Article
Thermodynamics
Jiangwei Liu, Zunpeng Liu, Changda Nie, Yuqiang Li
Summary: In this study, three different types of combinational fins were proposed and applied in a vertical shell-tube storage unit to solve the issues of convection suppression by annular fins and severe non-uniform melting caused by longitudinal fins. The numerical model was established using the enthalpy-porosity method and validated with experimental data. The results showed that combinational fins can enhance both natural convection and conduction, leading to faster and more uniform melting compared with only longitudinal or annular fins. The optimal combinational fins reduced the melting time by 31.0% and 21.2% compared with only longitudinal and annular fins, respectively. These findings provide important reference for the fins design in vertical shell-tube thermal energy storage units.
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2023)
Article
Thermodynamics
Shengqi Zhang, Liang Pu, Lingling Xu, Minghao Dai
Summary: This paper explores the effects of heat conduction, natural convection, and secondary flow on the charging performance of phase change material in different types of thermal energy storage systems. It was found that heat conduction is dominant in smooth-tube systems, while secondary flow is dominant in finned-tube systems. Additionally, the use of nonmetallic fins can reduce costs and increase thermal storage density.
APPLIED THERMAL ENGINEERING
(2022)
Article
Thermodynamics
Yu Zhang, Guofeng Yuan, Yan Wang, Penghui Gao, Chenguang Fan, Zhifeng Wang
Summary: A validated two-dimensional axisymmetric transient model of an annular finned tube ice storage unit was used to study solidification characteristics, showing that increasing fin height and decreasing fin spacing can improve cold storage capacity.
APPLIED THERMAL ENGINEERING
(2022)
Article
Energy & Fuels
Chao Yang, Yang Xu, Xiao Cai, Zhang-Jing Zheng
Summary: This study proposed a metal foam structure to enhance the efficiency of solar energy storage and evaluated its thermal performance through experiments. The results showed that circumferential graded structure can effectively alleviate the non-uniform melting problem and increase the thermal energy storage rate.
Article
Energy & Fuels
Wenwen Ye, J. M. Khodadadi
Summary: A numerical investigation was conducted to analyze the melting characteristics of phase change materials (PCM) in a horizontal shell-and-tube latent heat thermal energy storage (LHTES) system with novel arrow-shape longitudinal fins. The study revealed that increasing the fin angle improved the melting rate of PCM, while reducing the fin length ratio enhanced natural convection and heat transfer efficiency.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Thermodynamics
Mohamed Amine Dekhil, Jules Voguelin Simo Tala, Odin Bulliard-Sauret, Daniel Bougeard
Summary: The study analyzed the melting and solidification processes in three horizontal storage units for Latent Heat Thermal Storage using water as phase change material and a water/glycol solution as the Heat Transfer Fluid. Different configurations were compared to improve thermal performance, with the addition of fins significantly increasing solidification and melting rates, especially in the configuration with longitudinal fins.
APPLIED THERMAL ENGINEERING
(2021)
Article
Energy & Fuels
Xiaohu Yang, Xinyi Wang, Zhan Liu, Xilian Luo, Jinyue Yan
Summary: This study investigates the enhanced heat transfer by adding longitudinal fins in a horizontal shell-and-tube heat storage unit. The results show that the number of fins greatly affects the melting time and increasing the number of fins weakens local natural convection. The study provides practical significance for engineering application research of phase change energy storage.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2022)
Article
Green & Sustainable Science & Technology
Mateo Kirincic, Anica Trp, Kristian Lenic
Summary: This study numerically investigated melting and solidification processes in shell-and-tube type LTES with longitudinal fins, developed two mathematical models, and validated them through experiments. The model neglecting natural convection is suitable for solidification modeling, while the model including natural convection is suitable for melting modeling.
Article
Energy & Fuels
Zi-Rui Li, Zi-Kun Zhang, Xiao-Rong Wang, Shuang-Shuang Ni, Li-Wu Fan
Summary: Nano-enhanced phase change materials (NePCM) exhibit immense potential for thermal energy storage (TES) applications, due to its improved thermal conductivity. However, its high viscosity can cause a significant deterioration in natural convection. Close-contact melting (CCM), featuring heat conduction through micro-liquid film, is regarded as a viable pathway to maximize the advantage of NePCM's high thermal conductivity and weaken the adverse effect of high viscosity on convection.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Energy & Fuels
Vahid Safari, Hossein Abolghasemi, Leila Darvishvand, Babak Kamkari
Summary: This study evaluates the combined effect of fin configuration and eccentricity of heat transfer tube on the melting behavior of phase change material (PCM) inside shell and tube heat exchangers. Experimental findings show that the eccentric tube HX and bifurcated fin configuration can significantly reduce melting time, while numerical simulations indicate that bifurcations increase total heat transfer rate.
JOURNAL OF ENERGY STORAGE
(2021)
Article
Energy & Fuels
Hossein Soltani, Madjid Soltani, Jatin Nathwani
Summary: Changing the eccentricity between outer and inner tubes in a shell-and-tube unit can improve overall heat transfer during phase change of the heat storage medium. This study evaluates the processes of melting and solidification in an eccentric design for a shell-and-tube unit using the second law of thermodynamics and natural convection. The results show that downward eccentric designs enhance natural convection during the melting process and natural convection is significant in the primary stage of the solidification process.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Energy & Fuels
Hongyang Li, Chengzhi Hu, Yichuan He, Dawei Tang, Kuiming Wang, Wenguo Huang
Summary: The study proposes three-dimensional perforated-fin models to enhance the heat storage performance in latent heat thermal energy storage (LHTES) units. By varying the hole diameter and location, it is observed that these parameters significantly affect the charging performance. Increasing the hole diameter strengthens natural convection but weakens thermal conduction simultaneously.
JOURNAL OF ENERGY STORAGE
(2021)
Article
Energy & Fuels
Zhang-Jing Zheng, Yu Sun, Yang Chen, Chen He, Hang Yin, Yang Xu
Summary: Compared to non-uniformly arranged fin, uniformly arranged fin performs better in complete melting-solidification performance, but not in the melting process. To improve the melting process, this study proposes the method of rotating finned tube. Numerical investigation shows that the rotating finned tube enhances the convective heat transfer of PCM and reduces the average synergy angle in the phase change region. It is recommended to have a rotational speed of the finned tube no less than 2 rpm and increasing the fin number can start the rotation earlier.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Energy & Fuels
Mansoor Shademan, Alireza Hossein Nezhad
Summary: The study numerically analyzed the performance of an energy storage system containing phase change materials under different conditions, showing that applying coupled boundary condition is crucial for reducing errors during the charging process.
JOURNAL OF ENERGY STORAGE
(2021)
Article
Energy & Fuels
Zi-Rui Li, Guo-Tao Fu, Li-Wu Fan
Summary: The study reveals that changes in fin shape and nano-additive loading can have complex effects on heat transfer mechanisms during melting in shell-and-tube thermal energy storage units filled with NePCM. The combination of fin shape and GNP loading should be carefully selected to achieve synergistic effects for different application scenarios.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Thermodynamics
R. Anish, V Mariappan, S. Suresh, Mahmood Mastani Joybari, Ammar M. Abdulateef
Summary: The study investigates the use of thermal energy storage systems to address the intermittence of renewable energy sources, focusing on analyzing the heat transfer efficiency and performance of compact spiral coil thermal storage units. Experimental data shows that in this storage unit, the processes of heat storage and discharge of xylitol are mainly governed by natural convection and conduction, respectively.
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2021)
Article
Green & Sustainable Science & Technology
R. Anish, Mahmood Mastani Joybari, Saeid Seddegh, V Mariappan, Fariborz Haghighat, Yanping Yuan
Summary: This study investigated the heat transfer mechanism in a horizontal shell and multi-finned tube heat exchanger through numerical simulation, finding that design parameters such as the number of tubes, fin height, and rotation of fins and tubes significantly affect the storage performance.
Article
Energy & Fuels
Ammar M. Abdulateef, Marek Jaszczur, Qusay Hassan, R. Anish, Hakeem Niyas, Kamaruzzaman Sopian, Jasim Abdulateef
Summary: The experimental results showed that melting Paraffin completely was faster when using double-side heating, and the melting time varied with different charging temperatures. Compared to pure Paraffin, using nanoparticles and fin structures in the thermal energy storage system can improve the melting performance of Paraffin.
JOURNAL OF ENERGY STORAGE
(2021)
Review
Thermodynamics
Mahmood Mastani Joybari, Hakon Selvnes, Alexis Sevault, Armin Hafner
Summary: Shell-and-tube heat exchangers have long been the industry's most common choice, but pillow-plate heat exchangers have gained a growing market share in recent years. This study aims to fill the literature gap by systematically and critically surveying earlier studies on pillow-plate heat exchangers and providing an in-depth discussion on the achievements so far.
APPLIED THERMAL ENGINEERING
(2022)
Review
Thermodynamics
Zeng Chao, Yuan Yanping, Fariborz Haghighat, Karthik Panchabikesan, Mahmood Mastani Joybari, Cao Xiaoling, Lubomir Klimes
Summary: This review paper critically analyzes the recent literature on latent heat thermal energy storage systems in buildings, consolidating commercial software and in-built codes used for mathematical modeling. It also provides suggestions for future works to develop PCM-based thermal energy storage systems more effectively.
JOURNAL OF THERMAL SCIENCE
(2022)
Article
Construction & Building Technology
Soroush Samareh Abolhassani, Mahmood Mastani Joybari, Mirata Hosseini, Mojtaba Parsaee, Ursula Eicker
Summary: Global warming has significantly impacted communities, health, and infrastructure. Previous studies have shown that climate change leads to warmer temperatures, affecting the heating and cooling needs as well as thermal performance of buildings. Analyzing how buildings respond to climate change in terms of energy consumption is crucial for future energy planning and decision-making. However, the existing literature lacks a coherent approach, making it difficult to draw universal conclusions. This study introduces a step-by-step procedure to harmonize future research and guide building impact assessment under climate change.
JOURNAL OF BUILDING ENGINEERING
(2023)
Article
Thermodynamics
Mahmood Mastani Joybari, Hakon Selvnes, Erling Vingelsgard, Alexis Sevault, Armin Hafner
Summary: This study conducted a parametric study on the design and operational parameters of an industrial-scale pillow plate heat exchanger with carbon dioxide. The results showed that the difference between refrigerant and carbon dioxide phase change temperatures and plate material had the highest significance on storage size and cost, while the refrigerant flow rate had the lowest significance.
APPLIED THERMAL ENGINEERING
(2023)
Article
Materials Science, Multidisciplinary
H. Vishnu Nandan, R. Anish, G. Jayaprasad, Subin Sunny, Jackson Scaria Jomon, R. Shibin, J. B. Sajin
Summary: Increasing concerns about environmental pollution have prompted researchers to seek sustainable alternatives. This study focuses on the fabrication and experimental validation of a hybrid bio composite using coir and cotton fiber reinforcement dispersed in a paper matrix. The results show that the specimen with 20 wt% coir has better tensile strength and Izod impact value compared to the standard sample, while maintaining thermal stability comparable to conventional packaging materials.
Proceedings Paper
Materials Science, Multidisciplinary
R. Anish, V. Mariappan, P. S. Hitha, B. S. Arun
Summary: An experimental study was conducted to analyze the melting behavior of erythritol in an energy storage unit with multi-finned tubes. The melting of PCM was mainly influenced by natural convection, leading to a faster melting process. Storage unit with longitudinal multiple tubes showed the best thermal performance and significant increase in the rate of PCM melting during the charging process.
MATERIALS TODAY-PROCEEDINGS
(2021)
Proceedings Paper
Materials Science, Multidisciplinary
P. Sarafoji, V. Mariappan, R. Anish, K. Karthikeyan, Jayabharata Reddy
Summary: This study presents the performance and evaluation of phase change material in the Prototype Solar Cold Storage (PSCS) system. Experimental results showed that PCM has a high charging speed and insulation effect, which can effectively replace part of the total power consumption. Furthermore, these technologies can also be used for solar PV generation and reduction of greenhouse gas emissions.
MATERIALS TODAY-PROCEEDINGS
(2021)
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)
