Design and Implementation of IPsec VPN IoT Gateway System in National Secret Algorithm DOI Open Access
Yan Jiang, Jing Huang,

Y. Fan

и другие.

Journal of Cyber Security and Mobility, Год журнала: 2024, Номер unknown, С. 677 - 700

Опубликована: Июнь 14, 2024

With the development of Internet Things technology, security threats faced by industrial control field are increasing, and strengthening protection capabilities intelligent systems on IoT highways is becoming increasingly important. IPSec VPN tunneling technology can achieve identity authentication encrypted data transmission, an important means to secure transmission in Expressway tunnel system. The commonly used gateway uses a traditional Linux protocol stack-based approach for capture, which requires multiple copies context switching, resulting low efficiency services. In addition, implemented basis open-source framework, using internationally recognized algorithms encryption decryption, poses risks. This article based protocol, studies high-speed network packet capture framework PFRING fusion national secret algorithm protocol. It designs implements algorithm. After experimental verification, system constructed this has complete functions better performance than common frameworks OpenSwan strongSwan, meet application requirements transmission.

Язык: Английский

Recent Advancements in Battery Thermal Management Systems for Enhanced Performance of Li-Ion Batteries: A Comprehensive Review DOI Creative Commons
Amin Rahmani, Mahdieh Dibaj, Mohammad Akrami

и другие.

Batteries, Год журнала: 2024, Номер 10(8), С. 265 - 265

Опубликована: Июль 26, 2024

Li-ion batteries are crucial for sustainable energy, powering electric vehicles, and supporting renewable energy storage systems solar wind power integration. Keeping these at temperatures between 285 K 310 is optimal performance. This requires efficient battery thermal management (BTMS). Many studies, both numerical experimental, have focused on improving BTMS efficiency. paper presents a comprehensive review of the latest designs developed in 2023 2024, with focus recent advancements innovations. The primary objective to evaluate new identify key improvements trends. categorizes into four cooling methods: air-cooling, liquid-cooling, phase change material (PCM)-cooling, thermoelectric cooling. It provides detailed analysis each method. also offers unique examination hybrid BTMSs, classifying them based their impact process. A hybrid-cooling refers method that combines least two types (air-cooling, PCM-cooling, thermoelectric-cooling) enhance Unlike previous reviews, this study emphasizes novelty substantial results they achieve, offering significant insights recommendations future research development BTMS. By highlighting innovations providing an in-depth analysis, serves as valuable resource researchers engineers aiming performance sustainability through advanced solutions.

Язык: Английский

Процитировано

11

A study on a battery pack in a hybrid battery thermal management system integrating with thermoelectric cooling DOI Creative Commons
Amin Rahmani, Mahdieh Dibaj, Mohammad Akrami

и другие.

Case Studies in Thermal Engineering, Год журнала: 2024, Номер 61, С. 104856 - 104856

Опубликована: Июль 23, 2024

An inherent limitation of lithium-ion batteries is their restricted use within a specific thermal working range. To address this problem, efficient battery management systems (BTMS) are required to dissipate the heat created by cells in pack. In order control maximum temperature and minimise difference through pack during 5C discharging process, study investigates phase change material (PCM)-porous system, cooled thermoelectric coolers (TEC) on its walls. calculate generation Li-ion batteries, equivalent circuit model (ECM) employed. model, made up set electric elements, including R–C pairs. Different PCM porous materials studied determine most suitable for controlling behaviour The reveals that solidus latent two crucial factors selection. A cooler an instrument uses electrical energy transfer from one side device other, depending current direction. examines TEC (thermoelectric cooler) under various ambient temperatures applied voltage differences. results demonstrate adjusting between heads 900 1500 mV, while ranges 303 K 323 K, allows achieving cold plate 288 308 K. designed BTMS tested positions, it shown when TECs used walls, back can decrease 1 better uniformity observed.

Язык: Английский

Процитировано

7

Flow and heat transfer improvement in microfluidic thermal camouflage film by topology optimization DOI
Lujia Li, Jiaqi Huang, Songjing Li

и другие.

International Communications in Heat and Mass Transfer, Год журнала: 2025, Номер 162, С. 108626 - 108626

Опубликована: Фев. 4, 2025

Язык: Английский

Процитировано

0

A Study on the Removal of Heat Generated by a Lithium-Ion Battery Module: A Fan-Assisted Battery Cooling Approach DOI Open Access
Erdi Tosun, Sinan Keiyinci, Ali Cem Yakaryılmaz

и другие.

Processes, Год журнала: 2025, Номер 13(3), С. 848 - 848

Опубликована: Март 13, 2025

Temperature is a crucial parameter for ensuring the long lifespan and safe operation of lithium-ion batteries (LiBs). An efficient battery thermal management system (BTMS) tries to maintain temperature in between optimum limits. Despite some disadvantages, air-cooled BTMSs are still preferred due their advantages such as light weight, simple design, low cost, ease maintenance. This study experimentally evaluated fan-assisted BTMS purpose cooling 4S2P module that includes 18650 type cells. The was initially tested with no observe characteristics module, followed by testing forced air using fan. Experiments were also conducted perforated plates installed fan see effects on behaviors. Tests initiated when ambient approximately 25 °C discharges carried out drawing constant currents 4 A, 8 12 16 A from via an electronic load. results this highlighted importance effective safety performance across different operational conditions. While all configurations maintained acceptable levels at lower discharge (4 A), they struggled do so higher (12 A). Among them, Fan–HC mode demonstrated highest efficiency, reducing maximum (Tmax) 38.82% 28.89% compared no-cooling scenario. Moreover, it ensured more uniform distribution within module. These findings emphasize necessity optimized strategies, particularly high-power applications.

Язык: Английский

Процитировано

0

Enhancing Battery Pack Cooling Efficiency Through Graphite-Integrated Hybrid-Battery Thermal Management Systems DOI Creative Commons
Amin Rahmani, Mahdieh Dibaj, Mohammad Akrami

и другие.

Batteries, Год журнала: 2025, Номер 11(3), С. 113 - 113

Опубликована: Март 17, 2025

This study investigates a hybrid-battery thermal management system (BTMS) integrating air-cooling, cold plate, and porous materials to optimize heat dissipation in 20-cell battery pack during charging discharging cycles of up 5C. A computational fluid dynamics (CFD) model based on the equivalent circuit (ECM) is developed simulate behavior under various cooling configurations, including different media vortex generators placed between cells. The impact configurations generation analyzed, five are tested for their performance. results reveal that, among examined materials, graphite most effective maintaining temperature within an acceptable range, particularly high C-rate charging. Graphite integration significantly reduces stabilization time from over hour approximately 600 s. Additionally, our parametric experiment evaluates influence ambient temperature, airflow velocity, cold-plate system’s efficiency. findings demonstrate that 300 K 305 minimizes gradient, ensuring uniform distribution. research highlights potential hybrid BTMS designs incorporating plates enhance performance, safety, lifespan operational conditions.

Язык: Английский

Процитировано

0

Numerical Investigation of Solar Collector Performance with Encapsulated PCM: A Transient, 3D Approach DOI Creative Commons

M.F. Faisal,

Amin Rahmani, Mohammad Akrami

и другие.

Energies, Год журнала: 2024, Номер 17(21), С. 5243 - 5243

Опубликована: Окт. 22, 2024

This study presents a comprehensive numerical investigation into the thermal performance of solar collectors integrated with encapsulated phase change materials (PCMs) using transient three-dimensional (3D) approach. The two distinct PCMs—paraffin wax and RT60—was evaluated under varying operational conditions, including seasonal variations, inlet pipe velocities, temperatures. results indicate that paraffin exhibits higher peak temperature, reaching approximately 360 K, compared to RT60’s 345 making more effective for consistent energy storage. Paraffin also maintained fluid fractions, maximum 0.9 in summer, indicating superior heat absorption retention capabilities. In contrast, RT60 demonstrated quicker transition, fully liquefying at lower fraction, which is advantageous rapid release. Seasonal variations significantly impacted system efficiency, highest efficiency observed June 365 K lowest December 340 K. found velocities (e.g., 0.25 L/s) improved retention, resulting outlet temperatures, while increasing temperature from 290 310 led marked increase temperatures throughout day. These findings underscore importance optimizing PCM selection, velocity, enhancing systems, offering quantitative insights contribute development efficient reliable renewable solutions.

Язык: Английский

Процитировано

1

Design and Implementation of IPsec VPN IoT Gateway System in National Secret Algorithm DOI Open Access
Yan Jiang, Jing Huang,

Y. Fan

и другие.

Journal of Cyber Security and Mobility, Год журнала: 2024, Номер unknown, С. 677 - 700

Опубликована: Июнь 14, 2024

With the development of Internet Things technology, security threats faced by industrial control field are increasing, and strengthening protection capabilities intelligent systems on IoT highways is becoming increasingly important. IPSec VPN tunneling technology can achieve identity authentication encrypted data transmission, an important means to secure transmission in Expressway tunnel system. The commonly used gateway uses a traditional Linux protocol stack-based approach for capture, which requires multiple copies context switching, resulting low efficiency services. In addition, implemented basis open-source framework, using internationally recognized algorithms encryption decryption, poses risks. This article based protocol, studies high-speed network packet capture framework PFRING fusion national secret algorithm protocol. It designs implements algorithm. After experimental verification, system constructed this has complete functions better performance than common frameworks OpenSwan strongSwan, meet application requirements transmission.

Язык: Английский

Процитировано

0