International Journal of Heat and Fluid Flow最新文献

Experimental and numerical investigation of fast control surface deflections 快速控制曲面挠度的实验与数值研究

IF 2.6 3区工程技术 Q2 ENGINEERING, MECHANICAL

International Journal of Heat and Fluid Flow

Pub Date : 2025-12-05 DOI: 10.1016/j.ijheatfluidflow.2025.110177

Ruben B. Seidler , Reinhard Geisler , Andreas Schröder , Jochen Wild

The development of load alleviation for an aircraft requires an accurate and efficient prediction of gust and maneuver loads. In the design of an aircraft the prediction of these unsteady loads has become crucial for the ideal alleviation of gust loads. A database for unsteady aerodynamic responses is however very cost expensive and time consuming to generate, in an experiment and with numerical simulations. An efficient tool for the computation of aerodynamic responses is the linear frequency domain solver, which allows the prediction of amplitude and phase shift of any periodic oscillation of body or flow in the frequency domain. The unsteady response allows a fast and efficient prediction for any arbitrary unsteady change of in example a control surface deflection or a gust speed. The validation of the linear frequency domain solver for unsteady aerodynamics is crucial, so that its prediction quality is ensured. A wind tunnel experiment was set up, which focused on fast control surface deflections and analyzed the capabilities and accuracy of the method. The experiment was accompanied by two- and three-dimensional URANS simulations, which allow a more detailed comparison and help to increase the understanding of the flow physics. For higher frequencies of the control surface oscillation, the adjusting position of the stagnation point on the leading edge lags behind the actual control surface position as if it were in a quasi-steady state. This leads to a phase lag between motion and resulting force and a lower lift response amplitude.

飞机减载的发展需要对阵风和机动载荷进行准确有效的预测。在飞机设计中，对这些非定常载荷的预测对于理想地减轻阵风载荷至关重要。然而，在实验和数值模拟中，非定常气动响应数据库的生成是非常昂贵和耗时的。线性频域求解器是计算气动响应的有效工具，它可以在频域内预测物体或流动的任何周期振荡的幅值和相移。非定常响应允许对任意非定常变化进行快速有效的预测，例如控制面偏转或阵风速度。非定常空气动力学线性频域解算器的验证是保证其预测质量的关键。以快速控制曲面偏转为研究对象，建立了风洞实验，分析了该方法的性能和精度。该实验同时进行了二维和三维URANS模拟，可以进行更详细的比较，并有助于增加对流动物理的理解。当控制面振荡频率较高时，前缘驻点的调节位置滞后于实际控制面位置，仿佛处于准稳态。这导致运动和产生的力之间的相位滞后和较低的升力响应幅度。

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引用次数: 0

Flow regime identification in a dual impeller gas-liquid stirred tank reactor using time-series analysis of radioactive particle tracking data 利用放射性粒子跟踪数据的时间序列分析识别双叶轮气液搅拌槽式反应器的流态

IF 2.6 3区工程技术 Q2 ENGINEERING, MECHANICAL

International Journal of Heat and Fluid Flow

Pub Date : 2025-12-05 DOI: 10.1016/j.ijheatfluidflow.2025.110167

Roushni Kumari , Raghvendra Gupta , Jayashree Biswal , Miryan C. Cassanello , Rajesh Kumar Upadhyay

Accurate characterization of flow regimes in gas–liquid stirred tank reactors (STRs) is critical for the design, scale-up, and optimization of multiphase mixing systems. This study investigates three-dimensional liquid flow fields in a lab-scale dual impeller gas–liquid STR (T = 0.19 m), equipped with radial and mixed flow impellers. A non-invasive Radioactive Particle Tracking (RPT) technique was used to capture detailed flow behavior under varying operating conditions. Velocity vector plots, mean liquid velocity, and turbulent kinetic energy (TKE) profiles were analyzed to evaluate the hydrodynamic influence of impeller configuration and impeller spacing. To further understand the chaotic nature of the flow, time-series data from the tracked particle were processed, using Kolmogorov entropy, following the approach of Nedeltchev et al. (2003) for bubble columns. This entropy-based method enabled identification of flow regimes across different impeller speeds and superficial gas velocities, and impeller-to-impeller spacing to impeller diameter ratio (S/D). Additionally, the individual contributions of the lower and upper impellers to local Kolmogorov entropy were assessed, revealing their distinct roles in flow and bubble dispersion. The integration of RPT measurements with Kolmogorov entropy analysis provides a robust framework for understanding complex flow patterns and enhancing hydrodynamic design in dual impeller STRs.

准确表征气液搅拌槽式反应器（STRs）的流动状态对于多相混合系统的设计、放大和优化至关重要。本文研究了一个实验室规模的双叶轮气液STR （T = 0.19 m）的三维液体流场，该STR配备径向和混合流叶轮。一种非侵入性放射性粒子跟踪（RPT）技术用于捕获不同操作条件下的详细流动行为。通过对速度矢量图、平均液体速度和湍流动能（TKE）分布曲线的分析，评估了叶轮构型和叶轮间距对流体动力的影响。为了进一步了解流动的混沌性质，利用Kolmogorov熵，按照Nedeltchev等人（2003）对气泡柱的方法，对来自跟踪粒子的时间序列数据进行处理。这种基于熵的方法可以识别不同叶轮转速和表面气体速度下的流动状态，以及叶轮与叶轮之间的间距与叶轮直径比（S/D）。此外，还评估了上下叶轮对局部Kolmogorov熵的贡献，揭示了它们在流动和气泡分散中的不同作用。RPT测量与Kolmogorov熵分析的集成为理解复杂的流动模式和加强双叶轮str的流体动力设计提供了一个强大的框架。

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引用次数: 0

Analyzing the impact of various heating element cross-sections on the melting progression of phase change material 分析了不同加热元件截面对相变材料熔化过程的影响

IF 2.6 3区工程技术 Q2 ENGINEERING, MECHANICAL

International Journal of Heat and Fluid Flow

Pub Date : 2025-12-05 DOI: 10.1016/j.ijheatfluidflow.2025.110163

Ali Radwan , Essam M. Abo-Zahhad , Ahmed Saad Soliman

Storing thermal energy in horizontally aligned cavities often suffers from limited energy storage capacity for a given thermal charging period. To address this limitation, this study aims to computationally investigate the impact of the shape and position of the heating element on the melting progression of phase change material (PCM) contained in a cylindrical cavity. The analyzed cases include concentric triangular, shifted triangular, concentric square, shifted square, concentric elliptical, and shifted elliptical cross-sections, and these are evaluated against a baseline case employing a conventional circular heating element. The results demonstrate that a shifted elliptical cross-section significantly enhances PCM melting in horizontally aligned thermal storage units. The melting time is reduced by approximately 52.8% when the standard circular heating element is replaced with a shifted elliptical heating element of equal cross-sectional area. To further investigate this improvement, the simulations are performed for various aspect ratios and shift ratios of the elliptical heating element. The findings show that a prolate elliptical shape shifted toward the bottom of the cylinder provides the best performance. The optimized elliptical heating element reduces the complete melting time by 76.9 % compared to the conventional circular concentric heating element.

在给定的热充电周期内，在水平排列的空腔中储存热能往往受到能量储存能力的限制。为了解决这一限制，本研究旨在通过计算研究加热元件的形状和位置对圆柱形腔中相变材料（PCM）熔化过程的影响。分析的情况包括同心三角形、移位三角形、同心正方形、移位正方形、同心椭圆和移位椭圆截面，并对采用传统圆形加热元件的基线情况进行评估。结果表明，在水平排列的储热单元中，椭圆截面的移位显著提高了PCM的熔化速度。将标准的圆形加热元件替换为等截面积的移位椭圆形加热元件后，熔化时间缩短约52.8%。为了进一步研究这种改进，对椭圆加热元件的不同宽高比和移位比进行了模拟。研究结果表明，向圆柱体底部移动的长椭圆形状提供了最佳性能。优化后的椭圆加热元件与传统的圆形同心加热元件相比，完全熔化时间缩短了76.9%。

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引用次数: 0

Inviscid characteristics of a conical shock wave from a finite cone impinging on a flat plate in a Mach 2 flow 2马赫流动中有限锥撞击平板产生的锥形激波的无粘特性

IF 2.6 3区工程技术 Q2 ENGINEERING, MECHANICAL

International Journal of Heat and Fluid Flow

Pub Date : 2025-12-04 DOI: 10.1016/j.ijheatfluidflow.2025.110158

Bikalpa Bomjan Gurung, Sudhir L. Gai, Amna Khraibut, Krishna M. Talluru

Comparison of the inviscid simulation and experiment data (Gai & Teh, 2000) showed the strong viscous effect of the boundary layer on the plate with separation of the boundary layer. There was a linear relationship between the inviscid and experimental data of wall pressures (

P_{3, m a x} / P_{1}

) measured on the symmetry plane. The effect of the interaction between the impinging shock and the trailing edge expansion fan originating from the base of the cone was to reduce the conical shock angle beginning at the expansion head. The expansion fan interaction showed strong dependency on the cone height from the plane. Separation length obtained from the experiment showed a power law dependency on

P_{3, m a x} / P_{1}

for all cone angles and cone heights from the surface when normalised by the boundary layer plate thickness at the impingement location.

无粘模拟与实验数据的对比（Gai & Teh, 2000）表明，边界层在分离的情况下对板产生了很强的粘滞效应。在对称面上测得的壁面压力（P3,max/P1）的无粘值与实验值呈线性关系。冲击激波与尾缘膨胀风扇的相互作用减小了从膨胀头开始的锥形激波角。膨胀风扇的相互作用与锥距平面高度密切相关。实验得到的分离长度与P3、max/P1呈幂律关系，所有锥角和锥距表面的高度均由撞击位置的附面层板厚度归一化。

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引用次数: 0

Hydrodynamic and heat transfer analysis of cylinder with different groove surfaces in laminar flow 层流中不同槽面圆柱体的流体力学与传热分析

IF 2.6 3区工程技术 Q2 ENGINEERING, MECHANICAL

International Journal of Heat and Fluid Flow

Pub Date : 2025-12-03 DOI: 10.1016/j.ijheatfluidflow.2025.110169

Yizhu Zhao , Haihua Deng , Haibao Hu , Hanbing Ke , Jun Wen , Luo Xie

To mitigate the flow-induced stress on pipe fittings that causes fatigue failure in convective heat exchangers, grooves structure are often incorporated into the surface geometry to reduce hydrodynamic forces and extend service life. To further investigate the effects of various groove structures on the hydrodynamic and heat transfer of pipe fittings, this study employs numerical simulations on fixed cylinders with different groove shapes and groove cover angles at Reynolds number of 100. The research mainly focuses on the flow and heat transfer characteristics around the cylinder. Hydrodynamic coefficients, pressure coefficients, Nusselt numbers, and flow field characteristics of the smooth cylinder and cylinders with different grooved surfaces are comparatively analyzed in this study. The results show that both different groove shapes and groove coverage rates have a significant impact on the hydrodynamic coefficients of the cylinder. Root-mean-square lift coefficient and drag coefficient of the cylinder with triangle grooves are the smallest when the cover angle is 50°, which are approximately 13% and 3.6% lower than those of the smooth cylinder, respectively. Meanwhile, its average Nusselt number is 12.14, which is only about 2.3% lower than that of the smooth cylinder.Overall, this structure offers the most outstanding performance.

为了减轻对流热交换器管件上的流动应力导致的疲劳失效，沟槽结构通常被纳入到表面几何结构中，以减少水动力并延长使用寿命。为了进一步研究不同沟槽结构对管件流体动力和传热的影响，本文在雷诺数为100的条件下，对不同沟槽形状和沟槽盖角的固定圆柱体进行了数值模拟。研究主要集中在圆柱周围的流动和传热特性。对比分析了光滑圆柱体和不同槽面圆柱体的水动力系数、压力系数、努塞尔数以及流场特性。结果表明，不同槽型和槽型覆盖率对筒体的水动力系数均有显著影响。当盖角为50°时，带三角形沟槽气缸的升力系数和阻力系数最小，分别比光滑气缸低约13%和3.6%。同时，其平均努塞尔数为12.14，仅比光滑圆柱低2.3%左右。总的来说，这种结构提供了最出色的性能。

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引用次数: 0

Enhancing heat transfer efficiency in sphero-cylinder particle systems: A numerical study 提高球柱颗粒系统的传热效率：数值研究

IF 2.6 3区工程技术 Q2 ENGINEERING, MECHANICAL

International Journal of Heat and Fluid Flow

Pub Date : 2025-12-03 DOI: 10.1016/j.ijheatfluidflow.2025.110164

Zhimin Yao , Xiang Na , Huan Zhao , Hayder I. Mohammed , Sheng Chen

The Nusselt number, a key indicator of heat transfer around sphero-cylindrical particles in uniform flow, depends primarily on three dimensionless parameters: the aspect ratio (β), incidence angle (θ), and Reynolds number (Re). This study systematically examines the convective heat transfer of sphero-cylindrical particles using a three-dimensional Lattice Boltzmann framework. The novelty of this work lies in deriving comprehensive correlations for the Nusselt number across a wide parameter range (Re = 10–100, β = 2–8, θ = 0–90°), quantifying the dependence of the sinusoidal exponent m on Re and β—an aspect rarely addressed in previous studies—and ensuring that the proposed correlations maintain deviations below 10 %. The results show that the average Nusselt number increases monotonically with Re, reaching up to 2.5 times its value at Re = 10 when Re = 100. At Re = 30, increasing β from 2 to 8 enhances Nu by 25.3 %, while the effect levels off for β > 6. When θ increases from 0° to 60°, Nu rises by about 7.5 %, but further increases yield diminishing benefits. The derived correlations for both Nu and m achieve maximum deviations of 9.75 % and 4.3 %, respectively. By quantifying the relationships between key parameters and heat transfer characteristics, this work provides a foundation for improving the design and efficiency of systems involving sphero-cylinder particles. Ultimately, this research is essential for advancing the field of heat transfer and fluid dynamics, with potential implications for enhancing the performance and sustainability of industrial processes reliant on fluid-particle interactions.

Nusselt数是均匀流动中球柱状颗粒传热的关键指标，主要取决于三个无量纲参数：展弦比（β）、入射角（θ）和雷诺数（Re）。本研究使用三维晶格玻尔兹曼框架系统地研究了球-圆柱粒子的对流换热。这项工作的新颖之处在于推导出努塞尔数在宽参数范围内的综合相关性（Re = 10 - 100, β = 2-8, θ = 0-90°），量化正弦指数m对Re和β的依赖-这在以前的研究中很少涉及-并确保所提出的相关性保持在10%以下的偏差。结果表明，平均努塞尔数随着Re的增加而单调增加，当Re = 100时，平均努塞尔数达到其在Re = 10时的2.5倍。在Re = 30时，β从2增加到8，Nu增加25.3%，而β [gt； 6]的效应趋于稳定。当θ从0°增加到60°时，Nu增加约7.5%，但再增加则收益递减。Nu和m的推导相关性分别达到9.75%和4.3%的最大偏差。通过量化关键参数与传热特性之间的关系，本工作为改进球柱颗粒系统的设计和效率提供了基础。最终，这项研究对于推进传热和流体动力学领域至关重要，对于提高依赖于流体-颗粒相互作用的工业过程的性能和可持续性具有潜在的意义。

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引用次数: 0

The effect of particle curvature in the turbulent flow through a porous medium composed of staggered cylinders 颗粒曲率对交错柱状多孔介质紊流的影响

IF 2.6 3区工程技术 Q2 ENGINEERING, MECHANICAL

International Journal of Heat and Fluid Flow

Pub Date : 2025-12-02 DOI: 10.1016/j.ijheatfluidflow.2025.110156

J. Marroquín-Desentis , J.E. López-Escobar , S. Martínez-Delgadillo , J.A. Yañez-Varela , J.I. Hernández-Vega , A. Alonzo-García

The effect of particle curvature ratio (R*) in the turbulent flow in porous media composed of staggered cylinders was assessed. The porosity (ϕ) was varied from 0.4 to 0.8, and the R* from the square cross-section to the circular cross-section at a pore Reynolds number of Re_p = 10⁴. The Abe-Kondoh-Nagano (AKN) and the wall-modeled large eddy simulation (WMLES) techniques were used to model the turbulence. Novel insights regarding particle aerodynamics and turbulence parameters, as well as static and dynamic pressure gradients, the evolution of shear layers, and main frequencies, are described. At the lowest ϕ = 0.4, the most aerodynamic curvature was observed at R* = 0.333, where decreases of more than 60 % were achieved for the drag coefficient, friction factor, dissipation rate, and fluctuating lift. As the porosity increased, the reductions are relaxed, but still present. It is discussed that the flat regions in the upper and lower cylinder faces at R* = 0.333 act as static pressure gradient separators, thereby avoiding the sudden shock at the pore throat that is present in the circular cylinder case. Considering the advancements in additive manufacturing, this information may serve as a basis for optimizing dedicated engineering porous media devices, such as metamaterials, chemical reactors, and static mixers, among others.

研究了颗粒曲率比（R*）对交错柱状多孔介质湍流的影响。孔隙率（φ）在0.4 ~ 0.8之间变化，孔隙雷诺数Rep = 104时，从方形截面到圆形截面的R*变化。采用Abe-Kondoh-Nagano （AKN）和壁面大涡模拟（WMLES）技术对湍流进行了模拟。描述了关于粒子空气动力学和湍流参数的新见解，以及静态和动态压力梯度，剪切层的演变和主要频率。在最低的φ = 0.4处，R* = 0.333处观察到最大的气动曲率，其中阻力系数，摩擦系数，耗散率和波动升力降低了60%以上。随着孔隙率的增加，这种还原是松弛的，但仍然存在。讨论了在R* = 0.333处，上下圆柱体表面的平面区域作为静压梯度分离器，从而避免了存在于圆柱壳体的孔喉处的突然冲击。考虑到增材制造的进步，这些信息可以作为优化专用工程多孔介质设备的基础，例如超材料、化学反应器和静态混合器等。

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引用次数: 0

New aspects in thermal systems at low ambient impact: Experimental study on interconnected natural circulation loops 低环境影响下热系统的新进展：相互连接的自然循环回路的实验研究

IF 2.6 3区工程技术 Q2 ENGINEERING, MECHANICAL

International Journal of Heat and Fluid Flow

Pub Date : 2025-12-02 DOI: 10.1016/j.ijheatfluidflow.2025.110159

Mario Misale, Annalisa Marchitto, Johan Augusto Bocanegra

Significant research efforts are being carried out in this century to reduce the environmental impact of energy production and transportation technologies. The greenhouse effect caused an increase in the average temperature, and one of the targets is to keep it below two degrees Celsius. An interesting technology for transferring thermal energy without active devices (such as a pump or blower) is natural circulation in loops. These thermal circuits find applications in various engineering fields, such as geothermal implants, the cooling of new-generation nuclear reactors, electronic components, and solar systems. This paper presents an experimental study of natural circulation in interconnected loops. In particular, thermo-hydraulic behavior is studied when different parameters, such as power transferred to the fluid and the inclination of the entire loop assembly (referred to as the gravitational field), change. The interaction between multi-connected loops was observed for the first time, showing a direct dependence on the inclination angle and the input power differences of the three circuits. The maximum temperature difference and interaction intensity were observed at the higher inclination angle of 60°.

本世纪正在进行重大的研究工作，以减少能源生产和运输技术对环境的影响。温室效应导致平均气温上升，目标之一是将其控制在2摄氏度以下。一种有趣的热能传递技术，无需主动装置（如泵或鼓风机），是循环中的自然循环。这些热电路应用于各种工程领域，如地热植入物、新一代核反应堆的冷却、电子元件和太阳能系统。本文提出了一种相互联系的环中自然循环的实验研究。特别地，研究了不同参数（如传递给流体的功率和整个回路组件的倾角（称为重力场））变化时的热液行为。首次观察到多回路之间的相互作用，表明三路的倾角和输入功率差直接依赖于多回路之间的相互作用。温度差异和相互作用强度在较大的倾角为60°时最大。

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引用次数: 0

Experimental investigation on heat sink distribution of regenerative cooling with supercritical n-decane catalytic steam reforming 超临界正癸烷催化蒸汽重整蓄热式冷却散热器分布的实验研究

IF 2.6 3区工程技术 Q2 ENGINEERING, MECHANICAL

International Journal of Heat and Fluid Flow

Pub Date : 2025-12-01 DOI: 10.1016/j.ijheatfluidflow.2025.110165

Yu Feng , Zhenhua Wang , Jiang Qin , Fuqiang Chen

Thermal cracking of hydrocarbon fuels serves as a thermal management method for hypersonic vehicles, yet it faces challenges of insufficient cooling capacity and pyrolytic coking at high Mach numbers (Ma > 7). The steam reforming of hydrocarbon fuels is effective in improving heat sink and inhibiting coke formation. This study experimentally explores the effects of water content, mass flow rate, and pressure on heat sink distribution in different temperatures, with gaseous yield analysis revealing the mechanistic effects of steam reforming reactions in heat sink enhancement. The results indicate that the initial temperature of steam reforming reaction (360 ℃) is considerably lower than the temperature for thermal cracking reaction (490 ℃), implying an earlier release of the chemical heat sink. The higher water-content exhibits higher total heat sink in the low-temperature stage. In the high-temperature stage, the reaction path and carbon molar yield are affected by the various water contents, and the high water-content promotes the steam reforming reaction and reduces the production of coking precursor olefins. The mass flow rate primarily affects carbon molar yield by modifying reaction duration, while exerting negligible influence on the reaction pathways. High-pressure conditions accelerate the frequency of intermolecular collisions thereby facilitating the release of chemical heat sinks. This study is expected to provide both experimental data and theoretical guidance for the application of steam reforming in cooling channels of scramjet.

烃类燃料热裂解作为高超声速飞行器的一种热管理方法，面临着冷却能力不足和高马赫数下热解结焦的挑战（Ma > 7）。烃类燃料的蒸汽重整在改善热沉和抑制结焦方面是有效的。实验研究了不同温度下水蒸气含量、质量流量和压力对热沉分布的影响，并通过气体产率分析揭示了蒸汽重整反应对热沉强化的机理。结果表明：蒸汽重整反应的起始温度（360℃）明显低于热裂解反应的起始温度（490℃），表明化学热沉释放较早；含水率越高，低温阶段总热沉越大。在高温阶段，不同的水含量影响反应路径和碳摩尔产率，高的水含量促进了蒸汽重整反应，降低了焦化前驱烯烃的产量。质量流量主要通过改变反应时间来影响碳摩尔产率，而对反应途径的影响可以忽略不计。高压条件加快了分子间碰撞的频率，从而促进了化学散热器的释放。本研究将为蒸汽重整在超燃冲压发动机冷却通道中的应用提供实验数据和理论指导。

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引用次数: 0

Design and thermal-humidity characteristics of a thermoelectric cooling unit 热电冷却装置的设计及热湿特性

IF 2.6 3区工程技术 Q2 ENGINEERING, MECHANICAL

International Journal of Heat and Fluid Flow

Pub Date : 2025-12-01 DOI: 10.1016/j.ijheatfluidflow.2025.110168

Ding Wang, Wenqian Zhang, Leyao Chu, Zun Liu, Limei Shen

In recent years, advancements in thermoelectric materials have substantially increased the application potential of thermoelectric cooling technology. As the primary energy conversion unit in thermoelectric cooling systems, the performance of the thermoelectric cooling unit (TECU) has a direct impact on system efficiency and reliability. However, current designs of TECU are limited owing to a lack of standardized procedures. Moreover, existing research has primarily focused on heat transfer processes, while the impact of condensation from humid air on the cold-side during practical operation remains largely unexplored. This study proposes a systematic design process based on rated cooling capacity and designs a TECU with a cooling capacity of 500 W. Subsequently, a coupled simulation model integrating “thermoelectric effects–heat transfer–heat-mass conversion” is developed to investigate the thermal and humidity characteristics of thermoelectric cooling performance. Simulation results show a linear relationship between temperature and cooling performance. A 2 ℃ increase in cold-side temperature increases cooling capacity by 32.3 W, while an equivalent increase in hot-side temperature reduces it by 26.2 W. By contrast, the effect of humidity is non-linear and complex. Humidity only affects the cooling performance once it reaches the condensation threshold. The condensation phenomenon improves heat transfer efficiency and increases cooling capacity by an average of 64.3 W. Under varying temperature and humidity working conditions, the TECU maintains a constant cooling capacity of 500 W by adjusting the TECU input current. Notably, the coefficient of performance improves by 61.0 % under high-humidity conditions, reaching 1.41. This study provides valuable theoretical insights for the design and application of TECU.

近年来，热电材料的进步大大增加了热电冷却技术的应用潜力。热电冷却机组作为热电冷却系统中的一次能量转换单元，其性能的优劣直接影响到系统的效率和可靠性。然而，由于缺乏标准化程序，目前的TECU设计受到限制。此外，现有的研究主要集中在传热过程上，而在实际运行过程中，潮湿空气的冷凝对冷侧的影响在很大程度上仍未被探索。本研究提出了一种基于额定制冷量的系统设计流程，并设计了一种制冷量为500w的TECU。随后，建立了“热电效应-传热-热质转换”耦合仿真模型，研究了热电制冷性能的热湿特性。仿真结果表明，温度与冷却性能之间存在线性关系。冷侧温度每增加2℃，制冷量增加32.3 W，热侧温度每增加2℃，制冷量减少26.2 W。相比之下，湿度的影响是非线性和复杂的。湿度只有在达到凝结阈值时才会影响制冷性能。冷凝现象提高了换热效率，平均增加了64.3 W的制冷量。在变温湿工况下，通过调节TECU输入电流，可保持500w的恒定制冷量。值得注意的是，在高湿条件下，性能系数提高了61.0%，达到1.41。本研究为TECU的设计和应用提供了有价值的理论见解。

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引用次数: 0