International Communications in Heat and Mass Transfer最新文献_第4页

Hybrid lattice Boltzmann-finite volume method for solving coupled radiation-convection heat transfer in complex geometries 复合晶格玻尔兹曼-有限体积法求解复杂几何辐射-对流耦合传热

IF 6.4 2区工程技术

International Communications in Heat and Mass Transfer Pub Date : 2025-04-18 DOI: 10.1016/j.icheatmasstransfer.2025.108963

Hongchao Miao , Lin Mu , Hongchao Yin , Shuang Wang , Ming Dong , Yan Shang , Hang Pu

{"title":"Hybrid lattice Boltzmann-finite volume method for solving coupled radiation-convection heat transfer in complex geometries","authors":"Hongchao Miao , Lin Mu , Hongchao Yin , Shuang Wang , Ming Dong , Yan Shang , Hang Pu","doi":"10.1016/j.icheatmasstransfer.2025.108963","DOIUrl":"10.1016/j.icheatmasstransfer.2025.108963","url":null,"abstract":"<div><div>An integrated algorithm was established for the first time to investigate coupled radiation-convection heat transfer in complex geometries. The radiative transfer equation was solved using the finite volume method with pseudo-time stepping. An immersed-boundary method based on an implicit diffuse interface was employed to impose irregular boundaries. The proposed algorithm was successfully implemented within the framework of the thermal lattice Boltzmann method. In the participatory medium, the precision and performance of the algorithm were inspected in terms of natural convection with systematic parameters including the optical thickness, Planck number, wall emissivity, scattering albedo, and forced convection at various Reynolds numbers. The superior performance of the present approach results from the encrypted non-uniform mesh improving the computational accuracy, saving resources, and not requiring extraordinary treatment for arbitrary shape boundaries. Thermal plumes and static bifurcations are remarkable phenomena that emerge owing to environmental influences. The results indicate that radiation dominates the heat transfer around the annulus in natural convection at low <em>Pl</em> and <em>τ</em>, whereas its imperceptible effects on forced convection are alleviated as the increases of <em>Re</em>. The thermohydrodynamic characteristics of radiation and geometry are of immediate significance in such scientific and engineering problems.</div></div>","PeriodicalId":332,"journal":{"name":"International Communications in Heat and Mass Transfer","volume":"164 ","pages":"Article 108963"},"PeriodicalIF":6.4,"publicationDate":"2025-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143844301","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

Experimental investigation on anti-frosting characteristics of biphilic surfaces coupled with hygroscopic droplets for frosting control 双亲表面与吸湿液滴耦合防霜特性的实验研究

IF 6.4 2区工程技术

International Communications in Heat and Mass Transfer Pub Date : 2025-04-18 DOI: 10.1016/j.icheatmasstransfer.2025.108971

Wei Su , Dahai Zhao , Xu Jin , Zhongyan Liu , Qian Yu , Xiaosong Zhang

{"title":"Experimental investigation on anti-frosting characteristics of biphilic surfaces coupled with hygroscopic droplets for frosting control","authors":"Wei Su , Dahai Zhao , Xu Jin , Zhongyan Liu , Qian Yu , Xiaosong Zhang","doi":"10.1016/j.icheatmasstransfer.2025.108971","DOIUrl":"10.1016/j.icheatmasstransfer.2025.108971","url":null,"abstract":"<div><div>The inhibition of condensation frosting is of fundamental importance for various anti-frosting applications. However, icing on the entire surface is ultimately inevitable for most passive anti-frosting strategies due to the freezing of subcooled droplets on surface edge or defect and the subsequent frosting propagation. Herein, we design six patterned biphilic surfaces for changing the spatial distribution of hygroscopic droplets, and further control vapor diffusion flux during the initial stage of condensation frosting, achieving efficient and long-lasting frost prohibition. Discontinuous Ringlike stripe Biphilic with breakpoint overcomes the inhomogeneous accumulation behavior of the hygroscopic solution and enhanced surface water vapor pressure field, which delays the emergence and freezing of condensing droplets on the surface and reduces the frost propagation velocity. Under conditions of a surface temperature of −10 °C and a relative humidity of 50 %, the overall anti-icing duration reached 386–423 min, with the frost delay time being 15 to 20 times longer than that of conventional superhydrophobic surfaces. The results highlight the critical role of the surface water vapor pressure and vapor flux in influencing the kinetics of condensed droplet embryo formation and frost propagation kinetics, expand the application of hygroscopic solutions and biphilic surfaces, and provide valuable insights into the design of surfaces with tailored antifreeze properties for a variety of applications</div></div>","PeriodicalId":332,"journal":{"name":"International Communications in Heat and Mass Transfer","volume":"164 ","pages":"Article 108971"},"PeriodicalIF":6.4,"publicationDate":"2025-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143844298","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

Numerical analysis of fast cook-off and case failure characteristics of solid rocket motor with AP/HTPE star-charged AP/HTPE星形充电固体火箭发动机快速熄火及壳体失效特性数值分析

IF 6.4 2区工程技术

International Communications in Heat and Mass Transfer Pub Date : 2025-04-18 DOI: 10.1016/j.icheatmasstransfer.2025.108975

Kaile He, Yonggang Yu

{"title":"Numerical analysis of fast cook-off and case failure characteristics of solid rocket motor with AP/HTPE star-charged","authors":"Kaile He, Yonggang Yu","doi":"10.1016/j.icheatmasstransfer.2025.108975","DOIUrl":"10.1016/j.icheatmasstransfer.2025.108975","url":null,"abstract":"<div><div>To investigate the cook-off response and heat transfer in AP (ammonium perchlorate)/HTPE (hydroxyl-terminated polyether) solid rocket motor (SRM) under fast cook-off conditions (FCC), a three-dimensional numerical model based on the BDP (Becksted-Derr-Price), chemical-thermal decomposition scheme was developed. This model incorporates propellant ignition and combustion reactions. The study conducted numerical simulations under FCC with heating rates of 1.6 K/s to 2.4 K/s. the grid-node separation method was used to effectively characterize the motor casing's dynamic response during large deformations. Results show that ignition occurs in the propellant's bottom annular region, with multiple hot spots forming simultaneously. The ignition delay time is linearly related to the heating rate, and varying heating rates did not significantly affect ignition temperature. Post-ignition, combustion pressure caused limited casing damage, with no detonation. The motor case remained largely intact, though severe deformation and fragmentation occurred near the ignition site, accompanied by longitudinal cracks.</div></div>","PeriodicalId":332,"journal":{"name":"International Communications in Heat and Mass Transfer","volume":"164 ","pages":"Article 108975"},"PeriodicalIF":6.4,"publicationDate":"2025-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143847350","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

Advanced heat sink designs for high-efficiency thermal management in concentrated photovoltaic systems 用于聚光光伏系统高效热管理的先进散热器设计

IF 6.4 2区工程技术

International Communications in Heat and Mass Transfer Pub Date : 2025-04-17 DOI: 10.1016/j.icheatmasstransfer.2025.108965

Morteza Khoshvaght-Aliabadi , Parvaneh Ghodrati , Yong Tae Kang

{"title":"Advanced heat sink designs for high-efficiency thermal management in concentrated photovoltaic systems","authors":"Morteza Khoshvaght-Aliabadi , Parvaneh Ghodrati , Yong Tae Kang","doi":"10.1016/j.icheatmasstransfer.2025.108965","DOIUrl":"10.1016/j.icheatmasstransfer.2025.108965","url":null,"abstract":"<div><div>In concentrated photovoltaic (CPV) systems, thermal management is typically achieved through active cooling techniques to prevent efficiency degradation and cell damage. However, a key limitation of these techniques is their inability to maintain uniform temperatures across all cells. This study explores advanced liquid-cooled aluminum heat sink designs with novel fin arrangements under varying concentration ratios, to identify the optimal configuration for maximum temperature uniformity. The findings reveal that while integral fin designs achieve lower cell temperatures and reduce thermal stress, interrupted fin designs offer superior temperature uniformity and help decrease pumping power and unit weight. Specifically, the improvements in temperature uniformity for interrupted fin designs with 1, 2, 3, and 4 fin rows are 15 %, 17.2 %, 30.6 %, and 29.1 %, respectively. The best temperature uniformity is achieved with enhanced fin designs that incorporate a higher fin density in the downstream region of the heat sink, ensuring a temperature difference of less than 1 K between cells. The optimal design achieves an overall thermal-hydraulic performance of 1.38 under high and ultra-high conditions, with a maximum thermal stress of 37.59 MPa. Additionally, this configuration results in the smallest weight increase of the cooling unit (22.5 %) compared to the finless model.</div></div>","PeriodicalId":332,"journal":{"name":"International Communications in Heat and Mass Transfer","volume":"164 ","pages":"Article 108965"},"PeriodicalIF":6.4,"publicationDate":"2025-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143838624","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

Stress-blended eddy simulation of shock and film cooling for trailing edge cutback in supersonic flow 超声速流动后缘激波和气膜冷却的应力混合涡模拟

IF 6.4 2区工程技术

International Communications in Heat and Mass Transfer Pub Date : 2025-04-17 DOI: 10.1016/j.icheatmasstransfer.2025.108961

Wei Du , Qiankun Jia , Lei Luo , Han Yan , Xingchen Li , Yinghou Jiao

{"title":"Stress-blended eddy simulation of shock and film cooling for trailing edge cutback in supersonic flow","authors":"Wei Du , Qiankun Jia , Lei Luo , Han Yan , Xingchen Li , Yinghou Jiao","doi":"10.1016/j.icheatmasstransfer.2025.108961","DOIUrl":"10.1016/j.icheatmasstransfer.2025.108961","url":null,"abstract":"<div><div>This study employs stress-blended eddy simulation to examine shock interference and film cooling behavior in a supersonic crossflow. Coolant coverage and fluid dynamics are evaluated at two mass flow ratios (<em>MFR</em>) and four typical lip shapes. Numerical schlieren techniques effectively capture shock-expansion wave dynamics, providing the flow behavior visualization. The complete wave system includes the strong shock-separation shock on the pressure lip and symmetric lip-shocks accompanied by an expansion fan on the suction lip. Notably, the weak shock II is identified as a key factor influencing transient heat transfer and coolant mixing downstream of the cutback. Film cooling efficiency in supersonic crossflow is shown to depend strongly on coolant momentum. Quantitatively, the area-averaged cooling efficiency increased by a maximum of 28.5 % as the <em>MFR</em> increased. At lower <em>MFR</em>, variations in the recirculation zone and the interaction with Shock II reveal how lip geometry impacts cooling performance. Additionally, instantaneous film instability is analyzed to understand their impact on wall thermal integrity. Among the designs examined, the down-round lip design offers superior cooling performance at lower coolant. These findings provide new insights into supersonic cutback film cooling and contribute to advancements in managing compressible flow for improved thermal protection.</div></div>","PeriodicalId":332,"journal":{"name":"International Communications in Heat and Mass Transfer","volume":"164 ","pages":"Article 108961"},"PeriodicalIF":6.4,"publicationDate":"2025-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143838623","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

Thermoforming and springback suppression mechanism of laser assisted multi-point forming method 激光辅助多点成形法的热成形及回弹抑制机理

IF 6.4 2区工程技术

International Communications in Heat and Mass Transfer Pub Date : 2025-04-17 DOI: 10.1016/j.icheatmasstransfer.2025.108944

Xinfu Liu , Yankuo Guo , Feng Guo , Yongjun Shi , Yingshun Dong

{"title":"Thermoforming and springback suppression mechanism of laser assisted multi-point forming method","authors":"Xinfu Liu , Yankuo Guo , Feng Guo , Yongjun Shi , Yingshun Dong","doi":"10.1016/j.icheatmasstransfer.2025.108944","DOIUrl":"10.1016/j.icheatmasstransfer.2025.108944","url":null,"abstract":"<div><div>Multi-point forming (MPF) has unparalleled advantages in forming small-lot parts. However, the method has the disadvantage of large springback, which seriously affects the forming efficiency and accuracy. For this reason, a method of adding a laser into MPF (laser assisted MPF-LAMPF) is proposed. A numerical simulation model of LAMPF is established, and the forming and springback mechanisms of LAMPF are analyzed. In addition, the effects of different temperature values on the forming and springback of LAMPF are investigated. The results show that LAMPF can improve the forming value by 1.6 times and reduce the springback value by 67.3 % compared to the traditional MPF. The plastic zone of MPF is the load zone, and the springback zone is the transition zone and heat source zone. In contrast, the plastic zone of LAMPF is the load zone and heat source zone, and the springback zone is the transition zone. The laser has two roles in the LAMPF. One is that the heat generated by the laser can be directly involved in the plastic forming of the heat source zone so that the heat source zone is transformed from the elastic area to the plastic area. The other is that the laser heat lowers the yield strength threshold of the entire azimuthal section, which results in more elastic strain that can be easily converted into plastic strain. Further elevation of temperature can increase the forming value of LAMPF by a factor of 1.7 and suppress the springback value by 95.6 %. This is because elevating the temperature further expands the plastic strain area in the heat source and load zones and further compresses the elastic strain area in the transition zone. This method presents a new idea of thermally lowering the yield strength threshold to increase efficiency and reduce springback, which can provide a theoretical reference for the research of MPF in the field of thermoforming.</div></div>","PeriodicalId":332,"journal":{"name":"International Communications in Heat and Mass Transfer","volume":"164 ","pages":"Article 108944"},"PeriodicalIF":6.4,"publicationDate":"2025-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143838622","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

Numerical simulation of the cooling process of TNT and Composition B explosives TNT 和 B 族炸药冷却过程的数值模拟

IF 6.4 2区工程技术

International Communications in Heat and Mass Transfer Pub Date : 2025-04-16 DOI: 10.1016/j.icheatmasstransfer.2025.108953

Samuel M. Barros , Bruna R. Loiola

{"title":"Numerical simulation of the cooling process of TNT and Composition B explosives","authors":"Samuel M. Barros , Bruna R. Loiola","doi":"10.1016/j.icheatmasstransfer.2025.108953","DOIUrl":"10.1016/j.icheatmasstransfer.2025.108953","url":null,"abstract":"<div><div>The present work numerically investigates the influence of the cooling method on the casting of TNT and Composition B explosives. The first approach uses a heating hood on top of the cylindrically shaped grenade to guide the solidification movement. The second method considers a heating probe inserted into the molten explosive. The numerical simulations were obtained using the enthalpy method in ANSYS Fluent software. The numerical verification was accomplished by comparing it with previously published studies. The results of the simulations for the solidification front and the temperature distribution are discussed. It was found that the solidification process using a heating hood leads to a higher portion of liquid explosive concentrate at the top, which could be an advantage compared to end processes in the middle of the explosive. Solidification using the probe heating method also showed the benefit of continuing melting the region above it while the probe is removed, which can prevent void formation. Finally, the explosive's thermophysical properties directly influence the solidification process's velocity. It was concluded that the cooling method using a heating probe takes a longer time to finish, which must be considered during the design of loading processes using the casting method.</div></div>","PeriodicalId":332,"journal":{"name":"International Communications in Heat and Mass Transfer","volume":"164 ","pages":"Article 108953"},"PeriodicalIF":6.4,"publicationDate":"2025-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143834026","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

Simulation of condensation process with different fluids in micro and nanochannels to investigate the wall material, curvature of the channel, and electric and magnetic fields using the molecular dynamics approach 用分子动力学方法模拟微纳米通道中不同流体的凝结过程，研究通道壁材料、通道曲率以及电场和磁场

IF 6.4 2区工程技术

International Communications in Heat and Mass Transfer Pub Date : 2025-04-16 DOI: 10.1016/j.icheatmasstransfer.2025.108951

Zekun Liu , Mengxia Wang , Nafiseh Emami , Soheil Salahshour , Riadh Marzouki

{"title":"Simulation of condensation process with different fluids in micro and nanochannels to investigate the wall material, curvature of the channel, and electric and magnetic fields using the molecular dynamics approach","authors":"Zekun Liu , Mengxia Wang , Nafiseh Emami , Soheil Salahshour , Riadh Marzouki","doi":"10.1016/j.icheatmasstransfer.2025.108951","DOIUrl":"10.1016/j.icheatmasstransfer.2025.108951","url":null,"abstract":"<div><div>Nowadays, computer simulations are a suitable tool for understanding physical phenomena. This paper examined the condensation process of various fluids in micro/nanochannels (MCs/NCs) using molecular dynamics simulations (MDS). The present study examined the condensation time in MCs and NCs across different base fluid types, atomic materials, the number of atomic curvatures (NAC), and the intensities of electric field (EF) and magnetic field (MF). The results reveal that the time required for phase change (condensation) in the helium (He) fluid-structure was less in MCs (2.91 ns) and NCs (2.72 ns) compared to other samples. Changing the atomic materials of MCs and NCs (copper (Cu), platinum (Pt), and Cu/Pt) showed that Pt reduced the condensation times to 2.62 ns for MCs and 2.58 ns for NCs. To enhance atomic interactions in the simulated MCs and NCs, the NAC was modeled at 1, 2, and 3. Increasing the NAC in MCs and NCs decreased the condensation times from 2.91 ns and 2.72 ns to 2.62 ns and 2.58 ns, respectively. The results indicate that condensation time decreases as NAC increases. Increasing the intensities of EF and MF enhanced a fluid's atomic mobility and kinetic energy (KE). Applying an EF with magnitudes of 0, 1, 2, and 5 V/m increased the condensation times of MCs and NCs from 2.91 ns and 2.72 ns to 3.39 ns and 3.36 ns, respectively. Additionally, changing the intensity of MF altered the phase change times in MCs and NCs to 3.17 ns and 3.15 ns, respectively.</div></div>","PeriodicalId":332,"journal":{"name":"International Communications in Heat and Mass Transfer","volume":"164 ","pages":"Article 108951"},"PeriodicalIF":6.4,"publicationDate":"2025-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143834025","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

Study on the diffusion characteristics of small hole leakage of high-sulfur natural gas in gathering and transmission pipelines 高硫天然气集输管道小孔泄漏扩散特性研究

IF 6.4 2区工程技术

International Communications in Heat and Mass Transfer Pub Date : 2025-04-15 DOI: 10.1016/j.icheatmasstransfer.2025.108942

Le Hao , Xiaowei Zhai , Kai Wang

{"title":"Study on the diffusion characteristics of small hole leakage of high-sulfur natural gas in gathering and transmission pipelines","authors":"Le Hao , Xiaowei Zhai , Kai Wang","doi":"10.1016/j.icheatmasstransfer.2025.108942","DOIUrl":"10.1016/j.icheatmasstransfer.2025.108942","url":null,"abstract":"<div><div>The high‑sulfur natural gas contains hydrogen sulfide, which is extremely corrosive and toxic. Its leakage can cause irreversible environmental consequences. This study establishes a high‑sulfur natural gas pipeline leakage model using the three-dimensional CFD numerical calculation method in FLACS. The influences of multiple factors on the extent of leak spread in high‑sulfur natural gas are analyzed. The results show that hydrogen sulfide content in high‑sulfur natural gas inhibits the gas diffusion range. The diffusion distance for 20 % hydrogen sulfide is 0.87 times that of 2 % hydrogen sulfide, and the diffusion height is reduced to 0.83 times due to its higher average molar mass. Pipeline pressure, leakage orifice diameter, and ambient temperature show positive correlations with diffusion distances in all three spatial dimensions. Ambient wind speed increases the horizontal dispersion but inhibits vertical diffusion. The downwind diffusion distance at 5 m/s wind speed is 1.2403 times that at 0.5 m/s, while the diffusion height is reduced to 0.5882 times.</div></div>","PeriodicalId":332,"journal":{"name":"International Communications in Heat and Mass Transfer","volume":"164 ","pages":"Article 108942"},"PeriodicalIF":6.4,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143828487","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

Flow boiling heat transfer of new refrigerant blends: Experimental data in a microchannel and modelling 新型混合制冷剂的流动沸腾传热：微通道中的实验数据和建模

IF 6.4 2区工程技术

International Communications in Heat and Mass Transfer Pub Date : 2025-04-15 DOI: 10.1016/j.icheatmasstransfer.2025.108929

Nicolò Mattiuzzo, Marco Azzolin, Arianna Berto, Stefano Bortolin, Davide Del Col

{"title":"Flow boiling heat transfer of new refrigerant blends: Experimental data in a microchannel and modelling","authors":"Nicolò Mattiuzzo, Marco Azzolin, Arianna Berto, Stefano Bortolin, Davide Del Col","doi":"10.1016/j.icheatmasstransfer.2025.108929","DOIUrl":"10.1016/j.icheatmasstransfer.2025.108929","url":null,"abstract":"<div><div>Mixtures of hydrofluorocarbons (HFCs) and hydrofluoroolefins (HFOs) are suitable as drop-in substitutes in refrigeration and air conditioning, due to the low global warming potential (GWP) and desired thermodynamic properties. In the present work, the flow boiling heat transfer of four HFOs/HFCs mixtures has been studied inside a 0.96 mm diameter channel. Three of those mixtures, R513A (R1234yf/R134a, 56/44 % by mass, GWP<sub>100-y</sub> = 629), R516A (R1234yf/R152a/R134a 77.5/14/8.5 % by mass, GWP<sub>100-y</sub> = 131) and R515B (R1234ze(E)/R227ea, 91/9 % by mass, GWP<sub>100-y</sub> = 299), are azeotropic mixtures, while the fourth is quasi-azeotropic mixture R450A (R1234ze(E)/R134a, 56/44 % by mass, GWP<sub>100-y</sub> = 547, <em>ΔT</em><sub><em>GL</em></sub> = 0.63 K at 30 °C). The experimental campaign was conducted using a test section where the flow boiling is promoted by a secondary fluid, at 30 °C mean saturation temperature and mass flux between 300 kg m<sup>−2</sup> s<sup>−1</sup> and 600 kg m<sup>−2</sup> s<sup>−1</sup>. The present data have been compared with the heat transfer coefficient of R134a, in order to assess the suitability of its drop-in substitutes. From the comparison between experimental data and the predictions from some semi-empirical models, a modified method is presented. The new flow boiling heat transfer correlation has been successfully tested with data of propane, propylene, R32 and R1234yf.</div></div>","PeriodicalId":332,"journal":{"name":"International Communications in Heat and Mass Transfer","volume":"164 ","pages":"Article 108929"},"PeriodicalIF":6.4,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143828486","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