Journal of Solar Energy Engineering最新文献_第3页

Concentrated Solar Power techno-economic analysis in humid subtropical South America. The Uruguayan case 南美洲亚热带潮湿地区的聚光太阳能发电技术经济分析。乌拉圭案例

Journal of Solar Energy Engineering Pub Date : 2024-04-23 DOI: 10.1115/1.4065388

Agustín Ghazarian, P. Galione, Pedro Curto

{"title":"Concentrated Solar Power techno-economic analysis in humid subtropical South America. The Uruguayan case","authors":"Agustín Ghazarian, P. Galione, Pedro Curto","doi":"10.1115/1.4065388","DOIUrl":"https://doi.org/10.1115/1.4065388","url":null,"abstract":"\u0000 This study assesses the feasibility of installing concentrated solar power plants in subtropical South America, particularly in Uruguay, by numerical simulations. Parabolic Trough and Solar Power Tower technologies are examined. A comprehensive literature analysis is conducted in order to evaluate initial investment, operation, and maintenance costs. Simulation models are validated in order to ensure results accuracy. The study is focused on the optimization of solar fields and storage sizes for five locations. The target set is to minimize the Levelized Cost of Energy. In addition, energy losses and efficiencies are compared between Parabolic Trough and Solar Power Tower technologies. Salto region in Uruguay is identified as the most suitable location for Concentrated Solar Power projects. Optimized plants yield solar multiples of 3 or higher for Solar Power Tower and around 4 for Parabolic Trough, with storage sizes ranging from 12 to 15 hours, depending on the location. In Salto, the Levelized Cost of Energy ranges from 148 to 175 USD/MWh for 110 MW Solar Power Tower and from 169 to 220 USD/MWh for 55 MW Parabolic Trough plants, considering different investment cost scenarios. Levelized Cost of Energy is comparable for other locations, with a slight increase of approximately 10% for the least favorable location, Rocha. This work shows that while not yet competitive with photovoltaic or wind technologies, concentrated solar power plants show promise against fossil-fueled power plants and are expected to decrease further in cost.","PeriodicalId":502733,"journal":{"name":"Journal of Solar Energy Engineering","volume":"8 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140666427","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

TWO-FLUID AND DISCRETE ELEMENT MODELING OF A PARALLEL PLATE FLUIDIZED BED HEAT EXCHANGER FOR CONCENTRATING SOLAR POWER 用于聚光太阳能发电的平行板流化床热交换器的双流体和离散元件建模

Journal of Solar Energy Engineering Pub Date : 2024-04-17 DOI: 10.1115/1.4065334

Krutika Appaswamy, Jason Schirck, Chathusha Punchi Wedikkara, Aaron Morris, Zhiwen Ma

{"title":"TWO-FLUID AND DISCRETE ELEMENT MODELING OF A PARALLEL PLATE FLUIDIZED BED HEAT EXCHANGER FOR CONCENTRATING SOLAR POWER","authors":"Krutika Appaswamy, Jason Schirck, Chathusha Punchi Wedikkara, Aaron Morris, Zhiwen Ma","doi":"10.1115/1.4065334","DOIUrl":"https://doi.org/10.1115/1.4065334","url":null,"abstract":"\u0000 A novel high temperature particle solar receiver is developed by using a light trapping planar cavity configuration. As particles fall through the cavity, the concentrated solar radiation warms the boundaries of the receiver and in turn heats the particles. Particles flow through the system, forming a fluidized bed at the lower section, leaving the system from the bottom at a constant flow rate. Air is introduced to the system as the fluidizing medium to improve particle heat transfer and mixing. A laboratory scale cavity receiver is built by collaborators at the Colorado School of Mines and their data is used for model validation. In this experimental setup, near IR quartz lamp is used to provide flux to the vertical wall of the heat exchanger. The system is modeled using the discrete element method and a continuum two-fluid method. The computational model matches the experimental system size, and the particle size distribution is assumed monodisperse. A new continuum conduction model that accounts for the effects of solid concentration is implemented, and the heat flux boundary condition matches the experimental setup. Radiative heat transfer is estimated using a widely used correlation during the post-processing step to determine an overall heat transfer coefficient. The model is validated against testing data and achieves less than 30% discrepancy and a heat transfer coefficient greater than 1000 W/m2K.","PeriodicalId":502733,"journal":{"name":"Journal of Solar Energy Engineering","volume":" 110","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140692223","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

Fungible, Multiyear Solar Thermochemical Energy Storage Demonstrated via the Cobalt Oxide Cycle 通过氧化钴循环展示可持续、多年的太阳能热化学储能技术

Journal of Solar Energy Engineering Pub Date : 2024-03-18 DOI: 10.1115/1.4065102

Katherine Bassett, Rachel Silcox, Jeffrey D. Will, Sarah Hill, Paul Smith, Ben Smith, Brian Schmit, Luke J. Venstrom, Peter Krenzke

{"title":"Fungible, Multiyear Solar Thermochemical Energy Storage Demonstrated via the Cobalt Oxide Cycle","authors":"Katherine Bassett, Rachel Silcox, Jeffrey D. Will, Sarah Hill, Paul Smith, Ben Smith, Brian Schmit, Luke J. Venstrom, Peter Krenzke","doi":"10.1115/1.4065102","DOIUrl":"https://doi.org/10.1115/1.4065102","url":null,"abstract":"\u0000 We present a proof of concept demonstration of solar thermochemical energy storage on a multiple year time scale. The storage is fungible, and can take the form of process heat or hydrogen. We designed and fabricated a 4-kW solar rotary drum reactor to carry out the solar-driven charging step of solar thermochemical storage via metal oxide reduction- oxidation cycles. During the summer of 2019, the solar reactor was operated in the Valparaiso University solar furnace to effect the reduction of submillimeter cobalt oxide particles in air at approximately 1000°C. A particle collection system cooled the reduced particles rapidly enough to maintain conversions of 84–94% for feed rates of 2.9–60.8 g min−1. The solar-to-chemical storage efficiency, defined as the enthalpy of the reduction reaction at 1000°C divided by the solar energy input, reached 20%. Samples of the reduced cobalt oxide particles were stored in vials in air at room temperature for more than three years. The stored solar energy was released by reoxidizing samples in air in a benchtop reactor and by electrochemically reoxidizing samples to produce H2. Measurements of the oxygen uptake by the reduced metal oxide confirm its promise as a medium to store and dispatch solar energy over long durations. Linear sweep voltammetry and bulk electrolysis demonstrate the promise of H2 production at 0.55 V relative to the normal hydrogen electrode, 0.68 V below the 1.23 V potential required for conventional electrolysis.","PeriodicalId":502733,"journal":{"name":"Journal of Solar Energy Engineering","volume":"43 12","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140231506","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

TECHNO-ECONOMIC ANALYSIS OF USING REVERSIBLE TURBOMACHINERY FOR PUMPED THERMAL ENERGY STORAGE SYSTEMS 抽水蓄能系统使用可逆涡轮机械的技术经济分析

Journal of Solar Energy Engineering Pub Date : 2024-03-11 DOI: 10.1115/1.4065041

Simone Parisi, N. Desai, Fredrik Haglind

{"title":"TECHNO-ECONOMIC ANALYSIS OF USING REVERSIBLE TURBOMACHINERY FOR PUMPED THERMAL ENERGY STORAGE SYSTEMS","authors":"Simone Parisi, N. Desai, Fredrik Haglind","doi":"10.1115/1.4065041","DOIUrl":"https://doi.org/10.1115/1.4065041","url":null,"abstract":"\u0000 The objective of this paper is to assess the techno-economic performance of different cycle configurations for pumped thermal energy storage (PTES), including the effects of charging electricity cost. Reversible turbomachinery was employed to reduce the capital cost of the system. Brayton cycles with different working fluids and a subcritical Rankine cycle operating with ammonia were compared. Both liquid and packed bed thermal storage were investigated. A new cost correlation for turbomachines, initially established for the turbines of organic Rankine cycles, was developed for compressors and reversible machines. This correlation is based on the number of stages and physical size of the machine, which were estimated considering thermodynamic as well as mechanical limitations. The results indicate that for a plant size of 50 MW and a discharge duration of 8 hours, the Brayton system with liquid storage and helium as a working fluid has the lowest levelized cost of storage at 0.138/$kWh, mainly due to the high thermal conductivity of the fluid. Packed bed thermal energy storage systems were found to be more expensive than liquid storage systems due to the large cost of the pressure vessels, with cost parity reached at a discharge duration of 4 hours. However, at this duration lithium-ion batteries are likely to be cheaper. The results suggest that the levelized cost of storage for the Rankine cycle based system is slightly higher at 0.151/$kWh.","PeriodicalId":502733,"journal":{"name":"Journal of Solar Energy Engineering","volume":"73 7","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140251850","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

PREDICTION OF THERMIONIC ENERGY CONVERSION PERFORMANCE AND PARAMETRIC EFFECTS USING GENETIC ALGORITHMS TO FIT PHYSICS-INSPIRED MODEL EQUATIONS TO PROTOTYPE TEST DATA 使用遗传算法根据原型测试数据拟合物理启发模型方程，预测热离子能量转换性能和参数效应

Journal of Solar Energy Engineering Pub Date : 2024-03-11 DOI: 10.1115/1.4065042

Elizabeth D. Juette, Van P. Carey, J. Fleurial

{"title":"PREDICTION OF THERMIONIC ENERGY CONVERSION PERFORMANCE AND PARAMETRIC EFFECTS USING GENETIC ALGORITHMS TO FIT PHYSICS-INSPIRED MODEL EQUATIONS TO PROTOTYPE TEST DATA","authors":"Elizabeth D. Juette, Van P. Carey, J. Fleurial","doi":"10.1115/1.4065042","DOIUrl":"https://doi.org/10.1115/1.4065042","url":null,"abstract":"\u0000 Thermionic converters have potential as an energy conversion technology for high temperature space and terrestrial applications using concentrated solar, nuclear reaction, and combustion processes as the heat source. Recent studies have generated experimental performance data for narrow-gap thermionic energy conversion devices. This investigation explores the use of genetic algorithms to fit existing data with physics-inspired model equations. The resulting model equations can be used for performance prediction for system design optimization or to explore parametric effects on performance. The model equations incorporate Richardson's law for current density, including both the saturated and Boltzmann regimes, with appropriate relations for power delivered to the external load. The transition regime is characterized using two separate models, each accounting for non-uniformity in emission surfaces and irregularities in the manufacturing process. The trained models enable performance prediction of small-gap thermionic energy conversion devices. In this study, data was fitted for two different prototype designs. The prototype test data and postulated values for the work functions and a transition regime parameter are substituted into physics-inspired model equations, yielding performance models with three adjustable constants. Optimized values of these constants are determined using a genetic algorithm to best fit the experimentally determined performance data for prototype thermionic conversion devices tested in earlier studies. This approach is demonstrated to fit the performance data to within 9%. This methodology also allows the user to back-infer the effective work function values, which were found in this study to be consistent with independent measurement.","PeriodicalId":502733,"journal":{"name":"Journal of Solar Energy Engineering","volume":"37 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140254317","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

Effects of an Annular Baffle on Heat Transfer to an Immersed Coil Heat Exchanger in Thermally Stratified Tanks 环形挡板对热分层储罐中沉浸式盘管热交换器传热的影响

Journal of Solar Energy Engineering Pub Date : 2024-03-11 DOI: 10.1115/1.4065039

J. Nicodemus, Joshua H. Smith, Joseph Noreika, Manaka Gomi, Tingyu Zhou

{"title":"Effects of an Annular Baffle on Heat Transfer to an Immersed Coil Heat Exchanger in Thermally Stratified Tanks","authors":"J. Nicodemus, Joshua H. Smith, Joseph Noreika, Manaka Gomi, Tingyu Zhou","doi":"10.1115/1.4065039","DOIUrl":"https://doi.org/10.1115/1.4065039","url":null,"abstract":"\u0000 The effect of a cylindrical baffle on heat transfer to an immersed heat exchanger is investigated in initially thermally stratified tanks. The heat exchanger is located in the annular region created by the baffle and the tank wall. Three cases of initial thermal stratification are explored, and in each case experiments are conducted with and without the baffle in the stratified tank and in a comparable isothermal tank with the same initial energy. The baffle maintains the high initial temperature of the upper zone of the stratified tanks for 10-16 minutes, as cool plumes that form on the heat exchanger are confined to the annular baffle region until they exit at the bottom of the tank. Regardless of stratification, the baffle always improves heat transfer to the immersed heat exchanger. In the isothermal tanks, the baffle increases total energy extracted in the first 30 minutes of discharge by over 20%. In stratified tanks, the baffle increases total energy extracted in 30 minutes of discharge by 9% to 16%. Initially, the improvement in heat transfer is due to the higher driving temperature differences around the heat exchanger. After all the water from the hot zone has entered and flowed through the baffle, the tank is basically isothermal, and velocity increases as the fluid temperature drops, maintaining rates of heat transfer higher than that in the tank without the baffle. In tanks with the baffle, stratification has only a modest positive effect on heat transfer to the immersed heat exchanger.","PeriodicalId":502733,"journal":{"name":"Journal of Solar Energy Engineering","volume":"30 7","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140396025","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

Heat and mass transfer model for a counter-flow moving packed-bed oxidation reactor/heat exchanger 逆流移动填料床氧化反应器/换热器的传热和传质模型

Journal of Solar Energy Engineering Pub Date : 2024-03-11 DOI: 10.1115/1.4065040

Ashreet Mishra, David Korba, Jian Zhao, Like Li

{"title":"Heat and mass transfer model for a counter-flow moving packed-bed oxidation reactor/heat exchanger","authors":"Ashreet Mishra, David Korba, Jian Zhao, Like Li","doi":"10.1115/1.4065040","DOIUrl":"https://doi.org/10.1115/1.4065040","url":null,"abstract":"\u0000 Particle-based thermochemical energy storage (TCES) through metal oxide redox cycling is advantageous compared to traditional sensible and latent heat storage (SHS and LHS) due to its higher operating temperature and energy density, and the capability for long-duration storage. However, overall system performance also depends on the efficiency of the particle-to-working fluid heat exchangers (HXs). Moving packed-bed particle-to-supercritical CO2 (sCO2) HXs have been extensively studied in SHS systems. Integrating the oxidation reactor (OR) for discharging with a particle-to-sCO2 HX is a natural choice, for which detailed analysis is needed for OR/HX design and operation. In this work, a 2D continuum heat and mass transfer model coupling transport phenomena and reaction kinetics is developed for a shell-and-plate moving-bed OR/HX. For the baseline design, the model predicted ∼75% particle bed extent of oxidation at the channel exit, yielding a total heat transfer rate of 16.71 kW for 1.0 m2 heat transfer area per channel, while the same design with inert particles (SHS only) gives only 4.62 kW. A parametric study was also conducted to evaluate the effects of particle, air, and sCO2 flow rates, channel height and width, and average particle diameters. It is found that the respective heat transfer rate and sCO2 outlet temperature can approach ∼25 kW and >1000°C for optimized designs for the OR/HX. The present model will be valuable for further OR/HX design, scale-up, and optimization of operating conditions.","PeriodicalId":502733,"journal":{"name":"Journal of Solar Energy Engineering","volume":"35 26","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140253573","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

A novel methodology to estimate the cell temperature of PVT modules: test with experimental data, prospects and limits 估算 PVT 组件电池温度的新方法：实验数据测试、前景和局限性

Journal of Solar Energy Engineering Pub Date : 2024-02-27 DOI: 10.1115/1.4064857

Maxime Mussard, Alexandre Vaudrey, Junjie Zhu, S. E. Foss

{"title":"A novel methodology to estimate the cell temperature of PVT modules: test with experimental data, prospects and limits","authors":"Maxime Mussard, Alexandre Vaudrey, Junjie Zhu, S. E. Foss","doi":"10.1115/1.4064857","DOIUrl":"https://doi.org/10.1115/1.4064857","url":null,"abstract":"\u0000 The efficient use and understanding of photovoltaic thermal modules require accurately evaluating the temperature of their photovoltaic cells. But due to their specific composition, measuring this temperature directly is usually very complicated, if not impossible in practice. In this article, we present an original methodology to estimate the temperature of the cells of a PVT module. In order to do this, we simultaneously conduct experiments on both PVT and PV modules equipped with identical PV cells, and compare their electrical performance. The temperature of the PV module's back side is measured and used to estimate the temperature of the PV cells. The latter is then combined with the electrical power output difference between PV and PVT modules in order to obtain, through a specifically developed thermal model, the cell temperature of the PVT module. In addition, an experimental comparative analysis of different PVT modules is presented. The methodology and the results are promising but the experimental measurements used are subject to significant uncertainties that impact the accuracy of the estimation. The model uses an innovative approach to estimate the PV cell temperature of PVT modules, and recommendations are provided to optimize experimental data measurement accuracy in order to use this model in the best possible conditions.","PeriodicalId":502733,"journal":{"name":"Journal of Solar Energy Engineering","volume":"261 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140427974","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

Reviewer's Recognition 评审员表彰

Journal of Solar Energy Engineering Pub Date : 2024-02-19 DOI: 10.1115/1.4064785

S.A. Sherif

引用次数: 0

Optimal Design of Anti-icing Blunt Trailing-edge Wind Wheel for H-type Vertical Axis Wind Turbine under Operating Conditions 运行条件下 H 型垂直轴风力发电机防结冰钝尾缘风轮的优化设计

Journal of Solar Energy Engineering Pub Date : 2024-02-19 DOI: 10.1115/1.4064786

Xu Zhang, Lengshuang Cui, Lei Zhao, Wei Li

{"title":"Optimal Design of Anti-icing Blunt Trailing-edge Wind Wheel for H-type Vertical Axis Wind Turbine under Operating Conditions","authors":"Xu Zhang, Lengshuang Cui, Lei Zhao, Wei Li","doi":"10.1115/1.4064786","DOIUrl":"https://doi.org/10.1115/1.4064786","url":null,"abstract":"\u0000 A novel optimization method is developed for the design of an anti-icing blunt trailing-edge wind wheel of H-type VAWT based on the quasi-steady state icing. The parametric expression of the airfoil is given using the mean camber and thickness functions, the blunt trailing-edge is constructed by the rotation and zoom of coordinates, and then through the aerodynamic design theory, the geometry control equations of the blunt trailing-edge wind wheel are established. The SMT is applied to analyze the unsteady flow field, the MRF is combined with Euler method to calculate the collection efficiency of water droplets, the mass and heat transfer analysis is adopted to determine the mass and shape of ice, and then the thickness of the ice layer is obtained and the mesh is updated. The icing process is repeated at the azimuthal angle interval of 45 degree to obtain the ice on the wind wheel per revolution, and the results are compared with experimental data in the existing literature. The optimization model in which the shape factor, blunt trailing-edge thickness, and chord length of the airfoil, the blade length, and the wind wheel radius are taken as design variables is solved using the PSO algorithm integrated with CFD method to maximize the wind energy utilization in both ice-free and icing conditions. Significant improvements are realized for flow and aerodynamic characteristics, confirming that the developed optimization method provides important guidance for the anti-icing design of VAWT blades.","PeriodicalId":502733,"journal":{"name":"Journal of Solar Energy Engineering","volume":"15 9","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139958658","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