International Journal of Heat and Mass Transfer最新文献_第4页

Two-Phase flow study in the 3D fine-mesh flow field and gas diffusion layer of proton exchange membrane fuel cells

IF 5 2区工程技术

International Journal of Heat and Mass Transfer Pub Date : 2025-03-19 DOI: 10.1016/j.ijheatmasstransfer.2025.126987

Xuecheng Lv , Yang Li , Heng Huang , Zhifu Zhou , Wei-Tao Wu , Lei Wei , Jizu Lyu , Linsong Gao , Yubai Li , Yongchen Song

{"title":"Two-Phase flow study in the 3D fine-mesh flow field and gas diffusion layer of proton exchange membrane fuel cells","authors":"Xuecheng Lv , Yang Li , Heng Huang , Zhifu Zhou , Wei-Tao Wu , Lei Wei , Jizu Lyu , Linsong Gao , Yubai Li , Yongchen Song","doi":"10.1016/j.ijheatmasstransfer.2025.126987","DOIUrl":"10.1016/j.ijheatmasstransfer.2025.126987","url":null,"abstract":"<div><div>The two-phase flow transport mechanisms in the 3D flow field and gas diffusion layer (GDL) of proton exchange membrane fuel cells are not fully understood. In this study, the GDL structure was reconstructed using micro-CT technology, and the two-phase flow behavior in the 3D fine-mesh flow field (FMFF) and GDL was simulated and analyzed using the phase-field lattice Boltzmann method. The results show that the FMFF significantly enhances gas convection in both the flow field and GDL, reduces liquid water saturation, increases the pore area for gas transport at the interface between the two, and makes the distribution of gas and liquid in the GDL more uniform. Liquid water tends to accumulate above the air stagnation zone and below the concave baffle. Additionally, increasing the gas flow rate reduces the liquid water volume transported to the upper side of the flow field plate. Hydrophilic flow field plates facilitate liquid water transport above the plate but tend to accumulate liquid water in the flow field; conversely, hydrophobic flow field plates exhibit the opposite behavior. Comprehensive analysis reveals that flow field plates with a contact angle between 90° and 110° offer the most balanced performance.</div></div>","PeriodicalId":336,"journal":{"name":"International Journal of Heat and Mass Transfer","volume":"244 ","pages":"Article 126987"},"PeriodicalIF":5.0,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143686834","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}

引用次数: 0

Comprehensive analysis of half-wave continuous cooling channels in performance of proton exchange membrane fuel cells

IF 5 2区工程技术

International Journal of Heat and Mass Transfer Pub Date : 2025-03-19 DOI: 10.1016/j.ijheatmasstransfer.2025.126971

Tailing Huang , Pintao Zou , Yufan Xiao , Wu Ding , Rongyi Ke , Yan Zhang , Zhongmin Wan , Zhengkai Tu , Siyu Tang , Wei Zeng

{"title":"Comprehensive analysis of half-wave continuous cooling channels in performance of proton exchange membrane fuel cells","authors":"Tailing Huang , Pintao Zou , Yufan Xiao , Wu Ding , Rongyi Ke , Yan Zhang , Zhongmin Wan , Zhengkai Tu , Siyu Tang , Wei Zeng","doi":"10.1016/j.ijheatmasstransfer.2025.126971","DOIUrl":"10.1016/j.ijheatmasstransfer.2025.126971","url":null,"abstract":"<div><div>Efficient thermal management is essential to address the problem of heat buildup and uneven temperature distribution in Proton Exchange Membrane Fuel Cells (PEMFCs), Optimizing cooling channel design is key to achieving this. This study introduces a novel half-wave continuous cooling channel structure, comparing the thermal and performance characteristics of PEMFCs with both half-wave continuous and traditional cooling channels key performance metrics, including the heat transfer Performance Evaluation Criterion (PEC), the Index of Uniform Temperature on the membrane (IUT), and the Nusselt number (Nu), were used to assess heat transfer effectiveness. Compared to traditional single-channel designs, the half-wave continuous single channel achieved a 0.21 K reduction in maximum membrane temperature, a 0.18 K decrease, in temperature variation, and a 25.7 % reduction in pressure loss. Further analysis of half-wave structural parameters revealed optimal performance at a waveform of 0.15sin(0.7πx), enhancing heat transfer efficiency by 21 % relative to traditional channels. When implemented in a single cell, the half-wave continuous structure design improved power output by 1.6 % compared to conventional single cell. The cooling channel effectively minimized localized high temperatures on the membrane, promoting a more uniform temperature distribution and improving membrane water distribution, enhancing both water and thermal management within the fuel cell.</div></div>","PeriodicalId":336,"journal":{"name":"International Journal of Heat and Mass Transfer","volume":"244 ","pages":"Article 126971"},"PeriodicalIF":5.0,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143686835","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}

引用次数: 0

Multi-chip Jet impingement cooling for heat dissipation in 2.5D integrated system with 1 kW+ thermal design power

IF 5 2区工程技术

International Journal of Heat and Mass Transfer Pub Date : 2025-03-19 DOI: 10.1016/j.ijheatmasstransfer.2025.126978

Akshat Patel, Ketan Yogi, Gopinath Sahu, Tiwei Wei

{"title":"Multi-chip Jet impingement cooling for heat dissipation in 2.5D integrated system with 1 kW+ thermal design power","authors":"Akshat Patel, Ketan Yogi, Gopinath Sahu, Tiwei Wei","doi":"10.1016/j.ijheatmasstransfer.2025.126978","DOIUrl":"10.1016/j.ijheatmasstransfer.2025.126978","url":null,"abstract":"<div><div>High-Performance computing (HPC) systems have multiple chips with dissimilar thermal dissipation and temperature constraints, integrated over a silicon interposer embedded with copper metal through silicon vias (TSVs), which makes its thermal management challenging. Temperature constraints of all chips are to be fulfilled simultaneously while also accounting for the complex thermal interactions among the chips through the interposer. This study experimentally and numerically investigates the performance of jet impingement cooling for a HPC system with a logic chip and four high bandwidth memory (HBM) chips, realized through copper blocks. The incoming fluid first impinges over the HBMs and is then redirected towards logic chip to impinge again, thus cooling the HBMs and Logic chip in series. The cooling strategy was able to achieve an unprecedented 1.86 kW of thermal design power subjected to maximum temperature constraint 105 °C and 85 °C for logic chip and HBMs, respectively. The minimum thermal resistance achieved was 0.183 cm<sup>2</sup>.K/W while managing a logic chip heat flux as high as 252 W/cm<sup>2</sup>. The corresponding pressure drop was a modest 48.32 kPa for a net chip area of 1060 mm<sup>2</sup>. Surface temperature measurements at various locations over logic chip (676 mm<sup>2</sup>) reveal that surface temperature uniformity is within 3 °C even at the highest TDP. Comparison of series and parallel design, using numerical model, reveals the former's superior thermal performance and the ability to support HPCs with higher TDPs, subjected to the aforementioned temperature constraints.</div></div>","PeriodicalId":336,"journal":{"name":"International Journal of Heat and Mass Transfer","volume":"244 ","pages":"Article 126978"},"PeriodicalIF":5.0,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143686837","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}

引用次数: 0

Software cooling approach enables efficient and cost-effective thermal management of multicore systems

IF 5 2区工程技术

International Journal of Heat and Mass Transfer Pub Date : 2025-03-19 DOI: 10.1016/j.ijheatmasstransfer.2025.126937

Kaihang Zhou , Yimin Xuan , Dinghua Hu , Qiang Li

{"title":"Software cooling approach enables efficient and cost-effective thermal management of multicore systems","authors":"Kaihang Zhou , Yimin Xuan , Dinghua Hu , Qiang Li","doi":"10.1016/j.ijheatmasstransfer.2025.126937","DOIUrl":"10.1016/j.ijheatmasstransfer.2025.126937","url":null,"abstract":"<div><div>The relentless pursuit of high-performance electronic devices has driven semiconductor technology toward relentless miniaturization and integration. While this advancement enhances computational capabilities, it concurrently reduces chip heat capacities and diminishes thermal inertia. Traditional hardware-based thermal management strategies face inherent limitations, including temporal heat transfer mismatches, physical size constraints, and prohibitive economic costs. To address these challenges, this study proposes a software-driven thermal management approach that achieves cost-effective thermal regulation under constrained hardware package conditions. More importantly, it effectively mitigates temperature rises caused by transient thermal pulse—a capability lacking in traditional hardware cooling. Long short-term memory (LSTM) model, a type of recurrent neural network (RNN) has been successfully integrated into our framework to enable precise temperature prediction. The combination of LSTM and ant colony optimization (ACO) algorithm enables the scheduler to output the best allocation scheme. Results indicate that this approach achieves more than 6℃ decrease of mean peak temperature and 8% decrease of percentage of hotspots, while also reducing communication energy by 15% compared to existing software level thermal management technologies. External cooling resources (thermoelectric cooler) are incorporated into the task allocation algorithm for the first time. In the presence of local TEC, our approach performs best thermal performance. The feasibility of this approach under different workloads and platform sizes is also validated. Such software cooling approach provides valuable insights into the field of thermal management for electronic devices.</div></div>","PeriodicalId":336,"journal":{"name":"International Journal of Heat and Mass Transfer","volume":"244 ","pages":"Article 126937"},"PeriodicalIF":5.0,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143686838","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}

引用次数: 0

Turbulent structures and associated Reynolds shear stress in an impinging jet

IF 5 2区工程技术

International Journal of Heat and Mass Transfer Pub Date : 2025-03-19 DOI: 10.1016/j.ijheatmasstransfer.2025.126948

Xusheng Zhou , Haijin Huang , Yaan Hu , Ming Chen , Lanbin Yang , Peng Jiang

{"title":"Turbulent structures and associated Reynolds shear stress in an impinging jet","authors":"Xusheng Zhou , Haijin Huang , Yaan Hu , Ming Chen , Lanbin Yang , Peng Jiang","doi":"10.1016/j.ijheatmasstransfer.2025.126948","DOIUrl":"10.1016/j.ijheatmasstransfer.2025.126948","url":null,"abstract":"<div><div>The Reynolds shear stress is closely related to the turbulent structures in shear flows. In this paper, the principal turbulent structures and the mechanisms of the associated Reynolds shear stress generation in an impinging jet were examined. A two-dimensional particle image velocimetry system was used to measure the flow field on the axisymmetric plane of the impinging jet. Three Reynolds numbers were considered: 4200, 8179, and 13,926, with the impingement distance fixed at 6 <em>d</em> (<em>d</em> represents the internal diameter of the jet nozzle). The results illustrate that although the inner edge of the free-jet shear layer is dominated by ejection events, the Reynolds shear stress produced by sweep events in this region is relatively large. In the outer edge of the free-jet shear layer, sweep events occur more frequently than ejection events, but the Reynolds shear stress produced by the latter is higher. For the wall-jet shear layer, high-frequency sweep events are observed near the half-width, whereas ejection events produce higher Reynolds shear stress. Conditional averaging of the instantaneous momentum flux and fluctuating velocities around the vortex cores suggests that the observed phenomena are attributed to differences in the intensity of ejection and sweep events induced by vortices in each region. Overall, this study further reveals the turbulent structures in the impinging jet shear layer and provides a deeper understanding of the connection between these turbulent structures and Reynolds shear stress. The results are critical for optimizing the performance of impinging jets in heat and mass transfer applications.</div></div>","PeriodicalId":336,"journal":{"name":"International Journal of Heat and Mass Transfer","volume":"244 ","pages":"Article 126948"},"PeriodicalIF":5.0,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143686795","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}

引用次数: 0

Long range surface plasmon resonance induced mid-infrared Fano resonance and the mediated nonreciprocal thermal radiation

IF 5 2区工程技术

International Journal of Heat and Mass Transfer Pub Date : 2025-03-19 DOI: 10.1016/j.ijheatmasstransfer.2025.126967

Xin Cui , Fenglin Xian , Liming Qian , Zhaolou Cao , Shixin Pei , Gaige Zheng

{"title":"Long range surface plasmon resonance induced mid-infrared Fano resonance and the mediated nonreciprocal thermal radiation","authors":"Xin Cui , Fenglin Xian , Liming Qian , Zhaolou Cao , Shixin Pei , Gaige Zheng","doi":"10.1016/j.ijheatmasstransfer.2025.126967","DOIUrl":"10.1016/j.ijheatmasstransfer.2025.126967","url":null,"abstract":"<div><div>Nonreciprocal thermal radiation (NTR) has attracted significant attention, which offers a broader control over radiative heat transfer beyond conventional limits. Manipulating NTR involves creating systems with various strategy where heat transfer depends on the direction of energy flow, breaking traditional reciprocity. Here, we consider a Kretschmann configuration that consists of a germanium (Ge) prism, barium fluoride (BaF<sub>2</sub>), Weyl semimetal (WSM) layer, BaF<sub>2</sub> and zinc selenide (ZnSe). Long range surface plasmon resonance (LRSPR) is expected to be excited at resonance of <span><math><mrow><mn>10</mn><mo>.</mo><mn>8</mn><mspace></mspace><mi>μ</mi><mi>m</mi></mrow></math></span> with a narrow resonance dip. Asymmetric Fano resonance (FR) will be achieved by the strong coupling between waveguide mode (WGM) and long-range surface plasmon polaritons (LRSPPs). This FR can bring about narrowband and directional thermal emission, which can also boost the contrast between the emissivity and absorptivity in a broad range of structural parameters. The underlying physical principles of the device are elucidated through the examination of magnetic field distributions. The proposed configuration shows great potential mid-IR thermal radiation regulation.</div></div>","PeriodicalId":336,"journal":{"name":"International Journal of Heat and Mass Transfer","volume":"244 ","pages":"Article 126967"},"PeriodicalIF":5.0,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143686836","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}

引用次数: 0

Boiling heat transfer with a microporous heating surface in a narrow gap with cover plates of different wettability

IF 5 2区工程技术

International Journal of Heat and Mass Transfer Pub Date : 2025-03-18 DOI: 10.1016/j.ijheatmasstransfer.2025.126956

Aqsa Rukhsar , Dani Fadda , Jungho Lee , Seung M. You

{"title":"Boiling heat transfer with a microporous heating surface in a narrow gap with cover plates of different wettability","authors":"Aqsa Rukhsar , Dani Fadda , Jungho Lee , Seung M. You","doi":"10.1016/j.ijheatmasstransfer.2025.126956","DOIUrl":"10.1016/j.ijheatmasstransfer.2025.126956","url":null,"abstract":"<div><div>An experimental study on boiling heat transfer with distilled water and a copper high-temperature thermally-conductive microporous coating (Cu-HTCMC) is performed in a narrow gap of 0.64, 1, 2, 3, and 5 mm thickness with hydrophilic and hydrophobic cover plates having apparent contact angles of 11°, 70°, and 150°. The parahydrophobic nature of the microporous copper coating and the interconnected channels within the coating allow the heating surface to stay wet and the boiling heat transfer performance to significantly exceed that of an uncoated copper surface. A hydrophobic cover plate causes stratified flow in the narrow gap, while a hydrophilic cover plate causes a laterally growing bubble in the gap. Regardless of the cover plate wettability, the wall superheat follows the unconfined case without any deterioration in the narrow gap up to the dryout heat flux due to the Cu-HTCMC on the boiling surface. Furthermore, minimal reduction in the critical heat flux is observed in narrow gap boiling with a hydrophobic cover plate, but significant reduction is observed with hydrophilic cover plates. The wettability effect diminishes as the gap size ≤ 1 mm since the vapor fills the narrow gap. For such gap sizes, the heat transfer coefficient enhancement is observed at low heat flux, followed by a sudden drop when vapor fills the gap and the surface struggles to stay wet.</div></div>","PeriodicalId":336,"journal":{"name":"International Journal of Heat and Mass Transfer","volume":"244 ","pages":"Article 126956"},"PeriodicalIF":5.0,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143686830","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}

引用次数: 0

Thermoelastic dynamic response analysis of graphene-reinforced composite piezoelectric plate subjected to a thermal shock

IF 5 2区工程技术

International Journal of Heat and Mass Transfer Pub Date : 2025-03-18 DOI: 10.1016/j.ijheatmasstransfer.2025.126952

Lingchen Tian , Zailin Yang

{"title":"Thermoelastic dynamic response analysis of graphene-reinforced composite piezoelectric plate subjected to a thermal shock","authors":"Lingchen Tian , Zailin Yang","doi":"10.1016/j.ijheatmasstransfer.2025.126952","DOIUrl":"10.1016/j.ijheatmasstransfer.2025.126952","url":null,"abstract":"<div><div>Graphene nanoplates (GPLs) reinforced composite piezoelectric structures have become popular choices in composite material structures due to their superior thermodynamic attributes. However, considering the thermal hysteresis effect of composite structure, the classical heat conduction model cannot explain the thermodynamic behaviour. This study intends to fill these gaps by studying the thermoelastic response of the graphene-reinforced piezoelectric plate within the framework of the three-phase-lag (TPL) generalized thermoelastic theory. Firstly, four distribution patterns of GPLs, including UD, FG-O, FG-X and FG-A distribution patterns are considered, and the effective properties of the lamellar nanocomposites are evaluated by the Halpin-Tsai model. Secondly, the energy and the motion eq.s of the piezoelectric plate reinforced with GPLs based on the TPL generalized thermoelasticity are solved. The Laplace transform method and its numerical inversion are used to derive and solve the associated governing equations The effects of thermal relaxation time, weight fraction of GPLs and time on the thermoelastic response are discussed in detail. The results indicate that each physical quantity will increase with the increase of time, and the changes in these physical quantities are related to each other. The increase of GPLs content promotes the propagation of elastic and thermal waves. It provides a theoretical basis for the design of sensors and other devices based on graphene-reinforced composite piezoelectric plates.</div></div>","PeriodicalId":336,"journal":{"name":"International Journal of Heat and Mass Transfer","volume":"244 ","pages":"Article 126952"},"PeriodicalIF":5.0,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143686831","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}

引用次数: 0

Generalized physics-based cavitation model encompassing multiple cavitation regimes

IF 5 2区工程技术

International Journal of Heat and Mass Transfer Pub Date : 2025-03-18 DOI: 10.1016/j.ijheatmasstransfer.2025.126898

Lester Toledo , Kyungjun Choi , Hyunji Kim , Chongam Kim

{"title":"Generalized physics-based cavitation model encompassing multiple cavitation regimes","authors":"Lester Toledo , Kyungjun Choi , Hyunji Kim , Chongam Kim","doi":"10.1016/j.ijheatmasstransfer.2025.126898","DOIUrl":"10.1016/j.ijheatmasstransfer.2025.126898","url":null,"abstract":"<div><div>Accurate modeling of multiple cavitation regimes and their thermodynamic effects remains a challenge. This study extends the baseline physics-based cavitation model to a generalized form, encompassing the inertial, intermediate, and thermal cavitation regimes including the extreme thermal regime at very low Jakob number. For this purpose, a single bubble growth rate that is valid over a broad range of Jakob number is formulated. The dynamics of intermediate regime is captured by employing local pressure and temperature conditions. Key physical corrections for the bubble growth initiation, time delay, and growth acceleration are taken into account. The proposed cavitation model is then carefully validated and critically assessed with a series of test cases including homogeneous bubble growth over multiple cavitation regimes, cryogenic and isothermal cavitating flows. The bubble growth tests confirm its superior performance, particularly in the intermediate regime, and yield an excellent agreement with the experimental bubble growth curve over the entire bubble growth regime. Other computed results also show accurate capturing of cavitation features and thermal effects, demonstrating its utility in a wide range of operation conditions. Especially, the physical mechanism of multiple bubble pulsations is unveiled by analyzing the contribution of bubble growth rate from each cavitation regime.</div></div>","PeriodicalId":336,"journal":{"name":"International Journal of Heat and Mass Transfer","volume":"244 ","pages":"Article 126898"},"PeriodicalIF":5.0,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143641725","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}

引用次数: 0

Effect of thermophysical properties of perovskite electrolytes on intermediate temperature SOFC

IF 5 2区工程技术

International Journal of Heat and Mass Transfer Pub Date : 2025-03-18 DOI: 10.1016/j.ijheatmasstransfer.2025.126944

Baitong Wang, Mingshang Liu, Zide Wu, Xun Liu, Mu Li, Dawei Tang

{"title":"Effect of thermophysical properties of perovskite electrolytes on intermediate temperature SOFC","authors":"Baitong Wang, Mingshang Liu, Zide Wu, Xun Liu, Mu Li, Dawei Tang","doi":"10.1016/j.ijheatmasstransfer.2025.126944","DOIUrl":"10.1016/j.ijheatmasstransfer.2025.126944","url":null,"abstract":"<div><div>Solid oxide fuel cell (SOFC) has captured significant interest and the electrolyte material is the key during operating. The present work introduces a series of intermediate temperature perovskite materials regarding of synthesis and characterization method. Corresponding thermophysical properties including thermal diffusivity, specific heat and thermal conductivity were determined at relevant temperature range. The result shows that thermal diffusivity has a stable tendency for the intermediate temperature electrolytes materials; Ba<sub>3</sub>NbMoO<sub>8.5</sub> has the highest specific heat and BaSc<sub>0.8</sub>MoNb<sub>0.2</sub>O<sub>2.8</sub> has the highest thermal conductivity at 873 K. Besides, a 3-D model is established including transient state and steady state. After combining intermediate temperature electrolyte materials with different thermophysical properties, it is found that the maximum temperature gradient and thermal shock exist at switching time (<em>t</em> = 600 s) and the tendency are controversial for each other. Besides, after comparing different supported structure of SOFC, a systematic selection strategy is provided for IT-SOFC application. Cathode-supported structure SOFC is an ideal choice for long term usage, which has a low temperature gradient; whereas electrolyte-supported structure with Na<sub>0.5</sub>Bi<sub>0.5</sub>TiO<sub>3</sub> electrolyte is beneficial to quick start-up system, which has the lowest thermal shock.</div></div>","PeriodicalId":336,"journal":{"name":"International Journal of Heat and Mass Transfer","volume":"244 ","pages":"Article 126944"},"PeriodicalIF":5.0,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143686832","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}

引用次数: 0