Article
Energy & Fuels
Reji R. Kumar, M. Samykano, A. K. Pandey, K. Kadirgama, V. V. Tyagi
Summary: Thermal energy storage systems are crucial for modern energy production, and nano-enhanced phase change materials (NePCM) can improve the thermophysical properties of base PCM. However, the poor thermal conductivity and light transmission capability of the dispersed nanoparticles are major challenges. This research focuses on addressing those challenges by dispersing pristine and functionalized multi-walled carbon nanotubes (MWCNT and FMWCNT) in salt hydrate PCM, leading to improved thermal conductivity, latent heat, and solar spectrum absorption.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2022)
Article
Chemistry, Physical
Jinghao Lin, Yuexing Ouyang, Lan Chen, Kai Wen, Yan Li, Haoze Mu, Qinglei Ren, Xiaozhu Xie, Jiangyou Long
Summary: This study successfully enhanced the solar absorption capacity of EG-paraffin wax composite PCMs by adding CNTs, while maintaining good thermal conductivity and latent heat. This high-performance composite PCM has potential importance in solar-thermal conversion applications.
SURFACES AND INTERFACES
(2022)
Article
Thermodynamics
Pingrui Huang, Gaosheng Wei, Liu Cui, Chao Xu, Xiaoze Du
Summary: A novel dual-phase change material (PCM) heat sink using both low melting point alloy (LMPA) and paraffin was proposed in this paper. By optimizing the fin structure and the LMPA volume fraction, the synchronization of the melting processes of the two PCMs can be improved, and the performance of the heat sink can be enhanced.
APPLIED THERMAL ENGINEERING
(2021)
Article
Materials Science, Paper & Wood
Yao Chu, Yibo Wang, Shiru Min, Weijia Xue, Lingang Li, Fenglin Huang, Yibing Cai
Summary: In this study, a flexible porous framework was constructed and PEG was encapsulated to fabricate composite phase change materials (PCMs) with high energy storage density, stable microstructure, outstanding heat response behavior, and light to thermal conversion performance. This research provides a new strategy for the design and development of advanced composite PCMs.
Article
Green & Sustainable Science & Technology
Faisal Hassan, Furqan Jamil, Abid Hussain, Hafiz Muhammad Ali, Muhammad Mansoor Janjua, Shahab Khushnood, Muhammad Farhan, Khurram Altaf, Zafar Said, Changhe Li
Summary: This review discusses the applications of phase change materials (PCMs) in energy conservation and thermal control. Various methods, such as adding highly thermal conductivity nanoparticles and encapsulation, have been used to improve the low thermal conductivity of PCMs. PCMs have a wide range of applications, including in photovoltaic, thermal management, and food packaging. Based on analysis of recent literature, phase transition temperature, phase transition enthalpy, and thermal conductivity are identified as important parameters for selecting suitable PCMs.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2022)
Article
Polymer Science
Cristina Lavinia Nistor, Ioana Catalina Gifu, Elena Maria Anghel, Raluca Ianchis, Cristiana-Diana Cirstea, Cristian Andi Nicolae, Augusta Raluca Gabor, Irina Atkinson, Cristian Petcu
Summary: This paper describes the preparation of shape-stabilized phase change materials (ssPCMs), which are new PEG(6000)-silica-MWCNTs composites, for latent heat storage. An innovative method was used to obtain the new organic-inorganic hybrid materials, in which PEG chains and hydroxyl functionalized multiwall carbon nanotubes (MWCNTs-OH) were covalently connected to silica matrix. The optimal amount of PEG(6000) in the sol-gel reaction mixture was investigated to prevent PEG leakage after repeated heating-cooling cycles.
Article
Energy & Fuels
R. Reji Kumar, A. K. Pandey, M. Samykano, Yogeshwar Nath Mishra, R. V. Mohan, Kamal Sharma, V. V. Tyagi
Summary: In this research, the thermophysical properties of salt hydrate PCMs were improved by dispersing multi-walled carbon nanotubes (MWCNTs) and functionalized multi-walled carbon nanotubes (FMWCNTs) nanoparticles. The prepared nanocomposite showed enhanced melting enthalpy and thermal conductivity, making it a potential candidate for solar thermal energy storage applications.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Energy & Fuels
Zhengkai Wei, Xiaowei Fu, Bo Wu, Liang Jiang, Yuechuan Wang, Anqian Yuan, Hualiang Xu, Jingxin Lei
Summary: The composite materials of paraffin/methyl stearate/multi-walled carbon nanotubes have a wide range of phase change temperatures and high latent heat, making them suitable for thermal energy storage applications.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Review
Chemistry, Multidisciplinary
Ghada Ben Hamad, Zohir Younsi, Hassane Naji, Fabien Salauen
Summary: The paper reviews the properties of PCMs, studies on microencapsulation techniques, and emphasizes critical examination of existing techniques and factors influencing microcapsule performance. It investigates microencapsulation efficiency and limitations of each technique, highlighting optimal operating conditions for each process.
APPLIED SCIENCES-BASEL
(2021)
Article
Energy & Fuels
Claudia Fabiani, Carolina Santini, Marco Barbanera, Tommaso Giannoni, Gianluca Rubino, Franco Cotana, Anna Laura Pisello
Summary: In this study, different phase change materials (PCMs) were incorporated into gypsum panels by stabilizing them in biochar and lignin through vacuum impregnation technique. The goal was to produce an environmentally friendly shape-stabilized material that can be easily integrated into gypsum-based building components. The thermophysical performance and long-term stability of the obtained compounds were analyzed using various techniques. The results showed promising thermal buffer capability of the shape-stabilized samples, with a higher impregnation rate for a paraffin with a melting temperature of 21 degrees C. The samples exhibited relatively stable behavior for applications within typical local boundary conditions.
JOURNAL OF ENERGY STORAGE
(2023)
Review
Energy & Fuels
Surajudeen Sikiru, Temidayo Lekan Oladosu, Temitope Ibrahim Amosa, Sanusi Yekinni Kolawole, Hassan Soleimani
Summary: This study provides a cutting-edge review of recent literature on thermal energy storage systems for solar thermal management. It also gives an in-depth overview of solar thermal storage mechanisms and reviews the application of phase change materials (PCM) and photovoltaic performance indicator variables. The study summarizes the research trend and research gap in PCM adoption to photovoltaic energy harnessing.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Energy & Fuels
Svetlana N. Gorbacheva, Veronika V. Makarova, Sergey O. Ilyin
Summary: This study considered using hydrophobic nano-sized silicon dioxide as a stabilizer to obtain stable dispersions of graphite in paraffin wax, and investigated the joint influence of silica and graphite fillers on the ability of paraffin wax to accumulate and conduct heat.
JOURNAL OF ENERGY STORAGE
(2021)
Article
Energy & Fuels
Anggito P. Tetuko, Achmad Maulana S. Sebayang, Amdy Fachredzy, Eko A. Setiadi, Nining S. Asri, Ayu Yuswita Sari, Fhandi Purnomo, Cahyo Muslih, Muhammad A. Fajrin, Perdamean Sebayang
Summary: These investigations studied the use of different PCMs, including paraffin-magnetite composite, paraffin, and PEG, encapsulated in concretes for thermal energy storage. The concretes were fabricated using lightweight aggregate, cement, sand, and water, with copper tubes of different formations installed. The analyses of PCMs included morphology, melting point, latent heat, thermal conductivity, and phase transition, and temperature distributions were monitored using thermocouples. The findings showed that PEG had the highest melting point and latent heat, and adding magnetite particles improved thermal conductivity. The thermal resistance in the concretes was influenced by the properties of the PCMs and the presence of copper tubes.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Green & Sustainable Science & Technology
Bohui Lu, Yongxue Zhang, Dong Sun, Xiaolei Jing
Summary: The study prepared paraffin/expanded graphite composite phase change materials, which showed improved thermal conductivity and melting temperature by adding expanded graphite. The fabrication process of the composite PCMs was determined to be purely physical without generating new substances.
Article
Chemistry, Physical
Muhammad Shaban, Talha Irfan Khan, Muhammad Anwar, Meshal Alzaid, Rakan Alanazi
Summary: This study focuses on enhancing the charging rate and the uniformity of the melting rate in thermal energy storage units (TESU) based on phase change materials (PCM). By symmetrically placing two horizontal partial fins in the PCM-based TESU, the melting rate and the charging rate can be improved effectively.
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)