SolarPACES Conference Proceedings最新文献_第2页

On-Sun Alignment of a Concentrated Solar Parabolic Dish Located in Abu Dhabi, UAE 位于阿联酋阿布扎比的聚光抛物面太阳能碟片的日面对准情况

SolarPACES Conference Proceedings Pub Date : 2024-07-24 DOI: 10.52825/solarpaces.v2i.932

Muhammad Abdullah, Brenda Hernández Corona, Mathieu Martins, Nicolas Lopez Ferber, Nicolas Calvet

{"title":"On-Sun Alignment of a Concentrated Solar Parabolic Dish Located in Abu Dhabi, UAE","authors":"Muhammad Abdullah, Brenda Hernández Corona, Mathieu Martins, Nicolas Lopez Ferber, Nicolas Calvet","doi":"10.52825/solarpaces.v2i.932","DOIUrl":"https://doi.org/10.52825/solarpaces.v2i.932","url":null,"abstract":"Improper alignment is one of the key parameters that affect the performance of a concentrated solar parabolic dish (SPD). The receiver must have a flux distribution that is as uniform as feasible for an SPD to operate at its optimum performance. The aim of this research is to align a SPD from ZED Solar [1], which is recently installed at Khalifa University's Masdar Institute Solar Platform in Abu Dhabi, United Arab Emirates. This dish's future application involves integration with a photo-electrochemical hydrogen production reactor, which demands a multi-aimpoint alignment approach for optimal performance. To facilitate this alignment, the sunspots of all facets are initially aligned within a 200 mm diameter circle around the focal point using the on-sun alignment method. During the alignment, the dish was placed in sun-tracking mode, with all facets covered except the one being aligned. The reflection of the facet on the target was observed using a camera. The facet was adjusted until the aimpoint was oriented in the optimal position. The average time to align one facet, including cleaning, loosening the front nuts, and replacing the covers, was found to be around 15 minutes. The complexity of the bolt mounts, rust on the bolts, and the use of a manlift contributed to the prolonged alignment process. Despite these challenges, the on-sun alignment method proved to be an accurate way of aligning the facets of a concentrated SPD.","PeriodicalId":506238,"journal":{"name":"SolarPACES Conference Proceedings","volume":"63 13","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141809147","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

Experimental Demonstration of a Solar Powered High Temperature Latent Heat Storage Prototype 太阳能高温潜热存储原型的实验演示

SolarPACES Conference Proceedings Pub Date : 2024-07-24 DOI: 10.52825/solarpaces.v2i.968

Asem Alemam, Nicolas Lopez Ferber, Tommy Malm, Valérie Eveloy, Nicolas Calvet

{"title":"Experimental Demonstration of a Solar Powered High Temperature Latent Heat Storage Prototype","authors":"Asem Alemam, Nicolas Lopez Ferber, Tommy Malm, Valérie Eveloy, Nicolas Calvet","doi":"10.52825/solarpaces.v2i.968","DOIUrl":"https://doi.org/10.52825/solarpaces.v2i.968","url":null,"abstract":"The challenge of imbalances between renewable energy supply and grid demand underscores the significance of energy storage in microgrids. This research presents an empirical assessment of the operational capabilities of a full-scale Electrical Thermal Energy Storage (ETES) prototype system named Thermal Energy Storage Power On Demand (TES.POD®), in solar-abundant and harsh desert conditions. The system incorporates a high-temperature commercial-scale latent heat thermal energy storage, integrated with a Stirling engine. Over a continuous span of 10 days, from September 26th to October 6th, 2022, the input and output power, as well as the heat transfer fluid temperatures during charging and discharging were monitored to assess the power block and system efficiencies. Results from the experiments reveal that this prototype effectively maintains a near-constant electricity production rate of 10.5 ± 1 kW for a discharge duration of 13 hours. Average cycle efficiency stands at 23%, while power block efficiency reaches 25%. These findings collectively suggest the system's potential for applications involving long duration thermal energy storage.","PeriodicalId":506238,"journal":{"name":"SolarPACES Conference Proceedings","volume":"41 8","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141807081","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

Development, Construction, Operation and Maintenance of Shouhang Dunhuang 100 MW Molten Salt Solar Power Tower Plant 开发、建设、运营和维护首航敦煌 100 兆瓦熔盐太阳能塔式发电厂

SolarPACES Conference Proceedings Pub Date : 2024-07-24 DOI: 10.52825/solarpaces.v2i.771

Wenbo Huang, Jun Xiao, Fuguo Liu, Zhipeng Qi

引用次数: 0

5G as Communication Platform for Solar Tower Plants 5G 作为太阳能塔发电厂的通信平台

SolarPACES Conference Proceedings Pub Date : 2024-07-24 DOI: 10.52825/solarpaces.v2i.858

P. Schwarzbözl, Inga Miadowicz, Daniel Maldonado Quinto, Julian Golembiewski, Pascal Jörke, T. Faulwasser, Christian Wietfeld

{"title":"5G as Communication Platform for Solar Tower Plants","authors":"P. Schwarzbözl, Inga Miadowicz, Daniel Maldonado Quinto, Julian Golembiewski, Pascal Jörke, T. Faulwasser, Christian Wietfeld","doi":"10.52825/solarpaces.v2i.858","DOIUrl":"https://doi.org/10.52825/solarpaces.v2i.858","url":null,"abstract":"Wiring of heliostat fields for solar tower plants is a cost factor that becomes more important as the overall cost target is decreasing. Wireless heliostats with radio communication and autarchic energy supply have therefore been proposed in the past. But none of the communication solutions investigated so far could realistically scale to commercial size plants with tens of thousands of heliostats. Moreover, the digitalization of CSP plants with numerous mobile and stationary sensor systems requires a suitable data communication, too. The new generation of mobile radio communication (5G) is capable of handling the heterogenous communication profile portfolio comprising large numbers of units with low data rates – like heliostats - and few units with very large data volume – like e.g. drone-based camera systems. The communication requirements of a typical solar tower installation are assessed in this work and a data traffic model is created for the most relevant communication channels. The various existing 5G implementations are assessed to find the most suitable solution. Different operator models for 5G are considered and their applicability in CSP target countries is discussed. A simulation test case is presented that models the radio communication traffic of a heliostat field control during a cloud passage. Finally, the experimental 5G campus network is introduced that is currently installed at the Solar Tower Jülich research plant and will be operated in the upcoming months to demonstrate the technical feasibility of 5G radio for communication in solar fields.","PeriodicalId":506238,"journal":{"name":"SolarPACES Conference Proceedings","volume":"25 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141807329","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

Advanced Controllers for Heat Transfer Fluid Mass Flow Rate Control in Solar Tower Receivers 太阳能塔接收器中用于传热流体质量流量控制的先进控制器

SolarPACES Conference Proceedings Pub Date : 2024-07-24 DOI: 10.52825/solarpaces.v2i.913

Cody B. Anderson, Giancarlo Gentile, Alessandro Longhi, Francesco Casella, Michael E. Cholette, G. Manzolini

{"title":"Advanced Controllers for Heat Transfer Fluid Mass Flow Rate Control in Solar Tower Receivers","authors":"Cody B. Anderson, Giancarlo Gentile, Alessandro Longhi, Francesco Casella, Michael E. Cholette, G. Manzolini","doi":"10.52825/solarpaces.v2i.913","DOIUrl":"https://doi.org/10.52825/solarpaces.v2i.913","url":null,"abstract":"Efficient control strategies for managing the mass flow rate (MFR) of heat transfer fluids (HTF) during cloud transients in Solar Tower receivers play a pivotal role in optimizing plant profitability and receiver durability. This study focuses on the performance and durability of Solar Tower receivers during cloud transients. It evaluates adaptive feedback and feedforward control methods, which adjust the flow rate of heat transfer fluids based on real-time measurements of direct normal irradiance (DNI), receiver outlet and receiver panel outlet temperatures. The effectiveness of an aggressive all-sky and conservative clear-sky control strategy is explored against a conventional PI controller, emphasizing energy efficiency and receiver longevity. Simulations using a thermal Modelica model resembling a 100 MWel Crescent Dunes-like solar tower plant reveal that both advanced controllers provide precise setpoint tracking, while the PI controller struggles. The conservative controller which has a cloud standby mode prevents overheating during cloud transients by using a clear sky mass flow rate, while the aggressive controller uses the receiver panel outlet temperatures to correct for upstream tube temperature variations allowing for fast tracking correction and disturbance rejection, albeit with slight overshoots. Furthermore, the controllers significantly decrease the creep-fatigue damage accumulated in the receiver panels during cloudy days, due to limiting the increase in wall temperature spikes when cloud events end. Overall, this study underscores the pivotal role of HTF mass flow rate control systems in influencing receiver system failure modes and longevity and offers a new tool in controller design and operation assessment.","PeriodicalId":506238,"journal":{"name":"SolarPACES Conference Proceedings","volume":"12 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141807585","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

Impact of Temperature and Optical Error on the Combined Optical and Thermal Efficiency of Solar Tower Systems for Industrial Process Heat 温度和光学误差对用于工业过程供热的太阳能塔系统的光学和热能综合效率的影响

SolarPACES Conference Proceedings Pub Date : 2024-07-24 DOI: 10.52825/solarpaces.v2i.866

Alexander Zolan, Chad Augustine, Evan Westphal, Ken Armijo, Ye Wang, John Pye

引用次数: 0

Development and Investigation of Nitrate Phase Change Filler Material for Solar Process Heating Applications 开发和研究用于太阳能工艺加热应用的硝酸盐相变填充材料

SolarPACES Conference Proceedings Pub Date : 2024-07-24 DOI: 10.52825/solarpaces.v2i.917

N. Pradeep, K.S. Reddy

{"title":"Development and Investigation of Nitrate Phase Change Filler Material for Solar Process Heating Applications","authors":"N. Pradeep, K.S. Reddy","doi":"10.52825/solarpaces.v2i.917","DOIUrl":"https://doi.org/10.52825/solarpaces.v2i.917","url":null,"abstract":"Thermocline thermal energy storage system is an imperial system for solar process heating applications. The thermal energy storage system comprises filler material and heat transfer fluid. In the present study, the commercial phase change material (PCM) (filler material) solar salt (60%NaNO3+40%KNO3) is synthesized, and it is encapsulated with a 1mm thickness of stainless steel 316L encapsulation with the macro-size of 60mm; the encapsulated PCMs is considered as a single particle in the thermocline thermal energy storage system. The performance of the single encapsulated PCM is studied with a constant heat transfer fluid (Therminol-VP1) flow rate of 0.00015 kg/s during the charging process. The specific heat of the solar salt is measured in Differential Scanning Calorimeter (DSC) in the solid phase is found as 1.381 J/gK, and liquid phase is identified as 1.551 J/g-K, the enthalpy during the phase change process is found as 116.72 J/g. As well, the thermal conductivity of the solar salt is measured in Transient Heat Conduction method, and the thermal conductivity follows the linear relationship of -0.0025(T)+0.4023 (45ºC<T<100ºC) in the sensible region. The temperature variations and the phase change phenomena for the solar salt is identified and the contours are provided. The charging time for the encapsulated solar salt is identified as ~138 minutes. The energy storage cost for the single filler material (Solar Salt + SS316L encapsulation) is identified as Rs.5.93/- (USD 0.071) for the period of charging duration.","PeriodicalId":506238,"journal":{"name":"SolarPACES Conference Proceedings","volume":"63 22","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141806788","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

Integration of Concentrating Solar Power With High Temperature Electrolysis for Hydrogen Production 聚光太阳能发电与高温电解制氢相结合

SolarPACES Conference Proceedings Pub Date : 2024-07-24 DOI: 10.52825/solarpaces.v2i.973

Zhiwen Ma, Janna Martinek

{"title":"Integration of Concentrating Solar Power With High Temperature Electrolysis for Hydrogen Production","authors":"Zhiwen Ma, Janna Martinek","doi":"10.52825/solarpaces.v2i.973","DOIUrl":"https://doi.org/10.52825/solarpaces.v2i.973","url":null,"abstract":"Hydrogen has been identified as a leading sustainable contender to replace fossil fuels for transportation or electricity generation, and hydrogen generated from renewable sources can be an energy carrier for a carbon-free economy. Several hydrogen production methods are under development or deployment with various technical readiness levels and technoeconomic potentials. This study focuses on integrating concentrating solar thermal power (CSP) with high temperature electrolysis (HTE) using solid oxide electrolysis cells (SOEC). The CSP-HTE integration approach provides the benefits of thermal energy storage for continuous operation, improved capacity, and reduced thermal cycling for improved SOEC life. The CSP-HTE system analysis utilizes a Python-based system modeling program in connection with solar receiver thermal output derived from the NREL System Advisor Model (SAM) software. The system model facilitates component sizing, performance simulation, and evaluation of operation modes on an annual basis for various CSP-HTE configurations including CSP with thermal energy storage (TES). The SOEC operation conditions were simulated to assess component sizing and performance and to derive system capacity factors.","PeriodicalId":506238,"journal":{"name":"SolarPACES Conference Proceedings","volume":"50 10","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141808356","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

Numerical Assessment of Enhanced Coatings in Wire Mesh Volumetric Absorbers 线网体积吸收器中增强涂层的数值评估

SolarPACES Conference Proceedings Pub Date : 2024-04-16 DOI: 10.52825/solarpaces.v1i.610

A. Avila-Marin, Ángel Morales, Meryem Farchado, Gema San Vicente, Maria Elena Carra, J. Carballo, Daniel Sánchez-Señorán

引用次数: 0

Flux Sensor Measurement and Calibration Requirements for High-Intensity Heat Flux Applications 高强度热通量应用中的通量传感器测量和校准要求

SolarPACES Conference Proceedings Pub Date : 2024-04-16 DOI: 10.52825/solarpaces.v1i.637

Luke McLaughlin, Hendrik Laubscher, Nathan Schroeder, Kenneth Armijo, Jörgen Konings, Robert Dolce, K. van den Bos

{"title":"Flux Sensor Measurement and Calibration Requirements for High-Intensity Heat Flux Applications","authors":"Luke McLaughlin, Hendrik Laubscher, Nathan Schroeder, Kenneth Armijo, Jörgen Konings, Robert Dolce, K. van den Bos","doi":"10.52825/solarpaces.v1i.637","DOIUrl":"https://doi.org/10.52825/solarpaces.v1i.637","url":null,"abstract":"Stakeholders of CSP and non-CSP high-intensity broadband flux measurements were surveyed and interviewed to obtain flux sensor design and calibration requirements. Existing sensor technologies and existing calibration facilities were then compared against this standard. Stakeholders require a flux sensor designed for >5,000 kW/m2 flux measurements, >1,000 life cycles, <500 ms response time, >60-minute exposure at maximum flux, and <5% measurement uncertainty. Stakeholders also require a sensor with minimal cost, short procurement lead time, and a high-intensity broadband flux calibration. Commercial CSP stakeholders primarily rely on infrared (IR) temperature measurements of receiver equipment to control CSP plant process operation, whereas CSP research and development (R&D) and non-CSP stakeholders rely on accurate flux gauge measurements for a variety of applications. It was determined that existing flux sensor technologies and calibration facilities do not comprehensively meet stakeholder needs. This study suggests a more robust circular foil gauge with a high-intensity solar flux calibration comprehensively meets stakeholder flux measurement needs. Improved circular foil gauge designs and an improved flux sensor calibration facility are discussed.","PeriodicalId":506238,"journal":{"name":"SolarPACES Conference Proceedings","volume":"5 22","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140697045","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