Article
Green & Sustainable Science & Technology
Anish Malan, K. Ravi Kumar
Summary: This study investigates the impact of wind load on the stability of a large aperture parabolic trough solar collector (PTSC) and provides analysis and estimation. The findings contribute to optimizing the structural design and operational stability of solar thermal power plants.
Article
Green & Sustainable Science & Technology
Shri Ram, H. Ganesan, Vishnu Saini, Abhinav Kumar
Summary: In this investigation, a parabolic trough solar collector with an evacuated tube was fabricated and analyzed. The collector's efficiency increased with the use of CuO-H2O nanofluid as the working fluid, and the efficiency also increased with the volume flow rate of the working fluid. The heat transfer coefficients were higher for the CuO-H2O nanofluid compared to water, and the efficiency increase for different nanoparticle's concentrations was observed.
Article
Thermodynamics
Recep Ekiciler, Kamil Arslan, Oguz Turgut, Burak Kursun
Summary: This study investigates the three-dimensional heat transfer and flow characteristics of different hybrid nanofluids in a parabolic trough solar collector receiver under turbulent flow conditions. Results show that hybrid nanofluids outperform the base fluid in terms of heat transfer and flow features, with heat transfer enhancement correlated to Reynolds number and nanoparticle volume fraction. Among the tested nanofluids, Ag-MgO/Syltherm 800 with 4.0% nanoparticle volume fraction is identified as the most efficient working fluid for the PTC receiver.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2021)
Article
Thermodynamics
Kun Hong, Yang Yang, Saman Rashidi, Yu Guan, Qingang Xiong
Summary: This study numerically investigated the thermal and flow characteristics of a parabolic-trough solar collector, showing that an increase in Cu nanoparticle concentration led to an increase in Nu and that the effect on heat transfer enhancement was more significant at lower Reynolds numbers. The study also assessed the impact of direct normal irradiance changes on the performance of the solar collector.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2021)
Article
Chemistry, Multidisciplinary
Tayeb Fahim, Samir Laouedj, Aissa Abderrahmane, Zied Driss, El Sayed Mohamed Tag-ElDin, Kamel Guedri, Obai Younis
Summary: This study presents a numerical analysis on improving heat transmission in the receiver of a parabolic trough solar collector by introducing perforated barriers. The use of obstacles increases pressure loss but enhances the collector's performance. Computational Fluid Dynamics (CFD) model analysis is conducted with the thermal oil D12 as the working fluid. The receiver tube with three holes (PO3) shows better heat transfer characteristics and can achieve significant enhancement of the system's performance.
FRONTIERS IN CHEMISTRY
(2023)
Article
Energy & Fuels
Vednath P. Kalbande, Pramod Walke, Kishor Rambhad
Summary: The combination of oil-based thermal energy storage system with solar collector is popular due to its simple design and suitability for various domestic applications, although there is a temperature range limitation.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Thermodynamics
Rishikesh Kumar, M. A. Hassan
Summary: This study investigates the use of an improved energy transport fluid for enhancing the performance of solar parabolic trough collectors. The study found that suspending Fe2O3 nanoparticles in water-based nanofluids can significantly increase energy transport and performance evaluation. The nanofluids exhibit a decrease in specific heat, an increase in thermal conductivity, and a slight increase in viscosity. The surface heat transfer coefficient and performance evaluation criterion of the nanofluids increase with nanoparticle concentration and Reynolds number.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2023)
Article
Thermodynamics
G. Vijayan, P. P. Shantharaman, Ramalingam Senthil, R. Karunakaran
Summary: This study analyzes the performance of an unshielded receiver tube integrated solar parabolic trough collector using low-concentration Al2O3/deionized water nanofluid as the heat transfer fluid. The results show that the concentration and flow rate of the nanofluid have a positive impact on the collector efficiency.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2022)
Article
Thermodynamics
Xiaojing Li, Pengpeng Yan, Jiangjiang Wang, Tao Yang
Summary: This study presents a numerical simulation of parabolic trough solar collector systems with different forms of vortex generators inserted in the absorber tube using [EMIM][BF4] ionic liquid. The effects of varying parameters on the thermal performance of the system are discussed. The results show that the use of vortex generators can significantly improve the thermal efficiency and exergetic efficiency of the system under certain parameters.
APPLIED THERMAL ENGINEERING
(2024)
Article
Green & Sustainable Science & Technology
Hussein A. Mohammed, Hari B. Vuthaluru, Shaomin Liu
Summary: This article presents a numerical analysis on the thermohydraulic and thermodynamic performance of a parabolic trough solar collector receiver tube equipped with wavy promoters. The results show that the utilization of wavy promoters inside the PTSC's receiver tube can significantly augment the thermal performance, thereby increasing the overall thermal efficiency.
Article
Green & Sustainable Science & Technology
Tahereh Gholaminejad, Ali Khaki-Sedigh
Summary: In this paper, a deep Model Predictive Control (MPC) method based on the Koopman operator is proposed to control the Heat Transfer Fluid (HTF) temperature in concentrated solar power plants. A deep Long Short-Term Memory (LSTM) autoencoder is designed to calculate Koopman eigenfunctions, which are used to convert a non-linear model to a Koopman-based linear model. The results of simulations demonstrate the satisfactory tracking performance of the proposed approach.
Article
Thermodynamics
Mohamed Elmnefi, Waqas Al-Khazraji
Summary: This study aims to enhance the thermal efficiency and reduce the cost of parabolic trough solar collectors (PTSC) by investigating the effects of different operating conditions. A novel configuration using a noncirculated nanofluid was designed to absorb solar radiation. Computational fluid dynamics simulations and experimental tests were conducted to compare the performance of single and triple copper tube models. The findings showed that the single copper tube model had superior performance and achieved a maximum thermal efficiency of 55.31%.
INTERNATIONAL JOURNAL OF NUMERICAL METHODS FOR HEAT & FLUID FLOW
(2023)
Article
Thermodynamics
Dan Zheng, Jin Yao, Hengxuan Zhu, Jin Wang, Chungen Yin
Summary: By using magnetic nanofluids as the thermal medium, a parabolic trough direct absorption solar collector has improved surface absorption and solar energy utilization. Experimental results show significant improvements in heat transfer, thermal efficiency, and exergy efficiency compared to deionized water when using a magnetic nanofluid with a nanoparticle concentration of 0.2wt%. Furthermore, when exposed to S-S magnetic fields, the performance of the magnetic nanofluid is further enhanced. The results have important implications for designing and optimizing direct absorption solar collectors.
ENERGY CONVERSION AND MANAGEMENT
(2023)
Article
Engineering, Chemical
Hussein A. Mohammed, Hari B. Vuthaluru, Shaomin Liu
Summary: The study focused on the thermal-hydraulic performance of a PTSC receiver's tube equipped with conical turbulators, aiming to enhance thermal efficiency by using new advanced coolants. The findings showed that using Ag-SWCNT/Syltherm oil significantly augmented the thermal performance, leading to increased thermal and exergetic efficiencies.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2021)
Article
Energy & Fuels
Olusola Bamisile, Dongsheng Cai, Humphrey Adun, Michael Adedeji, Mustafa Dagbasi, Ferdinard Dika, Qi Huang
Summary: The mixture of nanoparticles with base fluid for heat transfer fluid's performance enhancement has been widely studied, and this paper presents a detailed parametric comparison of mono/hybrid nanofluids with other fluids' applications in solar thermal collectors. The results show that nanofluids have better performance in flat plate collectors and parabolic trough collectors, and working fluids with higher temperature output have lower energy efficiencies and useful energy output.
Article
Thermodynamics
Bingguo Zhu, Jinliang Xu, Chenshuai Yan, Jian Xie
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2020)
Article
Thermodynamics
Jia-Qi Guo, Ming-Jia Li, Jin-Liang Xu, Jun-Jie Yan, Teng Ma
ENERGY CONVERSION AND MANAGEMENT
(2020)
Article
Thermodynamics
Mingjia Li, Ge Wang, Jinliang Xu, Jingwei Ni, Enhui Sun
Summary: The benefits of large-scale supercritical CO2 coal-fired power plants are analyzed and compared with ultra-supercritical water-steam Rankine cycle coal-fired power plants in terms of energy environment and economy. The results show that the S-CO2 coal-fired power generation system outperforms the USC coal-fired power generation system in terms of energy consumption, resource depletion, environmental impact, and investment cost.
JOURNAL OF THERMAL SCIENCE
(2022)
Article
Thermodynamics
Hao Guo, Xianbing Ji, Jinliang Xu
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2020)
Article
Energy & Fuels
Guansheng Yao, Yijun Feng, Guohua Liu, Jinliang Xu
Article
Thermodynamics
Haisong Zhang, Jinliang Xu, Xinjie Zhu, Jian Xie, Mingjia Li, Bingguo Zhu
Summary: This paper investigates the relationship between pressure drop and heat transfer in supercritical carbon dioxide (sCO(2)), introducing the concept of pseudo-boiling to characterize the flow and heat transfer in the supercritical domain. Different regimes of heat transfer behavior and pressure drops are identified, with a new correlation for friction factors developed to better predict the results in sCO(2) systems.
APPLIED THERMAL ENGINEERING
(2021)
Editorial Material
Thermodynamics
Jinliang Xu, Noam Lior, Mingjia Li, Zheng Miao
Article
Thermodynamics
Chao Liu, Jinliang Xu, Mingjia Li, Zhaofu Wang, Zeyu Xu, Jian Xie
ENERGY CONVERSION AND MANAGEMENT
(2020)
Article
Physics, Multidisciplinary
Guanglin Liu, Qingyang Wang, Jinliang Xu, Zheng Miao
Summary: The study focuses on the subcritical saturated organic Rankine cycle system with four different organic working fluids at various heat source temperatures. It concludes that the efficiency of the two-stage system is affected by the choice of organic working fluids and is higher than that of a single-stage system.
Article
Thermodynamics
Xiongjiang Yu, Jinliang Xu, Guohua Liu, Xianbing Ji
Summary: A new concept of phase-separation evaporator is proposed in this study, where flow instabilities can be suppressed by using gradient pinfin-porous wall microchannels. The high-frequency release of vapor bubbles and stable heat transfer in bare channels enable stable heat transfer under different operating parameters.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2021)
Article
Thermodynamics
Chunlei Cao, Xiaojing Ma, Xiaotian He, Jinliang Xu, Jian Xie, Guohua Liu
Summary: The study demonstrates that using a soft surface can significantly enhance boiling heat transfer efficiency, especially under saturated boiling conditions. The soft surface can reduce bubble departure size and increase departure frequency, thereby lowering the wall superheating temperature. The formation of elastocapillary waves and dynamic wrinkles can improve heat transfer effect by disturbing the near-wall boundary layer.
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2021)
Article
Thermodynamics
Enhui Sun, Jinliang Xu, Mingjia Li, Hangning Li, Chao Liu, Jian Xie
ENERGY CONVERSION AND MANAGEMENT-X
(2020)
Article
Chemistry, Multidisciplinary
Guihua Tang, Dong Niu, Lin Guo, Jinliang Xu
Article
Thermodynamics
Bingguo Zhu, Jinliang Xu, Haisong Zhang, Jian Xie, Mingjia Li
APPLIED THERMAL ENGINEERING
(2020)
Review
Thermodynamics
Hao Guo, Xianbing Ji, Jinliang Xu
FRONTIERS IN HEAT AND MASS TRANSFER
(2020)
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)
