International Communications in Heat and Mass Transfer最新文献

{"title":"Vortex-driven heat transfer enhancement in supercritical CO2: Structural optimization with claw-shaped lattice design for enhanced thermal performance","authors":"Jiawei Wang ,&nbsp;Pincheng Xiang ,&nbsp;Bo Xu ,&nbsp;Yanan Zhang ,&nbsp;Zhenqian Chen ,&nbsp;Jinliang Xu ,&nbsp;Yuchuan Lei","doi":"10.1016/j.icheatmasstransfer.2025.109275","DOIUrl":"10.1016/j.icheatmasstransfer.2025.109275","url":null,"abstract":"<div><div>This study conducted computational simulations to comparatively investigate the effects of various typical claw-shaped lattice structure arrays (LSAs) on the flow and heat transfer performance of supercritical CO₂ in a vertically upward heated tube. The results indicate that the LSAs could effectively mitigate heat transfer deterioration (HTD) of supercritical CO₂, by regulating the coupling mechanism between buoyancy and flow acceleration effects, reducing wall temperature, and enhancing heat transfer coefficient. Furthermore, the influence of buoyancy and flow acceleration on heat transfer characteristics are systematically analyzed, revealing the advantages of claw-shaped lattice structures in suppressing HTD. The findings demonstrate that the four-claw LSA exhibits the most significant heat transfer enhancement, as its complex lattice geometry could induce stronger and more intricate vortex system, thereby facilitating momentum exchange and energy transport between the near-wall and core flow regions. Additionally, the four-claw LSA exhibits excellent robustness in heat transfer performance across varying structural parameters. Moreover, a generalized heat transfer prediction model applicable to both claw-shaped LSA tubes and smooth tubes is established. The proposed model accurately captures over 99 % of the simulation data, with a prediction error within ±5 %, aiming at providing crucial theoretical support and engineering guidance for optimizing supercritical CO₂ heating systems.</div></div>","PeriodicalId":332,"journal":{"name":"International Communications in Heat and Mass Transfer","volume":"167 ","pages":"Article 109275"},"PeriodicalIF":6.4,"publicationDate":"2025-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144500926","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Working fluid selecting of the enhanced DPORC system with double-layer multi-objective optimization based on the improved WRSR method considering three pinch point temperature differences ratios","authors":"Weikang Li ,&nbsp;Shujuan Bu ,&nbsp;Xinle Yang ,&nbsp;Zhenchao Yan ,&nbsp;Ning Yu ,&nbsp;Shengdong Lu ,&nbsp;Wenzhi Dai ,&nbsp;Yan Lv","doi":"10.1016/j.icheatmasstransfer.2025.109266","DOIUrl":"10.1016/j.icheatmasstransfer.2025.109266","url":null,"abstract":"<div><div>This paper centered on the dual-pressure ORC (DPORC) and its derived enhanced DPORC (SRPH-DPORC, DRP-DPORC) to surmount the constraints of pinch-point temperature difference analysis, fixed-weight optimization, and the fuzzy quantization classification of the working fluid. Thermodynamic, economic, environmental, and sustainable performance in the system was explored from the perspective of three pinch-point temperature difference ratios. The enhanced weighted rank-sum ratio (WRSR) was employed for two-layer multi-objective optimization to acquire the optimal system performance of diverse working fluids under the optimal three pinch-point temperature difference ratio and to quantitatively categorize the working fluids. The results indicate that the comprehensive performance of the SRPH-DPORC system is superior. The optimal performance corresponds to a temperature difference ratio of 1:4:15. The performance of the working fluid R365mfc is more favorable, and the economic performance of the zeotropic mixtures containing R365mfc and R601a is better. The working fluid R365mfc or the zeotropic mixture containing R365mfc is preferable under the weighting factor scheme emphasizing thermal performance and economic performance. Under the weighted factor scheme that emphasizes environmental performance and sustainable development performance, the working fluids R601a and R1233zd are more suitable. The working fluid c2butene is not appropriate for operation in the SRPH-DPORC systems.</div></div>","PeriodicalId":332,"journal":{"name":"International Communications in Heat and Mass Transfer","volume":"167 ","pages":"Article 109266"},"PeriodicalIF":6.4,"publicationDate":"2025-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144511040","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Investigation and optimization of Shell-and-tube thermal energy storage unit with biomimetic leaf-vein fins and carbon nanotubes for superior PCM efficiency","authors":"Shan Ali Khan ,&nbsp;Houssam Eddine Abdellatif ,&nbsp;Zhiheng Wang ,&nbsp;Haihu Liu ,&nbsp;Ahmed Belaadi ,&nbsp;Abdullah Alhushaybari","doi":"10.1016/j.icheatmasstransfer.2025.109250","DOIUrl":"10.1016/j.icheatmasstransfer.2025.109250","url":null,"abstract":"<div><div>This study investigates the performance of a PCM (Phase Change Material) shell-and-tube heat exchanger enhanced with leaf vein-inspired fins and multi-walled carbon nanotubes (MWCNTs). Given the increasing demand for efficient thermal energy storage (TES) systems, which are often limited by slow thermal response and low thermal conductivity, we explore the integration of these design innovations to enhance heat transfer rates. The analysis compares four configurations without MWCNTs and four with MWCNTs, varying in fin thickness and angles. Key performance metrics, including temperature distribution, liquid fraction, and natural convection phenomena, velocity contours, sensible and total heat storage, and mean heat storage rates, were evaluated. The geometrical parameters (Length, width and Angle) of the storage unit are optimized utilizing the Box-Behnken designs (BBD) with response surface method (RSM). The significance of geometric parameters namely fins length, fin width and fin angle on the heat release time of Latent Heat Thermal Energy Storage (LHTES) are scrutinized, and corresponding quadratic equation is fitted. The function of the optimized target variable melting time on each factor is fitted and it is noted that with increasing the fins length and width of angle has a significant impact on the optimized target (melting time). Findings reveal that Case 03 with MWCNTs, featuring the thickest fins, achieves the shortest melting time of 1040 s, reflecting a time-saving of 58.06 %. This case also exhibits the highest mean heat storage rate of 437.903 W, representing a 123 % increase compared to the base case without fins or MWCNTs. Additionally, Case 01 with MWCNTs shows the highest sensible heat storage of 61.46 KJ and total heat storage of 490.9 KJ, whereas Case 01 without MWCNTs has total heat storage of 490.11 KJ. The inclusion of MWCNTs consistently enhances heat storage rates across all configurations, demonstrating the potential of optimized fin design and MWCNT integration to improve the thermal performance of PCM-based heat exchangers.</div></div>","PeriodicalId":332,"journal":{"name":"International Communications in Heat and Mass Transfer","volume":"167 ","pages":"Article 109250"},"PeriodicalIF":6.4,"publicationDate":"2025-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144511053","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Study on the heat and mass transfer mechanisms of coal under sub-/supercritical water environment with co-injected oxygen","authors":"Yuxing Zhang,&nbsp;Zhiqin Kang,&nbsp;Dong Yang,&nbsp;Yang Lu","doi":"10.1016/j.icheatmasstransfer.2025.109268","DOIUrl":"10.1016/j.icheatmasstransfer.2025.109268","url":null,"abstract":"<div><div>By utilizing a sub-/supercritical water-assisted oxygen injection experimental system, real-time temperature monitoring at different measurement points within the coal body is performed during the sub-/supercritical water environment with co-injected oxygen. Combined with theoretical analysis and numerical simulation, this study investigates the heat and mass transfer mechanisms of coal under sub-/supercritical water environment with co-injected oxygen. The main research findings are as follows: Firstly, the critical temperature point for rapid oxidation of coal with oxygen in a sub-/supercritical water environment is 350 °C. Secondly, reaction heat at different locations shows no variation below 350 °C, diverges sharply at the critical point, and remains significantly different above it with little sensitivity to initial oxygen injection temperature. Thirdly, among positions equidistant from the injection well, those along the injection-to-production well direction exhibit significantly higher reaction heat during oxygen injection. Furthermore, below 350 °C, extensive incomplete oxidation occurs between coal and oxygen in the subcritical water environment, with significant residual oxygen present. Above 350 °C, oxidation becomes more complete in the supercritical water environment, with little to no residual oxygen remaining. Finally, when the temperature of the coal in the sub-/supercritical water environment exceeds the critical temperature of 350 °C before oxygen injection, oxygen concentrations vary significantly with distance from the injection point. Due to the combined effects of oxygen transport and oxidation reactions, three sequential zones are formed: a fully oxidized exothermic zone, an incompletely oxidized exothermic zone, and a pyrolysis zone under low oxygen concentration.</div></div>","PeriodicalId":332,"journal":{"name":"International Communications in Heat and Mass Transfer","volume":"167 ","pages":"Article 109268"},"PeriodicalIF":6.4,"publicationDate":"2025-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144511054","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Passive thermal management of PV solar panels using carbon fiber-enhanced phase change materials: A numerical and optimization study","authors":"Ali Al-Masri ,&nbsp;Khalil Khanafer ,&nbsp;Ahmad Sedaghat","doi":"10.1016/j.icheatmasstransfer.2025.109278","DOIUrl":"10.1016/j.icheatmasstransfer.2025.109278","url":null,"abstract":"<div><div>The efficiency of photovoltaic (PV) solar panels decreases with increasing operating temperature, necessitating effective thermal management solutions. Phase change materials (PCM's) have shown promise in passively regulating temperature through their high latent heat capacity. However, the inherently low thermal conductivity of PCM, as highlighted in our previous work, limits its effectiveness and may lead to increased solar cell temperatures compared to systems without PCM. This study addresses this challenge by enhancing PCM thermal conductivity through the incorporation of randomly oriented short carbon fibers. To model the thermal behavior of the composite PCM‑carbon fiber medium, a homogenization technique is employed, reducing computational effort while maintaining accuracy. A three-dimensional transient thermal finite element (FE) model has been developed to examine the spatial thermal behavior of the PV panel, addressing the limitations of earlier one-dimensional models. The numerical homogenization model is coupled with the FE model to perform optimization analysis, identifying the ideal carbon fiber volume fraction that enhances thermal conductivity while preserving the PCM's latent heat storage capacity. The optimized PCM‑carbon fiber system offers a scalable solution for passive thermal management in PV panels, with increased thermal conductivity of the composite medium between 47 % in the solid and 75 % in the liquid state. By reducing peak temperatures, the system enhances energy conversion efficiency and prolongs the operational lifespan of PV cells. The results demonstrate that the passively cooled system reduces the panel's maximum temperature from around 72.5 °C to approximately 57 °C, leading to a daily efficiency improvement of approximately 0.61 % and an enhancement of 4.6 W in daily electric power output. By significantly reducing peak temperatures and improving transient thermal response, the optimized design ensures efficient heat redistribution, addressing thermal hotspots and maintaining panel performance. This study underscores the potential of carbon fiber-enhanced PCM for advanced thermal management in PV applications, offering a computationally efficient and effective solution for energy-efficient solar panels.</div></div>","PeriodicalId":332,"journal":{"name":"International Communications in Heat and Mass Transfer","volume":"167 ","pages":"Article 109278"},"PeriodicalIF":6.4,"publicationDate":"2025-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144501392","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Tunable direction reverses of thermo-osmotic flow in a nanochannel by introducing surfactant","authors":"Kai Qi ,&nbsp;Zirui Li ,&nbsp;Haiyang Li ,&nbsp;Jun Wang ,&nbsp;Yongchang Chen ,&nbsp;Guodong Xia","doi":"10.1016/j.icheatmasstransfer.2025.109288","DOIUrl":"10.1016/j.icheatmasstransfer.2025.109288","url":null,"abstract":"<div><div>Thermo-osmosis is a fluid flow phenomenon in a nanochannel caused by thermal gradients. Generally, reversing the direction of thermo-osmosis requires structural modifications, which limit practical applications. This paper proposes a surfactant-based method to reverse the direction of thermo-osmosis without altering the nanochannel. Molecular dynamics simulations demonstrate that the direction and strength of thermo-osmotic flow in nanochannels can be tuned by varying the surfactant concentration. The introduction of surfactants into the fluid significantly alters the distribution of interfacial free energy. By calculating the potential of mean force, it is found that the addition of the surfactant can reverse the flow direction from positive (high-to-low temperature) to negative (low-to-high temperature), which is attributed to the sign change in the slope of the potential of mean force distribution along the flow direction. Numerical studies further quantify the influence of channel width, surfactant hydrophilicity, and system temperature on the critical reversal concentration. This work presents a tunable, structure-independent method for reversing the direction of thermo-osmosis, thereby advancing applications in adaptive nanofluidics and energy-efficient thermal management.</div></div>","PeriodicalId":332,"journal":{"name":"International Communications in Heat and Mass Transfer","volume":"167 ","pages":"Article 109288"},"PeriodicalIF":6.4,"publicationDate":"2025-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144501391","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhanced thermal efficiency in crossflow evaporative cooling systems: A comparative study of materials and flow patterns","authors":"Sabir Rasheed ,&nbsp;Muzaffar Ali ,&nbsp;Hassan Ali ,&nbsp;Nadeem Ahmed Sheikh ,&nbsp;Muhammad Imran ,&nbsp;Xiaoyun Xie ,&nbsp;Guiqiang Li","doi":"10.1016/j.icheatmasstransfer.2025.109252","DOIUrl":"10.1016/j.icheatmasstransfer.2025.109252","url":null,"abstract":"<div><div>The performance of crossflow evaporative cooling systems can be significantly influenced by a well-designed airflow and water distribution pattern, along with highly absorbent heat and mass exchange materials in the wet channels. This study presents a comprehensive numerical and experimental analysis of three different design variants of crossflow evaporative heat and mass exchangers: (i). DV1: Aluminum-cotton cloth channels with a zig-zag airflow pattern, (ii). DV2: Polypropylene-nonwoven fabric channels with a center-line airflow pattern, and (iii). DV3: Polypropylene-nonwoven fabric channels with an extreme-side airflow pattern. The aim is to examine the thermal and mass transfer properties of different geometric and operational configurations of HMX, especially those incorporating cost-effective and high-efficiency materials, and their effect on system performance. Initially, a detailed numerical analysis is performed to determine the heat and mass characteristics of the three design variants, evaluating the air temperature, relative humidity, and evaporation rates on a unit channel basis. Based on the numerical assessment, prototypes for each design are developed with unit channel (a dry sub-channel overlapped with two wet sub-channels) of size 8000 mm³ for detailed experimentation under a wide range of actual operating conditions. The results at the unit channel revealed that the overall performance of DV2 and DV3 is better compared to DV1, mainly due to the high wettability maintained by the non-woven fabric in the wet channels. Moreover, DV2 and DV3 achieved a maximum air temperature reduction of about 7 °C and 6.7 °C, respectively. The maximum cooling capacity and COP achieved 398.62 W and 4.2, respectively, whereas the wet-bulb and dew-point effectiveness varied from 0.11 to 0.3, and 0.08 to 0.23, respectively. Thus, it is apparent that appropriate material selection with high wettability and suitable air-water flow patterns can significantly enhance evaporative cooling to ensure efficient thermal comfort.</div></div>","PeriodicalId":332,"journal":{"name":"International Communications in Heat and Mass Transfer","volume":"167 ","pages":"Article 109252"},"PeriodicalIF":6.4,"publicationDate":"2025-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144490853","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Entropy optimized MHD peristaltic movement of Johnson Segalman liquid with homogeneous heterogeneous reaction","authors":"Shahid Farooq ,&nbsp;Sana Batool ,&nbsp;Maria Imtiaz ,&nbsp;Hamdy Khamees Thabet ,&nbsp;Fadhil Faez Sead","doi":"10.1016/j.icheatmasstransfer.2025.109234","DOIUrl":"10.1016/j.icheatmasstransfer.2025.109234","url":null,"abstract":"<div><div>This study examines a Johnson Segalman peristaltic movement over compliant curved channel walls that is electrically conductive and incompressible. Mass transfer analysis is carried out by the chemical reaction between two distinct species while taking homogeneous-heterogeneous phenomena into account. The flow modeling incorporates slip effects, heat generation/absorption, viscous dissipation, and Joule heating. The laws of conservation are used to model flows. By using lubrication theory assumptions and dimensionless variables, the mathematical equations of flow are made simpler. Here, the modeling equation for entropy generation is used to analyze irreversibility caused by heat, fluid flow, and Bejan number. The built-in ND Solve tool in Mathematica software is used to numerically manage the simplified system of equations. This command combines two numerical systems, RK-Fehlberg and shooting. The result and discussion section provides a full explanation of the physical behavior of flow quantities against the relevant parameters. It is observed that the Hartman number behaves in the opposite way on temperature and velocity profiles. Additionally, an enhancement in fluid concentration is noted for larger heterogeneous reaction parameter.</div></div>","PeriodicalId":332,"journal":{"name":"International Communications in Heat and Mass Transfer","volume":"167 ","pages":"Article 109234"},"PeriodicalIF":6.4,"publicationDate":"2025-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144491890","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Potential for performance improvement of the automobile thermoelectric generator by regulating vehicle speeds","authors":"Ding Luo ,&nbsp;Ying Li ,&nbsp;Xuehui Wang ,&nbsp;Hao Chen","doi":"10.1016/j.icheatmasstransfer.2025.109282","DOIUrl":"10.1016/j.icheatmasstransfer.2025.109282","url":null,"abstract":"<div><div>The driving conditions of internal combustion engine vehicles significantly impact the mass flow rate and temperature of the exhaust gas, which leads non-negligible influence on the performance of the automobile thermoelectric generator (ATEG). In this work, a transient fluid-thermal-electric multiphysics model is proposed to investigate the potential for performance improvement of the ATEG by regulating vehicle speeds under acceleration, deceleration, and reciprocation conditions. The results indicate that the ATEG output power can be improved under acceleration conditions and a larger acceleration rate contributed more significant enhancement, while its conversion efficiency under the same condition is decreased. In contrast, the conversion efficiency of the ATEG under the deceleration conditions is larger than that under acceleration conditions and the deceleration rate seemed to have limited impacts on the enhancement of conversion efficiency. Also, comparisons between different reciprocation conditions and the constant speed condition exhibit a maximum improvement of 249.36 % and 134.15 % in the average ATEG output power and conversion efficiency, respectively, in ATEG under the reciprocation condition with a speed range of 20–100 km/h. This work reveals the impact of different driving conditions on the ATEG performance and provides a promising practical way of improving the ATEG performance by regulating the vehicle speed.</div></div>","PeriodicalId":332,"journal":{"name":"International Communications in Heat and Mass Transfer","volume":"167 ","pages":"Article 109282"},"PeriodicalIF":6.4,"publicationDate":"2025-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144490846","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Structural optimization design of dimple plate heat exchanger based on machine learning","authors":"Yicong Li ,&nbsp;Kim Tiow Ooi ,&nbsp;Lin He ,&nbsp;Shunan Zhao ,&nbsp;Qing Luo ,&nbsp;Wei Liu ,&nbsp;Zhichun Liu","doi":"10.1016/j.icheatmasstransfer.2025.109271","DOIUrl":"10.1016/j.icheatmasstransfer.2025.109271","url":null,"abstract":"<div><div>This study employs computational fluid dynamics (CFD) to investigate the thermal-hydraulic performance within the channels of dimple plate heat exchangers (DPHE). A parametric simulation approach is utilized to evaluate the effects of dimple height (<em>H</em> = 4 mm, 6 mm, 8 mm, 10 mm and 12 mm), dimple pitch (<em>P</em> = 10 mm, 15 mm, 20 mm and 30 mm), and channel width (<em>W</em> = 8 mm, 10 mm and 12 mm) on the overall performance of the DPHE. To decouple the interactions among these structural parameters, an artificial neural network (ANN) combined with an optimization algorithm is employed for multi-objective optimization based on the results of parametric simulation. The complex channel geometry and the presence of welded points significantly alter the flow path and fluid dynamics within the exchanger. The findings indicate that the Nusselt number (<em>Nu</em>) reaches a maximum value of 67.67 at a flow velocity of 0.3 m/s when <em>H</em> = 12 mm, while variations in <em>P</em> exhibit the most substantial influence on the overall performance of the DPHE. The optimal structural parameters determined through optimization are <em>H</em> = 4.0031 mm, <em>P</em> = 25.716 mm, and <em>W</em> = 8.001 mm. Under these conditions, the j-factor (<em>JF</em>) of the DPHE attains a maximum value of 0.125.</div></div>","PeriodicalId":332,"journal":{"name":"International Communications in Heat and Mass Transfer","volume":"167 ","pages":"Article 109271"},"PeriodicalIF":6.4,"publicationDate":"2025-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144500923","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}