Article
Engineering, Environmental
Yinshuang Wang, Jie Luo, Shuo Wang, Qun Ma, Deqiu Zou
Summary: A novel power battery thermal management system using GO emulsion as coolant and SSPCM as channel has been designed, showing significantly improved temperature uniformity under high charge-discharge rates.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Energy & Fuels
Xu Liu, Tianyu Cai, Shubin Jiang, Zhuoni Jiang, Fangfang He, Yongsheng Li, Ren He, Kai Zhang, Wenbin Yang
Summary: This study numerically simulated the melting and solidification process of silicone rubber/paraffin@SiO2 shape-stabilized phase change material and investigated the effects of heating conditions and phase change microcapsules content on heat transfer. Results showed that thermal conductivity was the main factor affecting heat transfer during melting, while enthalpy was the main factor during solidification, with heat transfer relying mainly on conduction.
JOURNAL OF ENERGY STORAGE
(2021)
Article
Materials Science, Textiles
Wei Zhang, Yibo Zhang, Jiming Yao, Sainan Wei, Kailiang Lu
Summary: Disodium phosphate dodecahydrate was blended with n-octadecane to form a phase change material (PCM) using reversed-phase emulsification. A composite phase change material (CPCM) with shape stability was fabricated by impregnating a cellulose sponge based on cellulose nanocrystals. The resulting sandwich structured thermal insulation fabric showed improved thermal insulation efficiency of 17.7% to 18.2% compared to the original fabric, and had a photothermal conversion rate of 25.88%.
JOURNAL OF THE TEXTILE INSTITUTE
(2023)
Article
Chemistry, Physical
Kasra Ghasemi, Syeda Tasnim, Shohel Mahmud
Summary: This study investigates the impact of encapsulating phase change material (PCM) within a porous medium on thermal energy storage and transfer. The effects of stabilizer structure and PCM thermophysical properties on performance are examined. Results show that flow circulation significantly affects melting trend and time, and improving thermal conductivity using highly conductive porous materials is feasible. Stabilizer porosity and PCM latent heat capacity have an inverse impact on melting performance.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Construction & Building Technology
Tao Hai, A. S. El-Shafay, Jasni Mohamad Zain, Magda Abd El-Rahman, Mohsen Sharifpur
Summary: This study investigated the effect of PCM rod diameter and Reynolds number on the air outlet temperature and the amount of molten PCM in a simulated building air conditioning channel. The results showed that increasing the pipe diameter increased the PCM melting time, while changing the inlet temperature and Reynolds number reduced the melting time.
JOURNAL OF BUILDING ENGINEERING
(2022)
Article
Green & Sustainable Science & Technology
Avia Ohayon-Lavi, Adi Lavi, Amr Alatawna, Efrat Ruse, Gennady Ziskind, Oren Regev
Summary: Phase Change Materials (PCM) can be enhanced by loading them with thermally conductive fillers and encapsulating them in a thermally conductive polymer matrix shell. Utilizing a ternary system with graphite-epoxy composite as scaffold, the thermal conductivity of PCM can be significantly improved by judicious choice of fillers.
Article
Nanoscience & Nanotechnology
Wei Liu, Qingyi Lin, Siyu Chen, Hongbin Yang, Kun Liu, Bo Pang, Ting Xu, Chuanling Si
Summary: Phase change materials (PCMs) have the ability to store and release large amounts of energy during melting and crystallization processes, making them highly promising for temperature regulation and thermal energy storage applications. In this study, PCM microcapsules with melamine-formaldehyde resin (MF) shells were prepared using in situ polymerization of Pickering emulsions stabilized by cellulose nanofibrils (CNFs) for addressing PCM leakage and enhancing thermal conduction. Paraffin wax (PW) was utilized as the PCM material. The resulting microcapsules exhibited high latent heat of crystallization and fusion, with the microcapsules with a core-shell ratio of 2 (Micro-2.0) showing the highest values. The encapsulation efficiency of Micro-2.0 was determined to be approximately 79.84%.
ADVANCED COMPOSITES AND HYBRID MATERIALS
(2023)
Article
Green & Sustainable Science & Technology
Hyun Bae Kim, Masayuki Mae, Youngjin Choi
Summary: This study investigated the method of measuring thermal performance using a thermochamber, exploring ways to improve measurement accuracy while confirming that latent heat performance does not increase proportionally with PCM capacity. The overall trends in specific heat and enthalpy of PCMs and building materials were similar regardless of setting time, showing the potential of the proposed approach for various PCM and building material measurements.
Article
Biochemistry & Molecular Biology
Cuiying Tan, Yunqing He, Binghong Luo, Mingxian Liu
Summary: In this study, Pickering emulsion stabilized with chitin nanocrystals (ChNCs) was used to prepare paraffin wax (PW) microcapsules with a dense shell, and loaded into metal foam to enhance thermal conductivity. The PW microcapsules showed good thermal cycling stability and satisfactory latent heat storage capacity. The encapsulation of the polymer shell provided high encapsulation efficiency, non-leakage properties under prolonged high temperature conditions, and high flame retardancy. This study demonstrates a new design strategy using natural and sustainable nanomaterials stabilized PCMs, which has promising applications in energy management and thermal regulation.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Engineering, Chemical
Adeel Arshad, Anurag Roy, Tapas K. Mallick, Asif Ali Tahir
Summary: By combining poly(ethylene glycol) (PEG) with silica aerogel (Si-ag), a smart insulation composite material has been developed to balance thermal and visual comfort in buildings. This composite material has the ability to obstruct near-infrared light while maintaining visible transparency, and exhibits temperature-dependent switchable hydrophobic/hydrophilic characteristics. The thermal performance evaluation shows that the composite material can effectively reduce indoor temperature and be used for window retrofitting.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Engineering, Environmental
Chuan Li, Qi Li, Ruihuan Ge, Xuekun Lu
Summary: In this study, a novel technique of UV-curing was used to fabricate a form-stable composite PCM suitable for low temperature TES. The UV-curing process resulted in the formation of a crosslinked structure in the composite, providing sufficient paths to accommodate the PCM and preventing liquid leakage. The composite demonstrated good physical and chemical compatibility, with the optimum formulation achieving a melting temperature of 52℃ and an energy storage density of 210.8 kJ/kg. The mechanical strength of the composite was found to be dependent on the UV-curing duration.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Energy & Fuels
Rebeca Salgado-Pizarro, Jose Antonio Padilla, Elena Xuriguera, Camila Barreneche, Ana Ines Fernandez
Summary: Thermal Energy Storage (TES) materials, such as Phase Change Materials (PCMs), have been shown to improve energy efficiency in various fields. The development of a novel shape stabilized PCM with cascade performance (CSS-PCM) using techniques such as Differential Scanning Calorimetry (DSC) and Fourier-Transformed Infrared (FT-IR) spectroscopy has improved thermal storage capacity and demonstrated stability after repeated thermal cycles. Additionally, a potential application of the new polymeric-based PCM in 3D printing has been explored, showing promise for future use in this field.
Article
Thermodynamics
Rachuri Naresh, Rajagopalan Parameshwaran, Vijayapuri Vinayaka Ram, Purgindla Venkata Srinivas
Summary: A novel BSPCM was successfully prepared by vacuum impregnating n-dodecanoic acid into porous FA pebbles. The BSPCM showed excellent phase change properties, high thermal energy storage capability, and thermal reliability, making it a viable candidate for passive thermal energy storage in buildings.
CASE STUDIES IN THERMAL ENGINEERING
(2022)
Article
Thermodynamics
Yajing Zhao, Kai Zhang, Xin Min, Jun Xiao, Ziling Xu, Zhaohui Huang, Yan'gai Liu, Xiaowen Wu, Minghao Fang
Summary: Graphene oxide was used to prepare a three-dimensional graphene aerogel with high thermal conductivity, which was further employed to pack phase change materials such as polyethylene glycol, aiming to solve the issues of leakage and low thermal conductivity in phase change materials.
CASE STUDIES IN THERMAL ENGINEERING
(2022)
Article
Chemistry, Multidisciplinary
Md Hasan Zahir, Mohammad Mominur Rahman, Salem K. S. Basamad, Khaled Own Mohaisen, Kashif Irshad, Mohammad Mizanur Rahman, Md Abdul Aziz, Amjad Ali, Mohammad M. Hossain
Summary: In this study, PEG-10MgCaCO(3) has been found to have the smallest particle size and a good porous structure, allowing for an impregnation rate of 69% of PEG and a high latent heat of 152.5 J/g, surpassing comparable materials.
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)