Article
Thermodynamics
Man -Wen Tian, Ibrahim B. Mansir, Sayed M. Eldin, Hamdi Ayed, Hassen Loukil, Nawaf Alkhamis
Summary: Research shows that using a two-stage thin-film solar thermoelectric generator is a cost-effective option compared to a single-stage design, and it can generate more power. The use of bismuth tellurides in the two-stage configuration significantly reduces the cost while improving the power output and exergy efficiency of the system.
CASE STUDIES IN THERMAL ENGINEERING
(2023)
Article
Green & Sustainable Science & Technology
Yuewu Huang, Xingguo Chen, Zhuo Chen
Summary: A novel cogeneration system, consisting of a dye-sensitized solar cell (DSSC), a solar selective absorber (SSA), and a two-stage annular thermoelectric generator (ATTEG), is developed to effectively utilize solar energy. The hybrid system converts short-wavelength solar energy into electricity using DSSC, while long-wave solar energy is converted into thermal energy by SSA to drive ATTEG for additional electricity generation. Mathematical equations for performance indicators are derived to investigate the energy relationship between DSSC and ATTEG. A comprehensive comparison of the hybrid system's performance with different solar irradiance and operating temperature is outlined. The study demonstrates the superior energy and exergy efficiency of DSSC-ATTEG compared to standalone DSSC, offering valuable insights into waste heat recovery from round shaped heat sources through detailed parameter analyses.
Article
Thermodynamics
Hao-Feng Lin, Ibrahim B. Mansir, Sayed M. Eldin, Nawaf Alkhamis, Sultan Alqahtani, Sultan Alshehery
Summary: This study investigates the efficiency of segmented in-plane solar annular thermoelectric generator from economic, energetic and exergetic points of view. The results show that the segmented thermoelectric generator is more efficient in terms of economic cost for high heat fluxes. Case 4 provides the lowest dollar/watt value for heat fluxes less than 40 kW/m2.
CASE STUDIES IN THERMAL ENGINEERING
(2023)
Article
Thermodynamics
Cong Lai, Qin Zhao, Zhufeng Zhang, Houcheng Zhang, Shujin Hou, Jiapei Zhao
Summary: A new coupling system model is proposed in this study, which can effectively collect the incident sunlight to improve energy and power efficiency. Numerical calculation results show that the performance of the coupling system can be optimized by adjusting various parameters.
ENERGY CONVERSION AND MANAGEMENT
(2021)
Article
Energy & Fuels
Liuyang Ma, Qin Zhao, Houcheng Zhang
Summary: A new cogeneration system model integrating a concentrated photovoltaic cell and a two-stage thermoelectric generator is proposed, showing increased power density and energy efficiency compared to stand-alone CPV systems. Mathematical relations and formulas for power output and efficiency are determined under different operating conditions, providing insights for designing efficient solar-to-electricity hybrid systems.
SUSTAINABLE ENERGY GRIDS & NETWORKS
(2021)
Article
Thermodynamics
Wei Zhang, Chen Shu-jin, Ibrahim B. Mansir, Pradeep Kumar Singh, Fatimah Malek Mohsen, Ahmed Farag, Mahidzal Dahari, H. Elhosiny Ali, Souhail Mohamed Bouzgarrou
Summary: This paper proposes a novel linear arrangement of legs for annular thermoelectric generators, which greatly improves design flexibility compared to the conventional π structure. Numerical simulations were conducted to investigate the effects of various parameters on the performance of the linear annular thermoelectric generator. The results showed that a height ratio, angle ratio, and thickness ratio of 0.5 achieved the highest conversion and exergy efficiencies, while minimizing thermal stress on the legs and cost per watt of output power.
THERMAL SCIENCE AND ENGINEERING PROGRESS
(2023)
Article
Thermodynamics
Giovanni Pennelli, Elisabetta Dimaggio, Massimo Macucci
Summary: Thermoelectric generator devices have great potential for energy scavenging and green energy harvesting. Researchers proposed a straightforward approach using an equivalent electric circuit model to support the design and optimization of thermoelectric systems, considering both thermal and electrical issues.
Article
Energy & Fuels
Wei Niu, Xiaoshan Cao
Summary: This paper presents an explicit analytical solution for the maximum output power of annular thermoelectric generators (ATEG), which has been proven to be highly accurate. The maximum output power between ATEG and trapezoidal thermoelectric generator (TTEG) is then compared, and the results show that the relative error can reach the order of 10(-3) for the appropriate geometric parameter delta. The explicit analytical results of ATEG can provide some reference for the performance optimization of TTEG under suitable working conditions, with relative errors of 0.0261% and 0.074% for Bi2Te3 and PbTe materials.
Article
Green & Sustainable Science & Technology
Congzheng Qi, Yuxuan Du, Lingen Chen, Yong Yin, Yanlin Ge
Summary: In this study, a finite-time thermodynamic model is developed for a solar-driven two-stage multi-element thermoelectric generator. The model takes into account external heat transfers, radiation loss of the collector, Joule heat, and Fourier heat leakage. Analytical formulas for heat balance equations, power, and efficiency are derived. The system performance is explored by solving four equations simultaneously to obtain the working temperatures of the thermoelectric device. Optimization of performance is achieved by adjusting the electrical current, thermoelectric element distribution, and heat exchanger inventory distribution. The influences of various factors on maximal power and efficiency are analyzed, and the upper bounds of power and efficiency are determined.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Thermodynamics
Yan Cao, Nidal H. Abu-Hamdeh, Hazim Moria, Soheil Asaadi, Radi Alsulami, Hamed Sadighi Dizaji
Summary: This paper proposes a thin-film flexible annular solar thermoelectric generator for curved and variable surfaces, and conducts a comprehensive simulation to investigate the impact of various parameters on the generator's performance. The study reveals insights such as the optimal number of legs and inner radius for maximizing output power.
APPLIED THERMAL ENGINEERING
(2021)
Article
Chemistry, Physical
Longbing Yi, Haowei Xu, Haibing Yang, Shaolin Huang, Hao Yang, Yanan Li, Qiang Zhang, Zhe Guo, Haoyang Hu, Peng Sun, Xiaojian Tan, Guoqiang Liu, Kun Song, Jun Jiang
Summary: A theoretical model was developed to analyze the Bi2Te3-based TEG system, and the results showed that increasing the height of TEG not only improves conversion efficiency but also leads to a peak value of output power. The height of the fin plays a more essential role than the thickness of the fin in optimizing the performance of TEG. By adding an electrical fan, the net output power is doubled and the net conversion efficiency is improved by more than 80%. The study also designed the structure of the TEG system for different material parameters using the theoretical method.
JOURNAL OF POWER SOURCES
(2023)
Article
Thermodynamics
Amit Kumar Juneja, P. Barnwal, A. K. Sharma, Banashree Naskar, V. K. Ammu
Summary: This study conducted thermodynamic and exergoeconomic analysis of a single-stage spray drying unit for skim milk powder production. The energy and exergy efficiency of the plant were calculated as 89.63% and 49.19%, respectively. The drying chamber and booster pump showed the highest potential for improvement. The drying chamber also had the highest processing cost (percentage relative cost difference: 59.84%), followed by the cyclone separator (percentage relative cost difference: 48.98%). Based on these findings, improvements can be made to the high potential components of the spray drying plant.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2023)
Article
Environmental Sciences
Emmanuel Odeh, Ini Ikpe, Fidelis Abam
Summary: This paper presents an advanced analysis of the exergoenvironmental and thermo-sustainability of a 5-million ton capacity cement plant using real-time operational data. The analysis focuses on component-wise modeling and separates the exergy destruction into different parts for two production lines. The results show varying levels of exergy efficiency and exergoenvironmental factor for the different components, with potential for improvement identified in the study.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Thermodynamics
Xingguo Chen, Yuewu Huang, Zhuo Chen
Summary: This study investigates a coupled system consisting of a photovoltaic module, solar selective absorber, and two-stage thermoelectric generator to improve the performance of solar energy capture. The numerical results show that the coupled system has higher energy efficiency, power output, and exergy efficiency compared to a standalone photovoltaic module. Sensitivity analysis reveals the key parameters that affect the coupled system.
APPLIED THERMAL ENGINEERING
(2022)
Article
Engineering, Chemical
Amit Kumar Juneja, P. Barnwal, A. K. Sharma, Banashree Naskar
Summary: Thermodynamic and exergoeconomic analyses were conducted on a two-stage spray drying plant, evaluating parameters such as energy efficiency, exergy efficiency, energy improvement potential, exergy improvement potential, etc. The plant demonstrated energy and exergy efficiencies of 72.90% and 35.15% respectively, with the drying chamber and homogenizer showing the highest improvement potential.
Article
Thermodynamics
Samira Pourhedayat, Hamed Sadighi Dizaji, Samad Jafarmadar, Shahram Khalilarya
APPLIED THERMAL ENGINEERING
(2018)
Article
Thermodynamics
Soheil Asaadi, Shahram Khalilarya, Samad Jafarmadar
ENERGY CONVERSION AND MANAGEMENT
(2018)
Article
Thermodynamics
Parisa Mojaver, Shahram Khalilarya, Ata Chitsaz
ENERGY CONVERSION AND MANAGEMENT
(2018)
Review
Energy & Fuels
Ali Navid, Shahram Khalilarya, Mohammad Abbasi
Article
Thermodynamics
Ramin Rezazadeh, Nader Pourmahmoud, Soheil Asaadi
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2018)
Article
Engineering, Mechanical
Sina Hassanzadeh Saraei, Shahram Khalilarya
JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY
(2018)
Article
Thermodynamics
Mehdi Mansoury, Samad Jafarmadar, Shahram Khalilarya
INTERNATIONAL JOURNAL OF EXERGY
(2018)
Article
Thermodynamics
Soheil Asaadi, Hamid Abdi
Summary: The heat transfer enhancement in plate-fin heat exchangers using vortex generators with different nanoparticle volume fractions was numerically simulated. Results showed that using nanofluid can increase heat transfer coefficient by 20% and pressure drop by 18% compared to pure water. Among the vortex generator types, MDWP2 exhibited the highest heat transfer performance but also led to the highest pressure drop in the studied range of Reynolds number.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2021)
Article
Thermodynamics
Shu-Rong Yan, Hazim Moria, Soheil Asaadi, Hamed Sadighi Dizaji, Shahram Khalilarya, Kittisak Jermsittiparsert
APPLIED THERMAL ENGINEERING
(2020)
Article
Thermodynamics
Xiao-Xiao Tian, Soheil Asaadi, Hazim Moria, Amr Kaood, Samira Pourhedayat, Kittisak Jermsittiparsert
Article
Thermodynamics
Shu-Rong Yan, Hazim Moria, Samira Pourhedayat, Mehran Hashemian, Soheil Asaadi, Hamed Sadighi Dizaji, Kittisak Jermsittiparsert
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2020)
Article
Thermodynamics
Hamid Abdi, Soheil Asaadi, Hamid Azimi Kivi, Seyed Mehdi Pesteei
INTERNATIONAL JOURNAL OF HEAT AND TECHNOLOGY
(2019)
Article
Thermodynamics
Hai Zhao, Puzhen Gao, Xiaochang Li, Ruifeng Tian, Hongyang Wei, Sichao Tan
Summary: This study numerically investigates the interaction between flow-induced vibration and forced convection heat transfer in a tube bundle. The results show that the impact of flow-induced vibration on heat transfer varies in different flow velocity regions.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Rohit Chintala, Jon Winkler, Sugirdhalakshmi Ramaraj, Xin Jin
Summary: The current state of fault detection and diagnosis for residential air-conditioning systems is expensive and not suitable for widespread implementation. This paper proposes a cost-effective solution by introducing an automated fault detection algorithm as a screening step before more expensive tests can be conducted. The algorithm uses home thermostats and local weather information to identify thermodynamic parameters and detect high-impact air-conditioning faults.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
A. Azimi, N. Basiri, M. Eslami
Summary: This paper presents a novel optimization algorithm for improving the water-film cooling system of photovoltaic panels, resulting in a significant increase in net energy generation.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Duc-Thuan Phung, Chin-Hsiang Cheng
Summary: In this study, a novel CFDMD model is used to analyze and investigate the behavior of thermal-lag engines (TLE). The study shows that the CFDMD model effectively captures the thermodynamic behavior of the working gas and the dynamic behavior of the engine mechanism. Additionally, the study explores the temporal evolution of engine speed and the influence of various parameters on shaft power and brake thermal efficiency. The research also reveals the existence of a thermal-lag phenomenon in TLE.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Haiying Yang, Yinjie Shen, Lin Li, Yichen Pan, Ping Yang
Summary: The purpose of this article is to find a measure to improve the interfacial thermal transfer of graphene/silicon heterojunction. Through molecular dynamics simulation, it is found that surface modification can significantly reduce the thermal resistance, thereby improving the thermal conductivity of the graphene/silicon interface.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Qiong Wu, Yancheng Wang, Haonan Zhou, Xingye Qiu, Deqing Mei
Summary: This article introduces a visible methanol steam reforming microreactor, which uses an optical crystal as an observation window and measures the reaction temperature in real-time using infrared thermography. The results show that under lower oxygen to carbon ratio conditions, the microreactor has a higher heating rate and a stable gradient in temperature distribution.
APPLIED THERMAL ENGINEERING
(2024)
Review
Thermodynamics
Giulia Manco, Umberto Tesio, Elisa Guelpa, Vittorio Verda
Summary: In the past decade, there has been a growing interest in studying energy systems for the combined management of power vectors. Most of the published works focus on finding the optimal design and operations of Multi Energy Systems (MES). However, for newcomers to this field, understanding how to achieve the desired optimization details while controlling computational expenses can be challenging and time-consuming. This paper presents a novel approach to analyzing the existing literature on MES, with the aim of guiding practical development of MES optimization. Through the discussion of six case studies, the authors provide a mathematical formulation as a reference for building the model and emphasize the impact of different aspects on the problem nature and solver selection. In addition, the paper also discusses the different approaches used in the literature for incorporating thermal networks and storage in the optimization of multi-energy systems.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Xuepeng Yuan, Caiman Yan, Yunxian Huang, Yong Tang, Shiwei Zhang, Gong Chen
Summary: In this study, a multi-scale microgroove wick (MSMGW) was developed by laser irradiation, which demonstrated superior capillary performance. The surface morphology and performance of the wick were affected by laser scan pitch, laser power, repetition frequency, and scanning speed. The MSMGW showed optimal capillary performance in alumina material and DI water as the working fluid.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Maofei Mei, Feng Hu, Chong Han
Summary: This paper proposes an effective local search method based on detection of droplet boundaries for understanding the dynamic process of droplet growth during dropwise condensation. The method is validated by comparing with experimental data. The present simulation provides an effective approach to more accurately predict the nucleation site density in future studies.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Rahul Kumar Sharma, Ashish Kumar, Dibakar Rakshit
Summary: The study explores the use of phase change materials (PCM) as a retrofit with Heating Ventilation and Air-conditioning systems (HVAC) to reduce energy consumption and improve air quality. By incorporating PCM with specific thickness and fin configurations, significant energy savings can be achieved in comparison to standard HVAC systems utilizing R134a. This research provides policymakers with energy-efficient and sustainable solutions for HVAC systems to combat climate change.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Zhenhua Ren, Xiangjin Meng, Xingang Qi, Hui Jin, Yunan Chen, Bin Chen, Liejin Guo
Summary: This paper investigates the heat transfer mechanism and factors influencing thermal radiation in the process of supercritical water gasification (SCWG) of coal, and proposes a comprehensive numerical model to simulate the process. Experimental validation results show that thermal radiation accounts for a significant proportion of the total heat exchange in the reactor and a large amount of radiant energy exists in the important spectral range of supercritical water. Enhancing radiative heat transfer can effectively increase the temperature of the reaction medium and the gasification rate.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Mauro Abela, Mauro Mameli, Sauro Filippeschi, Brent S. Taft
Summary: Pulsating Heat Pipes (PHP) are passive two-phase heat transfer devices with a simple structure and high heat transfer capabilities. The actual unpredictability of their dynamic behavior during startup and thermal crisis hinders their large-scale application. An experimental apparatus is designed to investigate these phenomena systematically. The results show that increasing the number of evaporator sections and condenser temperature improves the performance of PHP. The condenser temperature also affects the initial liquid phase distribution and startup time.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Ke Gan, Ruilian Li, Yi Zheng, Hui Xu, Ying Gao, Jiajie Qian, Ziming Wei, Bin Kong, Hong Zhang
Summary: A 3-dimensional enhanced heat pipe radiator has been developed to improve heat dissipation and temperature uniformity in cooling high-power electronic components. Experimental results show that the radiator has superior heat transfer performance compared to a conventional aluminum fin radiator under different heating powers and wind speed conditions.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Xinyi Zhang, Shuzhong Wang, Daihui Jiang, Zhiqiang Wu
Summary: This study focuses on recovering waste heat from blast furnace slag using dry centrifugal pelletizing technology. A comprehensive two-dimensional model was developed to analyze heat transfer dynamics and investigate factors influencing heat exchange efficiency. The findings have important implications for optimizing waste heat recovery and ensuring safe operations.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Xincheng Wu, An Zou, Qiang Zhang, Zhaoguang Wang
Summary: The boosting heat generation rate of high-performance processors is challenging traditional cooling techniques. This study proposes a combined design of active jet intermittency and passive surface modification to enhance heat transfer.
APPLIED THERMAL ENGINEERING
(2024)
