SolarPACES Conference Proceedings最新文献

Cobalt-Based Perovskites as Efficient Oxygen Exchange Redox Materials for Solar Thermochemical Application 用于太阳能热化学应用的高效氧交换氧化还原材料--钴基过氧化物

SolarPACES Conference Proceedings Pub Date : 2024-07-24 DOI: 10.52825/solarpaces.v2i.970

Liuqing Yang, Hui Liu, Jianan Hao, Junshe Zhang, Jinjia Wei

{"title":"Cobalt-Based Perovskites as Efficient Oxygen Exchange Redox Materials for Solar Thermochemical Application","authors":"Liuqing Yang, Hui Liu, Jianan Hao, Junshe Zhang, Jinjia Wei","doi":"10.52825/solarpaces.v2i.970","DOIUrl":"https://doi.org/10.52825/solarpaces.v2i.970","url":null,"abstract":"Solar thermochemical CO2 splitting (STCS) cycles provide the promising routes to generate renewable fuel, fuel precursors, or chemical feedstocks by the utilization of renewable resources like solar thermal energy and CO2 relating to current energy as well as climate change. Perovskites have been proposed as the potential oxygen exchange redox materials for the two-step STCS process due to their greater oxygen release and redox stability. Herein, the oxygen release and redox stability were investigated for the cobalt-based perovskites (SrCoO3-δ and SrCo0.9Zr0.1O3-δ) as the potential STCS candidates. Consequently, the XRD, FT-IR, and Raman confirmed the dual-phase perovskite constitutions of SrCo0.9Zr0.1O3-δ (i.e. SrCoO2.29 and SrZrO3) compared to SrCoO3-δ. The thermogravimetric analysis indicated the incorporation of Zr could facilitate the oxygen release and enhance the phase stability. The near-equilibrium lattice oxygen release and uptake at high temperatures could be observed through the redox performance of SrCo0.9Zr0.1O3-δ at different heating and cooling rates. The results are noteworthy and demonstrate the potential of Zr-enhanced cobalt-based perovskites as the oxygen exchange redox materials for practical solar thermochemical applications.","PeriodicalId":506238,"journal":{"name":"SolarPACES Conference Proceedings","volume":"10 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141806435","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

Cascade Latent Heat Storage for Solar Cooking Applications 用于太阳能烹饪应用的级联潜热储存器

SolarPACES Conference Proceedings Pub Date : 2024-07-24 DOI: 10.52825/solarpaces.v2i.796

Shubham Jain, K. R. Kumar, Dibakar Rakshit, B. Premachandran, K. S. Reddy

{"title":"Cascade Latent Heat Storage for Solar Cooking Applications","authors":"Shubham Jain, K. R. Kumar, Dibakar Rakshit, B. Premachandran, K. S. Reddy","doi":"10.52825/solarpaces.v2i.796","DOIUrl":"https://doi.org/10.52825/solarpaces.v2i.796","url":null,"abstract":"The present investigation explores the potential of multiple phase change material (PCM) based storage for real-time solar thermal applications. There are two types of storage configurations tested in this work for the simultaneous charging and discharging operation, i.e., single PCM-based NaNO3 storage and 2-stage cascade latent heat storage having NaNO3 and NaNO2 as the storage mediums in the consecutive stages. The storage is designed to achieve the end-use temperature condition of 513 K (the highest temperature required for cooking) with the latent thermal energy accumulation capacity of 1 MJ. The study envisages that instead of using a single PCM in the storage unit, 2-stage cascading of the PCMs can improve energy accumulation and retrieval in storage. After 8 hours of operation, none of the storage achieves the complete charging state. The energy accumulated in the NaNO3/NaNO2 cascade storage is found to be 2.6 times higher than the energy accumulated in the NaNO3 storage. NaNO3/NaNO2 storage achieves the desired constant outlet temperature of cold heat transfer fluid for chapati making (531 K) after 165 minutes of operation. At this moment, the latent energy accumulated in the NaNO3 and NaNO3/NaNO2 storage is observed as 35% and 14%, respectively","PeriodicalId":506238,"journal":{"name":"SolarPACES Conference Proceedings","volume":"40 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141807886","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

Reduced-Order Modeling of Indirect Fluidized-Bed Particle Receivers with Axial Dispersion 具有轴向弥散功能的间接流化床颗粒接收器的降序建模

SolarPACES Conference Proceedings Pub Date : 2024-07-24 DOI: 10.52825/solarpaces.v2i.899

Keaton J. Brewster, J. Fosheim, Federico Municchi, Winfred R. Arthur-Arhin, Gregory S. Jackson

{"title":"Reduced-Order Modeling of Indirect Fluidized-Bed Particle Receivers with Axial Dispersion","authors":"Keaton J. Brewster, J. Fosheim, Federico Municchi, Winfred R. Arthur-Arhin, Gregory S. Jackson","doi":"10.52825/solarpaces.v2i.899","DOIUrl":"https://doi.org/10.52825/solarpaces.v2i.899","url":null,"abstract":"Oxide particles present a heat transfer and thermal energy storage (TES) media for next-generation concentrating solar power (CSP) plants where the high-temperature particle TES can provide dispatchable solar power [1]. Transferring heat to flowing particles can be a challenge and bubbling fluidization is a promising method for increased heat transfer between the oxide particles and confining walls. Using experimentally calibrated correlations for particle-wall heat transfer coefficients [2], this study explores in a quasi-1D model of a narrow-channel counterflow fluidized bed how the high heat transfer coefficients from bubbling fluidization enable cavity-based indirect particle receivers. Particle-wall heat transfer coefficients exceeding 800 W m-2 K-1 support angled solar fluxes > 200 kW m-2 from high normal fluxes > 1200 kW m-2 with wall temperatures < 900 oC. Parametric studies identify how gas flows, solar fluxes, and receiver heights impact receiver solar efficiency for a CSP plant. These modeling studies provide a basis for the development of an indirect narrow-channel fluidized particle receiver that has the potential to operate at normal solar fluxes over 1000 kW m-2 and solar efficiencies above 85%.","PeriodicalId":506238,"journal":{"name":"SolarPACES Conference Proceedings","volume":"61 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141808223","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

Performance of a Prototype Heliostat Having a Twisting Mechanism to Maintain Focus Throughout the Day 具有扭转装置的原型螺旋升降器的性能，可全天保持注意力集中

SolarPACES Conference Proceedings Pub Date : 2024-07-24 DOI: 10.52825/solarpaces.v2i.953

Roger Angel, Nicholas Didato, Matthew Rademacher, Yiyang Huang

{"title":"Performance of a Prototype Heliostat Having a Twisting Mechanism to Maintain Focus Throughout the Day","authors":"Roger Angel, Nicholas Didato, Matthew Rademacher, Yiyang Huang","doi":"10.52825/solarpaces.v2i.953","DOIUrl":"https://doi.org/10.52825/solarpaces.v2i.953","url":null,"abstract":"A prototype heliostat has been designed and built with a rectangular reflector whose shape is altered automatically through the day, to maximize concentration at the receiver. The shape changes needed to form solar disc images, which give the highest possible concentration, can be realized by twisting the reflector from its corners, provided that a target-oriented, dual-axis mount is used. Then a cam mechanism connected to the second (cross) axis drive, turning with the angle of incident sunlight, may be used to twist the reflector as needed. \u0000Our prototype reflector comprises a single glass mirror, 2.4 m x 3.3 m, attached to a steel frame. Four diagonal back struts extend from the central mechanism out to the rectangular frame corners. The glass mirror of the prototype is attached to the steel frame by 58 screw actuators. Before twisting the frame, the glass shape is adjusted to the biconic shape needed to form a 1 m diameter disc image on a 113 m distant target when sunlight is incident at 60°. To form disc images over the full range of angles of incidence from 0° (normal incidence) to 70°, the struts push the corners up and down by up to 17 mm. A reflectometry metrology system has been used to set the 58 adjustment screws for the initial shape to an accuracy of ≤ 0.6 mrad, and to measure the accuracy of the different twisted shapes. The prototype will be tested at NSTTF early next year. ","PeriodicalId":506238,"journal":{"name":"SolarPACES Conference Proceedings","volume":"33 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141810108","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

Comparative Assessment of the Durability of Glass and Polymer Mirrors for Concentrated Solar Thermal Technologies 聚光太阳能热技术用玻璃和聚合物反射镜耐久性比较评估

SolarPACES Conference Proceedings Pub Date : 2024-07-24 DOI: 10.52825/solarpaces.v2i.929

Mounia Karim, Christopher Sansom, Peter King, Heather Almond, Z. Hussaini

引用次数: 0

Transcritical Cycles With CO2-based Mixtures for CSP Applications: An Overview of the SCARABEUS Findings 用于 CSP 应用的基于 CO2 的混合物的跨临界循环：SCARABEUS 研究结果概述

SolarPACES Conference Proceedings Pub Date : 2024-07-24 DOI: 10.52825/solarpaces.v2i.788

E. Morosini, P. Rodriguez de Arriba, Salma I. Salah, Viktoria Illyés, Xavier Guerif, Marco Ruggiero, G. Di Marcoberardino, G. Manzolini

引用次数: 0

Thermal Performance Assessment of a Novel Hybrid Reactor for Solar Thermochemical Processes 用于太阳能热化学过程的新型混合反应器的热性能评估

SolarPACES Conference Proceedings Pub Date : 2024-07-24 DOI: 10.52825/solarpaces.v2i.757

Atthawit Saengpradab, Jirayut Tathong, Hattakit Kongsrichay, S. Chuayboon, S. Abanades

{"title":"Thermal Performance Assessment of a Novel Hybrid Reactor for Solar Thermochemical Processes","authors":"Atthawit Saengpradab, Jirayut Tathong, Hattakit Kongsrichay, S. Chuayboon, S. Abanades","doi":"10.52825/solarpaces.v2i.757","DOIUrl":"https://doi.org/10.52825/solarpaces.v2i.757","url":null,"abstract":"Solar thermochemical conversion processes offer a promising pathway for converting sunlight into clean, sustainable, and carbon-neutral fuels. A solar chemical reactor is one of the most essential components that utilizes concentrated solar energy to drive chemical reactions. In this study, a novel hybrid solar reactor is designed, fabricated, and tested to assess its thermal performance for the purpose of studying the solar thermochemical conversion processes in Thailand for the first time. It was performed under different heating modes regarding solar heat and/or electrical heat, with the aim to support day-and-night operation and variations in solar radiation conditions. The reactor was experimentally tested under on-sun, off-sun, and hybrid conditions using air as a heat transfer fluid. As a result, with one kWth solar thermal power input absorbed, the solar reactor achieved high temperatures exceeding 500 °C from the hybrid system while the reactor absorption efficiency was found to be 4%. The reactor demonstrated the possibility and reliability of performing solar thermochemical conversion processes under day-and-night and unstable solar radiation conditions.","PeriodicalId":506238,"journal":{"name":"SolarPACES Conference Proceedings","volume":"25 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141808632","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 Energy Storage With Horizontal Thermocline Tank for Sludge Drying Application 污泥干化应用中的水平热压罐热能存储

SolarPACES Conference Proceedings Pub Date : 2024-07-24 DOI: 10.52825/solarpaces.v2i.948

Luca Imponenti, Ryan Shininger, Hank Price, Kyle Kattke

引用次数: 0

Flow Distribution in Molten Salt Receiver Panels at High Flux Gradients 高流量梯度下熔盐接收器面板中的流量分布

SolarPACES Conference Proceedings Pub Date : 2024-07-24 DOI: 10.52825/solarpaces.v2i.821

Christian Schwager, Jonas Schulte, Matthias Binder, C. T. Teixeira Boura, Ulf Herrmann

引用次数: 0

CSP Data: A Data Discovery Web Application of Commercial CSP Plants CSP 数据：商业 CSP 工厂数据发现网络应用程序

SolarPACES Conference Proceedings Pub Date : 2024-07-24 DOI: 10.52825/solarpaces.v2i.811

Javier Bonilla, Richard Thonig, J. Carballo, Johan Lilliestam, Diego-César Alarcón-Padilla, Eduardo Zarza

引用次数: 0