Article
Energy & Fuels
Amir Vasei Moghadam, Hamid Reza Goshayeshi, Issa Chaer, Alex Paurine, Saeed Zeinali Heris, Hadi Pourpasha
Summary: This study presents experimental data analysis comparing the performance of different concentrations and geometric configurations of carbon nanotubes/water nanofluids in boiling heat transfer. The results showed that a circular groove with a 45 degrees inclination and 33% higher than the base fluid on a smooth surface had the highest enhancement in heat transfer coefficient.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Thermodynamics
T. B. Nguyen, Q. Vo, X. Shang, F. Buang, T. Tran
Summary: This study introduces a novel approach of using the dielectrophoretic effect to suppress film boiling behavior and enhance heat transfer rate.
THERMAL SCIENCE AND ENGINEERING PROGRESS
(2023)
Article
Thermodynamics
Tianjiao Zhang, Liangdong Ma, Jili Zhang
Summary: This study experimentally investigated falling liquid film, pool boiling, and hybrid heat transfer with refrigerant R-134a outside a vertical tube. The results showed that the heat transfer ratio of falling film to pool boiling decreased as the heat flux increased. In the hybrid heat transfer mode analysis, it was found that at low heat flux, the heat transfer coefficients of a complete falling film were higher than those of other heat transfer modes. However, at high heat flux, a moderate increase in the submerged height of the tubes in the refrigerant improved the performance.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2022)
Article
Computer Science, Interdisciplinary Applications
S. Maity, R. Krishanan, S. K. Singh, B. S. Dandapat, D. Sen
Summary: This study investigates the flow of carbon nanotubes suspended in a nonlinear unsteady stretching thin film and examines the effects of various parameters on the film.
MATHEMATICS AND COMPUTERS IN SIMULATION
(2022)
Article
Thermodynamics
Stephen Adeoye, Yoav Peles
Summary: Flow boiling of carbon dioxide with a micro impinging jet was experimentally studied. The effects of heat flux, radial position, mass flux, and pressure on the heat transfer coefficient were investigated. Results showed an increase in the heat transfer coefficient with heat flux, mass flux, and pressure up until the critical heat flux condition. In contrast, the heat transfer coefficient declined with radial position characterized by a pronounced influence of the jet hydrodynamics.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2022)
Article
Thermodynamics
Utkarsh Deep Tiwari, Parmod Kumar
Summary: This study investigates the film boiling heat transfer phenomenon for elliptical heaters arranged in a tandem and subjected to cross-flow of saturated liquid at near critical pressure conditions. The effects of vertical spacing, aspect ratio, degree of wall superheat, and Reynolds number are studied on bubble departure dynamics and heat transfer characteristics. It is found that the bubble departure size from the bottom heater remains almost unchanged, but the departure frequency increases with higher Reynolds number and degree of superheat. The bubble size and departure frequency of the top elliptical heater vary significantly with aspect ratio, pitch, Reynolds number, and degree of superheat. The time-averaged heat transfer coefficient increases with increasing pitch distance, aspect ratio, Reynolds number, and degree of superheat, but the rate of increase diminishes at high degree of superheat.
APPLIED THERMAL ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
Lei Zhou, Wen He, Miao Wang, Xu Hou
Summary: This study presents the design of a carbon nanotube array-based phase-change heat-transfer surface that can switch its wettability between superhydrophobicity and superhydrophilicity. The surface allows independent adjustment of wettability to adapt to different heat-transfer requirements, enhancing condensation and boiling heat transfer performance.
Article
Thermodynamics
Junlong Li, Chaozhu Zhang, Qi Zhang, Ping Yang, Fujun Gan, Shuo Chen, Zhenqin Xiong, Yao Xiao, Hanyang Gu
Summary: This article presents a flow boiling heat transfer experiment conducted in a vertical rod bundle and investigates the effects of parameters on wall superheating degree and heat transfer coefficient. New correlations are proposed to predict the experimental data.
APPLIED THERMAL ENGINEERING
(2022)
Article
Physics, Applied
Yukai Lin, Fuqiang Chu, Qiang Ma, Xiaomin Wu
Summary: This study focuses on boiling regimes below the Leidenfrost point and discovers a gyroscopic rotation phenomenon of boiling droplets on various surfaces, attributed to the viscous stress from vapor/bubble flows in surface microstructures. The rougher surface structures and larger solid-liquid contact area are more likely to generate gyroscopic rotations. The theoretical model confirms the effect of substrate temperature (boiling regime) on the spinning rate of boiling droplets and further validates the proposed mechanism of gyroscopic rotation.
APPLIED PHYSICS LETTERS
(2021)
Article
Chemistry, Multidisciplinary
Youngsup Song, Carlos D. Diaz-Marin, Lenan Zhang, Hyeongyun Cha, Yajing Zhao, Evelyn N. Wang
Summary: In this work, a three-tier hierarchical structure is designed to overcome the trade-off between HTC and CHF. By defining nucleation sites with microcavities and incorporating nanostructures, the bubble coalescence is minimized and evaporation is promoted, leading to significant enhancement in both HTC and CHF compared to a smooth surface.
ADVANCED MATERIALS
(2022)
Article
Chemistry, Physical
Ben Chu, Cheng Fang, Feiyu Zheng, Weizheng Cheng, Ruitong Wang, Wanli Zhang, Jinran Tao, Lei Huai, Peng Tao, Chengyi Song, Wen Shang, Benwei Fu, Tao Deng
Summary: Graphene-based films can enhance heat transfer capacity by modifying surface structure and chemistry, but current preparation methods are complex and require additional equipment. The SBISA method developed in this study offers a simple way to generate graphene-based films, leading to significant improvements in boiling performance.
MATERIALS TODAY ENERGY
(2021)
Article
Thermodynamics
Mayowa I. Omisanya, Zhihao Chen, Yoshio Utaka
Summary: Flow boiling heat transfer was studied using a different-mode-interacting boiling (DMIB) method to enhance critical heat flux (CHF) and heat transfer coefficient (HTC). The nonuniform surfaces were found to significantly improve CHF under certain conditions, showing the potential for enhanced performance.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2022)
Article
Nanoscience & Nanotechnology
Junsheng Hou, Junjie Wu, Hongqiang Chen, Lei Huang, Li Ma, Xiong Zhao, Zihan Ding, Yonghai Zhang, Jiabin Fang, Jinjia Wei, Satoshi Watanabe, Nanjing Hao
Summary: A facile microfluidic synthesis strategy is developed to prepare highly stable and size-controllable silica nanofluids, enhancing the heat transfer efficiency and providing new insights for the rational design of two-phase cooling nano-systems.
MATERIALS TODAY NANO
(2023)
Article
Energy & Fuels
Di Xiao, Shuyi Qiu, David Hung, Xuesong Li, Keiya Nishida, Min Xu
Summary: The study investigates the wall film formation when flash boiling sprays impinge on a cold surface, revealing that flash boiling impingement deposits less film mass on the wall compared to sub-cooled sprays, but still more than impinging on room temperature plate. With decreasing wall temperature, evaporation suppression and condensation effects become increasingly significant in dominating wall film formation.
Article
Thermodynamics
Gong Chen, Xingchi Jiang, Yuanjie Li, Jingjing Bai, Syed Waqar Ali Shah, Yuan Gao, Yong Tang, Shiwei Zhang, Chin Pan
Summary: We developed a rational design of a heat sink using liquid film boiling and hybrid mesh with active liquid supply. The heat sink achieved a high critical heat flux of over 600 W/cm2 and an average heat transfer coefficient of 38 W/cm2K with a flow rate of only 0.4 ml/s on a 1 cm2 heating surface under atmospheric conditions. The design utilized a superhydrophilic porous layer and a 3-D manifold to maintain efficient liquid film boiling and decrease liquid transport distance, enabling efficient and sustainable two-phase cooling.
ENERGY CONVERSION AND MANAGEMENT
(2023)
Article
Energy & Fuels
Dre Helmns, Van P. Carey, Navin Kumar, Debjyoti Banerjee, Arun Muley, Michael Stoia
Summary: This paper summarizes experimental tests conducted on a high-performance TES unit using lithium nitrate trihydrate phase change material. Performance data for complete dual-mode cycles are presented, simulating the operation of a TES unit for asynchronous cooling in various applications. The model analysis shows reasonable agreement with experimental data, with a slight discrepancy near the initiation of freezing due to subcooling required for solidification.
JOURNAL OF ENERGY RESOURCES TECHNOLOGY-TRANSACTIONS OF THE ASME
(2021)
Article
Energy & Fuels
Navin Kumar, Ryan Von Ness, Reynaldo Chavez, Debjyoti Banerjee, Arun Muley, Michael Stoia
Summary: Salt hydrates as phase change materials have high potential in thermal energy storage, but their practical feasibility is limited due to low power rating and long-term stability issues.
JOURNAL OF ENERGY RESOURCES TECHNOLOGY-TRANSACTIONS OF THE ASME
(2021)
Article
Energy & Fuels
Vikesh Sathyamurthy, Sankar Gopalan, Sivan Suresh, Balasubramanian Karuppudayar Ramaraj, Santhosh Kumar Deenadayalan
Summary: Thermo gravimetric analysis (TGA) is widely used for estimating devolatilization rates and measuring char reactivity in coal. This study found that the most accurate method for analyzing TGA data for high-ash Indian coal is FWO.
ENERGY SOURCES PART A-RECOVERY UTILIZATION AND ENVIRONMENTAL EFFECTS
(2021)
Article
Energy & Fuels
Binjian Ma, Donghyun Shin, Debjyoti Banerjee
Summary: The study examined the feasibility of using molten salt nanofluids as TES medium based on their thermophysical properties, corrosion behavior, and economic value. The one-step synthesis protocol for nanofluids involving generation of nanoparticles in-situ from cheap additives was found to be a viable and cost-effective approach in industrial applications for enhancing energy storage capacity and power rating while extending equipment lifespan.
JOURNAL OF ENERGY STORAGE
(2021)
Article
Energy & Fuels
Aditya Chuttar, Ashok Thyagarajan, Debjyoti Banerjee
Summary: Phase change materials (PCMs) have gained attention for thermal energy storage (TES) due to their high storage density. Inorganic PCMs have a high latent heat value but face reliability issues. Cold Finger Technique (CFT) can enhance reliability by leaving a small fraction of PCM in solid phase. Machine learning (ML) techniques, specifically artificial neural networks (ANN), are used to improve the efficacy of CFT. This study demonstrates that ANN can predict the time required to achieve a chosen melt fraction of PCM.
JOURNAL OF ENERGY RESOURCES TECHNOLOGY-TRANSACTIONS OF THE ASME
(2022)
Article
Computer Science, Information Systems
Aditya Chuttar, Debjyoti Banerjee
Summary: This study investigates the real-time prediction of melt-fraction in thermal energy storage platforms using artificial neural networks. Training the ANN model with two different approaches can improve the efficiency and reliability of heat transfer systems.
Article
Thermodynamics
G. Ren, A. Chuttar, D. Banerjee
Summary: Thermal Energy Storage (TES) platforms use phase change materials (PCMs) to absorb and release thermal energy, addressing the imbalance between energy consumption and supply. Inorganic PCMs offer higher latent heat values but suffer from reliability issues due to the need for higher supercooling. The Cold Finger Technique (CFT) helps mitigate these issues at the cost of storage capacity. This study leverages machine learning techniques to predict the time required to reach a desired melt-fraction using temperature transients from PCM melting experiments.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2022)
Article
Chemistry, Multidisciplinary
Qi Yang, Ran Bi, Debjyoti Banerjee, Hadi Nasrabadi
Summary: The characterization of fluid phase transitions in nanoscale pores is important for various applications and poses challenges due to the dominance of fluid-surface interactions at this scale. Limited experimental observations have been made due to difficulties in performing experiments at the nanoscale. In this study, for the first time, the vapor-liquid phase transitions of n-butane in a 2 nm slit pore were directly observed and visualized using lab-on-a-chip technology. The experiments measured the deviation of the phase transition pressure compared to the unconfined or bulk value, and revealed significant differences between the liquid-vapor and vapor-liquid phase transition pressures.
Article
Computer Science, Artificial Intelligence
Muhammed A. Hassan, Mohamed Abubakr Hassan, Debjyoti Banerjee, Hussien Hegab
Summary: This study proposes and implements a method for predicting and optimizing the thermal conductivity and dynamic viscosity of hybrid nanofluids (HNFs). By using LSSVR models and multi-objective genetic optimization of thermal properties, excellent predictive results are achieved.
APPLIED SOFT COMPUTING
(2022)
Article
Thermodynamics
Vish Prasad, Karan Kakroo, Debjyoti Banerjee
Summary: The study reveals that the anomalous behavior of supercritical fluid extends to subcritical liquid state and shows that argon can be used as an alternative supercritical fluid for thermal transport with lower pressure and temperature requirements, as well as nonreactive and noncorrosive properties. The research also indicates that there is a significant enhancement in heat transfer at high-supercritical pressures, especially at lower temperatures.
HEAT TRANSFER RESEARCH
(2022)
Proceedings Paper
Engineering, Multidisciplinary
Alaba Bamido, Debjyoti Banerjee
Summary: The study aimed to develop a microfluidic system for precise water delivery to individual plants in the field, using thermally-actuated microvalves designed and tested. Two types of actuation, air and Phase Change Material (PCM), were utilized, with PCM design showing lower energy consumption but higher manufacturing costs, and air actuation design showing higher energy consumption but faster operation speeds.
PROCEEDINGS OF ASME 2021 FLUIDS ENGINEERING DIVISION SUMMER MEETING (FEDSM2021), VOL 3
(2021)
Proceedings Paper
Engineering, Multidisciplinary
Lamees El Nihum, Nandan Shettigar, Debjyoti Banerjee, Robert Krencik
Summary: This review focuses on advances in three-dimensional organoids, with a particular emphasis on the engineering of microfluidic device platforms for investigating neuro-organoids. The paper also assesses current limitations in microfluidic design to realize the full potential of brain-on-a-chip devices.
PROCEEDINGS OF ASME 2021 FLUIDS ENGINEERING DIVISION SUMMER MEETING (FEDSM2021), VOL 3
(2021)
Proceedings Paper
Engineering, Multidisciplinary
Nandan Shettigar, Lamees El Nihum, Ashok Thyagarajan, Debjyoti Banerjee, Robert Krencik
Summary: The study utilized soft lithography techniques to fabricate a microfluidic chip serving as a brain-on-a-chip model, where neural organoids were introduced and subjected to various stimuli to observe their electrical responses.
PROCEEDINGS OF ASME 2021 FLUIDS ENGINEERING DIVISION SUMMER MEETING (FEDSM2021), VOL 3
(2021)
Proceedings Paper
Engineering, Multidisciplinary
Ashok Thyagarajan, Debjyoti Banerjee, Vijay Dhir
Summary: This study evaluated a novel apparatus capable of dynamic flash evaporation and phase separation using centrifugal flow to form a stable air core. The experimental data obtained can be used as a preliminary indicator for separation efficiency in water remediation applications involving the production of potable water from saline water.
PROCEEDINGS OF ASME 2021 FLUIDS ENGINEERING DIVISION SUMMER MEETING (FEDSM2021), VOL 3
(2021)
Proceedings Paper
Thermodynamics
Aditya Chuttar, Nandan Shettigar, Ashok Thyagrajan, Debjyoti Banerjee
Summary: The study investigates the use of Artificial Intelligence (AI), particularly Deep Learning, to predict the time remaining to reach a target melt fraction at any instant during the melting cycle. By correlating the PCM melt fraction and temperature transients at multiple locations within the TES platform using an Artificial Neural Network (ANN), the goal of this research is to develop prediction tools that can make real-time predictions based on instantaneous values of temperature during operation.
PROCEEDINGS OF THE TWENTIETH INTERSOCIETY CONFERENCE ON THERMAL AND THERMOMECHANICAL PHENOMENA IN ELECTRONIC SYSTEMS (ITHERM 2021)
(2021)
