.8 l/min in winter. Moreover, the numerical model has also predicted improved thermal performance of the proposed delta-nabla configurations when compared with a conventional solar collector design.","PeriodicalId":502733,"journal":{"name":"Journal of Solar Energy Engineering","volume":"3 11","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141921196","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

Special Issue on the 17th Annual International Conference on Energy Sustainability (ES2023) 第 17 届国际能源可持续发展年会（ES2023）特刊

Journal of Solar Energy Engineering Pub Date : 2024-08-09 DOI: 10.1115/1.4066195

J. Nicodemus, Justin Lapp, Luke J. Venstrom, Nesrin Ozalp

引用次数: 0

Modelling the Solar Cells Temperature and Power Output from PV Panels under Dusty Conditions 灰尘条件下太阳能电池的温度和光伏电池板的功率输出建模

Journal of Solar Energy Engineering Pub Date : 2024-07-23 DOI: 10.1115/1.4066051

M.S. Abd-Elhady, Ahmed Fazila Arun Rasith, H. Kandil, Tarek Khalil, Dirk Herbert Dahlhaus

{"title":"Modelling the Solar Cells Temperature and Power Output from PV Panels under Dusty Conditions","authors":"M.S. Abd-Elhady, Ahmed Fazila Arun Rasith, H. Kandil, Tarek Khalil, Dirk Herbert Dahlhaus","doi":"10.1115/1.4066051","DOIUrl":"https://doi.org/10.1115/1.4066051","url":null,"abstract":"\u0000 Almost all available power and temperature models of PV panels can only predict the power output and the cell temperature under clean conditions. The objective of this research is to study the effect of dust accumulation on the solar cells temperature as well as to model the solar cells temperature and the power output from PV panels under dusty conditions. An experimental setup has been developed in this study, which consists of a PV panel that contains two thermocouples embedded inside the panel, in order to measure the cells' temperatures. The cells temperatures, solar irradiance received by the panel and the power output from the panel have been measured for 5 consecutive weeks in Cairo, Egypt. The actual solar irradiance received by the cells, i.e. Gcell, was calculated using the power model of PV panels. Afterwards, the cell temperature was calculated based on the cells temperature model and the actual solar irradiance received by the cells. It has been found that the difference between the measured and the calculated cell temperature was not more than 3.71% during the time of experiments. Therefore, it can be concluded that the influence of dust on the power output as well as the cell temperature can be calculated using the power model and the cell temperature model under clean conditions, but the solar irradiance in these models should be replaced by the actual solar irradiance received by the cells, i.e. Gcell.","PeriodicalId":502733,"journal":{"name":"Journal of Solar Energy Engineering","volume":"134 32","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141811202","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

Review and Gap Analysis of Heliostat Components & Controls 对 Heliostat 组件和控制装置的审查和差距分析

Journal of Solar Energy Engineering Pub Date : 2024-07-16 DOI: 10.1115/1.4065976

Kenneth Armijo, Matt Muller, Daniel Tsvankin, D. Madden

{"title":"Review and Gap Analysis of Heliostat Components & Controls","authors":"Kenneth Armijo, Matt Muller, Daniel Tsvankin, D. Madden","doi":"10.1115/1.4065976","DOIUrl":"https://doi.org/10.1115/1.4065976","url":null,"abstract":"\u0000 This investigation provides a comprehensive literature review pertaining to heliostat components and controls as part of the U.S. Department of Energy (DOE), Heliostat Consortium (Heliocon) program. This work presents a detailed assessment of subcomponents, controls and wireless communications elements that comprise various designs of helisotats within concentrating solar power (CSP) installations. Additionally, this work also provides the results of an industry survey, intended to compliment the literature discussion, to provide a gap analysis of the primary technology and cost areas that need to be addressed to help improved to spur CSP bankability. Although the results of the study determined several key areas for development, three strategic areas identified were: 1. The use of advanced composite materials to replace a need for expensive steel within the structure and mirror substrate, 2. Employment of closed-loop controls for automated calibration, reduction of commissioning time and O&M hours, reduction of drive requirements, as well as overall cost reduction, and 3. The need for more Heliostat-centric codes and standards to facilitate engineering confidence in the development of new features, cost reductions, or other design iterations to be seamlessly introduced without optical performance problems.","PeriodicalId":502733,"journal":{"name":"Journal of Solar Energy Engineering","volume":"4 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141640602","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

Greenhouse gas mitigation potential through clean energy for cement production in India 印度水泥生产使用清洁能源的温室气体减排潜力

Journal of Solar Energy Engineering Pub Date : 2024-07-16 DOI: 10.1115/1.4065977

Niranjan Sahoo, Anil Kumar

引用次数: 0

LOW CONCENTRATING PHOTOVOLTAIC GEOMETRY FOR RETROFITTING ONTO EUROPEAN BUILDING STOCK 用于欧洲建筑改造的低聚光光伏几何结构

Journal of Solar Energy Engineering Pub Date : 2024-07-16 DOI: 10.1115/1.4065980

R. Parupudi, David Redpath, Harjit Singh, Mohammad Reza Jalali, Maria Kolokotroni

{"title":"LOW CONCENTRATING PHOTOVOLTAIC GEOMETRY FOR RETROFITTING ONTO EUROPEAN BUILDING STOCK","authors":"R. Parupudi, David Redpath, Harjit Singh, Mohammad Reza Jalali, Maria Kolokotroni","doi":"10.1115/1.4065980","DOIUrl":"https://doi.org/10.1115/1.4065980","url":null,"abstract":"\u0000 The most appropriate Low Concentrating Photovoltaic (LCPV) technology suitable for European buildings located in mid-high latitudes under both maritime and continental climatic conditions has been identified as the Asymmetric Compound Parabolic Concentrator (ACPC). To date there is no published experimental data at different latitudes on the long-term performance of these systems at these latitudes nor how location would modify the optical characteristics of deployed systems. Previous theoretical research by the authors has demonstrated the superiority of the ACPC with this additional work experimentally confirming the robustness of the design. To investigate how seasonal and locational variations affect their measured technical performance 2 identical ACPC-LCPVs were installed, instrumented and monitored at two different climatic locations (Uxbridge, UK, and Vevey, Switzerland) from May 2020 to September 2020. A valid comparative performance investigation characterizing two geometrically equivalent ACPC based LCPV systems using real-life experimental data collected is presented in this paper. Locations at higher latitudes experience greater transverse angles more frequently compared to locations nearer the equator making ACPC geometries more appropriate than symmetrical concentrator configurations for building retrofit. This is shown in this paper over a latitudinal expanse of 31.35° for 4 separate locations; Tessalit (20.19° N, 1.00° E; Mali), Timimoun (28.03° N, 1.65° E; Algeria), Uxbridge (51.54° N, 0.48° E, UK) and Vevey (46.6° N, 6.84° E, Switzerland).","PeriodicalId":502733,"journal":{"name":"Journal of Solar Energy Engineering","volume":"60 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141643548","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

MODELLING DEVELOPMENT OF A RECEIVER-REACTOR OF TYPE R2Mx FOR THERMOCHEMICAL WATER SPLITTING 用于热化学分水的 R2Mx 型接收器-反应器的模型开发

Journal of Solar Energy Engineering Pub Date : 2024-07-16 DOI: 10.1115/1.4065975

Estefania Vega Puga, S. Brendelberger, Anika Weber, Christian Sattler

{"title":"MODELLING DEVELOPMENT OF A RECEIVER-REACTOR OF TYPE R2Mx FOR THERMOCHEMICAL WATER SPLITTING","authors":"Estefania Vega Puga, S. Brendelberger, Anika Weber, Christian Sattler","doi":"10.1115/1.4065975","DOIUrl":"https://doi.org/10.1115/1.4065975","url":null,"abstract":"\u0000 This work reports on the development of a transient heat transfer model for a prototype reactor of type R2Mx for thermochemical water splitting by temperature and pressure swing of ceria. Key aspects of the R2Mx concept, which are also incorporated in the prototype design, include a movable monolithic redox structure combined with a linear transport system, a reduction reactor as well as a dedicated oxidation reactor. With the model, the operation of the prototype is simulated for consecutive water splitting cycles, in which ceria is reduced in a continuously heated reactor, oxidized in a separate oxidation reactor and transported in between the reaction zones. A 2D axisymmetric numerical model of the prototype reactor was developed in ANSYS Mechanical. The model includes heat transfer calculations in combination with an approximated simulation of the transport of the redox material during cyclic operation. It incorporates the chemical reaction by means of a modified heat capacity for ceria and accounts for internal radiation heat transfer inside the porous redox material by applying effective heat transfer properties. A parametric analysis has been undertaken to evaluate different modes of operation of the oxidation reactor. Model results are used to size the power demand of the reduction reactor and vacuum pump, to define durations of the process steps as well as to assess operational parameters with respect to achieved temperatures. Findings suggest that suitable operation of the prototype reactor involves reduction durations ranging from 8 to 10 minutes and oxidations of 6 to 10 minutes.","PeriodicalId":502733,"journal":{"name":"Journal of Solar Energy Engineering","volume":"58 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141643556","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

Pathways Towards Improving the Energy Efficiency of Residential Air – Conditioning Systems in Saudi Arabia 提高沙特阿拉伯住宅空调系统能源效率的途径

Journal of Solar Energy Engineering Pub Date : 2024-07-16 DOI: 10.1115/1.4065973

Abdulaziz M. Alotaibi, Taha K. Makhdoom, A. Alquaity

{"title":"Pathways Towards Improving the Energy Efficiency of Residential Air – Conditioning Systems in Saudi Arabia","authors":"Abdulaziz M. Alotaibi, Taha K. Makhdoom, A. Alquaity","doi":"10.1115/1.4065973","DOIUrl":"https://doi.org/10.1115/1.4065973","url":null,"abstract":"\u0000 In Saudi Arabia, the residential electricity consumption approaches 50%, primarily driven by air conditioners (AC). This study explores the potential energy savings and CO2 emission reductions up to 2030 through three scenarios: Business as Usual (BAU), Continuous Improvement Scenario (CIS), and Accelerated Improvement Scenario (AIS). BAU scenario assumes that the current Energy Efficiency Ratio (EER) of 11.8 BTU/Wh is maintained until 2030. CIS considers a 5% EER improvement in new AC stock every 2 or 5 years, while AIS assumes a 10% improvement in EER at the same intervals. Additionally, energy savings and emission reductions possible from varying adoption levels of a new refrigerant (R32) are estimated for three scenarios. Lastly, the CO2 emission reduction under each scenario is computed for two extreme cases of grid emission factor. BAU scenario predicts energy savings of up to 17.7 TWh in 2030 compared to 2020 energy consumption figures. AIS with 2 year intervals results in additional energy savings of 10.1 TWh in 2030 and cumulative energy savings of 37.1 TWh over a decade compared to the BAU scenario. Even CIS with 5 year intervals yields additional energy savings of 1.69 TWh in 2030 and 5.1 TWh cumulatively compared to the BAU scenario. In comparison, the introduction of the new refrigerant results in cumulative energy savings of 10.2 TWh in the best-case scenario. These findings emphasize the importance of enhancing the EER of residential AC systems as a priority in energy efficiency policy.","PeriodicalId":502733,"journal":{"name":"Journal of Solar Energy Engineering","volume":"9 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141644231","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