Article
Thermodynamics
Yanhong Sun, Ao Huang, Jinli Lu, Yuyan Jiang
Summary: This study experimentally investigated the heat transfer characteristics and dynamic flow boiling instabilities of ethanol in a rectangular microchannel. The results showed that the inhibition of bubble nucleation caused by large bubbles in the confined space led to a deterioration in heat transfer performance. Higher mass flux resulted in more effective bubble nucleation and better heat transfer. The triggering of flow boiling instability in the microchannel was strongly dependent on quasi-periodical flow phenomenon and multiphase alternation. The thermophysical properties of the working liquid significantly affected the fluctuation amplitude.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2024)
Article
Thermodynamics
Juncheng Qiu, Jianhong Zhou, Qi Zhao, Hanshi Qin, Xuemei Chen
Summary: Researchers introduced biomimetic microchannels inspired by cobweb structures for enhancing flow boiling heat transfer performance. The cobweb-shaped microchannels demonstrated improved heat transfer coefficient and lower wall temperature due to flow disturbance and increased heat transfer area. Among them, the cobweb-shaped microchannels with horizontal inlet and outlet showed the best heat transfer performance and most stable flow boiling behavior particularly at high heat flux.
CASE STUDIES IN THERMAL ENGINEERING
(2021)
Article
Thermodynamics
Juncheng Qiu, Qi Zhao, Mingxiang Lu, Jianhong Zhou, Dinghua Hu, Hanshi Qin, Xuemei Chen
Summary: In this study, stepped oblique-finned microchannels (SOFMC) were designed to enhance heat transfer performance compared to rectangular microchannels (RMC). The combination of steps and oblique fins in SOFMC effectively suppressed flow boiling instabilities and improved heat transfer performance.
CASE STUDIES IN THERMAL ENGINEERING
(2022)
Article
Thermodynamics
Houpei Li, Pega Hrnjak
Summary: This paper presents the measurements of flow boiling heat transfer coefficient and pressure gradient for R32 and R1234yf mixtures in a microchannel tube. The results show that mass flux has a significant effect on both heat transfer coefficient and pressure gradient, while heat flux only affects the heat transfer coefficient. Furthermore, the temperature glide curve has an impact on the heat transfer coefficient.
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2022)
Article
Thermodynamics
Kai Fu, Wuhuan Gao, Xianghua Xu, Xingang Liang
Summary: This study experimentally investigates the flow boiling phenomenon of water in a copper foam fin microchannel (FFMC) heat sink. The results show that the heat transfer coefficient of the FFMC is improved by 80%, and the pressure drop is increased by 1.2 to 2 times compared to a solid fin microchannel (SFMC) heat sink. Furthermore, the critical heat flux of the FFMC is improved by 25% and the flow instability is significantly mitigated.
APPLIED THERMAL ENGINEERING
(2023)
Article
Thermodynamics
D. D. Ma, Y. X. Tang, G. D. Xia
Summary: The sinusoidal wavy microchannels with secondary channels (SWSC) show better heat removal performance in flow boiling studies compared to conventional microchannels, thanks to increased bubble nucleation induced by enlarged surface area and continuous development of thin liquid film due to the introduction of secondary channels. However, the SWSC microchannels suffer from a higher pressure drop penalty.
APPLIED THERMAL ENGINEERING
(2021)
Article
Thermodynamics
Xiao Cheng, Huiying Wu
Summary: Inlet subcooling plays a crucial role in flow boiling heat transfer in microchannels. Higher subcooling degrees lead to boiling hysteresis and greater heat required for bubble nucleation, while lower subcooling degrees mitigate flow reversal and enhance flow boiling stability.
EXPERIMENTAL THERMAL AND FLUID SCIENCE
(2023)
Article
Thermodynamics
Ali H. Al-Zaidi, Mohamed M. Mahmoud, Tassos G. Karayiannis
Summary: The study experimentally investigated the influence of channel aspect ratio on flow boiling characteristics of HFE-7100 in copper multi-microchannel heat sinks. It found that increasing channel aspect ratio led to higher heat transfer coefficient and lower flow boiling pressure drop, but the heat transfer rate was higher in the heat sink with the smallest aspect ratio due to its larger surface area.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2021)
Article
Thermodynamics
Ziliang Rui, Hong Sun, Jie Ma, Hao Peng
Summary: This study investigates the flow boiling of SDS aqueous solution in straight and tree-shaped microchannels and its effect on heat transfer and pressure drop. The results show that SDS can enhance heat transfer, suppress the formation of vapor slugs, and promote rewetting of the channel surface. Additionally, SDS can extend the stable nucleate boiling state. Increasing SDS concentration leads to higher pressure drop and pressure drop fluctuation, but increasing volume flow rate can mitigate these effects.
Article
Thermodynamics
Jiaojiao Zhuang, Hao Yu, He Tianbiao, Mao Ning
Summary: This study experimentally investigates the flow characteristics, including pressure drop and flow pattern, in a microchannel when the heat flux suddenly increases. It is found that adjusting the mass flux and inlet temperature can reduce the intensity of pressure drop fluctuations, and a higher heat flux increase leads to a more rapid bubble generation and phase change phenomenon.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2022)
Article
Thermodynamics
Bolin He, Xiaoping Luo, Fan Yu, Tengfei Li, Liangfeng Wang, Jianyang Zhou, Yijie Fan
Summary: A bi-porous mini-channel is developed by sintering copper woven tapes on channel surfaces to improve flow boiling heat transfer. Experimental results show that the bi-porous mini-channel triggers nucleate boiling at smaller heat flux conditions compared to a mini-channel with planar surfaces under different inlet subcoolings. The boiling hysteresis phenomenon is eliminated in the bi-porous mini-channel under the same conditions. However, the obvious inlet backflow phenomenon observed under high heat flux conditions may deteriorate the heat transfer performance.
APPLIED THERMAL ENGINEERING
(2023)
Article
Thermodynamics
Chinmaya Kumar Patra, Anandaroop Bhattacharya, Prasanta Kumar Das
Summary: A 1-D transient model is developed to study the flow boiling in a rectangular microchannel and its effects on pressure drop and heat transfer characteristics, with a focus on nucleation frequency and compressible buffer volume.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Vivian Y. S. Lee, Tassos G. Karayiannis
Summary: The effect of system pressure on the flow boiling characteristics of HFE-7200 in a parallel microchannel heat sink was studied. Increasing pressure reduced pressure drop and increased bubble generation frequency and two-phase heat transfer coefficients. Smaller bubble diameters at higher pressures caused a delay in flow regime transition and flow reversal. The experimental work provides promising methods to manage flow instabilities and enhance heat transfer performance in two-phase microchannel systems.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2023)
Article
Thermodynamics
Ali H. Al-Zaidi, Mohamed M. Mahmoud, Tassos G. Karayiannis
Summary: This paper presents an experimental study on flow boiling patterns, heat transfer rates, and pressure drop in multi-microchannels evaporators made of copper and aluminium. The results showed that aluminium heat sinks have comparable thermal performance to that of copper heat sinks.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2022)
Article
Thermodynamics
Jingzhi Zhang, Jun An, Li Lei, Xinyu Wang, Gongming Xin, Zan Wu
Summary: This paper numerically studied the subcooled flow boiling in MMC heat sinks. The feasibility of using the Mixture multiphase flow model to simulate the subcooled flow boiling in the MMC heat sink is validated. The results show that the temperature distribution in the MMC heat sink is affected by the microchannel aspect ratio and the Mixture model is suitable for studying flow boiling in complex MMC.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2023)
Article
Thermodynamics
Baoshan Zhuang, Wenjun Deng, Yong Tang, Xinrui Ding, Kaihang Chen, Guisheng Zhong, Wei Yuan, Zongtao Li
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2019)
Article
Engineering, Multidisciplinary
Huang ShiMin, Luo Jian, Yuan Wei, Zhao BoTe, Chen Yu, Tang Yong
SCIENCE CHINA-TECHNOLOGICAL SCIENCES
(2019)
Article
Thermodynamics
Yalong Sun, Shiwei Zhang, Wei Yuan, Yong Tang, Jingrong Li, Kairui Tang
APPLIED THERMAL ENGINEERING
(2019)
Article
Thermodynamics
Guoyun Fang, Wei Yuan, Zhiguo Yan, Yalong Sun, Yong Tang
APPLIED THERMAL ENGINEERING
(2019)
Article
Green & Sustainable Science & Technology
Shiwei Zhang, Jieling Chen, Yalong Sun, Jie Li, Jian Zeng, Wei Yuan, Yong Tang
Article
Energy & Fuels
Wei Yuan, Zhiqiang Qiu, Yao Huang, Chun Wang, Honglin Huang, Yang Yang, Xiaoqing Zhang, Jian Luo, Yong Tang
Article
Chemistry, Multidisciplinary
Wei Yuan, Baoyou Pan, Zhiqiang Qiu, Ziming Peng, Yintong Ye, Yao Huang, Honglin Huang, Yong Tang
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2019)
Article
Thermodynamics
Shiwei Zhang, Lang Lin, Gong Chen, Heng Tang, Jian Zeng, Wei Yuan, Yong Tang
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2019)
Article
Engineering, Manufacturing
Wei Yuan, Ziyi Zhuang, Biaowu Lu, Guoyun Fang, Wenjun Chen, Yong Tang
IEEE TRANSACTIONS ON COMPONENTS PACKAGING AND MANUFACTURING TECHNOLOGY
(2019)
Article
Green & Sustainable Science & Technology
Guisheng Zhong, Yong Tang, Xinrui Ding, Longshi Rao, Gong Chen, Kairui Tang, Wei Yuan, Zongtao Li
Review
Energy & Fuels
Yang Yang, Wei Yuan, Xiaoqing Zhang, Yuhang Yuan, Chun Wang, Yintong Ye, Yao Huang, Zhiqiang Qiu, Yong Tang
Article
Engineering, Environmental
Wei Yuan, Zhiqiang Qiu, Chun Wang, Yuhang Yuan, Yang Yang, Xiaoqing Zhang, Yintong Ye, Yong Tang
CHEMICAL ENGINEERING JOURNAL
(2020)
Article
Chemistry, Physical
Xiaoqing Su, Wei Yuan, Biaowu Lu, Tianxiang Zheng, Yuzhi Ke, Ziyi Zhuang, Yonghao Zhao, Yong Tang, Shiwei Zhang
JOURNAL OF POWER SOURCES
(2020)
Article
Energy & Fuels
Biaowu Lu, Wei Yuan, Xiaoqing Su, Ziyi Zhuang, Yuzhi Ke, Yong Tang
Article
Chemistry, Multidisciplinary
Guoyun Fang, Yao Huang, Wei Yuan, Yang Yang, Yong Tang, Weida Ju, Fujian Chu, Zepeng Zhao
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)