Article
Energy & Fuels
Shuai Liu, Yan Liu, Huichao Gu, Ruofei Tian, Haizhen Huang, Tianming Yu
Summary: This study constructs a nanofluid-based experimental system for power battery liquid cooling and investigates the cooling performance of different nanofluid concentrations and inlet flow rates at different discharge rates and discharge times. The results show that the cooling performance of nanofluids is obvious at low discharge rates and low flow rates, but deteriorates severely at high flow rates. High discharge rates and high temperatures have limited improvement on the cooling performance of nanofluids. The optimal working conditions are determined as 1C discharge for 60 minutes, 0.9 L/min flow rate, and 0.1%, 1%, and 2% of γ-Al2O3/heat transfer fluid nanofluid, which can reduce the battery module temperature and improve cooling performance. This work provides guidance for the practical application of nanofluids in battery thermal management systems.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Engineering, Mechanical
Deep Chatterjee, Nirmalendu Biswas, Nirmal K. Manna, Sandip Sarkar
Summary: This study aims to understand the impact of the position of discrete heaters and coolers on a cylindrical thermal system. By altering the positions and controlling parameters, the heat transfer and entropy production are systematically investigated. The study reveals that the cross-wise heating-cooling arrangement is the most effective option for enhanced heat transfer.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2023)
Article
Construction & Building Technology
Pei Peng, Chen Zhang, Wenqiang Li, Michal Pomianowski, Guangcai Gong, Xi Fang, Liang Chun, Rui Guo
Summary: This study systematically investigates the application of diffuse ceiling ventilation (DCV) in indoor airflow and contaminant dispersion for space heating and cooling. The results show that DCV provides a satisfying thermal environment in both heating and cooling modes, and there is no reverse flow from the room to the plenum. The study also reveals that DCV performs better for space cooling and the exhaust positions have a greater influence on the system than the air change rates.
JOURNAL OF BUILDING ENGINEERING
(2023)
Article
Materials Science, Multidisciplinary
Sheng Qiu, Hao Jia, Shou-xiang Jiang
Summary: A dual-mode Janus fabric with photothermal conversion and solar heat shielding abilities for personal thermal management is fabricated in this study. The fabric can reflect nearly 90% of solar rays in the cooling mode and absorb about 70% of solar irradiance in the heating mode. This novel fabric offers new possibilities for applications in the textile industry for personal thermal management.
Article
Thermodynamics
Sara Rostam, Rasool Kalbasi, Mohsen Talebkeikhah, Aysan Shahsavar Goldanlou
Summary: This research investigated the thermal conductivity of a hybrid nanofluid containing MWCNTs and TiO2, showing that loading nanoparticles can enhance the sensitivity of thermal conductivity to temperature, with the positive effects amplified as temperature rises. Statistical analysis and machine learning algorithms were used for prediction and comparison.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2021)
Article
Green & Sustainable Science & Technology
Yan Su, Pengxiang Sui, Jane H. Davidson
Summary: In this study, the nanofluid cooling of a concentrated photovoltaic thermal receiver was simulated using a sub-continuous lattice Boltzmann model, and it was found that the effective thermal conductivity and effective viscosity were nonlinearly related to the nanoparticle concentration and size. The cooling efficiencies of Al2O3-water nanofluid were compared with those of pure water under different solar irradiance, and the flow and temperature fields were simulated for nanofluids with various parameters. The maximum enhancement ratio of 1.14 was achieved, providing a practical tool for optimizing nanofluid cooling in CPVT solar receivers.
Article
Chemistry, Multidisciplinary
Likhan Das, Khairul Habib, Kashif Irshad, Rahman Saidur, Salem Algarni, Talal Alqahtani
Summary: The current research focuses on formulating a new class of Therminol55-based nanofluids that incorporate an MXene/Al2O3 nanocomposite as a dispersant. The optical and thermophysical properties of the nanofluids are experimentally assessed, and the surface charge and chemical stability of the composite particles are evaluated. The results show that the formulated nanofluid has high thermal conductivity and low viscosity, making it suitable for use as a heat transfer fluid.
Article
Thermodynamics
Oussama Rejeb, Samson Shittu, Guiqiang Li, Chaouki Ghenai, Xudong Zhao, Christophe Menezo, Abdelmajid Jemni, Mohamed Hedi Jomaa, Maamar Bettayeb
Summary: The study compared the performance of a traditional CPVT solar system with and without the addition of thermoelectric generator modules (TEG) using numerical simulations. The results showed that the CPVT system integrated with TEG showed improvements in electrical power generation during both summer and winter days, while reducing the thermal power output. Overall, integrating thermoelectric generator modules into the CPVT system showed better energy utilization in terms of both electricity and heat.
ENERGY CONVERSION AND MANAGEMENT
(2021)
Article
Chemistry, Multidisciplinary
Yichao Liu, Kun Chao, Fei Sun, Shaojie Chen, Hongtao Dai, Hanchuan Chen
Summary: Remote temperature control can be achieved by a long-focus thermal lens and a virtual thermal source/sink using active thermal metasurfaces. This study proposes a general approach to realize materials with negative thermal conductivity using active thermal metasurfaces. By using transformation thermodynamics, a novel long-focus thermal lens is designed and experimentally verified, expanding the scope of thermal conductivity and enabling new thermal effects with negative thermal conductivity.
ADVANCED MATERIALS
(2023)
Article
Energy & Fuels
Mohanan Vasanthakumari Bindu, Gnana Muthu Joselin Herbert
Summary: By adjusting the volume concentration of nanoparticles, a ternary nanofluid composed of Al2O3, ZnO, and multiwall carbon nanotubes demonstrates significant improvements in thermal conductivity and viscosity, making it suitable for medium-temperature heat transfer applications.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Energy & Fuels
Nur Syahirah M. Hanafi, Wan Aizon W. Ghopa, Rozli Zulkifli, Mohd Anas Mohd Sabri, Wan Fathul Hakim W. Zamri, Meor Iqram Meor Ahmad
Summary: Liquid coolant is commonly used to lower the temperature of an object. By introducing metal nanoparticles into a base fluid such as water, the heat transfer performance of the coolant can be increased. Hybrid nanofluids, which mix two types of metal nanoparticles with high thermal conductivity, have been developed to further enhance the heat transfer performance. In this study, a numerical analysis was conducted to investigate the effects of different types of coolants on heat transfer performance. The results showed that hybrid nanofluids had the highest heat transfer performance compared to pure water and single particle nanofluids. A mathematical formulation was also developed to describe the correlation between Reynolds number and volume concentration on the average heat transfer coefficient.
Article
Chemistry, Physical
Bingying Gao, Jinyao Cao, Chao Yao, Linqiang Mao
Summary: In this study, Cr2O3 - Al2O3 aerogels (CrAAs) were successfully fabricated through a simple method and ambient pressure drying process. The prepared CrAAs showed low density, high thermal conductivity, good flame retardancy, and rapid cooling performance.
APPLIED SURFACE SCIENCE
(2022)
Article
Thermodynamics
Federico Scarpa, Vincenzo Bianco
Summary: This study examines the use of Al2O3-water nanofluid as the heat transfer fluid in a magnetic regenerator and evaluates its improved cooling capabilities. The results show that with the addition of Al2O3 nanoparticles, the cooling capacity increased by more than 15%, and the COP can be maintained or increased by tuning the cycle time and the utilization factor of the regenerator.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
A. Siricharoenpanich, S. Wiriyasart, P. Naphon
Summary: The study showed that nanoparticles suspended in the base fluid significantly impact the physical properties and flow features of the nanofluid, leading to higher heat removal capacity and lower thermal resistance. Heat sink with lower flow channels demonstrated lower thermal resistance compared to those with higher flow channels. The findings can be used to develop a knowledge base for designing thermal cooling systems for GPUs and other electronic components.
CASE STUDIES IN THERMAL ENGINEERING
(2021)
Article
Chemistry, Physical
M. A. Al-Muzaiqer, N. A. Ivanova, V. M. Fliagin, P. Lebedev-Stepanov
Summary: This study proposes a method for manipulating microparticles in volatile liquid layers by controlling Marangoni flows through changing the temperature gradient sign. The method is applicable for particles with various physicochemical properties and shapes, and is simple, flexible, and can be used to manipulate single microparticles or large groups of particles.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
