Article
Energy & Fuels
Mohammad M. S. Al-Azawii, Sabah F. H. Alhamdi, Sasha Braun, Jean-Francois Hoffmann, Nicolas Calvet, Ryan Anderson
Summary: This paper presents experimental results comparing a new 100% recycled ceramic material, ReThink Seramic - Flora, with conventional alpha-alumina materials in thermal energy storage. The study shows that alumina beads have higher performance in terms of thermal exergy efficiency than ReThink Seramic - Flora.
JOURNAL OF ENERGY STORAGE
(2021)
Article
Energy & Fuels
Mohammad M. S. Al-Azawii, Sabah F. H. Alhamdi, Sasha Braun, Jean-Francois Hoffmann, Nicolas Calvet, Ryan Anderson
Summary: ReThink Seramic - Flora is an innovative ceramic material made from 100% recycled materials, which shows great potential as a storage material for high-temperature applications. Its affordability, suitable thermal performance, and low pressure drop make it a promising option for concentrated solar power plants.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Energy & Fuels
David Gavino, Eduardo Cortes, Jesus Garcia, Ignacio Calderon-Vasquez, Jose Cardemil, Danilo Estay, Rodrigo Barraza
Summary: A discrete 1-D Eulerian and 3-D Lagrangian model is proposed to analyze heat transfer in packed beds composed of spherical particles. The model simulates particle behavior and provides detailed information about heat transfer. Comparison with experimental data indicates good accuracy. A sensitivity analysis demonstrates the importance of selecting an appropriate Nusselt number.
Review
Green & Sustainable Science & Technology
Ignacio Calderon-Vasquez, Eduardo Cortes, Jesus Garcia, Valentina Segovia, Alejandro Caroca, Cristobal Sarmiento, Rodrigo Barraza, Jose M. Cardemil
Summary: Single-tank packed-bed storage system, coupled with renewable thermal energy sources, has been established as a promising alternative with a potential cost reduction of approximately 33% compared to two-tank systems. The performance of simulation models in packed-bed energy storage systems is significantly influenced by radiation heat transfer among particles, which should not be underestimated when analyzing operation temperatures above 750 degrees C.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2021)
Article
Thermodynamics
Hao Zhou, Zhenya Lai, Kefa Cen
Summary: This paper investigates the impact of the physical properties of solid materials on the design of packed beds for energy storage, and compares the applicability of sintered ore particles, aluminium oxide balls, and rock crushed as sensible heat storage materials. Results indicate that sintered ore particles have the highest heat storage capacity at ultra-high temperatures.
Article
Engineering, Chemical
Lin Lin, Liang Wang, Xipeng Lin, Ningning Xie, Haisheng Chen
Summary: Experimental results show that the orifice diameter of the perforated plate distributor plays a significant role in the distribution performance of the spray-type packed bed, with flow rate having a lesser impact. As flow rate increases, the flow pattern through the distributor transitions from uncovered drops to covered drops and then to jet flow. The covered drop pattern demonstrates the best performance, balancing good distribution and low pressure drop, serving as the design and optimization principle for the distributor.
Article
Thermodynamics
Eduardo Cortes, David Gavino, Ignacio Calderon-Vasquez, Jesus Garcia, Danilo Estay, Jose M. Cardemil, Rodrigo Barraza
Summary: This study evaluates the radiation effects on the thermal behavior of a packed bed using a discrete model and a novel method called Layer View Factor. The research finds that radiation flattens the temperature profiles and accelerates the evolution of thermocline length in the packed bed. The stand-by process shows the largest impact, with a maximum temperature difference of 100K compared to the non-radiation case. The discharge temperature drops below 90% of the charge temperature when radiation is included.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Christian Odenthal, Jonas Tombrink, Freerk Klasing, Thomas Bauer
Summary: Various models for packed bed single tank molten salt storage systems have been compared, considering different use cases and considering the impact of heat losses and variable fluid properties. The results show that the choice of model significantly affects the outcome, and the results vary for different use cases. Therefore, selecting a reasonable level of modelling detail based on desired accuracy and computational effort is important.
APPLIED THERMAL ENGINEERING
(2023)
Article
Thermodynamics
Ziya Zeng, Bingchen Zhao, Weidong Chen, Kian Jon Ernest Chua, Ruzhu Wang
Summary: Water-based adsorption thermal battery (ATB) has great potential in widespread applications, especially in space heating, for energy saving and low-grade heat energy utilization. Experimental results show that the output temperature and heating power can be stabilized by tuning the airflow rate in the loop-cycle ATB system. A computational model predicts an effective heating time of 8.6 h, a discharging threshold temperature of 24 degrees C, and a maximum heat discharging efficiency of 63.4% for the packed-bed ATB. The ATB is capable of achieving stable thermal outputs for space heating applications.
Article
Engineering, Environmental
Lucas Chatre, Joseph Socci, Samuel J. Adams, Petr Denissenko, Nikolay Cherkasov
Summary: The paper presents a simplified approach to improve the efficiency of packed-bed reactors with structure-directed random packing, which alleviates mass transfer issues and reduces pressure drop, resulting in energy savings.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Thermodynamics
Ying-Guang Liu, Jiu-Yi Zhang, Hui-Jun Li, Qing-Yuan Ji, Qian Zhou
Summary: A new three-dimensional PBTST model with three-stage phase change material (PCM) and three-layered diameter capsules was proposed and its thermal energy storage behavior and thermal stratification performance were studied. The results showed that using cascaded three-layered diameter capsules can improve the charging efficiency and stratification properties of the tank.
APPLIED THERMAL ENGINEERING
(2023)
Article
Energy & Fuels
Joao Fidelio Raymundo Junior, Rejane de Cesaro Oliveski, Ionatan Anton Schroer
Summary: This study investigates the influence of thermal conditions of external flow on the melting process of PBSS filled with PCM. It was found that under uniform temperature conditions, the total melting time is faster compared to uniform heat flow conditions, and the upstream flow has a shorter total melting time compared to the downstream flow. The relationship between total melting time and temperature differences is non-linear, and the blockage ratio has a non-linear dependence on total melting time.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Energy & Fuels
Haobin Liang, Jianlei Niu, Ratna Kumar Annabattula, K. S. Reddy, Ali Abbas, Minh Tri Luu, Yixiang Gan
Summary: This study analyzed the performance advantages of the packed bed PCM storage unit design and numerically investigated key geometric parameters. It was found that packed bed units have a larger surface-to-volume ratio and are advantageous in large-scale applications.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Green & Sustainable Science & Technology
Weimin Guo, Zhaoyu He, Yuting Zhang, Peng Zhang
Summary: This study experimentally and theoretically examines the thermal performance of the packed bed thermal energy storage (PBTES) system used in waste heat recovery and utilization. The results show that various parameters significantly influence the time durations of charging and discharging processes as well as the thermal efficiency of the system.
Article
Energy & Fuels
Yan Wang, Zhifeng Wang, Guofeng Yuan
Summary: Energy storage is crucial for supporting renewable energy sources, and the sustainable thermal energy storage system can enhance heat transfer and improve energy efficiency and utilization. When combined with active control methods, it can also extend the discharge duration.
Article
Computer Science, Interdisciplinary Applications
Vahid Esfahanian, Behzad Baghapour, Mohammad Torabzadeh, Hossain Chizari
COMPUTERS & FLUIDS
(2014)
Article
Mathematics, Applied
Behzad Baghapour, Vahid Esfahanian, Mohammad Torabzadeh, Hossein Mahmoodi Darian
INTERNATIONAL JOURNAL OF COMPUTER MATHEMATICS
(2015)
Article
Thermodynamics
Behzad Baghapour
Summary: The present study proposes a deep learning regression approach for parametric modeling of thermal fluid flows based on a combination of convolutional auto-encoders (CAE) and neural networks (NN). The suggested regression model comprises of three steps: dimensional reduction, generalization, and reconstruction. This approach shows promising potential in predicting details of temperature and vorticity fields for a range of conditions.
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2023)
Article
Meteorology & Atmospheric Sciences
Behzad Baghapour, Pierre E. Sullivan
ATMOSPHERIC RESEARCH
(2017)
Article
Meteorology & Atmospheric Sciences
Behzad Baghapour, Cao Wei, Pierre E. Sullivan
ATMOSPHERIC RESEARCH
(2017)
Article
Thermodynamics
M. Ashjaee, M. Amiri, B. Baghapour, T. Yousefi
EXPERIMENTAL HEAT TRANSFER
(2007)
Article
Thermodynamics
B. Baghapour, V. Esfahanian, A. Nejat
JOURNAL OF APPLIED FLUID MECHANICS
(2014)
Article
Thermodynamics
Hai Zhao, Puzhen Gao, Xiaochang Li, Ruifeng Tian, Hongyang Wei, Sichao Tan
Summary: This study numerically investigates the interaction between flow-induced vibration and forced convection heat transfer in a tube bundle. The results show that the impact of flow-induced vibration on heat transfer varies in different flow velocity regions.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Rohit Chintala, Jon Winkler, Sugirdhalakshmi Ramaraj, Xin Jin
Summary: The current state of fault detection and diagnosis for residential air-conditioning systems is expensive and not suitable for widespread implementation. This paper proposes a cost-effective solution by introducing an automated fault detection algorithm as a screening step before more expensive tests can be conducted. The algorithm uses home thermostats and local weather information to identify thermodynamic parameters and detect high-impact air-conditioning faults.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
A. Azimi, N. Basiri, M. Eslami
Summary: This paper presents a novel optimization algorithm for improving the water-film cooling system of photovoltaic panels, resulting in a significant increase in net energy generation.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Duc-Thuan Phung, Chin-Hsiang Cheng
Summary: In this study, a novel CFDMD model is used to analyze and investigate the behavior of thermal-lag engines (TLE). The study shows that the CFDMD model effectively captures the thermodynamic behavior of the working gas and the dynamic behavior of the engine mechanism. Additionally, the study explores the temporal evolution of engine speed and the influence of various parameters on shaft power and brake thermal efficiency. The research also reveals the existence of a thermal-lag phenomenon in TLE.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Haiying Yang, Yinjie Shen, Lin Li, Yichen Pan, Ping Yang
Summary: The purpose of this article is to find a measure to improve the interfacial thermal transfer of graphene/silicon heterojunction. Through molecular dynamics simulation, it is found that surface modification can significantly reduce the thermal resistance, thereby improving the thermal conductivity of the graphene/silicon interface.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Qiong Wu, Yancheng Wang, Haonan Zhou, Xingye Qiu, Deqing Mei
Summary: This article introduces a visible methanol steam reforming microreactor, which uses an optical crystal as an observation window and measures the reaction temperature in real-time using infrared thermography. The results show that under lower oxygen to carbon ratio conditions, the microreactor has a higher heating rate and a stable gradient in temperature distribution.
APPLIED THERMAL ENGINEERING
(2024)
Review
Thermodynamics
Giulia Manco, Umberto Tesio, Elisa Guelpa, Vittorio Verda
Summary: In the past decade, there has been a growing interest in studying energy systems for the combined management of power vectors. Most of the published works focus on finding the optimal design and operations of Multi Energy Systems (MES). However, for newcomers to this field, understanding how to achieve the desired optimization details while controlling computational expenses can be challenging and time-consuming. This paper presents a novel approach to analyzing the existing literature on MES, with the aim of guiding practical development of MES optimization. Through the discussion of six case studies, the authors provide a mathematical formulation as a reference for building the model and emphasize the impact of different aspects on the problem nature and solver selection. In addition, the paper also discusses the different approaches used in the literature for incorporating thermal networks and storage in the optimization of multi-energy systems.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Xuepeng Yuan, Caiman Yan, Yunxian Huang, Yong Tang, Shiwei Zhang, Gong Chen
Summary: In this study, a multi-scale microgroove wick (MSMGW) was developed by laser irradiation, which demonstrated superior capillary performance. The surface morphology and performance of the wick were affected by laser scan pitch, laser power, repetition frequency, and scanning speed. The MSMGW showed optimal capillary performance in alumina material and DI water as the working fluid.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Maofei Mei, Feng Hu, Chong Han
Summary: This paper proposes an effective local search method based on detection of droplet boundaries for understanding the dynamic process of droplet growth during dropwise condensation. The method is validated by comparing with experimental data. The present simulation provides an effective approach to more accurately predict the nucleation site density in future studies.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Rahul Kumar Sharma, Ashish Kumar, Dibakar Rakshit
Summary: The study explores the use of phase change materials (PCM) as a retrofit with Heating Ventilation and Air-conditioning systems (HVAC) to reduce energy consumption and improve air quality. By incorporating PCM with specific thickness and fin configurations, significant energy savings can be achieved in comparison to standard HVAC systems utilizing R134a. This research provides policymakers with energy-efficient and sustainable solutions for HVAC systems to combat climate change.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Zhenhua Ren, Xiangjin Meng, Xingang Qi, Hui Jin, Yunan Chen, Bin Chen, Liejin Guo
Summary: This paper investigates the heat transfer mechanism and factors influencing thermal radiation in the process of supercritical water gasification (SCWG) of coal, and proposes a comprehensive numerical model to simulate the process. Experimental validation results show that thermal radiation accounts for a significant proportion of the total heat exchange in the reactor and a large amount of radiant energy exists in the important spectral range of supercritical water. Enhancing radiative heat transfer can effectively increase the temperature of the reaction medium and the gasification rate.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Mauro Abela, Mauro Mameli, Sauro Filippeschi, Brent S. Taft
Summary: Pulsating Heat Pipes (PHP) are passive two-phase heat transfer devices with a simple structure and high heat transfer capabilities. The actual unpredictability of their dynamic behavior during startup and thermal crisis hinders their large-scale application. An experimental apparatus is designed to investigate these phenomena systematically. The results show that increasing the number of evaporator sections and condenser temperature improves the performance of PHP. The condenser temperature also affects the initial liquid phase distribution and startup time.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Ke Gan, Ruilian Li, Yi Zheng, Hui Xu, Ying Gao, Jiajie Qian, Ziming Wei, Bin Kong, Hong Zhang
Summary: A 3-dimensional enhanced heat pipe radiator has been developed to improve heat dissipation and temperature uniformity in cooling high-power electronic components. Experimental results show that the radiator has superior heat transfer performance compared to a conventional aluminum fin radiator under different heating powers and wind speed conditions.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Xinyi Zhang, Shuzhong Wang, Daihui Jiang, Zhiqiang Wu
Summary: This study focuses on recovering waste heat from blast furnace slag using dry centrifugal pelletizing technology. A comprehensive two-dimensional model was developed to analyze heat transfer dynamics and investigate factors influencing heat exchange efficiency. The findings have important implications for optimizing waste heat recovery and ensuring safe operations.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Xincheng Wu, An Zou, Qiang Zhang, Zhaoguang Wang
Summary: The boosting heat generation rate of high-performance processors is challenging traditional cooling techniques. This study proposes a combined design of active jet intermittency and passive surface modification to enhance heat transfer.
APPLIED THERMAL ENGINEERING
(2024)