{"title":"Pressure Drop and Interfacial Heat Transfer Coefficient Formulation for Packed Bed Systems with Cylindrical Capsules","authors":"Akshay Kumar, Pratyush Kumar, Sandip K. Saha","doi":"10.1007/s11242-024-02143-3","DOIUrl":null,"url":null,"abstract":"<div><p>Packed beds with cylindrical particles of polymeric material are a better option for developing low-cost, durable thermal energy storage for higher temperature ranges and corrosive environments. In this work, the formulations for pressure drop and interfacial convective heat transfer coefficient in the packed bed system (PBS) filled with cylindrical particles are developed for a wide range of geometrical and operating parameters. Two experimental setups are developed to determine the effects of superficial velocity, porosity of PBS, and geometrical dimensions of cylindrical particles on pressure drop and interfacial convective heat transfer coefficient. A discrete element method-based numerical model of PBS is developed to obtain the effect of fluid properties. The machine learning regression is deployed on the experimental and numerical data set to obtain a pressure drop formulation. Further, an analytical expression based on the Ergun equation is developed to approximate the machine-learning-based pressure drop formulation. The interfacial heat transfer coefficient is estimated by solving the steady-state heat conduction equation using the experimentally measured particle surface and air temperatures. The developed pressure drop and interfacial heat transfer coefficient formulations show maximum mean absolute deviations of less than 10.1% and 5.5%, respectively, with the experimental results.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":804,"journal":{"name":"Transport in Porous Media","volume":"152 1","pages":""},"PeriodicalIF":2.7000,"publicationDate":"2024-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Transport in Porous Media","FirstCategoryId":"5","ListUrlMain":"https://link.springer.com/article/10.1007/s11242-024-02143-3","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENGINEERING, CHEMICAL","Score":null,"Total":0}
引用次数: 0
Abstract
Packed beds with cylindrical particles of polymeric material are a better option for developing low-cost, durable thermal energy storage for higher temperature ranges and corrosive environments. In this work, the formulations for pressure drop and interfacial convective heat transfer coefficient in the packed bed system (PBS) filled with cylindrical particles are developed for a wide range of geometrical and operating parameters. Two experimental setups are developed to determine the effects of superficial velocity, porosity of PBS, and geometrical dimensions of cylindrical particles on pressure drop and interfacial convective heat transfer coefficient. A discrete element method-based numerical model of PBS is developed to obtain the effect of fluid properties. The machine learning regression is deployed on the experimental and numerical data set to obtain a pressure drop formulation. Further, an analytical expression based on the Ergun equation is developed to approximate the machine-learning-based pressure drop formulation. The interfacial heat transfer coefficient is estimated by solving the steady-state heat conduction equation using the experimentally measured particle surface and air temperatures. The developed pressure drop and interfacial heat transfer coefficient formulations show maximum mean absolute deviations of less than 10.1% and 5.5%, respectively, with the experimental results.
期刊介绍:
-Publishes original research on physical, chemical, and biological aspects of transport in porous media-
Papers on porous media research may originate in various areas of physics, chemistry, biology, natural or materials science, and engineering (chemical, civil, agricultural, petroleum, environmental, electrical, and mechanical engineering)-
Emphasizes theory, (numerical) modelling, laboratory work, and non-routine applications-
Publishes work of a fundamental nature, of interest to a wide readership, that provides novel insight into porous media processes-
Expanded in 2007 from 12 to 15 issues per year.
Transport in Porous Media publishes original research on physical and chemical aspects of transport phenomena in rigid and deformable porous media. These phenomena, occurring in single and multiphase flow in porous domains, can be governed by extensive quantities such as mass of a fluid phase, mass of component of a phase, momentum, or energy. Moreover, porous medium deformations can be induced by the transport phenomena, by chemical and electro-chemical activities such as swelling, or by external loading through forces and displacements. These porous media phenomena may be studied by researchers from various areas of physics, chemistry, biology, natural or materials science, and engineering (chemical, civil, agricultural, petroleum, environmental, electrical, and mechanical engineering).