Article
Thermodynamics
K. Venkata Ramana, K. Gangadhar, T. Kannan, Ali J. Chamkha
Summary: This study analyzed the hydromagnetic transverse flow of an Oldroyd-B-type liquid with variable thickness using the Cattaneo-Christov model, considering additional impacts of thermal conductivity and heat generation, and numerical solutions were obtained using the Runge-Kutta-Fehlberg method. The physical response related to velocity and temperature was investigated, showing that the momentum boundary-layer thickness affects the magnetic field strength and thermal boundary layer in opposite ways, while retardation and relaxation time effects have opposite impacts on the temperature field. The results are valuable for understanding transport phenomena involving hydromagnetic rheological fluids.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2022)
Article
Thermodynamics
Waqas Khan, Shalika Walker, Wim Zeiler
Summary: An improved stacked ensemble algorithm utilizing deep learning models was proposed for accurate solar energy forecast, showing better consistency and stability across different case studies. The model demonstrated an improvement of 10%-12% in R-2 value compared to other models, providing a comprehensive assessment on four different solar generation datasets.
Article
Thermodynamics
Guangyue Xu, Haoyun Dong, Zhenci Xu, Nishan Bhattarai
Summary: This study examines the future trajectory of China's carbon neutrality goal under different scenarios of economic development quality using the environmental Kuznets curve model and scenario analysis. The results indicate that significant improvements in economic development quality are necessary to achieve the carbon neutrality target.
Review
Thermodynamics
Harry Mahon, Dominic O'Connor, Daniel Friedrich, Ben Hughes
Summary: Mitigating climate change requires exploring a diverse range of technologies for reducing emissions. Seasonal thermal energy storage is an effective method to reduce energy demand and increase renewable resource efficiency. Despite some barriers, four advanced sensible heat storage methods are currently being implemented within energy systems.
Article
Thermodynamics
Jin Zhao, Ataul Karim Patwary, Abdul Qayyum, Majed Alharthi, Furrukh Bashir, Muhammad Mohsin, Imran Hanif, Qaiser Abbas
Summary: The study evaluates potential solutions to Pakistan's energy shortages with a focus on renewable green hydrogen sources from geothermal, wind, biomass, and solar energy. Wind energy is found to be the most efficient source for producing hydrogen energy in Pakistan, helping to meet local energy needs and reduce fossil fuel usage.
Article
Thermodynamics
Jia Liu, Yi Xue, Qi Zhang, Huimin Wang, Songhe Wang
Summary: The study demonstrates that the thermo-hydro-mechanical coupling model considering the deformation of fractal fractures is remarkably robust for modeling fracture opening and closing under coupling conditions. The evolution of fracture permeability presents certain heterogeneity related to fractal dimension, in-situ stress, and geothermal wells layout. Fractures with larger fractal dimension can interact more fully with the bedrock and further affect the thermal breakthrough.
APPLIED THERMAL ENGINEERING
(2022)
Review
Thermodynamics
Xiaoqing Ma, Shengxi Zhou
Summary: This paper comprehensively reviews the recent advances in flow-induced vibration energy harvesters in terms of their working principles, categories, enhancement methods, model derivation and calculation methods, influence of interface circuits, and energy harvesting efficiency calculation methods. The working principles and current development progress of various types of energy harvesters are discussed. Enhancement methods and critical challenges are characterized and summarized. Future research directions and prospects are proposed and discussed.
ENERGY CONVERSION AND MANAGEMENT
(2022)
Article
Thermodynamics
M. Sheikholeslami, M. Jafaryar
Summary: The turbulent flow of nanomaterial (a mixture of CNT and water) within a circular tube of a solar system absorber was numerically simulated in this article. The tube was equipped with a complex swirl flow device to enhance fluid-wall interaction and achieve warmer fluid. Ten mirrors were used to concentrate solar radiation, and the geometric parameters were calculated to optimize optical performance. The simulation employed a K-epsilon model based on the finite volume method. The results showed that increasing the CNT fraction improved thermal performance, and changing the pitch ratio and flow rate had significant effects on friction factor and convective factor.
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2023)
Article
Thermodynamics
Tong Qian, Xingyu Chen, Yanli Xin, Wenhu Tang, Lixiao Wang
Summary: This paper focuses on the synergistic operation between power networks and natural gas networks, as well as the challenges brought by integrating uncertain renewable energy. By adopting the method of distributionally robust chance constraints, the study effectively minimizes the probability of constraint violation. It also identifies packet loss as a key factor influencing convergence performance during iterative processes.
Article
Thermodynamics
Boqiang Lin, Yicheng Zhou
Summary: The study finds that China's green economic growth has been improving, with ecological civilization and social progress as the main drivers. However, innovation-driven development lags behind. There are significant regional differences in green economic growth, with the eastern region performing better than the central and western regions. These regional differences are shrinking over time. Factors such as population size, economic development level, technological innovation, industrial structure, urbanization, environmental regulation, and foreign direct investment have impacts on green economic growth, but the spatial effects of each factor are different. Policymakers should consider the spatiotemporal evolution of the green economy and its influencing factors when formulating targeted policies.
Review
Thermodynamics
Jacob W. Martin, Maurin Salamanca, Markus Kraft
Summary: This review discusses the formation of carbonaceous nanoparticles from gas-phase molecules in hydrocarbon flames, highlighting both their useful applications and negative impacts as pollutants. Advances in experimental techniques have allowed for the direct observation of gas phase precursors and the transformation into nanoparticles over the past decade. Questions remain regarding the mechanisms leading to nanoparticle formation, with physically stabilised soot inception proposed as a potential middle ground combining physical and chemical routes.
PROGRESS IN ENERGY AND COMBUSTION SCIENCE
(2022)
Article
Thermodynamics
Deqiang He, Chenyu Liu, Zhenzhen Jin, Rui Ma, Yanjun Chen, Sheng Shan
Summary: The health of bearings in flywheel energy storage systems is crucial for effective energy recovery during train braking, but diagnosing faults based on complex vibration signals is challenging. This study proposes a fault diagnosis method based on VMD energy entropy, which optimizes parameters to extract feature vectors and utilizes a deep learning model for fault diagnosis, achieving high diagnostic accuracy.
Review
Thermodynamics
Saman Rashidi, Nader Karimi, Bengt Sunden, Kyung Chun Kim, Abdul Ghani Olabi, Omid Mahian
Summary: Electrochemical systems can only achieve optimal performance within a narrow temperature range, and thermal management is crucial for the design and operation of these systems. While significant efforts have been made in cooling technologies for battery systems, heat transfer in other electrochemical systems commonly used for energy conversion and storage has not been critically reviewed.
PROGRESS IN ENERGY AND COMBUSTION SCIENCE
(2022)
Article
Thermodynamics
Ziyuan Cong, Yuwei Li, Yishan Pan, Bo Liu, Ying Shi, Jianguang Wei, Wei Li
Summary: In this paper, a CO2 foam fracturing fracture propagation model with temperature-pressure-phase coupling is established. The results show that improving the CO2 foam quality can significantly enhance the fracturing effect, and the fracture propagation is significantly affected by injection temperature.
Article
Thermodynamics
Sercan Yalcin, Satyam Panchal, Munur Sacit Herdem
Summary: Accurately estimating battery voltage and heat generation rate is crucial for safe and efficient operations of electric vehicles. This study proposes a novel scheme combining convolutional neural network and artificial bee colony algorithm for estimating HGR and voltage. The proposed model dynamically reveals hidden features in the data and uses new objective and fitness functions to optimize the estimates.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2022)
Article
Thermodynamics
Kexin Huang, Bo Su, Tong Li, Hanbing Ke, Mei Lin, Qiuwang Wang
Summary: Thermal stratification is the main cause of thermal fatigue failure in rectangular T-junctions. By setting an impeller with a constant rotation speed, the mixing behavior of hot and cold fluids can be improved, and various flow patterns including wall jet, deflecting jet, and impinging jet can be observed. The relationship between mixing length and blade diameter is not monotonic, and the optimal operating point is around D-p* = 0.5 for impellers with 2 blades.
APPLIED THERMAL ENGINEERING
(2022)
Article
Thermodynamics
Yin Zhang, Tong Qian, Wenhu Tang
Summary: This paper proposes a novel framework for integrating buildings and distribution networks that optimizes the safe operation of transformers, the thermal comfort of building occupants, and the energy savings of the distribution network. By coupling buildings to the distribution network, optimizing the integrated energy system, analyzing and adjusting transformer load ratios, and utilizing distribution network reconfiguration, the scheduling problems of flexible resources introduced by the contradiction between transformer safety and building comfort can be fully addressed.
Review
Thermodynamics
Qidong Xu, Zengjia Guo, Lingchao Xia, Zheng Li, Idris Temitope Bello, Keqing Zheng, Meng Ni, Qijiao He
Summary: This article comprehensively reviews the electrochemical performances and stabilities of SOFCs operating on various fuels. Although comparable power densities to hydrogen were frequently obtained, degradation problems induced by these fuels influence the long-term stable operation of SOFCs. Potential strategies from three perspectives of thermodynamics, kinetics and structure are proposed to solve degradation issues. The remaining challenges and future prospects of SOFCs fed by each fuel are separately elaborated.
ENERGY CONVERSION AND MANAGEMENT
(2022)
Article
Thermodynamics
S. Shaw, S. S. Samantaray, A. Misra, M. K. Nayak, O. D. Makinde
Summary: The steady hydromagnetic flow and heat transfer behavior of non-Newtonian (Cross) hybrid nanofluid with water as base fluid and SWCNT, and MWCNT as nanoparticles past a stretched cylinder has been analyzed. The contributory outcomes of the present investigation include upgraded Weissenberg and curvature parameters intensify the fluid motion and rate of heat transportation while that of magnetic field strength controls the motion.
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2022)
Article
Thermodynamics
Hongyan Zuo, Bin Zhang, Zhonghua Huang, Kexiang Wei, Hong Zhu, Jiqiu Tan
Summary: The article establishes a coupled electrochemical-thermal model to describe the surface temperature of a power lithium manganate battery during the discharging process, and estimates the SOC values under different discharging conditions using an improved functional link neural network model. The results indicate that the improved neural network model has higher SOC estimation accuracy.
