Article
Thermodynamics
Roman W. Morse, Jason Chan, Tiago A. Moreira, Jared J. Valois, Evan T. Hurlburt, Jean-Marie Le Corre, Arganthael Berson, Kristofer M. Dressler, Gregory F. Nellis
Summary: This study investigates the dryout of liquid film and the role of disturbance wave frequency. Experimental results indicate that the heat transfer coefficient associated with optimal boiling conditions is maximized when the surface is dry 5% of the time, independent of pulse amplitude and frequency. Liquid-film measurements, dryout statistics, and direct observation suggest that disturbance-wave frequency can be manipulated by density-wave oscillations in the flow field.
EXPERIMENTAL THERMAL AND FLUID SCIENCE
(2024)
Article
Thermodynamics
Akshay B. Padalkar, Mangesh B. Chaudhari, Kiran B. Kore, Shivkumar R. Newaskar, Dhanaraj S. Nilegave, Adinath M. Funde
Summary: This study aims to improve the forced air cooling effectiveness for high-capacity batteries at high discharge rates, reducing auxiliary power consumption without compromising the compactness of the battery pack. By using circumferential fins, the surface area of the battery pack is increased, improving heat dissipation and reducing auxiliary power consumption.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Sangmu Bae, Hobyung Chae, Namjin Lyu, Yujin Nam
Summary: This study proposed a PVT-ASC module with a simplified manufacturing process to reduce initial investment cost, and evaluated its thermal efficiency, economics, and environmental benefits compared to commercial products. Field test results showed that the thermal efficiency of PVT-ASC was 41%, and it reduced total cost and CO2 emissions by 39% and 28% respectively, compared to commercial products.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Yongliang Shen, Shuli Liu, Haibo Jin, Abdur Rehman Mazhar, Shaoliang Zhang, Tingsen Chen, Yihan Wang
Summary: This study applies porous media composite phase change materials (CPCMs) to cascaded latent heat storage (CLHS) system to improve heat transfer rate, and compares the influences of porosity and heat transfer fluid (HTF) inlet boundary conditions on the system performance. It is found that porosity is the key factor affecting charging and discharging rates, but its impact on energy and exergy charge/discharge rates is not monotonic. The effect of HTF inlet temperature and velocity on the system is complex.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Qiaoxin Zhang, Rang Tu, Xu Yang
Summary: This paper analyzes the energy consumption of air conditioning systems in electric vehicles and proposes a novel design that utilizes natural cooling sources. The research shows that utilizing natural cooling can significantly reduce energy consumption and improve mileage.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Jeonghoon Lee, Laurent Zimmer, Takeshi Saito, Shinji Nakaya, Mitsuhiro Tsue
Summary: This study investigates the effects of spatial resolution on DMD amplitudes and spatial mode strengths, and proposes scaling factors to correct for the resolution differences. The results show that the proposed scaling factors successfully normalize the amplitudes and spatial modes, allowing for quantitative comparison of data obtained with different spatial resolutions. This study is significant for analyzing spatiotemporal data in various fields.
EXPERIMENTAL THERMAL AND FLUID SCIENCE
(2024)
Article
Thermodynamics
Bruno A. Storti, Vincent Sobotka
Summary: The rapid development of additive manufacturing technology in the past few decades has opened up new possibilities for the injection molding industry. This study focuses on the numerical study and enhancement of heat transfer in thermoplastic 3D printed mold inserts, as well as the comparison of their thermal performance with steel molds.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Yanli Zhao, Shibing Kuang, Xiaoliang Zhang, Mingjun Xu
Summary: This study experimentally investigates the dynamic process of water droplet impacting different wood surfaces and analyzes and discusses the impacting phenomena, phenomena distribution, droplet spreading dynamics, and maximum spread factor. The results show that the impacting process can be distinguished by Weber numbers and Reynolds numbers, and can be predicted by mathematical expressions.
EXPERIMENTAL THERMAL AND FLUID SCIENCE
(2024)
Review
Thermodynamics
Angelo Maiorino, Claudio Cilenti, Fabio Petruzziello, Ciro Aprea
Summary: This article discusses the importance of thermal management in electric vehicle Li-ion batteries, and presents the latest developments in this field from both academic research and the automotive industry. Experimental and numerical studies are reported, and nine electric vehicle models are analyzed to understand the current trends in battery management. The article concludes with an overview of future perspectives in battery thermal management.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Giovani Dambros Telli, Sahin Gungor, Sylvie Lorente
Summary: This work investigates liquid cooling solutions for Li-ion batteries in stationary Battery Energy Storage Systems. Different numerical cell models are developed and compared, and the impact of module-level cooling configurations on temperature distribution is evaluated. The results show that counterflow canopy-to-canopy cooling provides better control of temperature distribution throughout the module.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Guofu Sun, Yi Zhan, Tomio Okawa, Mitsuhiro Aoyagi, Akihiro Uchibori, Yasushi Okano
Summary: Experiments were conducted on liquid jets ejected from oval nozzles to investigate the effects of nozzle orifice shape on jet behavior. The study found that the liquid jet exhibited different characteristics at different liquid flow rates. Correlations were established to predict the liquid jet state and characteristics of the secondary droplets produced during jet impact onto a solid surface. This research extended the available knowledge on liquid jet behavior.
EXPERIMENTAL THERMAL AND FLUID SCIENCE
(2024)
Article
Thermodynamics
Yajun Xie, Li Li, Qiang Xu, Xinyu Li, Haocheng Huang, Yugang Huang, Shaoyi Bei, Lanchun Zhang, Keqing Zheng
Summary: In this study, the thermal performances of liquid-cooling BTMS with different module sizes are systematically investigated. The results show that increasing the module size has a negative impact on the heat dissipation performance of BTMS, especially in terms of temperature uniformity. Further analysis of the thermal behaviors under various coolant velocities and flow direction arrangements reveals that ultra-low velocity operation can be a promising method to alleviate the contradiction between cooling performance and increased energy consumption.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Fengtao Zhang, Jianyuan Zhang, Jinggang You, Liyong Yang, Wei Wang, Qing Luo, Ligang Jiao, Zhengang Liu, Quan Jin, Hao Wang
Summary: Developing renewable energy and improving energy system efficiency are effective measures for reducing CO2 emissions. As the energy utilization scenario becomes more complex, the construction of multi-loop thermodynamic cycles becomes necessary. Existing studies lack a systematic construction method, therefore this study proposes a novel method based on the mapping from closed curves to thermodynamic cycles, demonstrating its effectiveness through test cases and existing cycle summaries.
Article
Thermodynamics
Sreeram Barathula, S. K. Chaitanya, Jaswanth K. K. Alapati, K. Srinivasan
Summary: This study investigates the complex relationship between domain discretization and transceiver allocation in improving the accuracy of acoustic pyrometry. The results highlight the significant role of the bias factor in influencing the accuracy of reconstructed temperature profiles and the impact of discretization error. Under different noise conditions, matching the number of transceivers with the number of domain cells shows exceptional performance when using the pseudo-inverse method, while the strategic application of Tikhonov regularization significantly reduces reconstruction errors.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Mingxiang Lu, Le Han, Jianhong Zhou, Qi Zhao, Qiang Li, Xuemei Chen
Summary: This study analyzed the thermohydraulic and thermal fatigue characteristics of a W/Cu flat-type microchannel cooling structure. The numerical results showed good temperature uniformity and heat transfer performance, while the experimental results demonstrated its ability to withstand 1000 cycles of thermal fatigue under a steady-state heat load of 20 MW/m(2).
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Haojie Sun, Guoyao Yu, Dan Zhao, Wei Dai, Ercang Luo
Summary: By introducing a coiled resonance tube, the footprint of a duplex Stirling cryocooler is reduced and power density is increased. The experiments showed a high acoustic power transfer efficiency on the coiled resonance tube. Computational fluid dynamics analysis revealed the loss mechanism in the coiled resonance tube.
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
Justas Sereika, Paulius Vilkinis, Gediminas Skarbalius, Algis Dziugys, Nerijus Pedisius
Summary: This study experimentally investigated the pulsatile flow structure based on a transitional-type cavity. It was found that the pulsation amplitude has a more significant effect on the dynamics of recirculation zone than the pulsation frequency. Pulsatile flow can reduce the size of the recirculation zone.
EXPERIMENTAL THERMAL AND FLUID SCIENCE
(2024)
Article
Thermodynamics
Harish K. Patel, Sukhjeet Arora, Rutuja Chavan, Bimlesh Kumar
Summary: This study experimentally analyzed the multiscale statistical assessment of scour depth surrounding spur dikes with downward seepage. The research found that seepage affects the morphological behavior and hydrodynamic characteristics of the channel bed, leading to changes in scour formation. The rate of scour depth changes initially increases with higher seepage velocity but eventually becomes constant over time.
EXPERIMENTAL THERMAL AND FLUID SCIENCE
(2024)
Article
Thermodynamics
Yuhang Zuo, Hao Zhou
Summary: This study investigates the safety issues and thermal performance of evacuated molten salt tower receivers during preheating. Experimental and numerical modeling methods were used to analyze the influence of operating and environmental factors on the thermal stress and performance of the receiver. The results show that the thermal stress is determined by the circumferential temperature gradient and is significantly reduced under strong wind conditions.
APPLIED THERMAL ENGINEERING
(2024)
