Article
Thermodynamics
Mohammed A. Hefni, Minghan Xu, Ahmad F. Zueter, Ferri Hassani, Mohamed A. Eltaher, Haitham M. Ahmed, Hussein A. Saleem, Hussin A. M. Ahmed, Gamal S. A. Hassan, Khaled I. Ahmed, Essam B. Moustafa, Emad Ghandourah, Agus P. Sasmito
Summary: We propose a novel three-dimensional analytical framework that accurately predicts and evaluates the thermal performance of geothermal borehole systems with single or multiple heat exchangers. The model includes solving the radial and axial temperature profiles, as well as extending to a three-dimensional arrangement. The framework enables accurate and efficient prediction of transient temperature profiles for geothermal boreholes, facilitating thermal design and implementation of geothermal systems.
APPLIED THERMAL ENGINEERING
(2022)
Article
Construction & Building Technology
C. Castan-Fernandez, G. Marcos-Robredo, M. P. Castro-Garcia, M. A. Rey-Ronco, T. Alonso-Sanchez
Summary: Geothermal backfill plays a crucial role in geothermal energy systems, and choosing the right materials can improve system efficiency, reduce energy costs, and have economic and environmental significance.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Construction & Building Technology
Shuang Chen, Wanlong Cai, Francesco Witte, Xuerui Wang, Fenghao Wang, Olaf Kolditz, Haibing Shao
Summary: The study shows that in the long-term operation, an imbalance of thermal load in the BHE array can lead to a transfer of heat load and a linear correlation between the increase in working fluid temperature and the amount of accumulated heat injected into the subsurface.
ENERGY AND BUILDINGS
(2021)
Article
Green & Sustainable Science & Technology
Christopher S. Brown, Isa Kolo, Gioia Falcone, David Banks
Summary: Deep Borehole Heat Exchangers (DBHEs) are a potential method for geothermal resource development for carbon neutral heating. This study investigates the influence of array geometry, inter-borehole spacing, and operation mode on thermal performance and system efficiency using OpenGeoSys software. Results indicate the significant impact of geometry and operation mode on inter-borehole spacing and system performance.
Article
Construction & Building Technology
Nan Cheng, Chaohui Zhou, Yongqiang Luo, Junhao Shen, Zhiyong Tian, Deyu Sun, Jianhua Fan, Ling Zhang, Jie Deng, Marc A. Rosen
Summary: This study proposes a new design concept called the shallow-deep-mixed borehole heat exchanger (SD-BHE) array, which combines both shallow borehole heat exchangers (SBHEs) and deep borehole heat exchangers (DBHEs). The DBHE tube can be switched to an SBHE tube in the summer, solving the limitations of both SBHEs and DBHEs. The study finds that when the cooling load of a building is greater than the heating load, the SD-BHE array has less impact on the ground temperature and provides better stability of the outlet water temperature compared to the SBHE array.
ENERGY AND BUILDINGS
(2023)
Article
Green & Sustainable Science & Technology
Kimmo Korhonen, Abel Marko, Alan Bischoff, Mark Szijarto, Judit Madl-Szonyi
Summary: Deploying shallow geothermal solutions is crucial for meeting energy demands and decarbonisation targets, especially in urban areas. This paper presents a novel method, the infinite borehole field model, for estimating the technical shallow geothermal potential. The method considers thermal interactions between boreholes, using finite element models and mathematical optimisation to determine the annual thermal energy extraction while maintaining borehole wall temperature above freezing point. The results show the potential for significant energy production, with deeper, thermally independent boreholes performing better than those in an infinite borehole field.
Article
Green & Sustainable Science & Technology
Carolin Tissen, Kathrin Menberg, Susanne A. Benz, Peter Bayer, Cornelia Steiner, Gregor Gotzl, Philipp Blum
Summary: Decarbonizing the heating sector is crucial for reducing CO2 emissions, especially in Central European cities like Vienna. The GeoEnPy tool can evaluate anthropogenic heat input, sustainable potential, technical geothermal potential, and heat supply rate, guiding the integration of shallow geothermal use in urban energy management.
Article
Energy & Fuels
Tomasz Sliwa, Patryk Lesniak, Aneta Sapinska-Sliwa, Marc A. Rosen
Summary: This paper describes a study on the construction of borehole heat exchangers for geothermal heat pumps. The aim of the research is to determine the best design for these heat exchangers. The thermal efficiency is evaluated using parameters obtained from thermal response tests. The study finds that a single U-tube system filled with gravel is the most advantageous design.
Article
Energy & Fuels
Jakob Randow, Shuang Chen, Katrin Lubashevsky, Steve Thiel, Tom Reinhardt, Karsten Rink, Rudiger Grimm, Anke Bucher, Olaf Kolditz, Haibing Shao
Summary: Nowadays, there is an increasing interest in using shallow geothermal energy to heat and cool buildings in the building sector. Large borehole heat exchanger arrays are widely used to provide heat to different types of buildings. A case study in Berlin showed that the open-source code OpenGeoSys is a valid alternative to the widely used commercial software FEFLOW for modeling ground source heat pump systems.
Article
Thermodynamics
Ke Chen, Jia Zheng, Juan Li, Jingli Shao, Qiulan Zhang
Summary: In this study, three-dimensional geometric models of double-U borehole heat exchanger (BHE) and enhanced coaxial BHEs were established. The heat transfer performance and influencing factors of these two BHE models under different working conditions were simulated. The results showed that the enhanced coaxial BHE had better heat transfer performance than the equivalent U BHE, and the inlet temperature/inlet fluid heating power had the most significant impact on the heat transfer performance.
APPLIED THERMAL ENGINEERING
(2022)
Article
Chemistry, Multidisciplinary
Mohammed A. Hefni, Minghan Xu, Ferri Hassani, Seyed Ali Ghoreishi-Madiseh, Haitham M. Ahmed, Hussein A. Saleem, Hussin A. M. Ahmed, Gamal S. A. Hassan, Khaled I. Ahmed, Agus P. Sasmito
Summary: An analytical model is developed in this study to accurately predict the thermal performance of various geothermal borehole heat exchangers, including solar- and waste-heat-assisted systems. By extending the model from single boreholes to multiple boreholes using lines of symmetry, the temperature distribution along the center line is obtained. The analytical solution shows good agreement with a numerical model and field-scale experiments, demonstrating its efficiency and reliability in evaluating closed-loop geothermal BHEs.
APPLIED SCIENCES-BASEL
(2021)
Review
Energy & Fuels
Haohua Chen, Ingrid Tomac
Summary: This review paper summarizes recent developments in geothermal exploitation using coaxial deep borehole heat exchangers (DBHE). The paper discusses field tests, analytical and semi-analytical approaches, and numerical simulations. Future work should focus on long-term performance, effects of groundwater flow, technology for larger diameter boreholes, new materials for insulated inner pipe, treatment of fluid and different working fluids, and economic analysis. Analytical methods and numerical simulations should consider the dependence of fluid and formation properties on pressure and temperature. Optimizing borehole properties and pump parameters, using an insulated inner pipe, and modeling an intermittent working pattern could improve the performance of DBHE.
GEOMECHANICS AND GEOPHYSICS FOR GEO-ENERGY AND GEO-RESOURCES
(2023)
Article
Energy & Fuels
Joanna Piotrowska-Woroniak
Summary: This study aimed to verify specific ground thermal efficiency indicators adopted for the design of the lower heat source of borehole heat exchangers (BHE) through experimental tests. The research compared and analyzed the operating parameters of BHEs, including thermal energy absorption, temperature differentials, brine flow rates, and power output in two heating seasons. The data obtained in real conditions is valuable for the research and development of BHE systems.
Article
Thermodynamics
Stefano Morchio, Marco Fossa, Richard A. Beier
Summary: This paper focuses on modeling vertical Borehole Heat Exchangers for Ground Source Heat Pump applications and analyzing Thermal Response Test simulations. The traditional model neglects the influence of external heat transfer rate, leading to errors in estimating ground thermal conductivity. The errors are more pronounced for coaxial boreholes with significant geothermal gradients.
APPLIED THERMAL ENGINEERING
(2022)
Article
Energy & Fuels
Janvier Domra Kana, Noel Djongyang, Aretouyap Zakari, Njeudjang Kasi, Danwe Raidandi, Philippe Njandjock Nouck, William Teikeu Assastse, Tabod Charles Tabod
Summary: This paper focuses on the regional-scale assessment of low-enthalpy resources for cooling and heating in the Subsaharan area in Central Africa. By conducting ground investigations and using Geographic Information System, suitable locations for Ground Source Heat Exchanger and groundwater heat exchanger have been identified to reduce greenhouse gas emissions and save energy consumption.
GEOMECHANICS AND GEOPHYSICS FOR GEO-ENERGY AND GEO-RESOURCES
(2021)
Article
Engineering, Geological
Eike Radeisen, Hua Shao, Juergen Hesser, Olaf Kolditz, Wenjie Xu, Wenqing Wang
Summary: This study introduces a new approach to simulate gas flow in preferential pathways in radioactive waste repositories using continuous modelling methods and spatial material properties derived from material heterogeneities and experimental observations. The proposed model incorporates hydro-mechanical spatial distributions, such as Young's modulus and gas entry pressure, and employs elastoplasticity combined with a linear swelling model. A gas injection test in a compacted, saturated bentonite sample was simulated using the OpenGeoSys 5.8 opensource code and compared with experimental observations to validate the effectiveness of the presented approach. The results show that the methodology is capable of simulating localized gas flow in preferential pathways.
JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING
(2023)
Editorial Material
Environmental Sciences
Olaf Kolditz, Diederik Jacques, Francis Claret, Johan Bertrand, Sergey V. Churakov, Christophe Debayle, Daniela Diaconu, Kateryna Fuzik, David Garcia, Nico Graebling, Bernd Grambow, Erika Holt, Andres Idiart, Petter Leira, Vanessa Montoya, Ernst Niederleithinger, Markus Olin, Wilfried Pfingsten, Nikolaos I. Prasianakis, Karsten Rink, Javier Samper, Istvan Szoeke, Reka Szoeke, Louise Theodon, Jacques Wendling
Summary: Data science has become an important tool in various scientific and industrial fields, disrupting research methods. Machine learning methods have been developed to accelerate numerical simulations and applied to nuclear waste management. The challenge now is integrating multi-chemical-physical, coupled processes, multi-scale and probabilistic simulations in Digital Twins (DTw) to predict the performance of physical systems. The development of DTw concepts for geological systems in radioactive waste management is particularly challenging due to complexities and uncertainties at varying time and spatial scales.
ENVIRONMENTAL EARTH SCIENCES
(2023)
Article
Materials Science, Multidisciplinary
Vahid Ziaei-Rad, Mostafa Mollaali, Thomas Nagel, Olaf Kolditz, Keita Yoshioka
Summary: We propose a decomposition method for constitutive relations in the phase field approach to fracture, specifically designed for anisotropic/orthotropic materials to account for tension-compression asymmetry. This method retains the anisotropic behavior and tension-compression asymmetry in the crack response. In addition, we modify the energy release computation to accurately predict fracture propagation direction.
JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
(2023)
Article
Mechanics
Lei Zhang, Hongwei Zhou, Xiangyu Wang, Tengfei Deng, Chaofan Chen, Hao Zhang, Thomas Nagel
Summary: The visco-elastoplastic deformation of deep coal poses challenges for gas control in high-stress environments. In this study, a fractional visco-elastoplastic constitutive model is established by combining the fractional Burgers model with a nonassociated Drucker-Prager elastoplastic model. The numerical model is verified against analytical solutions and experimental data, and is used to analyze the stress-strain evolution of deep coal. The study provides theoretical support for understanding the visco-elastoplastic deformation of deep coal.
MECHANICS OF TIME-DEPENDENT MATERIALS
(2023)
Article
Computer Science, Interdisciplinary Applications
Dulguun Narmandakh, Christoph Butscher, Faramarz Doulati Ardejani, Huichen Yang, Thomas Nagel, Reza Taherdangkoo
Summary: This article presents the use of neural network models to predict the swelling potential of clay soils, including both natural and artificial soils. The models were trained using the Levenberg-Marquardt algorithm and validated with experimental data, showing that the feed-forward neural network trained with this algorithm is the most accurate.
COMPUTERS AND GEOTECHNICS
(2023)
Article
Geosciences, Multidisciplinary
Min Chen, Christophe Claramunt, Arzu coltekin, Xintao Liu, Peng Peng, Anthony C. Robinson, Dajiang Wang, Josef Strobl, John P. Wilson, Michael Batty, Mei-Po Kwan, Maryam Lotfian, Francois Golay, Stephane Joost, Jens Ingensand, Ahmad M. Senousi, Tao Cheng, Temenoujka Bandrova, Milan Konecny, Paul M. Torrens, Alexander Klippel, Songnian Li, Fengyuan Zhang, Li He, Jinfeng Wang, Carlo Ratti, Olaf Kolditz, Hui Lin, Guonian Lue
Summary: In recent decades, advances in the Internet of Things, mobile devices, sensor-based systems, and big data infrastructures have significantly influenced human interaction in both the digital and physical world. This has led to a paradigm shift in GIScience, as cyberspace offers new perspectives on the role of spatial and temporal dimensions. This paper highlights the challenges and opportunities of geographical space in relation to cyberspace, specifically focusing on data analytics and visualization, including extended AI capabilities and virtual reality representations. It emphasizes the importance of synergy between geographic and cyber data processing and analysis to enhance sustainability and address complex problems in urban and environmental sciences.
EARTH-SCIENCE REVIEWS
(2023)
Article
Environmental Sciences
Tengfei Deng, Olaf Hellwig, Felix Hlousek, Dominik Kern, Stefan Buske, Thomas Nagel
Summary: Extensive mine dumps created by open-pit lignite mining pose a risk of soil liquefaction under high water saturation. Soil compaction can reduce liquefaction probability, and seismic survey methods can complement other techniques for monitoring and evaluating compaction work. A customizable code based on Biot's theory was developed to consider partial saturation and porosity dependence, providing a framework for analyzing compaction works and monitoring liquefiable soils in mine dumps under changing saturation conditions due to rising groundwater tables.
ENVIRONMENTAL EARTH SCIENCES
(2023)
Article
Environmental Sciences
Michael Pitz, Norbert Grunwald, Bastian Graupner, Kata Kurgyis, Eike Radeisen, Jobst Massmann, Gesa Ziefle, Jan Thiedau, Thomas Nagel
Summary: This paper discusses the thermo-hydro-mechanically (THM) coupled processes that occur during the construction, operation, and closure of a deep geological repository for high-level radioactive waste. The authors use a numerical model to simulate the non-isothermal two-phase flow in deformable porous media. The results of the simulations agree well with benchmark tests and demonstrate the suitability of the model for analyzing the safety and integrity of radioactive waste disposal systems.
ENVIRONMENTAL EARTH SCIENCES
(2023)
Article
Environmental Sciences
Victor Malkovsky, Thomas Nagel, Dominik Kern, Fabien Magri
Summary: A 3D numerical simulation is conducted to study the migration of radionuclides from a potential repository of solid radioactive waste in the Krasnoyarsk region, Siberia, Russia. The simulation models take into account the actual topography and hydraulic conductivity heterogeneity of the area. The results indicate that latitudinal faults can pose a significant ecological hazard depending on the distance between the repository and the fault.
ENVIRONMENTAL MODELING & ASSESSMENT
(2023)
Article
Mechanics
Jinlong Li, Song Zhu, Jia Liu, Daosheng Ling, Wenjie Xu, Yunmin Chen, Liangtong Zhan, Qingdong Li, Zexu Ning, Xilin Shi, Yinping Li, Thomas Nagel
Summary: In recent years, the importance of fluid convection in environmental problems has been increasingly recognized. Scaled physical modeling is a valuable tool for understanding fluid convection in nature. However, conflicting similarity criteria often lead to errors. In this study, we propose using hypergravity to improve the scaling similarity of gravity-dominated fluid convection. The approach is validated through experiments on water-brine buoyant jet under hypergravity created by a centrifuge. We also present an evaluation and correction method considering the Coriolis force.
Article
Engineering, Geological
Song Wang, Jian Zhou, Luqing Zhang, Thomas Nagel, Zhenhua Han, Yanlong Kong
Summary: In this study, a novel hydro-GBM is constructed to analyze the hydraulic fracturing response of polycrystalline rocks by combiningGBM and a modified fluid-solid coupling algorithm. The research results reveal that the propagation direction of hydraulic fractures is mainly perpendicular to the direction of minimum in-situ stress, and the fracture pattern tends to be complex under near-hydrostatic in-situ stress conditions, especially when a low-viscosity fluid is injected into the rock. The large induced seismic events increase with in-situ stress and with fluid viscosity.
ROCK MECHANICS AND ROCK ENGINEERING
(2023)
Article
Computer Science, Software Engineering
Chiara Hergl, Thomas Nagel, Gerik Scheuermann
Summary: Tensorial data is widely used in various fields such as physics, medicine, earth sciences, mechanical engineering, geo-engineering, and bio-engineering. This article proposes the use of deviatoric decomposition to visualize tensors of arbitrary order in three dimensions. Examples of symmetric second-order and fourth-order tensor fields are provided.
IEEE TRANSACTIONS ON VISUALIZATION AND COMPUTER GRAPHICS
(2023)
Article
Engineering, Geological
Michael Pitz, Sonja Kaiser, Norbert Grunwald, Vinay Kumar, Joerg Buchwald, Wenqing Wang, Dmitri Naumov, Aqeel Afzal Chaudhry, Jobst Massmann, Jan Thiedau, Olaf Kolditz, Thomas Nagel
Summary: This paper presents the governing equations of non-isothermal two-phase flow in unsaturated, deformable porous media based on different representations of the gaseous phase. Two implementations, using the Richards equation and a two-component two-phase flow formulation, are illustrated through a series of tests to examine the impact of a free gaseous phase on model predictions. The examples considered thermal consolidation and pore fluid pressurisation effects, providing insights into conceptual model uncertainty.
INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES
(2023)
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)
