Article
Thermodynamics
Giulia Righetti, Claudio Zilio, Luca Doretti, Giovanni A. Longo, Simone Mancin
Summary: The thermal conductivity of Phase Change Materials has a significant impact on the performance of passive electronic thermal management systems, with the effectiveness of enhanced heat transfer surfaces depending on operating conditions. It is important to consider the properties of the Phase Change Material, system requirements, and real operating conditions when designing such systems.
APPLIED THERMAL ENGINEERING
(2021)
Article
Thermodynamics
Mengshuai Zhu, Zilong Wang, Hua Zhang, Xiangxin Sun, Binlin Dou, Weidong Wu, Guanhua Zhang, Long Jiang
Summary: Phase-change materials (PCMs) have the potential to overcome the low energy density and utilization efficiency of solar energy. This study successfully improved the thermal conductivity of PCMs by adding high-pore-density copper metal foam (CMF) to paraffin wax. Experimental results showed that increasing the proportion of CMF can enhance heat transfer during the PCM melting process and improve the comprehensive heat transfer coefficient. When considering both heat storage capacity and heat storage rate, PCMs with a 0.86% CMF proportion exhibited the best heat storage performance.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2022)
Article
Thermodynamics
Julian Weimer, Nicolas Weimer, Jeremy Nuzzo, Ingmar Kallfass
Summary: A transient thermal management system is proposed to enhance the power density of mobile battery charger by dynamically adjusting converter output power. Experimental results show a 40% increase in effective power density when charging a conventional 50 Wh laptop battery, all within the same thermal boundaries as common operation at constant output power, with a power density measurement accuracy of 5.2%.
APPLIED THERMAL ENGINEERING
(2023)
Article
Engineering, Aerospace
Inaki Garmendia, Haritz Vallejo, Miguel Seco, Eva Anglada
Summary: This paper presents the design and validation of a heat storage device based on phase change materials for improving thermal control of micro-satellites. Challenges in thermal conductivity are addressed through the use of aluminum fins, with numerical simulations demonstrating feasibility. Experimental results confirm the effectiveness of the technique for integrated thermal management.
Article
Engineering, Environmental
Cheng Dong, Ang Li, Chen Wang, Jiao Li, Hongyi Gao, Xiao Chen, Yuean Wang, Lei Li, Yu Zheng, Ge Wang
Summary: A hierarchical zeolitic imidazolate frameworks (ZIF) based phase change material, PEG/CC@ZIF, was proposed to enhance the thermal performance by regulating attractive interaction, reducing heat loss, and increasing energy storage capacity.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Multidisciplinary Sciences
Nacer Badi, Saleh A. Alghamdi, Hazem M. El-Hageen, Hani Albalawi
Summary: This paper investigates the use of a phase change material (PCM-OM37P) to maintain panel temperatures close to ambient, improving the efficiency of solar panels. It demonstrates the enhancement of the GCL-P6/60265W solar panel efficiency at the University of Tabuk Renewable Energy and Energy Efficiency Center (REEEC).
Article
Energy & Fuels
Thanongsak Nochaiya, Apiyada Sangnak, Attakorn Thongtha, Watcharapong Wongkeo, Pincha Torkittikul
Summary: The study investigates the use of waste materials and phase change materials to improve energy efficiency and environment of buildings. Results show that adding HSA in mortar decreases compressive strength and density, but decreases thermal conductivity. Additionally, HSA mortars exhibit a significant increase in time lags with higher HSA content.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Materials Science, Ceramics
Yi Wang, Haining Ji, Yongxing Chen, Bin Liu, Jiamei Huang, Mingying Lu, Yangyong Ou, Yong Zhao, Jundong Tao, Yan Huang, Junlong Wang
Summary: Controlling the cooling effect in radiative cooling is a major challenge. This paper proposes a novel radiative cooling device that addresses this challenge by adjusting materials and stress to achieve different cooling modes. The device demonstrates excellent energy-saving capabilities in high-temperature environments and prevents excessive cooling in low-temperature environments.
CERAMICS INTERNATIONAL
(2023)
Article
Thermodynamics
Marwan Al-Rjoub, Michael J. Kazmierczak, Amit Bhattacharya, Sathyaprabha Rakkimuthu, Sruthi Ramadurai, Joshua P. Stuckey, Rupak K. Banerjee
Summary: This study introduces a novel active head cooling system that utilizes phase change material for thermal storage and can be designed for portability. The system is capable of handling high heat generation from the head and the cooling duration can be adjusted based on heat load and flow rate.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2021)
Article
Engineering, Environmental
Ruze Liu, Ang Li, Jinyan Liu, Wengeng Liu, Hao Zheng, Xiao Chen, Cheng Dong
Summary: This study introduces a novel carbon-based hierarchical porous structure for encapsulating phase change materials. The unique structure efficiently captures photons, increases the optical paths, promotes nucleation, and reduces the activation energy, resulting in efficient heat storage and high photo- and electro-thermal storage efficiencies.
CHEMICAL ENGINEERING JOURNAL
(2023)
Review
Chemistry, Physical
Weisan Hua, Liyu Zhang, Xuelai Zhang
Summary: This paper reviews the theoretical basis and application progress of phase change materials (PCMs) in chip thermal management, including different types of PCMs, non-embedded cooling solutions, and research methods of embedded cooling.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Construction & Building Technology
Rosicky Methode Kalombe, Sarvenaz Sobhansarbandi, John Kevern
Summary: This study explores the use of low-cost thermal energy storage aggregates (TESA) as an alternative to deicing salts for improving winter safety. Different organic phase change materials (PCMs) were used to create TESA, which effectively stored heat and delayed freezing. The combination of paraffin wax and soybean oil showed the most significant heat storage increase. TESA concrete presents a sustainable and feasible option for reducing the use of deicing salts and minimizing environmental and safety impacts in winter maintenance.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Green & Sustainable Science & Technology
Yang Ding, Hang Wang, Bohou Huang, Yige Hu, Feng Jiang, Xiang Ling
Summary: This study investigated a 20-feet latent cold energy storage device integrated with a novel fin-plate unit to improve heat transfer rate of phase change materials. The results showed that a branch fin with the same volume as a straight fin can significantly reduce the charging time. The device demonstrated high energy storage efficiency and long output time under certain operating parameters.
Article
Construction & Building Technology
Meng Jia, Aimin Sha, Wei Jiang, Xinzhou Li, Wenxiu Jiao
Summary: Functional pavement materials, particularly phase change heat storage asphalt mixtures, are a focus of research. This study successfully developed a polyurethane-based solid-solid phase change material with suitable phase change temperatures and excellent cycling stability. By replacing limestone filler with this phase change material, the researchers were able to improve high-temperature stability and low-temperature cracking resistance in the asphalt mixtures, although water stability was weakened. These phase change mixtures showed promise in meeting pavement performance requirements.
ENERGY AND BUILDINGS
(2023)
Article
Green & Sustainable Science & Technology
Sheng Zhang, Pawel Oclon, Jiri Jaromir Klemes, Piotr Michorczyk, Kinga Pielichowska, Krzysztof Pielichowski
Summary: This paper introduces the recent developments in Renewable Energy Systems for building heating, cooling and electricity production with thermal energy storage. The buildings contribute about 40% of total energy consumption, with significant potential for primary energy savings. The application of various Renewable Energy based systems is discussed including: the presentation of Hybrid Renewable Energy bases systems, methodology for their design and methods for the optimisation of Buildings RES.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2022)
Article
Computer Science, Interdisciplinary Applications
F. L. Tan, S. C. Fok
COMPUTER APPLICATIONS IN ENGINEERING EDUCATION
(2010)
Article
Physics, Atomic, Molecular & Chemical
Ghada Bassioni, Avin E. Pillay, Mirella El Kadi, Fadi Fegali, Sai Cheong Fok, Sasi Stephen
EUROPEAN JOURNAL OF MASS SPECTROMETRY
(2010)
Article
Energy & Fuels
A. E. Pillay, M. Elkadi, S. C. Fok, S. Stephen, J. Manuel, M. Z. Khan, S. Unnithan
Article
Thermodynamics
F. L. Tan, S. C. Fok
HEAT TRANSFER ENGINEERING
(2012)
Article
Thermodynamics
G. Setoh, F. L. Tan, S. C. Fok
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2010)
Article
Materials Science, Characterization & Testing
F. L. Tan, S. C. Fok
JOURNAL OF TESTING AND EVALUATION
(2013)
Article
Thermodynamics
Sai Cheong Fok, Fock Lai Tan, Chong Chai Sua
Article
Mathematical & Computational Biology
S. C. Fok, S. Y. E. Lim, G. Y. C. Chan
JOURNAL OF MEDICAL IMAGING AND HEALTH INFORMATICS
(2011)
Article
Computer Science, Interdisciplinary Applications
Aigerim K. Rakhimzhanova, Colin Thornton, Nguyen Hop Minh, Sai Cheong Fok, Yong Zhao
COMPUTERS AND GEOTECHNICS
(2019)
Proceedings Paper
Engineering, Aerospace
Dastan Igali, Olzhas Mukhmetov, Yong Zhao, Sai Cheong Fok, Soo Lee Teh
2018 2ND INTERNATIONAL CONFERENCE ON ADVANCED TECHNOLOGIES IN DESIGN, MECHANICAL AND AERONAUTICAL ENGINEERING (ATDMAE 2018)
(2018)
Proceedings Paper
Engineering, Biomedical
Olzhas Mukhmetov, Dastan Igali, Yong Zhao, Sai Cheong Fok, Soo Lee Teh, Aigerim Mashekova, Ng Yin Kwee
PROCEEDINGS 2018 IEEE 18TH INTERNATIONAL CONFERENCE ON BIOINFORMATICS AND BIOENGINEERING (BIBE)
(2018)
Proceedings Paper
Automation & Control Systems
S. C. Fok, F. L. Tan
INDUSTRIAL INSTRUMENTATION AND CONTROL SYSTEMS II, PTS 1-3
(2013)
Proceedings Paper
Engineering, Manufacturing
S. C. Fok, F. L. Tan
MATERIAL DESIGN, PROCESSING AND APPLICATIONS, PARTS 1-4
(2013)
Proceedings Paper
Instruments & Instrumentation
S. Parasuraman, Chiew Mun Hou, Sai Cheong Fok
2011 IEEE INTERNATIONAL INSTRUMENTATION AND MEASUREMENT TECHNOLOGY CONFERENCE (I2MTC)
(2011)
Article
Thermodynamics
Yunxia Ma, Fei Liu, Honggang Pan, Hongjian Zhang, Shuxia Yan, Ailing Zhang
Summary: This paper proposes a dynamically tunable and switchable perfect infrared absorber that exhibits excellent electrical regulation performance and high absorptance. The absorption mechanism is explained using a multiple interference model, and it is proven to be polarization insensitive.
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2024)
Article
Thermodynamics
F. J. dos Santos, G. S. M. Martins, M. Strobel, L. Beckedorff, K. V. de Paiva, J. L. G. Oliveira
Summary: This study investigates the effects of inlet conditions and plate's features on the thermal-flow performance of a gasket plate heat exchanger (GPHE) and assesses the impact of a modified tightening distance on its performance. No systematic study on the combined effects of inlet conditions and assembly accuracy on GPHE performance has been conducted before.
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2024)
Article
Thermodynamics
Alok K. Ray, Dibakar Rakshit, K. Ravi Kumar, Hal Gurgenci
Summary: The low thermal conductivity of phase change materials limits the heat transfer rate and application of latent heat storage systems. This numerical study examines the impact of two passive heat transfer enhancement techniques on the thermal performance of a latent heat storage system. The results show that the orientation and position of the heat transfer fluid tube have significant effects on the charging duration, while the discharging duration remains unchanged. The combined effect of orientation and eccentricity reduces the charging duration, but increases the discharging duration compared to the concentric domain.
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2024)
Article
Thermodynamics
Yalu Han, Yanlong Wang, Chenyang Liu, Xinmin Hu, Yin An, Zhengcai Li, Jiaxun Jiang, Lizhi Du
Summary: This paper investigates the calculation method of thermal conductivity in NAPLs-contaminated soils. By establishing NAPLs-contaminated soil models and using the Lattice Boltzmann Method (LBM) for calculation, an optimized three-dimensional model with high computational accuracy and efficiency is obtained. The study also finds that saturation and Nz parameters have a significant impact on calculation time, while the thermal conductivity of the two-dimensional model is more sensitive to anisotropy. The influence of porosity and NAPLs content on thermal conductivity should be considered during in-situ thermal desorption.
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2024)
Article
Thermodynamics
Mostafa Taha, Song Zhao, Aymeric Lamorlette, Jean-Louis Consalvi, Pierre Boivin
Summary: For the first time, large-eddy simulations (LES) of the near-field region of large-scale fire plumes were performed using a pressure-based Lattice Boltzmann method (LBM) with low-Mach number approximation. The simulations showed quantitative agreement with experimental data and were consistent with previously-published numerical studies. The study demonstrated the computational efficiency of the proposed LBM solver in tackling fire-induced flows, suggesting LBMs as a good alternative candidate for modeling fire-related problems.
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2024)
Article
Thermodynamics
Weixin Zhang, Yehang Xie, Yuqiang Ding, Zhao Liu, Zhenping Feng
Summary: This study investigated the impact of upstream slot leakage on the endwall film cooling characteristics of turbine blades. Pressure Sensitive Paint (PSP) technology was used to measure the film cooling characteristics, and numerical analysis was conducted to evaluate the aerodynamic performance. It was found that increasing the mass flow ratio of the upstream slot enhanced film cooling, decreased aerodynamic losses, and reduced the strength of passage vortex. However, reducing the distance between the slot and the blade leading edge only enhanced film cooling without affecting the leakage coverage area.
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2024)
Article
Thermodynamics
Rui Zhang, Zhen-lei Li, Yan-sheng Zhang, Dong Chen, Guo Yuan
Summary: This study discusses the heat transfer behavior of different jet forms on steel tubes. The results show that the annular jet performs better in terms of cooling intensity and uniformity. The cooling performances of the two jet forms are similar when the steel tube size is small. Therefore, the planar jet can be considered for smaller diameters due to its simplicity, low cost, and convenience in application.
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2024)
Article
Thermodynamics
A. R. Khoei, A. M. Orvati Movaffagh, A. Rezaei Sameti
Summary: This paper presents a comprehensive study on the thermo-mechanical characteristics of oxide-coated aluminum nano-powder. It is found that the thermal conductivity of oxide-coated aluminum nano-powder is significantly lower than that of the bulk aluminum, and it is affected by the density and temperature.
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2024)
Article
Thermodynamics
Yanjin Wang, Jintao Xiong, Lingyu Chen, Zhihai Lv, Qian Wang
Summary: A solar radiation transfer model for spray cooling double skin facade (SC-DSF) is proposed in this study. The model is validated by experimental results and various influence factors are analyzed. The effectiveness of adjusting droplet coverage rate and size is also evaluated.
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2024)
Article
Thermodynamics
Bostjan Zajec, Blaz Mikuz, Anil Kumar Basavaraj, Marko Matkovic, Matej Tekavcic, Martin Draksler, Leon Cizelj, Bostjan Koncar
Summary: We have developed an advanced experimental setup to investigate flow and heat transfer in an annular channel. The setup allows heat transfer measurements and flow visualization using a temperature-controlled inner tube. Measurements can be conducted in both single-phase and two-phase flow regimes. The setup ensures a uniform velocity field in the annular channel using specially designed inlet and outlet headers. The inner copper tube is heated by water and contains turbulators for enhanced heat transfer and thermocouples for temperature measurement. A three-dimensional conjugate heat transfer CFD model has been developed and validated to accurately estimate heat losses in the setup. This study demonstrates the importance of numerical simulations in improving the interpretation of complex experimental results.
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2024)
Article
Thermodynamics
Weijie Chen, Ke Wang, Yongqing Wang, Shantung Tu, Zunchao Liu, Huijuan Su
Summary: In this study, a novel gradient porosity transpiration cooling plate structure (GP-TCPS) is proposed to alleviate heat transfer deterioration caused by non-uniform temperature distribution in transpiration cooling plate structure (TCPS). Computational fluid dynamics (CFD) and response surface method (RSM) were used for qualitative and quantitative analysis of the flow and heat transfer of GP-TCPS. The optimized structure of GP-TCPS significantly improves temperature uniformity, injection pressure, and average cooling efficiency compared to traditional TCPS.
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2024)
Article
Thermodynamics
R. Essam, A. Elsaid, W. K. Zahra
Summary: This study presents a novel bioheat model for simulating heat transfer in skin tissue. The model offers an improved representation of thermal dynamics in the skin and has been validated using numerical solutions and experimental measurements. The study highlights the importance of incorporating vascular inlet parameters and thermal relaxation effects in the thermal profile, and suggests potential applications in thermal therapy and wound healing.
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2024)
Article
Thermodynamics
Dongbo Shi, Tao Xu, Zifeng Chen, Di Zhang, Yonghui Xie
Summary: The cooling structure design of turbine blades is crucial for the safety and reliability of the gas turbine set. This research investigates different arrangement schemes, including dimple/protrusion arrangements, to enhance the cooling performance. The results show that the arrangement scheme with both passes arranged by dimples has the best comprehensive thermal performance.
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2024)
Article
Thermodynamics
Emrehan Guersoy, Hayati Kadir Pazarlioglu, Mehmet Guerdal, Engin Gedik, Kamil Arslan
Summary: The thermo-hydraulic performance of Al2O3/H2O nanofluid with different nanoparticle shapes flowing in a sudden expansion tube with variable sudden expansion inclination angles and elliptical dimpled fins with different diameters were numerically investigated. The results showed that the nanoparticle shapes, sudden expansion inclination angles, and elliptical dimpled fin have significant impact on the thermo-hydraulic performance. This study reveals the novelty and importance of these factors in the research.
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2024)
Article
Thermodynamics
Rukun Hu, Xinyu Huang, Xinyu Gao, Liu Lu, Xiaohu Yang, Bengt Sund
Summary: This study examines the impact of applying bottom cross-cut on PCM's spatial distribution in a horizontal LHTES unit using numerical simulation. The findings show that bottom cross-cut can improve the heat storage rate and natural convection heat transfer gain.
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2024)