{"title":"Numerical investigation of flow, heat transfer characteristics and structure improvement in a fluidized bed solar particle receiver","authors":"","doi":"10.1016/j.ijthermalsci.2024.109294","DOIUrl":null,"url":null,"abstract":"<div><p>The fluidized bed solar particle receiver (SPR) has the potential to be used widely in the next generation concentrated solar power (CSP) plant as its high operating temperature, excellent stability and high energy storage capacity. However, the particle circulation pattern and temperature distribution are difficult to be visualized and measured by experimental methods, and there is a lack of improvement on the internal structure of the receiver. In this contribution, a three-dimensional transient numerical model is developed to study the flow and heat transfer characteristics under solar radiation. Moreover, three kinds of guide plate structure are designed to improve the particle average temperature. The results show that particle temperature can reach 1645.34 K after 10 s. The | | type guide plate has the best effect on increasing the average particle temperature. The particle average temperature is increased by about 3.70 %. Besides, increasing particle diameter and airflow velocity declines the thermal performance of the receiver.By contrast, with the rising of solar radiation intensity, particle average temperature increases from 1706.26 K to 1872.03 K. Simulation results can provide reference for the design and improvement of solar particle receiver.</p></div>","PeriodicalId":341,"journal":{"name":"International Journal of Thermal Sciences","volume":null,"pages":null},"PeriodicalIF":4.9000,"publicationDate":"2024-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Journal of Thermal Sciences","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1290072924004162","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, MECHANICAL","Score":null,"Total":0}
引用次数: 0
Abstract
The fluidized bed solar particle receiver (SPR) has the potential to be used widely in the next generation concentrated solar power (CSP) plant as its high operating temperature, excellent stability and high energy storage capacity. However, the particle circulation pattern and temperature distribution are difficult to be visualized and measured by experimental methods, and there is a lack of improvement on the internal structure of the receiver. In this contribution, a three-dimensional transient numerical model is developed to study the flow and heat transfer characteristics under solar radiation. Moreover, three kinds of guide plate structure are designed to improve the particle average temperature. The results show that particle temperature can reach 1645.34 K after 10 s. The | | type guide plate has the best effect on increasing the average particle temperature. The particle average temperature is increased by about 3.70 %. Besides, increasing particle diameter and airflow velocity declines the thermal performance of the receiver.By contrast, with the rising of solar radiation intensity, particle average temperature increases from 1706.26 K to 1872.03 K. Simulation results can provide reference for the design and improvement of solar particle receiver.
期刊介绍:
The International Journal of Thermal Sciences is a journal devoted to the publication of fundamental studies on the physics of transfer processes in general, with an emphasis on thermal aspects and also applied research on various processes, energy systems and the environment. Articles are published in English and French, and are subject to peer review.
The fundamental subjects considered within the scope of the journal are:
* Heat and relevant mass transfer at all scales (nano, micro and macro) and in all types of material (heterogeneous, composites, biological,...) and fluid flow
* Forced, natural or mixed convection in reactive or non-reactive media
* Single or multi–phase fluid flow with or without phase change
* Near–and far–field radiative heat transfer
* Combined modes of heat transfer in complex systems (for example, plasmas, biological, geological,...)
* Multiscale modelling
The applied research topics include:
* Heat exchangers, heat pipes, cooling processes
* Transport phenomena taking place in industrial processes (chemical, food and agricultural, metallurgical, space and aeronautical, automobile industries)
* Nano–and micro–technology for energy, space, biosystems and devices
* Heat transport analysis in advanced systems
* Impact of energy–related processes on environment, and emerging energy systems
The study of thermophysical properties of materials and fluids, thermal measurement techniques, inverse methods, and the developments of experimental methods are within the scope of the International Journal of Thermal Sciences which also covers the modelling, and numerical methods applied to thermal transfer.