Article
Thermodynamics
Abdulmajeed Alenezi, Gokul Chandrasekaran, Cameron Noe, Patrick Phelan
Summary: The aim of this study was to investigate the effects of an applied ultrasonic field on heat transfer and pressure drop in a circular minichannel heat sink. The experimental results showed a significant enhancement in heat transfer coefficient under ultrasound, while the effect on pressure drop was minimal. These findings provide evidence that ultrasound is an effective technique for enhancing heat transfer in minichannel heat sinks.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2023)
Article
Thermodynamics
Yacine Khetib, Khaled Sedraoui, Abdellataif Gari
Summary: This study numerically investigated a micro-pin-fin heat sink to improve its cooling capability and productivity. It found that the RS configuration had the maximum heat transfer while also yielding the maximum pressure drop.
CASE STUDIES IN THERMAL ENGINEERING
(2021)
Article
Thermodynamics
Yi Peng, Zhibin Li, Shaobo Li, Bin Cao, Xuan Wu, Xianfeng Zhao
Summary: The paper presents a zigzag-serpentine microchannel heat sink (ZSMHS) designed to study heat transfer and hydraulic performance through experiments. Different angles of the zigzag microchannel were investigated, with 30 degrees providing the lowest pressure drop, friction coefficient, and thermal resistance. The serpentine microchannel improved the hydraulic performance of the ZSMHS.
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2021)
Article
Thermodynamics
Di Qi, Jing He, Yongsheng Xu, Mei Lin, Qiuwang Wang
Summary: This study analyzed the design and performance of a ribbed channel heat sink, showing that increasing the rib diameter can improve heat transfer efficiency. The comprehensive heat transfer performance factor shows different trends under different heat flux densities and rib diameters, with the best heat transfer performance occurring at a rib diameter of 10mm.
Review
Thermodynamics
Daxiang Deng, Long Zeng, Wei Sun
Summary: This paper comprehensively reviews recent advancements in flow boiling enhancement and fabrication of enhanced microchannels. It emphasizes the flow boiling enhancement performance of these enhanced microchannels in microchannel heat sinks, while also discussing their advantages and disadvantages after summarizing the classification and manufacturing methods of enhanced microchannels.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2021)
Article
Thermodynamics
Zengkun Zhan, Lixia Chen, Hongna Zhang, Chuandong Lin, Sining Li, Xiaobin Li, Fengchen Li
Summary: This research proposes a new technique for heat transfer enhancement using viscoelastic fluid pulsating laminar flow (VPL flow). Numerical studies and flow performance analysis show that VPL flow significantly improves the overall heat transfer performance, with optimal enhancement achieved at pulsation frequencies close to the characteristic frequency of the viscoelastic fluid flow.
APPLIED THERMAL ENGINEERING
(2022)
Article
Thermodynamics
G. Marseglia, M. G. De Giorgi, P. Pontes, R. Solipa, R. R. Souza, A. L. N. Moreira, A. S. Moita
Summary: This paper investigates the advantages and challenges of two-phase flows, specifically flow boiling of pure liquids and nanofluids, for cooling microchannel heat sinks. The study finds that even at low concentrations, the water-Au nanofluid exhibits superior cooling performance compared to other fluids, indicating that even small concentrations of nanoparticles can significantly impact heat transfer mechanisms.
EXPERIMENTAL THERMAL AND FLUID SCIENCE
(2024)
Article
Thermodynamics
Rahul Ray, Aurovinda Mohanty, Pandab Patro, Kartik Chandra Tripathy
Summary: This study conducts a performance analysis of branched and interrupted fin heat sinks using numerical simulations to explore the possibility of enhancing heat transfer efficiency. The design that places the secondary fins symmetrically and at the farthest position from the base plate shows the best heat dissipation performance.
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2022)
Article
Thermodynamics
Xin Cao, Huan-ling Liu, Xiao-dong Shao, Hang-bo Shi
Summary: This paper proposes a novel mini-channel heat sink with tessellated fins and investigates its heat cooling capacity numerically and experimentally. The results show that the new design is more conductive to heat transfer and optimized designs can further improve thermal performance and uniform substrate temperature.
APPLIED THERMAL ENGINEERING
(2022)
Article
Physics, Applied
Nithin Vinod Upot, Kazi Fazle Rabbi, Alireza Bakhshi, Johannes Kohler Mendizabal, Anthony M. Jacobi, Nenad Miljkovic
Summary: Incorporating micro- and nanostructures on metals can greatly improve thermal performance, as demonstrated in this study with copper and stainless steel. Two highly scalable and cost-effective methods were used to create these structures, resulting in significant improvements in flow boiling heat transfer coefficient. The presence of micro/nanoscale channels helps regulate heat transfer mechanisms and the structures are resilient to damage, making them suitable for broader application.
APPLIED PHYSICS LETTERS
(2023)
Article
Nuclear Science & Technology
Xiang Zhou, Chen Zeng, Yinxi Song, Ming Jiao, Feixi Zhang, Maolong Liu
Summary: This study experimentally investigates the heat transfer and resistance characteristics of a microchannel heat exchanger with zigzag flow channels. By analyzing the influence of various experimental parameters, correlations of heat transfer coefficient and flow resistance factor are established. The research results can be used to validate the CFD simulation and design of this type of heat exchanger.
PROGRESS IN NUCLEAR ENERGY
(2022)
Article
Energy & Fuels
Yue Wang, Jiahao Wang, Xiaomin Liu
Summary: In this study, an innovative method for the topology optimization design of micro-channel structures with different bifurcation angles is adopted. The effect of the target weight coefficient on the structure design of the micro-channel heat sink is investigated. The results show that the heat transfer effect is the best when the bifurcation angle is 135 degrees, and the heat transfer weighting coefficient affects the distribution of solid heat sources in the main channel and the refinement of the branch channels.
Article
Thermodynamics
Lingfeng Yu, Jiajun Zhang, Xiaoling Wu, Jianming Huang, Limin Hu, Lei Shi, Yuan Dong, Kai Chen, Bingyang Cao
Summary: In this study, a flow resistance network (FRN) model is developed to optimize the structure of three-dimensional liquid-cooled parallel micro-channel heat sinks (PMCHSs). By determining the optimized channel widths and inlet deflector shape based on a uniform flow rate distribution, the optimized PMCHSs can reduce the maximum temperature (Tmax) by 4.0 K and temperature standard deviation (σT) by 20%. The optimization method using the developed FRN model avoids multiple iterations of system parameters in existing methods, showing its potential for high-efficient thermal management of electronics.
APPLIED THERMAL ENGINEERING
(2023)
Article
Chemistry, Analytical
Heng Zhao, Honghua Ma, Xiang Yan, Huaqing Yu, Yongjun Xiao, Xiao Xiao, Hui Liu
Summary: This research paper investigates the laminar flow and heat transfer characteristics of a micro-channel heat sink with a variable geometry rectangular fin through computational fluid dynamics analysis. The results show that the heat sink with a variable geometry rectangular fin has better heat dissipation capacity but also larger pressure loss.
Article
Thermodynamics
Jingtan Chen, Shakeel Ahmad, Wei Deng, Junjie Cai, Jiyun Zhao
Summary: In this study, an advanced micro/nanoscale surface modification design for microchannel heat sink (MCHS) is proposed and analyzed using the Lattice Boltzmann method (LBM). The effects of surface wettability and micropillar on MCHS heat transfer performance are investigated, and design-based suggestions are made. The results provide valuable guidance for MCHS design and enhance understanding of the flow boiling process.
APPLIED THERMAL ENGINEERING
(2022)
Article
Thermodynamics
Guodong Xia, Yue Cheng, Lixin Cheng, Yifan Li
HEAT TRANSFER ENGINEERING
(2019)
Article
Thermodynamics
Lixin Cheng, Guodong Xia, Qinling Li, John R. Thome
HEAT TRANSFER ENGINEERING
(2019)
Article
Thermodynamics
G. D. Xia, Y. X. Tang, L. X. Zong, D. D. Ma, Y. T. Jia, R. Z. Rong
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2019)
Article
Thermodynamics
Guodong Xia, Yuanzheng Lv, Lixin Cheng, Dandan Ma, Yuting Jia
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2019)
Article
Thermodynamics
Guodong Xia, Yuanzheng Lv, Dandan Ma, Yuting Jia
APPLIED THERMAL ENGINEERING
(2019)
Article
Thermodynamics
Yuanzheng Lv, Guodong Xia, Lixin Cheng, Dandan Ma
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2019)
Article
Thermodynamics
L. X. Zong, G. D. Xia, Y. T. Jia, L. Liu, D. D. Ma, J. Wang
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2020)
Article
Thermodynamics
Y. F. Li, G. D. Xia, D. D. Ma, J. L. Yang, W. Li
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2020)
Article
Chemistry, Physical
Fan Li, Jun Wang, Guodong Xia
JOURNAL OF PHYSICAL CHEMISTRY C
(2020)
Article
Mechanics
Kexue Zhang, Liyuan Xu, Yunyun Li, Fabio Marchesoni, Jun Wang, Guodong Xia
Summary: This study investigates the self-propulsion of a Janus particle suspended in a dilute gas at equilibrium and confirms the analytical results through numerical simulations.
Article
Mechanics
Wangwang Liu, Jie Cui, Jun Wang, Guodong Xia, Zhigang Li
Summary: In this study, the negative thermophoresis of nanoparticles in liquids, which is usually from low to high temperature, is investigated using molecular dynamics simulations. The strength of solid-liquid intermolecular coupling was found to have a significant effect on the direction and magnitude of the thermophoretic force. Negative thermophoresis is induced by a density gradient that pushes the particles from high to low density. The sign change of the averaged potential mean force for the interfacial layer can be used as a criterion to predict the occurrence of negative thermophoresis. These findings provide insights for the microscopic manipulation of nanoparticles.
Article
Mechanics
Ran Li, Ziqing Yan, Guodong Xia
Summary: This study reports a novel investigation of the inter-pore interference effect in nano-porous evaporation, elucidating the changes in the net evaporation rate from individual nanopores when the inter-pore distance, neighboring nanopore diameter, or liquid temperature were varied. Molecular simulation results reveal that reducing inter-pore distance can enhance evaporation rate by increasing vapor convection effect and suppressing condensation flux. This interference effect is more pronounced at lower evaporation intensity, with the evaporation flux differing by up to 25% from the one-dimensional case.
Article
Mechanics
Wangwang Liu, Jun Wang, Guodong Xia, Zhigang Li
Summary: The thermophoresis of nanoparticles suspended in gas in the transition regime was investigated through molecular dynamics simulations. It was found that there was a significant discrepancy between the simulation results and theoretical predictions for the thermophoretic force, which was attributed to the adsorption of gas molecules on nanoparticles and the gas-particle non-rigid body collisions. By using the effective particle radius, the simulation results and Talbot et al.'s equation were found to agree with each other. The investigation presented in this paper provides guidance for the application of nanoparticles in aerosol science.
Article
Physics, Fluids & Plasmas
Jun Wang, Junjie Su, Guodong Xia
Article
Chemistry, Multidisciplinary
Fan Li, Jun Wang, Guodong Xia, Zhigang Li
Article
Thermodynamics
Pengcheng Zhao, Jingang Wang, Liming Sun, Yun Li, Haiting Xia, Wei He
Summary: The production of green hydrogen through water electrolysis is crucial for renewable energy utilization and decarbonization. This research explores the optimal electrode configuration and system design of compactly-assembled industrial electrolyzer. The findings provide valuable insights for industrial application of water electrolysis equipment.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
V. Baiju, P. Abhishek, S. Harikrishnan
Summary: Thermally driven adsorption desalination systems (ADS) have gained attention as an eco-friendly solution for water scarcity. However, they face challenges related to low water productivity and scalability. To overcome these challenges, integrating ADS with other desalination technologies can create a small-scale hybrid system. This study proposes integrating ADS with a Thermo Electric Dehumidification (TED) unit to enhance its performance.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
C. X. He, Y. H. Liu, X. Y. Huang, S. B. Wan, Q. Chen, J. Sun, T. S. Zhao
Summary: A decentralized centroid multi-path RC network model is constructed to improve the temperature prediction accuracy compared to traditional RC models. By incorporating multiple heat flow paths and decentralizing thermal capacity, a more accurate prediction is achieved.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Chaoying Li, Meng Wang, Nana Li, Di Gu, Chao Yan, Dandan Yuan, Hong Jiang, Baohui Wang, Xirui Wang
Summary: There is an urgent need to shift away from heavy dependence on fossil fuels and embrace renewable energy sources, particularly in the energy-intensive oil refining process. This study presents an innovative concept called the Solar Oil Refinery, which applies solar energy in oil refining. A solar multi-energies-driven hybrid chemical oil refining system that utilizes solar pyrolysis and electrolysis has been developed, significantly improving solar utilization efficiency, cracking rate, and hydrogen yield.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Chao Ma, Guanghui Wang, Dingbiao Wang, Xu Peng, Yushen Yang, Xinxin Liu, Chongrui Yang, Jiaheng Chen
Summary: This study proposes a bio-inspired fish-tail wind rotor to improve the wind power efficiency of the traditional Savonius rotor. Through transient simulations and orthogonal experiments, the key factors affecting the performance are identified. A response surface model is constructed to optimize the power coefficient, resulting in an improvement of 9.4% and 6.6% compared to the Savonius rotor.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Sina Bahmanziari, Abbas-Ali Zamani
Summary: This paper proposes a new framework for improving electrical energy harvesting from piezoelectric smart tiles through a combination of magnetic plucking, mechanical impact, and mechanical vibration force mechanisms. Experimental results demonstrate a significant increase in energy yield and average energy harvesting time compared to other mechanisms.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Nanjiang Dong, Tao Zhang, Rui Wang
Summary: This study establishes a multiobjective mixed-variable configuration optimization model for a comprehensive combined cooling, heating, and power energy system, and proposes an efficient generating operator to optimize this model. The experimental results show that the proposed algorithm performs better than other state-of-the-art algorithms.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Ahmed E. Mansy, Eman A. El Desouky, Tarek H. Taha, M. A. Abu-Saied, Hamada El-Gendi, Ranya A. Amer, Zhen-Yu Tian
Summary: This study aims to convert office paper waste into bioethanol through a sustainable pathway. The results show that physiochemical and enzymatic hydrolysis of the waste can yield a high glucose concentration. The optimal conditions were determined using the Box-Behnken design, and a blended membrane was used for ethanol purification.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Sven Klute, Marcus Budt, Mathias van Beek, Christian Doetsch
Summary: Heat pumps are crucial for decarbonizing heat supply, and steam generating heat pumps have the potential to decarbonize the industrial sector. This paper presents the current state, technical and economic data, and modeling principles of steam generating heat pumps.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Le Zhang, To-Hung Tsui, Yen Wah Tong, Pruk Aggarangsi, Ronghou Liu
Summary: This study investigates the effectiveness of a current-carrying-coil-based magnetic field in promoting anaerobic digestion of chicken manure. The results show that the applied magnetic field increases methane yield, decreases carbon dioxide production, and reduces the concentration of ammonia nitrogen. Microbial community analysis reveals the enrichment of certain methanogenic genera and enhanced metabolic pathways. Pilot-scale experiments confirm the technical effectiveness of the magnetic field assistance in enhancing anaerobic digestion of chicken manure.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Bo Chen, Ruiqing Ma, Yang Zhou, Rui Ma, Wentao Jiang, Fan Yang
Summary: This paper presents an advanced energy management strategy for fuel cell hybrid electric heavy-duty vehicles, focusing on speed planning and energy allocation. By utilizing predictive co-optimization control, this strategy ensures safe inter-vehicle distance and minimizes energy demand. Simulation results demonstrate the effectiveness of the proposed method in reducing fuel cell degradation cost and overall operation cost.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Fabio Fatigati, Roberto Cipollone
Summary: Organic Rankine Cycle-based microcogeneration systems that use solar sources to generate electricity and hot water can help reduce CO2 emissions in residential energy-intensive sectors. The adoption of a recuperative heat exchanger in these systems improves efficiency, reduces thermal power requirements, and saves on electricity costs.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Lipeng He, Renwen Liu, Xuejin Liu, Xiaotian Zheng, Limin Zhang, Jieqiong Lin
Summary: This research proposes a piezoelectric-electromagnetic hybrid energy harvester (PEHEH) for low-frequency wave motion and self-sensing wave environment monitoring. The PEHEH shows promising power output and the ability to self-power and self-sense the wave environment.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Shangling Chu, Yang Liu, Zipeng Xu, Heng Zhang, Haiping Chen, Dan Gao
Summary: This paper studies a distributed energy system integrated with solar and natural gas, analyzes the impact of different parameters on its energy utilization and emissions reduction, and obtains the optimal solution through an optimization algorithm. The results show that compared to traditional separation production systems, this integrated system achieves higher energy utilization and greater reduction in carbon emissions.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Qingpu Li, Yaqi Ding, Guangming Chen, Yongmei Xuan, Neng Gao, Nian Li, Xinyue Hao
Summary: This paper proposes and studies a piston-type thermally-driven pump with a structure similar to a linear compressor, aiming to eliminate the high-quality energy consumption of existing pumps and replace mechanical pumps. The coupling mechanism of working fluid flow and element dimension is analyzed based on force analysis, and experimental data analysis is used to determine the pump operation stroke. Theoretical simulation is conducted to analyze the correlation mechanism of the piston assembly. The research shows that the thermally-driven pump can greatly reduce power consumption and has potential for industrial applications.
ENERGY CONVERSION AND MANAGEMENT
(2024)