Article
Thermodynamics
Liuwei Wang, Ankang Kan, Wei Yu
Summary: This study investigates the melting heat transfer characteristics of phase change material in embedded fin enclosures under hypergravity using the enthalpy-porosity method. The results show that fins greatly accelerate the melting process and hypergravity enhances natural convection and heat transfer performance.
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2022)
Article
Energy & Fuels
Ahmed Saad Soliman, Shuping Zhu, Li Xu, Junguo Dong, Ping Cheng
Summary: The study found that surface structures like dimples and the addition of nanoparticles can effectively reduce the melting time of PCM, while the charging time decreases with the increase in electric input power.
JOURNAL OF ENERGY STORAGE
(2021)
Article
Construction & Building Technology
Wuyan Li, Zidong Li, Ling Xie, Yongcai Li, Tianhe Long, Sheng Huang, Jun Lu, Zhihao Wang
Summary: An experimental study was conducted to examine the thermal performance of a solar chimney integrated with a phase-change material (PCM). The study found that the inclination angle affects the airflow rate and phase change time of the chimney, while the heat flux has a small impact on the heat transfer inside the PCM. The solar chimney inclined at 45 degrees achieved the highest airflow rate.
ENERGY AND BUILDINGS
(2022)
Article
Thermodynamics
Piyush Rawat, Ahmad Faizan Ashwni, Ahmad Faizan Sherwani
Summary: This article presents a numerical analysis on enhancing the melting process of phase change material (PCM) in a rectangular enclosure using flanged fins (T-shaped). The study examines various cases based on fin length ratio (Lu/Ld) and material with no-fin PCM enclosure. Copper (Cu) fins with a low Lu/Ld ratio of 0.25 result in the highest PCM melting rate and reduced total melting time (tm) compared to the no-fin PCM enclosure. The optimization concludes that a single flanged fin placed at the lower end of the container with a flanged to web ratio (Lf/Lu, d) of 0.55 has the minimum tm and cost per mean power (Cpw).
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2023)
Article
Thermodynamics
Bingkun Huang, Shimi Yang, Enyi Hu, Xiuxiu Li, Jun Wang, Peter Lund
Summary: This paper establishes a mathematical model to explain the melting process of PCM affected by natural convection, introducing a coordination factor Co to explain the melting process. The study finds that Co is closely related to the melting rate, promoting the melting rate when Co is greater than 0. The research provides theoretical guidance for enhancing phase change heat storage.
CASE STUDIES IN THERMAL ENGINEERING
(2021)
Article
Green & Sustainable Science & Technology
A. Ghanbarpour, M. J. Hosseini, A. A. Ranjbar, M. Rahimi, R. Bahrampoury, M. Ghanbarpour
Summary: This paper presents a numerical study on heat sink thermal performance using phase change materials (PCM) and a vapor chamber for heat source cooling, finding that in natural convection, adding PCM and vapor chamber effectively reduces the heat source temperature, while in forced convection, the vapor chamber has a more significant effect and adding PCM may adversely affect heat sink performance.
Article
Thermodynamics
Piyush Rawat, Ashwni Goyal, Ahmad Faizan Sherwani
Summary: A comparative numerical study was conducted to investigate the melting of RT42 phase change material (PCM) in a rectangular enclosure using two different fin geometries: a regular fin and a flanged fin (T-shape). The results showed that the single flanged fin system had a higher melting rate and lower cost compared to the double fin system.
APPLIED THERMAL ENGINEERING
(2023)
Article
Thermodynamics
Mohammad Parsazadeh, Mehtab Malik, Xili Duan, Andre McDonald
Summary: This research investigated the melting process of a phase change material (PCM) under Neumann boundary conditions and Rayleigh-Benard convection. Numerical simulations were used to find the relationship between Nusselt number and solid-liquid interface location. The results could be used to predict heat transfer regimes during melting.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2021)
Article
Thermodynamics
Tarek Bouzennada, Farid Mechighel, Triki Ismail, Lioua Kolsi, Kaouther Ghachem
Summary: This paper presents a numerical study on the thermal behavior within a phase change material filling up a rectangular capsule with and without adding a fin, showing that the melting and storing energy rate increase with changing the capsule's inclination angle. Moreover, adding a fin can reduce the melting time and accelerate the rate of storing thermal energy, with the best choice being a horizontal fin with an inclination angle of 0 degrees.
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2021)
Article
Multidisciplinary Sciences
Pradeep S. Jakkareddy, Sudhanshu Pandey, Man Yeong Ha
Summary: The unknown boundary heat fluxes in a square enclosure containing a cylinder were estimated using an inverse technique. A physics-based neural network was constructed to reduce computational time for inverse estimation. The neural network, embedded in a genetic algorithm and Bayesian framework, accurately predicted the heat flux under low noise conditions, while the Bayesian framework outperformed the genetic algorithm with increasing measurement noise. The estimated heat fluxes were then used to investigate the thermal and flow characteristics in the enclosure.
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
(2023)
Article
Energy & Fuels
Nadezhda S. Bondareva, Mikhail A. Sheremet
Summary: This study explores the new trend of using PCM in building structures, analyzing the effects of insert position and material melting point on thermal performance of blocks, and establishing a numerical model to describe the phase transition process.
JOURNAL OF ENERGY STORAGE
(2021)
Article
Engineering, Mechanical
Nabeel S. Dhaidan
Summary: The orientation of the capsule has a small effect on the melting process, while the wall heat flux has a significant influence. In oblate capsules, the melting process is relatively faster and requires less time.
IRANIAN JOURNAL OF SCIENCE AND TECHNOLOGY-TRANSACTIONS OF MECHANICAL ENGINEERING
(2021)
Article
Thermodynamics
Kyubok Ahn, B. Kanimozhi, M. Muthtamilselvan, Qasem Al-Mdallal, Thabet Abdeljawad
Summary: The purpose of this study is to numerically describe the entropy generation caused by collective thermocapillary and buoyancy-determined convection in a perpendicular cylindrical porous cavity. The cavity is filled with MgO-Ag/water hybrid nanofluid. The effects of physical and geometrical constraints on the fluid flow, thermal behavior, entropy generation, and thermal transportation rate are analyzed. The results show that fluid friction dominates the entropy generation inside the annular enclosure, and the average entropy production is lower in the annular enclosure compared to the rectangular enclosure.
CASE STUDIES IN THERMAL ENGINEERING
(2023)
Article
Thermodynamics
Mustafa S. Mahdi, Hameed B. Mahood, Alasdair N. Campbell, Anees A. Khadom
Summary: This study found that enhancing natural convection in a rectangular latent heat energy storage unit by increasing the number of partitions can shorten PCM melting time. However, there is a limit to the improvement ratio after reaching a certain number of partitions.
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2021)
Article
Thermodynamics
Farhad Afsharpanah, Masoud Izadi, Farzam Akbarzadeh Hamedani, Seyed Soheil Mousavi Ajarostaghi, Wahiba Yaici
Summary: Latent thermal energy storage units are widely used but suffer from slow phase change. Current research focuses on using enhancement techniques, such as porous foams, fins, and nanomaterials. Experimental results show that copper foam performs best in accelerating the phase change rate of the storage unit.
CASE STUDIES IN THERMAL ENGINEERING
(2022)
Article
Thermodynamics
Ahmed Saad Soliman, Shuping Zhu, Li Xu, Junguo Dong, Ping Cheng
Summary: The main challenge in automobile air conditioning systems using absorption cycles is to efficiently utilize exhaust energy to drive the system at various engine speeds. This study proposes a novel generator design in an absorption system using an H2O-LiBr solution as the working fluid, with multiple types of phase change materials improving heat transfer capability. The results show that at low engine speeds, exhaust energy can effectively drive the system with improved COP values when using multiple types of PCM.
APPLIED THERMAL ENGINEERING
(2021)
Article
Energy & Fuels
Ahmed Saad Soliman, Shuping Zhu, Li Xu, Junguo Dong, Ping Cheng
Summary: The study found that surface structures like dimples and the addition of nanoparticles can effectively reduce the melting time of PCM, while the charging time decreases with the increase in electric input power.
JOURNAL OF ENERGY STORAGE
(2021)
Article
Thermodynamics
Ahmed Saad Soliman, Shuping Zhu, Li Xu, Junguo Dong, Ping Cheng
Summary: A numerical investigation of a novel air preheating system for diesel engines was proposed to reduce pollutants during cold start. The comprehensive thermal model studied the effects of different nanoparticle types, weight fractions, engine speed, and ambient temperature on the preheating system. It was found that the system could significantly reduce charging time and heat intake air quickly from ambient temperatures.
CASE STUDIES IN THERMAL ENGINEERING
(2021)
Article
Thermodynamics
Ahmed Saad Soliman, Ali Radwan, Li Xu, Junguo Dong, Ping Cheng
Summary: This study proposes a new design of exhaust waste heat recovery heat exchanger for preheating the intake air in cold start-up conditions, improving the performance of diesel engines. The results show that the heat exchanger can increase the intake air temperature from 273 K to 302.2 K in less than 1 minute, overcoming the difficulties of cold start-up.
CASE STUDIES IN THERMAL ENGINEERING
(2022)
Article
Thermodynamics
Ahmed Saad Soliman, Li Xu, Junguo Dong, Ping Cheng
Summary: A novel design of photovoltaic phase change materials (PV-PCMs) system is established to improve the thermal and electrical performance of solar panels. Numerical analysis and experimental testing were conducted to find the optimal design, which can enhance the operating temperature duration and electrical efficiency of the solar panel.
APPLIED THERMAL ENGINEERING
(2022)
Article
Energy & Fuels
Ahmed Saad Soliman, Li Xu, Junguo Dong, Ping Cheng
Summary: This study investigates the thermal and electrical performance of an uncooled polycrystalline concentrated photovoltaic module under different environmental conditions, revealing that the CPV system can safely operate at specific solar concentration ratios, which holds significant practical value.
Article
Green & Sustainable Science & Technology
Ahmed Saad Soliman, Li Xu, Junguo Dong, Ping Cheng
Summary: This paper presents a numerical study on the heat transfer and flow field characteristics of different types, heights, and spacings of fins in a flat plate heat exchanger. The results show that rectangular fins perform the best under specific conditions, making them suitable for waste heat recovery systems.
Article
Green & Sustainable Science & Technology
Ahmed Saad Soliman, Ahmed A. Sultan, Mohamed A. Sultan
Summary: This study experimentally and numerically investigated the melting process of paraffin wax in storage capsules of different shapes. The results showed that the shape of the storage capsule and the value of A(mush) greatly influence the melting process of the PCM.
Article
Energy & Fuels
M. Ahmadifar, K. Benfriha, M. Shirinbayan, A. Aoussat, J. Fitoussi
Summary: This study investigates the impact of innovative polymer-metal interface treatment on the reliability and robustness of hydrogen storage technology. A scaled-down demonstrator was fabricated using rotomolding to examine the mechanical characteristics, damage, and fatigue behaviors of the metal-polymer interface. The findings reveal that sandblasting treatment enhances the resilience of the interface.
JOURNAL OF ENERGY STORAGE
(2024)
Article
Energy & Fuels
A. A. Kandil, Mohamed M. Awad, Gamal I. Sultan, Mohamed S. Salem
Summary: This paper proposes a novel hybrid system that splits solar radiation into visible and thermal components using a beam splitter and integrates a phase change material (PCM) packed bed with a PV cell. Experimental and theoretical analyses show that the hybrid configuration significantly increases the net power output of the system compared to using a PV system alone.
JOURNAL OF ENERGY STORAGE
(2024)
Article
Energy & Fuels
Jinchao Li, Ya Xiao, Shiqiang Lu
Summary: The combination of energy storage and microgrids is crucial in addressing the uncertainty of distributed wind and solar resources. This article proposes a multi microgrid interaction system with electric-hydrogen hybrid energy storage, which optimizes the system's capacity configuration to improve its economy and reliability.
JOURNAL OF ENERGY STORAGE
(2024)
Review
Energy & Fuels
Shri Hari S. Pai, Sarvesh Kumar Pandey, E. James Jebaseelan Samuel, Jin Uk Jang, Arpan Kumar Nayak, HyukSu Han
Summary: This review discusses the structure-property relationship of nickel oxide nanostructures as excellent supercapacitive materials and provides an overview of various preparation methods and strategies to enhance specific capacitance. It comprehensively analyzes the current status, challenges, and future prospects of nickel oxide electrode materials for energy storage devices.
JOURNAL OF ENERGY STORAGE
(2024)
Article
Energy & Fuels
Xiaowei Wu, Xin Dong, Ziqin Liu, Xinyi Wang, Pu Hu, Chaoqun Shang
Summary: The growth of Li dendrites in lithium metal batteries is effectively controlled by constructing a three-dimensional framework on the surface of Li using Ni(OH)2 nanosheets modified Prussian blue tubes. This method provides a homogenous Li+ flux and sufficient space to accommodate the volume change of Li, resulting in suppressed dendrite growth and improved cycling performance.
JOURNAL OF ENERGY STORAGE
(2024)
Article
Energy & Fuels
Yan-Jie Liao, Yi-Yen Hsieh, Yi-Chun Yang, Hsing-Yu Tuan
Summary: We present two-dimensional AgInP2Se6 (AIPSe) bimetallic phosphorus trichalcogenides nanosheets as anodes for advanced alkali metal ion batteries (AMIBs). The introduction of bimetallic components enhances the electronic/ionic conductivity and optimizes the redox dynamics, resulting in superior electrochemical performance. The AIPSe@G anodes achieve high specific capacity, excellent cycle stability, and rate capability in both lithium-ion (LIBs) and potassium-ion batteries (PIBs). The comprehensive full cell tests further demonstrate the stability of AIPSe@G anodes under diverse current regimes.
JOURNAL OF ENERGY STORAGE
(2024)
Article
Energy & Fuels
Chenghu Wu, Weiwei Li, Tong Qian, Xuehua Xie, Jian Wang, Wenhu Tang, Xianfu Gong
Summary: In the context of increasing global environmental pollution and constant increase of carbon emission, hydrogen production from surplus renewable energy and hydrogen transportation using existing natural gas pipelines are effective means to mitigate renewable energy fluctuation, build a decarbonized gas network, and achieve the goal of carbon peak and carbon neutral in China. This paper proposes a quasi-steady-state modeling method of a hydrogen blended integrated electricity-gas system (HBIEGS) considering gas linepack and a sequential second-order cone programming (S-SOCP) method to solve the developed model. The results show that the proposed method improves computational efficiency by 91% compared with a general nonlinear solver.
JOURNAL OF ENERGY STORAGE
(2024)
Article
Energy & Fuels
Jingcen Zhang, Zhi Guo, Yazheng Zhu, Haifeng Zhang, Mengjie Yan, Dong Liu, Junjie Hao
Summary: In this study, a new type of sensible heat storage material was prepared using low-cost steel slag as the main component, providing an effective way of recycling steel slag. By analyzing the effects of different pretreatment steel slag content and sintering temperatures on the organization and properties of heat storage materials, the study found that the steel slag heat storage material exhibited excellent performance and stability under certain conditions.
JOURNAL OF ENERGY STORAGE
(2024)
Article
Energy & Fuels
D. Carrillo-Pena, G. Pelaz, R. Mateos, A. Escapa
Summary: Methanogenic biocathodes have the potential to convert CO2 and electricity into methane, making them suitable for long-term electrical energy storage. They can also function as biological supercapacitors for short-term energy storage, although this aspect has received less attention. In this study, carbon-felt-based MB modified with graphene oxide were investigated for their electrical charge storage capabilities. Results showed that the potential of the electrode during discharging plays a significant role in determining the charge storage capacity.
JOURNAL OF ENERGY STORAGE
(2024)
Article
Energy & Fuels
Marco Gambini, Federica Guarnaccia, Michele Manno, Michela Vellini
Summary: This paper presents an analytical assessment of the energy-power relationship for different material-based hydrogen storage systems. It explores the impact of power demand on the amount of discharged hydrogen and the utilization factor. The results show that metal hydrides have higher specific power compared to liquid organic hydrogen carriers. The study provides insights into the discharge duration and energy utilization of hydrogen storage systems.
JOURNAL OF ENERGY STORAGE
(2024)
Article
Energy & Fuels
Shujahadeen B. Aziz, Rebar T. Abdulwahid, Pshko A. Mohammed, Srood O. Rashid, Ari A. Abdalrahman, Wrya O. Karim, Bandar A. Al-Asbahi, Abdullah A. A. Ahmed, M. F. Z. Kadir
Summary: This study investigates a novel biodegradable green polymer electrolyte for energy storage. Results show that the sample with added glycerol has the highest conductivity. The primary conduction species in the electrolyte are ions. Testing confirms that the sample can withstand a voltage suitable for practical applications.
JOURNAL OF ENERGY STORAGE
(2024)
Article
Energy & Fuels
Binit Kumar, Abhishek Awasthi, C. Suresh, Yongseok Jeon
Summary: This study presents a new numerical model for effective thermal conductivity that overcomes the limitations of previous models. The model can be applied to various shapes and phase change materials, using the same constants. By incorporating the natural convection effect, the model accurately calculates the thermal conductivity. The results of the study demonstrate the effectiveness of the model for different shapes and a wide range of alkanes.
JOURNAL OF ENERGY STORAGE
(2024)
Article
Energy & Fuels
Supak Pattaweepaiboon, Wisit Hirunpinyopas, Pawin Iamprasertkun, Katechanok Pimphor, Supacharee Roddecha, Dirayanti Dirayanti, Adisak Boonchun, Weekit Sirisaksoontorn
Summary: In this study, electrode powder from spent zinc-carbon/alkaline batteries was upcycled into LiMn2O4 cathode and carbon anode for rechargeable lithium-ion batteries. The results show that the upcycled LiMn2O4 exhibits improved electrochemical performance, with higher discharge capacity compared to pristine LiMn2O4. Additionally, the recovered carbon materials show superior cycling performance. This research provides great potential for upcycling waste battery electrodes to high-value cathode and anode materials for lithium-ion battery applications.
JOURNAL OF ENERGY STORAGE
(2024)
Article
Energy & Fuels
Pan Yang, H. D. Yang, X. B. Meng, C. R. Song, T. L. He, J. Y. Cai, Y. Y. Xie, K. K. Xu
Summary: This paper introduces a novel multi-task learning data-driven model called GBLS Booster for accurately assessing the state of health (SOH) and remaining useful life (RUL) of lithium batteries. The model combines the strengths of GBLS and the CNN-Transformers algorithm-based Booster, and the Tree-structured Parzen Estimator (TPE) algorithm is used for optimization. The study devises 10 healthy indicators (HIs) derived from readily available sensor data to capture variations in battery SOH. The random forest method (RF) is employed for feature refinement and data dimension reduction, while the complete empirical mode decomposition (CEEMDAN) method and the Pearson correlation coefficient are used for noise reduction and data point elimination in RUL prediction. The proposed model demonstrates exceptional accuracy, robustness, and generalization capabilities.
JOURNAL OF ENERGY STORAGE
(2024)
Article
Energy & Fuels
M. Arrinda, M. Oyarbide, L. Lizaso, U. Osa, H. Macicior, H. J. Grande
Summary: This paper proposes a robust aging model generation methodology for lithium-ion batteries with any kind of lab-level aging data availability. The methodology involves four phases and ensures the robustness of the aging model through a verification process.
JOURNAL OF ENERGY STORAGE
(2024)